Relevant bibliographies by topics / PCBN

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'PCBN'

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Published: 4 June 2021
Last updated: 12 February 2022

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Journal articles on the topic "PCBN"

1

Li, Yong, Zi Li Kou, Shen Zhuo Liu, Rui Zhang, Ping Ping Liu, Fang Ming Liu, Wen Wen Yin, Shuai Yin, and Jian Lai Zou. "Wear Behaviors of PCBN Tools in Interrupted Turning Hardened Steel with Tool’s Chamfer Angle and Edge Preparation Considered." Applied Mechanics and Materials 665 (October 2014): 3–10. http://dx.doi.org/10.4028/www.scientific.net/amm.665.3.

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The performance and wear mechanisms of one type of polycrystalline cubic boron nitride (PCBN) cutting tool with two different cutting edge micro geometries (marked as PCBN 169T and PCBN 169S) have been investigated in this paper. Interrupted turning of round GCr15 steel has been selected as the test method. The experimental results indicate that PCBN 169S has a greater thermal wear resistance than PCBN 169T at high cutting speeds. It is believed that edge preparation can shorten or eliminate the initiative wearing stage, improve the impact resistance, reduce the occurrence of chipping or dilapidation, and extend tool life. Scanning electron microscopy (SEM) were used to evaluate wear mechanisms of PCBN tools. Our results show that the dominant wear mechanisms for PCBN 169T and PCBN 169S are mechanical and chemical wear.
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Lv, Zhi, Ji Fu Feng, Feng Lin, and Xi Peng Xu. "Effects of Additives and CBN Grit Size on the Machinability of PCBN Tools." Materials Science Forum 532-533 (December 2006): 41–44. http://dx.doi.org/10.4028/www.scientific.net/msf.532-533.41.

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An investigation was reported on how to improve the machinability of PCBN tool for realizing the electric spark line cutting of PCBN tool. The machinability of the PCBN tool was evaluated in terms of its current conductivity. The influences of the additive compositions, additive concentrations and grit sizes of CBN on the current conductivity of PCBN tool were discussed through manufacturing PCBN tool. Experimental results indicated that the machinability of PCBN tool was attributed to the mesh structure of current-conducting additive, which was the combined effects of high additive concentrations and fine CBN grits.
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Ding, Yun Peng, Ming Xuan Zhang, Qun Luo, Chen Jiang Dong, Jiao Jiao Yao, Yan Wang, Ka Gao, and Rui Zhang. "Influence of Technological Conditions on the Properties of PcBN Composites Fabricated by Spark Plasma Sintering." Solid State Phenomena 281 (August 2018): 420–25. http://dx.doi.org/10.4028/www.scientific.net/ssp.281.420.

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Polycrystalline cubic boron nitride (PcBN) composites were fabricated by spark plasma sintering (SPS). The SiC, Si3N4 and Si/B were used as binder. The effects of SPS sintering process parameters, such as the sintering temperature, holding time, heating rate and binder composition, on the properties of PcBN samples were investigated. PcBN composite with a hardness of 23.12GPa was fabricated efficiently by SPS. The hardness of PcBN sample increased first and then decreased with the increase of sintering temperature. As the holding time was 20 min, the hardness of PcBN sample was the highest. The PcBN performance at the heating rate of 50 °C/min was significantly better than that of 100°C /min. When the binder component of SiC, Si3N4, and Si was 63%:27%:10%, the hardness of PcBN was the highest. With an addition of Si, the PcBN samples had higher hardness than that of B.
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Okamura, Katsumi, Saturo Kukino, and Tomohiro Fukaya. "New Pcbn for Heavy Interrupted Cutting of Hardened Steel." Materials Science Forum 534-536 (January 2007): 1117–20. http://dx.doi.org/10.4028/www.scientific.net/msf.534-536.1117.

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PCBN tools are used worldwide for machining of hardened steel parts in automotive industries. Because cutting by PCBN tools has many advantages, which are high-precision, highefficiency, high-flexibility and low total machining cost, compared with conventional grinding methods. But in heavy interrupted cutting of hardened steel, the tool life is not so stable by sudden breakage of the cutting edge, and total cost of cutting by PCBN is not so economical compared to the grinding. So the conventional grinding is still main process in such applications. Recently, demand for decreasing machining cost has grown in heavy interrupted cutting and much tougher PCBN material is required. To solve this problem, new PCBN has been developed. New PCBN has very fine and homogeneous microstructure to increase the toughness of sintered body that it provides a reliable tool life for heavy interrupted cutting. The features and cutting performances of new PCBN are described in this report.
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Xiao, Lu, M. X. Zeng, Dong Hui Wen, H. H. Wu, and B. H. Si. "PCBN Tool Wear Mechanism in Interrupted Hard Turning SAE8822 Hardened Steel." Key Engineering Materials 315-316 (July 2006): 329–33. http://dx.doi.org/10.4028/www.scientific.net/kem.315-316.329.

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The wear behaviour in the precision interrupted hard part turning SAE8822 case hardened steel by BN250 PCBN cutting tool was studied. Experimental results showed that the main wear mechanism for the PCBN tool was the edge chipping by the fluctuation of cutting forces and cutting temperature. The oxidization and diffusion of the elements between workpiece and PCBN tool decrease the bonded strength between binder and cBN crystal, then lead to the damage of PCBN cutting tool.
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Liu, Rui Ping, Fu Ming Deng, and Xue Jun Lu. "Wear Mechanisms of PCBN Cutting Tools in Hard and Dry Cutting GCr15 Bearing Steel." Advanced Materials Research 197-198 (February 2011): 1494–99. http://dx.doi.org/10.4028/www.scientific.net/amr.197-198.1494.

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GCr15 bearing steel was turned with PCBN cutting tools in a manner of hard and dry cutting, and the characteristics and morphology of rake and flank face of PCBN cutting tools were observed, the element distribution of different regions of rake and flank face of PCBN cutting tools were tested and analyzed by use of EDS, and finally the wear mechanisms of PCBN cutting tools were discussed. The results showed that the wear areas of rake and flank face of PCBN cutting tools were small and mostly concentrated near the tip and sub-chamfering, and the reason was mechanical, oxidation, chemical and phase transition wear, which resulted in the joint action of tool wear.
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Ji, Wei, Xian Li Liu, Fu Gang Yan, Sheng Lei Xiao, and Meng Chao Fan. "Investigations of Surface Roughness with Cutting Speed and Cooling in the Wear Process during Turing GH4133 with PCBN Tool." Key Engineering Materials 589-590 (October 2013): 258–63. http://dx.doi.org/10.4028/www.scientific.net/kem.589-590.258.

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The high temperature strength of Ni-based superalloys coupled with excellent corrosion resistance make them ideal for aerospace applications. However, the difficulty in finish machining superalloys with the carbide tools presents the short tool-life. Polycrystalline Cubic Boron Nitride (PCBN) is potential to machine superalloys. To data, there are many researches about PCBN tool wear, but only little papers showing how the surface roughness and the wear speed are influenced by cutting parameter and the coolant during the differences periods of PCBN tool wear. This investigation has been conducted to show that the PCBN tool wear is slower with cooling that without cooling during cutting superalloys with PCBN tool especially in VB up to a certain value. It is shown that tool fracture can be reduced by using the cooling. In the process of PCBN tool wear, in addition, there are some differences of the effect of the cooling for roughness Ra values.
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Gao, Haining, Xianli Liu, and Zhitao Chen. "Cutting Performance and Wear/Damage Characteristics of PCBN Tool in Hard Milling." Applied Sciences 9, no. 4 (February 22, 2019): 772. http://dx.doi.org/10.3390/app9040772.

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In the intermittent machining of hardened steel for the die and mold industry, determining how to reduce the wear of PCBN (Polycrystalline Cubic Boron Nitride) tools and improve their machining efficiency and quality is an important subject. This study investigated the intermittent machining of hardened steel (Cr12MoV, 59HRC (Rockwell hardness)) using uncoated PCBN tools to determine the cutting performance (cutting force, chip morphology, surface quality, tool life, cutting temperature) and the wear/damage characteristics of the tools. The results showed that the cutting performance of a PCBN tool was better than that of a cemented carbide tool. The wear mechanism on the PCBN tool flank was diffusion wear, adhesive wear, and oxidation wear. The main failure modes of the PCBN tool in the machining process of hardened steel at low speed were tool micro-chipping, the conchoidal damage of the rake face, and the larger damaged area of the flank face. The main failure modes of the PCBN tool in the machining process of hardened steel at high speed were flank wear and high-rate fatigue damage.
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Zhang, B., Wen Feng Ding, Jiu Hua Xu, Q. Pan, and Y. J. Shi. "Self-Sharpening Abrasive Composite Bulks with PCBN Grains." Key Engineering Materials 487 (July 2011): 220–24. http://dx.doi.org/10.4028/www.scientific.net/kem.487.220.

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Abrasive composite bulks consisting of polycrystalline cubic boron nitride (PCBN) grains, Cu-Sn-Ti alloy and graphite particles were sintered at the heating temperature of 920 °C for the dwell time of 30 min. The bending strength of abrasive composite bulks was measured. The interfacial microstructure and the phases were characterized. In addition, the dressing experiment was carried out to detect the self-sharpening behavior of the composite bulks. Results obtained show that the abrasive composite bulks in this investigation give higher bending strength than that of the vitrified abrasive wheels. The compounds of TiN, TiB2were formed and the PCBN grains were embedded firmly. Strong fixing of the bulks to the PCBN grains led to the breakage of the PCBN grains when the abrasive composite bulks fractured. The intergranular fracture mode of the PCBN grains ensured the self-sharpening effect of the grains.
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Harano, Katsuko, Keiko Arimoto, Yuh Ishida, and Hitoshi Sumiya. "Cutting Performance of Binder-Less Nano-Polycrystalline cBN Tool." Advanced Materials Research 1017 (September 2014): 389–92. http://dx.doi.org/10.4028/www.scientific.net/amr.1017.389.

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Binder-less nanopolycrystalline cBN (BL-PcBN) synthesized by direct conversion under high pressure and high temperature has a fine texture consisting of small cBN grains (<100nm), high hardness (40–50 GPa) and high transverse rupture strength (1.3–1.6 GPa). Their mechanical properties strongly depend on their starting materials and synthetic conditions. In this study, Ball-end mill tools prepared from several kinds of BL-PcBN synthesized under various conditions (8–20 GPa, 1500–2300oC) were examined for precision cutting of high-strength hardened steel comparing with conventional sintered cBN. A fine mirror-finish surface with Ra of 20 nm could be produced by precision BL-PcBN tools, while not by conventional sintered cBN tools. The tool wear of BL-PcBN synthesized from hBN at 10 GPa and 2200°C was four to five times less than that of conventional cBN. These results revealed that the BL-PcBN tools have excellent potential for precision cutting on ferrous materials.
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Dissertations / Theses on the topic "PCBN"

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Behrens, Leif [Verfasser]. "Schleifen von PCBN / Leif Behrens." Hannover : Technische Informationsbibliothek (TIB), 2016. http://d-nb.info/1122489099/34.

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Krödel-Worbes, Alexander [Verfasser]. "Lasermikrobearbeitung von PcBN-Zerspanwerkzeugen / Alexander Krödel-Worbes." Garbsen : TEWISS - Technik und Wissen GmbH, 2019. http://d-nb.info/1205496920/34.

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Hioki, Daniel. "Usinagem dura do aço 100Cr6 com PCBN." Florianópolis, SC, 1998. http://repositorio.ufsc.br/xmlui/handle/123456789/77497.

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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico.
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A necessidade contínua de reduzir os custos de produção tem sido um dos fatores mais importantes para a sobrevivência de uma empresa em um mercado cada vez mais competitivo. A utilização do PCBN como ferramenta de corte permite otimizar o processo de fabricação que envolve peças temperadas, substituindo a retificação pelo torneamento de acabamento. Para constatar a possibilidade desta substituição ambos os processos foram comparados com relação aos seus resultados de trabalho, tais como: rugosidade e integridade da superfície. Durante a verificação experimental, com o intuito de compreender melhor o processo de torneamento de acabamento, foram estudados os efeitos dos parâmetros de entrada sobre as características do processo e os resultados de trabalho. Os parâmetros de entrada foram: dureza da peça, velocidade de corte, profundidade de corte e avanço. As características do processo investigadas foram: desgaste de flanco, força de corte, força de avanço e força passiva. Os experimentos foram executados como fatorial saturado e sobre eles aplicados métodos estatísticos para definir a intensidade do efeito de cada parâmetro de entrada. Através da relação S/R foram definidas as condições de corte que apresentaram a menor influência do ruído.
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Khan, Sarmad Ali. "Machining of nickel based superalloys using coated PCBN tooling." Thesis, University of Birmingham, 2014. http://etheses.bham.ac.uk//id/eprint/5111/.

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Following a comprehensive literature review on the machinability of nickel based superalloys using conventional carbide, coated carbide and ceramics including uncoated/coated PCBN, the research details statistically designed experimental work to assess the tool life/wear performance and workpiece surface integrity of a range of uncoated and coated PCBN tools, when turning solution treated and aged Inconel 718. Typically, the use of carbide tooling is limited to < 60 m/min cutting speed, even with the use of high pressure cutting fluids (JetStream systems). Hardmetal coatings provide some productivity improvements although cutting speed restrictions still operate. Details of PCBN use at up to 600 m/min have been published but at the expense of tool life. Experimental testing of a number of uncoated PCBN grades involving both high and low CBN concentrations, indicated a preferred operating window of ~ 300 – 400 m/min. Advanced ceramic coatings provided no significant benefits. Primary tool wear mechanisms related to abrasion, workpiece adhesion/diffusion and fracture depending on the specific operating parameters employed. In depth workpiece integrity evaluation involving surface roughness, microstructure, microhardness and residual stress measurement suggested only limited damage when operating with PCBN tooling at preferred/optimised conditions.
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Junior, Aldo Braghini. "Investigação do desgaste de ferramentas de PCBN e metal duro no fresamento de topo de aços endurecidos." Universidade de São Paulo, 1998. http://www.teses.usp.br/teses/disponiveis/18/18135/tde-02022016-090733/.

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O fresamento de topo de aços ferramenta, no estado endurecido, pode ser uma alternativa para a fabricação de moldes e matrizes, com alta taxa de remoção. Este trabalho estuda os tipos e mecanismos de desgaste presentes nesta operação de usinagem, bem como o comportamento da emissão acústica. São realizados experimentos com ferramentas de PCBN e Metal Duro usinando os aços H13 (49-51 HRc), VMO (54-57 HRc) e VC131 (57-59 HRc). O desgaste das ferramentas de PCBN é significativamente menor que o desgaste das ferramentas de Metal Duro. O tipo de desgaste predominante é o desgaste de flanco, com indícios de desgastes de cratera. É observada uma combinação entre os mecanismos de desgaste abrasivo e adesivo. Não se observa a formação de trincas abaixo da superfície usinada. Verifica-se que a emissão acústica aumenta com a velocidade de corte e mostra-se também dependente do material da peça e da ferramenta.
The endmilling operation applied to the machining of hardened tool steels, can be seen as an alternative to the conventional sequence of operations used in dies and injection moulds. Normally, eletrodischarge machining, which has a low removal rate, is applied for the finishing operation, just before polishing. The present research work study the types and mechanisms of wear that appear in this machining operation, as well as, the behaviour of Acoustic Emission (EA). Experiments are carried out using PCBN and Carbide tools, machining AISI H13 (49-51 HRc), AISI 6F3 (54-57 HRc) e AISI D6 (57-59 HRc). The wear observed on the PCBN tools was smaller than that on the carbide ones. The type of wear dominating was flank wear, with some presence of crater wear in a few machining conditions. It was also observed a combination between the abrasive and the adhesive mechanisms. It was not noted any cracks on the surface just below the machined surface. The acoustic emission showed to be directly proportional to the cutting speed and also dependent upon the workpiece material and to the tool material.
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Ren, Xuejun. "The tool : workpiece interaction when machining welded hardfacing using PCBN tools." Thesis, University of Hull, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.397061.

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Mattsson, Amanda, and Malin Lindholm. "Friction and wear mechanisms of PCBN in sliding contact with tool steel." Thesis, Högskolan Dalarna, Materialteknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:du-5663.

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Sveen, Susanne. "Wear of coated and uncoated PCBN cutting tool used in turning and milling." Licentiate thesis, Linköpings universitet, Nanostrukturerade material, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-102551.

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This licentiate thesis has the main focus on evaluation of the wear of coated and uncoated polycrystalline cubic boron nitride cutting tool used in cutting operations against hardened steel. And to exam the surface finish and integrity of the work material used. Harder work material, higher cutting speed and cost reductions result in the development of harder and more wear resistance cutting tools. Although PCBN cutting tools have been used in over 30 years, little work have been done on PVD coated PCBN cutting tools. Therefore hard turning and hard milling experiments with PVD coated and uncoated cutting tools have been performed and evaluated. The coatings used in the present study are TiSiN and TiAlN. The wear scar and surface integrity have been examined with help of several different characterization techniques, for example scanning electron microscopy and Auger electron spectroscopy.   The results showed that the PCBN cutting tools used displayed crater wear, flank wear and edge micro chipping. While the influence of the coating on the crater and flank wear was very small and the coating showed a high tendency to spalling. Scratch testing of coated PCBN showed that, the TiAlN coating resulted in major adhesive fractures. This displays the importance of understanding the effect of different types of lapping/grinding processes in the pre-treatment of hard and super hard substrate materials and the amount and type of damage that they can create. For the cutting tools used in turning, patches of a adhered layer, mainly consisting of FexOy were shown at both the crater and flank. And for the cutting tools used in milling a tribofilm consisting of SixOy covered the crater. A combination of tribochemical reactions, adhesive wear and mild abrasive wear is believed to control the flank and crater wear of the PCBN cutting tools. On a microscopic scale the difference phases of the PCBN cutting tool used in turning showed different wear characteristics. The machined surface of the work material showed a smooth surface with a Ra-value in the range of 100-200 nm for the turned surface and 100-150 nm for the milled surface. With increasing crater and flank wear in combination with edge chipping the machined surface becomes rougher and showed a higher Ra-value. For the cutting tools used in milling the tendency to micro edge chipping was significant higher when milling the tools steels showing a higher hard phase content and a lower heat conductivity resulting in higher mechanical and thermal stresses at the cutting edge.
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Taylor, Ciaran John. "The wear and performance characteristics of PCBN cutting tools when machining D3 hardened steel." Thesis, University of Hull, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.431046.

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Silva, Nelson Coutinho da 1971. "Análise da frequência de interrupções no torneamento de aços endurecidos com ferramentas de PCBN." [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/265862.

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Orientador: Amauri Hassui
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica
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Resumo: O torneamento de aços endurecidos como alternativa a retificação cilíndrica, tem se tornado cada vez mais comum no meio industrial. Devido a melhorias do desempenho mecânico das máquinas, aliada aos avanços nos materiais de ferramenta, particularmente do PCBN, os bons resultados obtidos em aplicações e estudos realizados, vem estimulando cada vez mais essa prática. As diversas geometrias de peças utilizadas em componentes mecânicos submetem as ferramentas destinadas ao torneamento de aços endurecidos a condições de corte variadas, seja essas obtidas a partir de superfícies contínuas ou interrompidas. No entanto, a maior parte dos estudos já realizados, relacionados ao torneamento de aços endurecidos está voltada ao corte contínuo, fazendo do corte interrompido uma aplicação ainda pouco explorada. Este trabalho tem como objetivo estudar o comportamento da frequência de interrupção no torneamento de aços endurecidos com ferramenta de PCBN, além de sua interação com o ângulo de posição (?r) e velocidade de corte (vc). Para isso foram realizados experimentos de torneamento em corpos de prova com três frequências de interrupções diferentes, sendo um com baixa frequência de interrupção contendo dois rasgos, outro com média frequência de interrupção contendo quatro rasgos e finalmente outro com alta frequência de interrupção contendo oito rasgos, sendo esses transversais e equidistantes. Para a construção dos mesmos foi utilizado o aço ABNT 4340 com dureza entre 52 e 56 HRC, usando uma classe comercial de ferramenta PCBN 7525 (ISO H25) com alto teor de CBN (90%), recomendada para corte interrompido. Os parâmetros de saída analisados foram temperatura (°C), rugosidade (Ra), desgaste (VBmáx) e volume removido (mm3). Dentre as diversas conclusões desse trabalho, a principal delas indica que entre os parâmetros variados a frequência de interrupção é o que exerce maior influência sobre a temperatura e o volume removido, sendo que nos corpos de prova com maior frequência maiores volumes removidos foram alcançados, enquanto que nos corpos de prova com frequências menores, a temperatura atingiu níveis mais elevados
Abstract: Turning of hardened steels is becoming an important alternative to cylindrical grinding at industrial level. The increasing interest on this technique results from the good mechanical performance of the machine parts, which is accompanied by enhancements of the cutting tool materials, particularly PCBN, and the good results of using this technique, as reported in prior studies. Machine elements are characterized by a diversity of geometric forms. These characteristics promote that the cutting tools used for turning hardened steel are subjected to varying cutting conditions in both continuous and interrupted surfaces. However, most of the studies in this area have been related to turning hardened steels in continuous cutting. As a consequence, cutting of interrupted surfaces remains under-exploited. This work aims at studying the behavior of the interruption frequency during turning of hardened steels by using PCBN tools, as well as the interaction with the cutting tool¿s position angle (?r) and cutting speed (vc). For this, turning tests were performed on samples with three different interruption frequencies: a) low interruption frequency containing two slots, b) average interruption frequency containing four slots, and c) high interruption frequency containing eight slots. AISI 4340 steels with hardness between 52 and 56 HRC were used for manufacturing the samples. A commercial grade PCBN tool 7525 (ISO H25) with high CBN content (90%) was used as a cutting tool. The output parameters were temperature (°C), roughness (Ra), wear (VBmáx), and volume removed (mm3). Results indicate that the interruption frequency is the parameter that most affects the temperature and the volume removed. The samples mechanized at higher frequencies presented higher volume removed. Meanwhile, the samples turned with lower frequencies reached higher temperatures
Mestrado
Materiais e Processos de Fabricação
Mestre em Engenharia Mecânica
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Books on the topic "PCBN"

1

Ng, Eu-Gene. Modelling of the cutting process when machining hardened steel with polycrystalline cubic boron nitride (PCBN) tooling. Birmingham: University of Birmingham, 2001.

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Kuntz, Glenn. PCB reference manual: Operation and management of electrical equipment containing PCBs. Washington, D.C: The Association, 1993.

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R, Rogelet Keri, ed. PCCN certification review. Sudbury, MA: Jones and Bartlett Publishers, 2009.

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R, Rogelet Keri, ed. PCCN certification review. 2nd ed. Burlington, MA: Jones & Bartlett Learning, 2014.

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Illinois. Office of Chemical Safety. PCB free. Springfield, IL: Illinois Environmental Protection Agency, Office of Chemical Safety, 1995.

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Analytical chemistry of PCBs. Boston: Butterworth Publishers, 1986.

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Analytical chemistry of PCBs. 2nd ed. Boca Raton, Fla: CRC/Lewis Publ., 1997.

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Analytical chemistry of PCBs. Boca Raton: Lewis Publishers, 1992.

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Schierow, Linda-Jo. PCBs: Background and analysis. [Washington, D.C.]: Congressional Research Service, Library of Congress, 1992.

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Stephen, Lynn. The story of PCUN and the farmworker movement in Oregon. Eugene, Or: Dept. of Anthropology, University of Oregon, 2001.

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Book chapters on the topic "PCBN"

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Brookes, E. J., R. D. James, and X. Ren. "Hard Turning with PCBN Tooling." In AMST ’99, 107–15. Vienna: Springer Vienna, 1999. http://dx.doi.org/10.1007/978-3-7091-2508-3_9.

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Brookes, E. J., R. D. James, C. Shutt, and C. J. Taylor. "Machining Abrasion-Resistant Hard-Facings with Pcbn Tools." In AMST’02 Advanced Manufacturing Systems and Technology, 113–20. Vienna: Springer Vienna, 2002. http://dx.doi.org/10.1007/978-3-7091-2555-7_9.

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Ren, X. J., and Ming Zhi Wang. "Microstructure and Mechanical Properties of High Density PCBN Aggregates." In High-Performance Ceramics V, 1788–90. Stafa: Trans Tech Publications Ltd., 2008. http://dx.doi.org/10.4028/0-87849-473-1.1788.

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Okamura, Katsumi, Saturo Kukino, and Tomohiro Fukaya. "New Pcbn for Heavy Interrupted Cutting of Hardened Steel." In Progress in Powder Metallurgy, 1117–20. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-419-7.1117.

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Schaper, F., B. Denkena, M. A. Dittrich, A. Krödel, J. Matthies, and S. Worpenberg. "Wear Behaviour of PCBN, PCD, Binderless PCBN and Cemented Carbide Cutting Inserts When Machining Ti-6Al-4V in an Oxygen-Free Atmosphere." In Lecture Notes in Production Engineering, 275–83. Berlin, Heidelberg: Springer Berlin Heidelberg, 2020. http://dx.doi.org/10.1007/978-3-662-62138-7_28.

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Dai, S. J., Dong Hui Wen, and Ju Long Yuan. "PCBN Tool Wear Mechanism in Hard Turning Hardened Bearing Steel." In Advances in Machining & Manufacturing Technology VIII, 334–38. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-999-7.334.

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Xiao, L., M. X. Zeng, Dong Hui Wen, H. H. Wu, and B. H. Si. "PCBN Tool Wear Mechanism in Interrupted Hard Turning SAE8822 Hardened Steel." In Advances in Machining & Manufacturing Technology VIII, 329–33. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-999-7.329.

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Manokhin, Andrey, Sergiy Klymenko, Maryna Kopeikina, Sergiy Klymenko, and Yuriy Melniychuk. "Modeling of the Machining Process by PCBN Tool with Self-adaptive Coating." In Lecture Notes in Mechanical Engineering, 545–54. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-68014-5_53.

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Lv, Zhi, Ji Fu Feng, Feng Lin, and Xi Peng Xu. "Effects of Additives and CBN Grit Size on the Machinability of PCBN Tools." In Materials Science Forum, 41–44. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-421-9.41.

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Nguyen, Dung Thi Quoc. "Prediction of Temperature Distribution in PCBN Cutting Tools in Orthogonal Turning 9XC Hardened Alloy Steels." In Springer Proceedings in Materials, 131–39. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-45120-2_12.

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Conference papers on the topic "PCBN"

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Werschmoeller, Dirk, and Xiaochun Li. "Embedding of Micro Thin Film Sensors Into Polycrystaline Cubic Boron Nitride (PCBN) for Potential Tooling Applications Via Diffusion Bonding." In ASME 2008 International Manufacturing Science and Engineering Conference collocated with the 3rd JSME/ASME International Conference on Materials and Processing. ASMEDC, 2008. http://dx.doi.org/10.1115/msec_icmp2008-72504.

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Polycrystalline cubic boron nitride (PCBN) is increasingly being used in manufacturing processes to increase tool life and processing speed. Existing sensors in PCBN tools are unable to provide accurate time- and space-resolved measurements of the thermo-mechanical phenomena at and near the tool-work interface. Using microfabrication techniques along with diffusion bonding, thin film palladium-13wt% chromium (PdCr) alloy micro strain gage sensors were successfully embedded into PCBN structures for potential tooling applications. This article reports on the design, fabrication and characterization of a sensor consisting of three PdCr sensing elements embedded into a PCBN sample. The embedded sensors show good linearity and sensitivity.
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Kukino, Satoru, Tomohiro Fukaya, Junnichi Shiraishi, and Tetsuo Nakai. "High-Reliability Cutting with New PCBN Tools4." In International Congress & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1999. http://dx.doi.org/10.4271/1999-01-0420.

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Guha, Anshuman, Dirk Werschmoeller, and Xiaochun Li. "Wireless Acquisition of Temperature Data From PCBN Embedded Thin Film Sensors." In ASME 2010 International Manufacturing Science and Engineering Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/msec2010-34177.

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This paper presents the results of wireless data transmission experiments from micro thin film thermocouples (sensor) embedded into polycrystalline cubic boron nitride (PCBN) cutting inserts. A small wireless data acquisition system (DAQ) is necessary for sufficiently fast acquisition of experimental data from the embedded micro sensors in PCBN inserts, when mounted on a rotating cutting tool. For a wireless transfer of a low amplitude and high frequency thermal e analog signal, a signal conditioning circuit and wireless transmitting module are used. A Bluetooth transmitter module is used to establish communication with the receiver PC over serial port profile (SPP). To characterize the wireless data transfer system, heat signals are generated in stationary PCBN embedded thermocouples through laser pulses and CNC machining tests. During comparative tests, data was simultaneously acquired with a conventional wired DAQ board and the developed wireless DAQ system. The wireless DAQ capabilities and the overall dimensions of the devised wireless module greatly simplify its integration into various manufacturing applications.
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Nakkiew, Wasawat, and C. Richard Liu. "Finite Element Analysis for Orthogonal Cuttings of Hardened AISI 52100 by Advanced cBN-TiN Composite Coated Tools of Two Depositing cBN Particle Sizes." In ASME 2009 International Manufacturing Science and Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/msec2009-84119.

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A finite element model is developed to predict the temperature distribution and stress distribution in orthogonal machining of hardened AISI 52100 steel (62HRC) from using advanced cBN-TiN composited coating cutting tools. The advanced cBN-TiN composited coating tool is made of innovative two-stage composite coating methods: ESC (electrostatic spray coating) and CVI (chemical vapor infiltration). For a cBN-TiN composite coating on WC substrate cutting tool used in hard turning process, the ESC of nano-to-micron cBN particles forms a layer over WC-Co and TiN-TiC cermet tool inserts. CVI introduces TiN as binding material through the porous matrix to form a very dense coating. The finite element model is developed for hard turning simulations of composite coating cutting tools with different particulate particle size distributions. In this paper, two different size distributions of depositing cBN particles are investigated: cBN particle sizes of 0.5 and 2μm. Since solid Poly-crystalline Cubic Boron Nitride (PCBN) tool is the dominant cutting tool used for hard turning applications, a comparative study of this advanced composited coating tools to solid PCBN can suggest a possible comparable alternative cutting tool for hard turning applications. Solid PCBN tool provides a lower maximum temperature than cBN-TiN coated tools. A better surface finish on cutting tool surface also has a significant role in lower the maximum temperature in this study.
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Werschmoeller, Dirk, and Xiaochun Li. "Micro Thin Film Thermal Sensors Embedded Into Polycrystalline Cubic Boron Nitride (PCBN) for Advanced Machining Study." In ASME 2009 International Manufacturing Science and Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/msec2009-84332.

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Monitoring and control of thermomechanical parameters in tooling materials are imperative for improving the fundamental understanding, reliability and workpiece quality of material removal processes. Polycrystalline cubic boron nitride (PCBN) tools are being used heavily in machining of low carbon steel and superalloys. These processes are very sensitive to variation in local machining conditions and there lacks a thorough understanding of fundamental thermomechanical phenomena which can lead to abrupt tool failures. Existing sensors for monitoring machining conditions are not suitable for precision process control as they are either destructively embedded and/or do not possess the necessary spatial and temporal resolution to monitor temperature during machining effectively. This paper presents a novel approach to obtain temperature data from a close distance to the tool cutting edge. An array of 9 micro thin film thermocouples, fabricated using standard microfabrication methods, has been embedded into a PCBN cutting tool using a diffusion bonding technique. Scanning electron microscopy (SEM) was performed to examine material interactions at the bonding interface and determine optimal bonding parameters. The sensors were statically and dynamically characterized using a tube furnace and rapid laser heating, respectively. They exhibit good linearity, sensitivity and very fast response time. The instrumented PCBN inserts were applied in machining experiments. Being embedded into the tool at a total distance of only 260 μm from the cutting edge, the micro sensors enabled the detection of local cutting temperature changes caused by interrupted machining. The data obtained during cutting demonstrate the functionality of the tool-embedded micro thermal sensors and their value for fast, accurate and reliable monitoring and control of machining processes.
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Li, Linwen, Bin Li, Xiaochun Li, and Kornel F. Ehmann. "Experimental Investigation of Hard Turning Mechanisms by PCBN Tooling Embedded Micro Thin Film Thermocouples." In ASME 2012 International Manufacturing Science and Engineering Conference collocated with the 40th North American Manufacturing Research Conference and in participation with the International Conference on Tribology Materials and Processing. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/msec2012-7262.

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Temperature-distribution measurements in cutting tools during the machining process are extremely difficult and remain an unresolved problem. In this paper, cutting temperature distributions are measured by thin film thermocouples (TFTCs) embedded into Polycrystalline Cubic Boron Nitride (PCBN) cutting inserts in the immediate vicinity of the tool-chip interface. Using these measurements, steady and dynamic phenomena during hard turning as well as the chip morphology and formation process were analyzed based on the cutting temperature distributions in the insert. The relationship between the cutting temperature-field distributions in the PCBN insert and the segmented chip formation is analyzed using temperature-distribution mapping. It is shown that the temperature-distribution in the cutting zone depends on the shearing band distribution in the chip and the thermal transfer rate from the heat generation zone to the cutting tool. Furthermore, it became evident that the material flow stress and the shearing bands greatly affect not only the chip formation morphology but also the cutting temperature field distributions in the cutting zone of the cutting insert.
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Werschmoeller, Dirk, and Xiaochun Li. "Measurement of Tool Internal Temperatures in the Tool-Chip Contact Region by Embedded Thin Film Micro Thermocouples." In ASME 2010 International Manufacturing Science and Engineering Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/msec2010-34176.

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Monitoring and controlling thermomechanical parameters in tooling materials are imperative for improving the fundamental understanding, reliability and workpiece quality of material removal processes. Polycrystalline boron nitride (PCBN) tools are being used heavily in hard machining/turning. These processes are very sensitive to variation in local machining conditions at tool-workpiece interface and lack a thorough understanding of fundamental thermo-mechanical phenomena, both often leading to abrupt tool failures. Existing sensors to monitor the machining conditions are not suitable for robust process control as they are either destructively embedded and/or don’t possess the necessary spatial and temporal resolution to monitor temperature during machining at the cutting tip/edge effectively. This paper presents an emerging approach for assessing dynamic temperatures in the close vicinity of the tool cutting edge. An array of 10 micro thin film micro thermocouples, fabricated using adapted semiconductor microfabrication methods, has been embedded into PCBN using a modified diffusion bonding technique. Scanning electron microscopy was performed to examine material interactions at the bonding interface and determine optimal bonding parameters. The sensors’ performance is statically and dynamically characterized. They show good linearity, sensitivity and very fast response time.
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Campos, Clarianne, Denis Boing, and Rolf Schroeter. "ANÁLISE DA SUPERFÍCIE USINADA NO TORNEAMENTO DE MATERIAIS ENDURECIDOS COM FERRAMENTA DE PCBN." In COBEF 2019. ABCM, 2019. http://dx.doi.org/10.26678/abcm.cobef2019.cof2019-0498.

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Cohen, Joel H., and James H. Dailey. "New Machining Method for Nickel Based Thermal Sprays." In ASME 1994 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1994. http://dx.doi.org/10.1115/94-gt-399.

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The routine overhaul and repair of gas turbine components requires dimensional restoration of many components. This process is usually accomplished by using various thermal sprays to build up the worn part surface and then machining or grinding the thermal sprays to correct part tolerances and dimensions. These surfaces usually contain numerous holes that generate heavily interrupted surfaces to be machined. The combination of interrupted cuts and a very wear resistant thermal spray causes rapid tool wear on conventional carbide cutting tools. This rapid tool wear also produces poor surface finish, part taper, chipping around the hole edges, and increased tool pressure that could result in lifting or peeling of the sprayed material from the parent metal. This paper summarizes the results of machining nickel based thermal sprays with polycrystalline cubic boron nitride (PCBN) cutting tools. The tests have shown a minimum 2–5x improvement in surface finish, dimensional control, part taper and up to 10x increase in productivity. The PCBN tools also generated lower cutting forces resulting in reduced stress and higher bond strengths in the part. This paper presents the data collected and the recommended machining parameters developed under controlled conditions for machining air plasma sprayed Metco 443, Metco 450, Inconel 718, two wire arc applied TAFA 75B, TAFA 73MXC, and high velocity oxygen fuel applied Inconel 718.
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Li, Linwen, Bin Li, Kornel F. Ehmann, and Xiaochun Li. "Cutting Temperature Monitoring in Hard Turning by PCBN Inserts with Embedded Micro Sensor Arrays." In 9th International Conference on Multi-Material Micro Manufacture. Singapore: Research Publishing Services, 2012. http://dx.doi.org/10.3850/978-981-07-3353-7_276.

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Reports on the topic "PCBN"

1

Marshall, David. Reducing Fracture Tendencies in PCBN FSW Tools. Fort Belvoir, VA: Defense Technical Information Center, July 2010. http://dx.doi.org/10.21236/ada524909.

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Marshall, David B. Reducing Fracture Tendencies in PCBN FSW Tools. Fort Belvoir, VA: Defense Technical Information Center, August 2009. http://dx.doi.org/10.21236/ada504865.

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Bridges, Todd, Sandra Newell, Alan Kennedy, David Moore, Upal Ghosh, Trevor Needham, Huan Xia, Kibeum Kim, Charles Menzie, and Konrad Kulacki. Long-term stability and efficacy of historic activated carbon (AC) deployments at diverse freshwater and marine remediation sites. Engineer Research and Development Center (U.S.), November 2020. http://dx.doi.org/10.21079/11681/38781.

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A number of sites around the United States have used activated carbon (AC) amendments to remedy contaminated sediments. Variation in site-specific characteristics likely influences the long-term fate and efficacy of AC treatment. The long-term effectiveness of an AC amendment to sediment is largely unknown, as the field performance has not been monitored for more than three years. As a consequence, the focus of this research effort was to evaluate AC’s long-term (6–10 yr) performance. These assessments were performed at two pilot-scale demonstration sites, Grasse River, Massena, New York and Canal Creek, Aberdeen Proving Ground (APG), Aberdeen, Maryland, representing two distinct physical environments. Sediment core samples were collected after 6 and 10 years of remedy implementation at APG and Grasse River, respectively. Core samples were collected and sectioned to determine the current vertical distribution and persistence of AC in the field. The concentration profile of polychlorinated biphenyls (PCBs) in sediment pore water with depth was measured using passive sampling. Sediment samples from the untreated and AC-treated zones were also assessed for bioaccumulation in benthic organisms. The data collected enabled comparison of AC distribution, PCB concentrations, and bioaccumulation measured over the short- and long-term (months to years).
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Rodriguez, Giselle. PCBs in Caulk and Paint. Fort Belvoir, VA: Defense Technical Information Center, June 2010. http://dx.doi.org/10.21236/ada566851.

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Elbers, I. J. W., Guillaume ten Dam, D. P. K. H. Pereboom, and W. C. M. de Nijs. Proficiency test for dioxins, dioxin-like PCBs and non-dioxin-like PCbs in feed oil. Wageningen: RIKILT Wageningen University & Research, 2018. http://dx.doi.org/10.18174/462577.

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Klasson, K. T., and D. A. Abramowicz. Bioremediation of PCBs. CRADA final report. Office of Scientific and Technical Information (OSTI), June 1996. http://dx.doi.org/10.2172/671963.

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Foster, I., and S. Tuecke. Parallel programming with PCN. Office of Scientific and Technical Information (OSTI), December 1991. http://dx.doi.org/10.2172/5955653.

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Foster, I., and S. Tuecke. Parallel programming with PCN. Office of Scientific and Technical Information (OSTI), January 1993. http://dx.doi.org/10.2172/6681553.

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Waisner, Scott A., Agnes B. Morrow, Catherine C. Nestler, Charles Coyle, and Victor F. Medina. Chemical Degradation of PCBs in Alaskan Soils. Fort Belvoir, VA: Defense Technical Information Center, April 2011. http://dx.doi.org/10.21236/ada541875.

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Smith, John R. PCB Destruction and Mobility Reduction. Office of Scientific and Technical Information (OSTI), November 2000. http://dx.doi.org/10.2172/803840.

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