Relevant bibliographies by topics / Powder Metallurgy Gears

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Academic literature on the topic 'Powder Metallurgy Gears'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Powder Metallurgy Gears"

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Wei, D. B., H. X. Liang, S. Q. Li, F. K. Li, F. Ding, S. Y. Wang, Z. L. Liu, and P. Z. Zhang. "Microstructure and tribological behavior of W-Mo alloy coating on powder metallurgy gears based on double glow plasma surface alloying technology." Journal of Mining and Metallurgy, Section B: Metallurgy 55, no. 2 (2019): 227–34. http://dx.doi.org/10.2298/jmmb181031022d.

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In the present paper, plasma surface alloying was implemented on powder metallurgy gears to improve its wear resistance based on double glow plasma surface metallurgy technology. A W-Mo alloy coating was obtained in the process. The morphology, microstructure and phase composition were investigated by SEM, EDS and XRD. The hardness was examined by Vickers hardness test and nanoindentation test. The tribological behavior of powder metallurgy gears before and after plasma surface alloying was evaluated on a ball-on-disc reciprocating sliding tribometer under dry sliding condition at room temperature. The results indicate that the W-Mo alloy coating is homogeneous without defects, which includes deposition layer and interdiffusion layer. The average microhardness of powder metallurgy gears before and after plasma surface alloying is 145.8 HV0.1 and 344.4 HV0.1, respectively; Nano hardness of deposition layer and interdiffusion layer is 5.76 GPa, 14.35 GPa, respectively. The specific wear rate of W-Mo alloy coating is lower than original PM gears. The wear mechanism of W-Mo alloy coating is slight adhesive wear. The W-Mo alloy coating prepared by double glow plasma surface alloying technology can effectively improve wear resistance of powder metallurgy gears.
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Andersson, Michael, Magnus Bergendahl, Ulf Bjarre, Anders Eklund, Staffan Gunnarsson, Sven Haglund, Hans Hansson, et al. "Manufacturing full density powder metallurgy gears through HIP:ing." Metal Powder Report 74, no. 4 (July 2019): 199–203. http://dx.doi.org/10.1016/j.mprp.2018.12.076.

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Bao, Chong Xi, Zhou Qiang Shen, and Zheng Ping Shu. "The Application of P/M Advanced Techniques to Sintered Gears." Materials Science Forum 534-536 (January 2007): 321–24. http://dx.doi.org/10.4028/www.scientific.net/msf.534-536.321.

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The processes of P/M affect the properties of sintered gears. The different techniques of P/M lead to the different properties of sintered gears. This paper summarizes new progress in powder metallurgy for sintered gears. These progresses include warm compaction, high velocity compaction, sinter hardening, high temperature sintering, infiltration, CNC powder press and surface densification etc.
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Cetinel, Hakan, and Burak Yilmaz. "Stress Analyses of Pump Gears Produced by Powder Metallurgy." Materials Testing 55, no. 5 (May 2, 2013): 369–73. http://dx.doi.org/10.3139/120.110444.

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Zhou, Yushan. "FORM GRINDING TECHNOLOGY FOR THE MOLD OF POWDER METALLURGY GEARS." Chinese Journal of Mechanical Engineering 41, no. 01 (2005): 162. http://dx.doi.org/10.3901/jme.2005.01.162.

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Oliveira-Motta, Clayton A. de, José de Souza, Ana Paula S. de Matos Dias, Arão de Matos Dias, Eduardo Henrique de Souza Cardoso, and Lirio Schaeffer. "Straight Bevel Gears Manufacturing Analysis by Conventional Powder Metallurgy Process." IOSR Journal of Mechanical and Civil Engineering 14, no. 01 (January 2017): 27–32. http://dx.doi.org/10.9790/1684-1401042732.

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Frech, Tim, Philipp Scholzen, Christoph Loepenhaus, and Fritz Klocke. "Powder Metal Gears for Highly Loaded Powertrains: How Powder Metallurgy Supports Current Trends in Transmission Technology." SAE International Journal of Materials and Manufacturing 11, no. 4 (April 3, 2018): 431–40. http://dx.doi.org/10.4271/2018-01-0989.

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Tie, Xiao Yan, and Hua Zhang. "Mold Machining Process and Applying Technologies of Spiral Bevel Gears." Applied Mechanics and Materials 86 (August 2011): 152–55. http://dx.doi.org/10.4028/www.scientific.net/amm.86.152.

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Mold processing had been the main method of the fast development in modern industry and production, which was the way to accelerate producing efficiency and reduce the cost. The performance and accuracy was the key to realizing molding processing of spiral bevel gears. In traditional, EDM(Electrical Discharge Machining) was used in manufacturing spiral bevel gears mold, which led to low precision for large processing error in the tooth surface of electrodes. Then surface accuracy and meshing performance couldn’t achieve to the expected demands. The way of modeling by three-dimensional software became a new selection with the high surface accuracy and simple modification process to surface. There were mainly injection, powder metallurgy, precision forging, die-casting and so on.
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Fontanari, Vigilio, Alberto Molinari, Michelangelo Marini, Wolfgang Pahl, and Matteo Benedetti. "Tooth Root Bending Fatigue Strength of High-Density Sintered Small-Module Spur Gears: The Effect of Porosity and Microstructure." Metals 9, no. 5 (May 24, 2019): 599. http://dx.doi.org/10.3390/met9050599.

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The present paper is aimed at investigating the effect of porosity and microstructure on tooth root bending fatigue of small-module spur gears produced by powder metallurgy (P/M). Specifically, three steel variants differing in powder composition and alloying route were subjected either to case-hardening or sinter-hardening. The obtained results were interpreted in light of microstructural and fractographic inspections. On the basis of the Murakami a r e a method, it was found that fatigue strength is mainly dictated by the largest near-surface defect and by the hardness of the softest microstructural constituent. Owing to the very complicated shape of the critical pore, it was found that its maximum Feret diameter is the geometrical parameter that best captures the detrimental effect on fatigue.
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Li, Xinmin, Mario Sosa, Martin Andersson, and Ulf Olofsson. "A study of the efficiency of spur gears made of powder metallurgy materials – ground versus super-finished surfaces." Tribology International 95 (March 2016): 211–20. http://dx.doi.org/10.1016/j.triboint.2015.11.021.

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Dissertations / Theses on the topic "Powder Metallurgy Gears"

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Xinmin, Li. "Efficiency and wear properties of spur gears made of powder metallurgy materials." Doctoral thesis, KTH, Maskinkonstruktion (Inst.), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-187446.

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Powder metallurgy (PM) is usually used in manufacturing parts with complex geometries, such as gears and structural parts. The main attractions of PM are the high rate of material utilization, environmental friendliness of production, economic advantages (especially for complex geometries), and possibility of obtaining lighter components. To find a wide range of applications and compete with regular steel gears, PM gear transmissions should have good transmission efficiency and wear properties. Furthermore, they should have low contact noise and adequate surface fatigue properties. Because of the porosity structure of PM gears both on gear flanks and in the body, the friction and wear properties of PM gear flank contacts differ somewhat from those of regular steel gears.    This doctoral thesis examines the efficiency and wear properties of PM gears. Paper A compares the wear, friction, and damage mechanism properties of two sintered gear materials with those of a standard gear material. Paper B deals with the gear mesh torque loss mechanism of PM and regular steel gears by combining both pin-on-disc frictional and FZG efficiency tests. Paper C comparatively examines the efficiency of PM and regular steel gears by conducting FZG gear efficiency tests. Paper D focuses on the wear and friction properties of PM and regular steel gear materials treated using the triboconditioning process. Paper E studies the friction and wear properties attributable to different pore sizes in PM gear materials.    The results indicate that regular steel meshed with PM gear material and PM meshed with PM gear material are good candidate combinations for gear transmissions. This is because the porosities of PM material can lower the friction coefficient while the wear rate can be the same as or even better than that of regular steel contacts. The triboconditioning process enhances the wear resistance and reduces the friction coefficient of the PM gear material. The friction and wear coefficients of PM meshed with PM gear material display increasing trends with increasing pore size. The friction and wear coefficients of regular steel meshed with PM gear material display decreasing trends with increasing pore size.

QC 20160523

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2

Lejonklo, Caroline. "Friction and wear study of lean powder metallurgy steel in a lubricated sliding contact." Thesis, Uppsala universitet, Tillämpad materialvetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-390557.

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A fairly new technology used to produce metallic components is powder metallurgy (PM). Among the advantages with this technique are decreased cost of production for complex-shaped parts, new alloys are made possible, reduced end processing, less material loss, and vibrational damping effects. The downside is the number of pores created which can alter the tribological properties of the material. The focus of this report is to investigate how lean PM steel behaves under tribological contacts.  Friction and wear will be investigated using a pin-on-disc setup to mimic the sliding part of a gear tooth mesh. Previous studies show that the amount of wear, and if the wear increases or decreases with increased density is dependent on the degree of porosity and the pore size. This means that the wear might be minimized by optimizing the number of pores in the material and their shape and size. The result of this study shows that the friction coefficient decreases with increasing density. The wear coefficient show signs of the same correlations but further tests are needed. The main wear comes from adhesive wear, with signs of abrasive wear. The amount of abrasive wear seems to increase with an increase in density, supporting previous studies claiming that pores can trap wear debris and decrease the number of abrasive particles in the contact.
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Söderberg, Jansson Marcus, and Oskar Lundkvist. "Property Optimization of PM-gearing." Thesis, KTH, Maskinkonstruktion (Inst.), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-209549.

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The purpose of this bachelor thesis is to design and optimize a powder metal gear through FEM-analyzes. The moment of inertia and weight of the gear shall be reduced at the same time as the demands on tension and bending stiffness are met. The gear that is used as reference and will be optimized is the standard gear in the FZG-rig at the department of Machine Design at KTH. The work is initiated with a literary study. After that a CAD-model of the gear and its pinion is created in Solid Edge. Then the reference gear is analyzed in the FEM-program Ansys and control calculations are made according to standards and handbooks. Thereafter different geometry and density variations are made and tested. The tests are then compared to the reference gear. By varying the density of the gear and varying the geometry of the waist of the gear several different optimization proposals could be made. By cutting material off the waist of the gear the weight can be reduced by 6 % with an increase in bending stress of 1 %. If a bigger increase in bending stress is allowed more material can be removed. If the bending stress increase is allowed to be 5 % a decrease in weight and moment of inertia of 14 % is obtained. With an increase in deformation of 5 % a decrease of 11 % in weight and moment of inertia was obtained. The different tested geometries behave relatively equal up to a 3 % decrease in weight with respect to deformation but begins to vary considerably if the weight is further decreased. Removal of material should be symmetric around every gear tooth to avoid transmission failure which also leads to increased noise. The results show that it is better to remove material under each gear tooth rather than under the root. It is also advantageous to remove material close to the flange. Further work is required to analyze and optimize the gears even more. Fatigue tests as well as different load cases should be analyzed.
Syftet med kanditatexamensarbetet är att ta fram och egenskapsoptimera ett pulvermetallurgiskt kugghjul med hjälp av FEM-analyser. Tröghetsmomentet och vikten på kugghjulet ska minimeras samtidigt som kraven på spänningar och böjstyvhet uppfylls. Det kugghjul som används som referens och ska optimeras är standardkugghjulet i FZG-riggen på institutionen för maskinkonstruktion på KTH. Arbetet inleds med att en litteraturstudie görs. Sedan tas en CAD-modell för kugghjulet och dess tillhörande drev fram i Solid Edge. Därefter analyseras referenskugghjulet i FEM-programmet Ansys och kontrollberäkningar görs enligt standarder och handböcker. Därefter konstrueras och analyseras olika geometrier och densitetsvariationer och jämförs med referenskugghjulet. Genom att variera densiteten på kugghjulet och variera geometrin på kugghjulets liv kunde flertalet optimeringsförslag tas fram. Genom att göra en utskärning i livet kan vikten minskas med 6 % utan att böjspänningen påverkas mer än 1 %. Om en större ökning i böjspänning tillåts kan ytterligare material avlägsnas. Om böjspänningsökningen tillåts vara ca 5 % kan en viktminskning och tröghetsmomentsminskning på ca 14 % åstadkommas. Vid en deformationsökning på 5 % erhölls en viktminskning och tröghetsmomentsminskning på ca 11 %. De olika geometrier som testas beter sig relativt lika upp till 3 % viktminskning med avseende på deformation och börjar därefter variera kraftigt. Borttagning av material måste ske symmetriskt kring varje kuggtand för att transmissionsfel och därmed ökat buller ska undvikas. Det visar sig att ta bort material under kuggen är bättre än att ta bort material under kuggroten. Det gynnsamt att göra geometriska förändringar närmast flänsen på kugghjulet. Vidare arbete krävs för att analysera och optimera kugghjulen ytterligare. Utmattningstester och fler lastfall bör analyseras.
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Santos, Maurício dos. "Desenvolvimento de uma engrenagem cônica sinterizada : substituição e tecnologia." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2017. http://hdl.handle.net/10183/169341.

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Este trabalho propõe substituir o processo de usinagem que é empregado atualmente na fabricação de uma engrenagem cônica fabricada com material ABNT 8620, pelo processo de metalurgia do pó, gerando uma peça com economia de matéria prima, aumento de valor agregado e diminuição nos custos de produção. Esta peça tem como aplicação em um dispositivo utilizado na agroindústria destinado ao plantio, onde a engrenagem sofre esforços leves não necessitando ser tratada termicamente. A análise realizada neste trabalho tem como objetivo o desenvolvimento de um ferramental específico para a produção de uma engrenagem cônica sinterizada utilizando uma liga comercial da empresa Höganäs do Brasil denominada Distaloy AB, de composição Fe- Mo-Ni-Cu. As peças foram produzidas pelo processo de sinterização e analisadas em etapas diferentes do processo como: compactação, sinterização e calibragem. Na avaliação compara-se o diâmetro interno da engrenagem compactada, sinterizada e calibrada. Realizou-se um estudo dos valores de mercado entre os processos de usinagem e MP para um lote de produção de duas mil peças. As peças foram compactadas a 600MPa e sinterizadas a 1120oC, durante o tempo de 40min. Os resultados alcançados mostram a viabilidade de substituição do processo de usinagem pelo processo de metalurgia do pó para obtenção da peça de estudo, onde a economia de material e as propriedades mecânicas necessárias foram atingidas pelo componente sinterizado.
This work proposes to replace the machining process that is currently employed in the manufacture of a conical gear manufactured with ABNT 8620 material, by the process of powder metallurgy, generating a part with economy of raw material, increase of value added and decrease in production costs. This part is applied in a device used in the agroindustry destined to the planting, where the gear undergoes slight efforts not needing to be treated thermally. The analysis carried out in this work has the objective of developing a specific tooling for the production of a sintered conical gear using a commercial alloy of the company Höganäs do Brasil denominated Distaloy AB, with Fe-Mo-Ni-Cu composition. The pieces were produced by the sintering process and analyzed in different stages of the process as: compression, sintering and calibration. In the evaluation the internal diameter of the compacted, sintered and calibrated gear is compared. A study of the market values between the machining processes and MP for a production lot of two thousand pieces was carried out. The pieces were compacted at 600MPa and sintered at 1120oC for 40min. The results show the feasibility of replacing the machining process by the powder metallurgy process to obtain the study piece, where the material savings and the necessary mechanical properties were reached by the sintered component.
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Chang, Hung-Pin, and 張宏彬. "Improvement on the Precision of Powder Metallurgy Spur Gears." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/23358010467680621878.

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碩士
國立交通大學
機械工程系
90
Improvement on the Precision of Powder Metallurgy Spur Gears Student：Hung-Pin Chang Advisor：Dr. Chung-Biau Tsay Institute of Mechanical Engineering National Chiao Tung University Abstract Gear is one of the important transmission elements of machine system. The conventional cutting manufacture methods of gears, including gear hobbing, gear shaping, gear milling, gear wire cutting, ect. As to the forming processes of manufacture methods including forging, die-casting, injection molding and sintered powder-metal gears. Among them, the sintered powder-metal gear not only has great advantages of material-saving, labor-saving, cost reduction and suitable for mass production, but also has good mechanical properties for the gears. It has been widely used in automobiles, electrical machines and household appliances. In the powder-metal gear manufacturing, due to the influences of forming and sintering conditions, the unstable defect on the green compact parts’ dimensions, results in the gear profile geometric errors. Consequently, the gear transmission errors, vibration and noise occur during the gear pair meshing. Therefore, it is most important to improve the gear manufacture precision to reduce the gear transmission errors, vibration and noise. To obtain a high precision gear, the control of gear dimensions and variations is important. Therefore, design and manufacture of a good shape of forming die decide the products’ quality. This study refers to the conditions of practical powder-metallurgy manufacture process, and proceeds to experiments and gear precision measurements as well as investigation on the relationship of the powdwer-metallurgy parameters and gear precision. Furthermore, the mathematical model for spur gear is developed based on the theory of gearing, and sensitivity analyses of gear parameters and gear surface deviations are performced. Then, comparison with the results of experiments and computer simulations, in attempt to evaluate an ideal amendment on the parameters of a forming die. It enables a suitable compensation on gear surface deviations which resulted from the powder-metallurgy process, and attains a high precision powder-metallurgy gear.
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Chen, Huai-Shan, and 陳淮山. "Fatigue Test for Tooth Root Bending Strength of Powder Metallurgy Gears and Running Verification Test." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/20597408189319739105.

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碩士
國立中央大學
機械工程研究所
100
Powder　metallurgy　technology　or　PM　technology　plays　an　important　role　in　gear　manufacturing　in　recent　years　because　it　is　cost-saving　and　efficient　to　produce　small　gears　with　complex　shapes.　　However,　　the　tooth　root　fatigue　strength　of　the　PM　gear　is　reduced　because　it　is　porous.　　In　order　to　use　the　PM　gear　for　the　power　transmission,　　it　is　necessary　to　explore　the　tooth　root　fatigue　strength　of　the　PM　gear　for　gear　design. 　　In　order　to　determine　the　tooth　root　fatigue　strength　of　the　PM　gear,　　a　fatigue　test　for　single　tooth　of　a　spur　gear　was　conducted.　　The　fatigue　test　results　were　also　verified　by　a　running　test　for　the　spur　gear　pair　on　a　back-to-back　test　rig　under　real　operational　conditions.　　The　composition　of　the　testing　spur　gear　is　Fe-4Ni-0.5Mo-1.5Cu-0.6C.　　The　test　results　are　shown　as　S-N　curves　calculated　based　on　Weibull　distribution　and　ASTM　E　739-91　standard.　　The　corresponding　tooth　root　stress　is　calculated　based　on　ISO　6336-3　standard. 　　The　S-N　curves　obtained　from　the　single　tooth　fatigue　test　and　the　running　test　are　parallel.　　It　means　the　tooth　root　fatigue　strength　under　real　operational　conditions　can　be　also　estimated　from　the　single　tooth　fatigue　test,　　which　is　more　time-saving　and　cost-saving　to　conduct.　　The　available　fatigue　strength　of　a　quenched　PM　gear　with　composition　Fe-1.75Ni-0.5Mo-1.5Cu-0.6C　is　also　compared　with　that　of　the　test　gear　in　the　study.　　The　tooth　bending　strength　of　the　quenched　gear　is　lower　than　that　of　the　test　gear,　　but　it　becomes　closer　to　that　of　the　test　gear,　　in　the　range　of　high　loading　cycles.　　From　the　running　test　results,　　pitting　and　scuffing　were　also　found　on　the　tooth　flanks.
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Yu, Ming-Ta, and 游明達. "Effects of Powders on the Precision of a Powder Metallurgy Helical Gear." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/35280640716214894111.

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碩士
國立交通大學
機械工程系所
93
A helical gear is one of the important transmission elements in a machine system and often used for parallel axes gearing. The manufacture methods can be categorized into the cutting method and the non-cutting method. A powder metallurgy helical gear belongs to the non-cutting method and has great advantages of material-saving, labor-saving, fitness for mass production, cost down and good mechanical properties. It has been widely used in the industry. In the powder metallurgy helical gear manufacturing, the gear surface deviations are due to the influences of powders, green density, sintering time, sintering temperature and the design of a forming die. To improve the gear manufacture precision without changing the mechanical properties of the gears and other process parameters, correcting the shape of the forming die to compensate the metallurgy helical gear surface deviations would be feasible. This study refers to the conditions of practical powder metallurgy manufacture process, and proceeds to experiments and gear precision measurements as well as investigation on the effects of two parameters, powders and pitch circle radius, on gear precision. The relationship between gear parameters and gear surface deviations was derived from the mathematical model for the involute helical gears and the analysis of gear surface deviations. In accordance with the measurement results of experiments, an ideal correction on the parameters of a forming die could be derived from the computer simulations of gear surface deviations.
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Lai, Po-Fang, and 賴柏方. "The Design and Verification of Helical Gear Mold by Powder Metallurgy." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/15637149183314663717.

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碩士
國立中央大學
機械工程學系
104
The purpose of this paper is to improve the existing mechanism of powder metallurgy helical gear mold design. The helical gear mold of powder metallurgy due to excessive friction between the molds so that the mold life is too short. This paper is to solve the short life problem of helical gear mold of powder metallurgy that due to the friction. In this paper, the use of actively driving the rotation of the mold to solve the problem of excessive friction of the mold. Proposed the use of a hydraulic system combines rotary motion relationship of the mold. The mold can be generated by hydraulic rotary and increasing the life of the mold. This thesis designed two different forms of mechanism. Namely the use of flexible transmission drive mode and the flexible and rigid coupling. Design, manufacture and identify the problem through experimental verification. To compare the difference between traditional design and new design, design an experimental test platform to simulate the relationship with the movement of the top punch and the mold of the powder metallurgy molding machine. Then the experimental test platform combined with the new design and traditional design. The experiment is to measure the wear by friction, and compare the difference between the two designs. The experimental results show the wear of the new mold design is better than traditional mold design. The cumulative amount of wear of the new mold design is lower than 50% or more of the traditional mold design. The new mold design enhance the life of more than 2 times. In addition, without considering the additional cost of driving, the manufacturing cost of the new mold is lower than the traditional mold. The above results confirm this thesis designed the new helical gear mold of powder metallurgy can replace the traditional mold design.
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Chen, Jen-Sheng, and 陳錦盛. "Effects of Green Density and Sintering Temperature on the Profile Precision of a Powder Metallurgy Spur Gear." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/27247912544879784411.

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碩士
國立交通大學
機械工程系
91
A gear is one of the important transmission elements in a machine system. The manufacture methods of gears can be categorized into the cutting method and the non-cutting method. Manufacturing of a sintered powder-metallurgy gear belongs to the non-cutting method. The sintered powder-metallurgy gears have great advantages of cost down, suitable for mass production and fast production, etc. As the result of the improvement of powder-metallurgy manufacturing technology, including the research and development of the powder prescription and the improvement of forming methods, improves the mechanical strength substantially and raises the density of the powder-metallurgy gears. It enables the market of the powder-metallurgy gears to expand rapidly. The precision of the powder-metallurgy gears is related as closely with the powder, forming and sintering process. Powder variation, green density, sintering temperature, sintering time and the design of a forming die are some major factors affected on gear surface deviations. The number of powder-metallurgy process parameters are large, and a change of any parameter may be influences the products’ quality and precision. Research and making a breakthrough on powder-metallurgy gears are necessary for the requirements of high precision powder-metallurgy gears. This study refers to the conditions of practical powder-metallurgy manufacture process, and proceeds to experiments and gear precision measurements as well as investigation on the effects of two parameters, green density and sintering temperature, on gear precision. To provide reference materials of some amendment on the parameters of the powder-metallurgy spur gears manufacture process, and then to improve the gear manufacture precision. According to the experimental and analytical results, the effect of green density plays a very little role on the change of the produced gear size and profile precision while the sintering temperature is a very important factor. In the range of normal sintering temperature, the gear surface expands while the increase of sintering temperature, and this results in the decrease of gear pressure angle. However, the amount of gear surface expansion decreases or even becomes shrinkage when the sintering temperature continues increasing. The shrinkage of the gear profile results in the increase of gear pressure angle.
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Books on the topic "Powder Metallurgy Gears"

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Parker, Philip M. The 2007-2012 World Outlook for Powder Metallurgy Materials Excluding Bearings, Gears, and Machine Cutting Tools and All Cemented Carbide Parts. ICON Group International, Inc., 2006.

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The 2006-2011 World Outlook for Powder Metallurgy Materials Excluding Bearings, Gears, and Machine Cutting Tools and All Cemented Carbide Parts. Icon Group International, Inc., 2005.

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Book chapters on the topic "Powder Metallurgy Gears"

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Bao, Chong Xi, Zhou Qiang Shen, and Zheng Ping Shu. "The Application of P/M Advanced Techniques to Sintered Gears." In Progress in Powder Metallurgy, 321–24. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-419-7.321.

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Lee, Won Sik, Jin Man Jang, and Se Hyun Ko. "Fabrication of Micro Spur Gear in Nano Grained Al Alloy." In Progress in Powder Metallurgy, 393–96. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-419-7.393.

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Olschewski, Guido. "Dynamic Properties of Pre-Alloyed Molybdenum Steel Powders for Gear Applications." In Materials Development and Processing - Bulk Amorphous Materials, Undercooling and Powder Metallurgy, 210–15. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/3527607277.ch34.

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Kianian, Babak, and Carin Andersson. "Analysis of Manufacturing Costs for Powder Metallurgy (PM) Gear Manufacturing Processes: A Case Study of a Helical Drive Gear." In Sustainable Production, Life Cycle Engineering and Management, 471–87. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6779-7_33.

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"Powder Metallurgy Gears[1]." In Powder Metallurgy, 374–83. ASM International, 2015. http://dx.doi.org/10.31399/asm.hb.v07.a0006114.

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Kianian, B., and C. Andersson. "Sustainability-conscious Powder Metallurgy gear manufacturing – An analysis of current manufacturing challenges." In International Conference on Gears 2017, 1251–64. VDI Verlag, 2017. http://dx.doi.org/10.51202/9783181022948-1251.

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Conference papers on the topic "Powder Metallurgy Gears"

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Slattery, Richard, Francis Hanejko, Michael Marucci, and Jürgen Müller. "Powder Metallurgy of High Density Helical Gears." In SAE 2003 World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2003. http://dx.doi.org/10.4271/2003-01-0336.

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Gupta, Kapil, and N. K. Jain. "Deviations in Geometry of Miniature Gears Fabricated by Wire Electrical Discharge Machining." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-66560.

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Functional performance of a gear during its service life depends on its manufacturing quality which is decided by the amount of deviations in the gear geometry. Most of the conventional miniature gear manufacturing processes (i.e. stamping, hobbing, powder-metallurgy, extrusion, die-casting) are unable to meet the very high quality requirements of miniature gears used in highly precise and sophisticated equipments such as devices used in MEMS, NEMS and timer mechanisms, robots, micro-motors, micro-pumps etc. Present work was undertaken to explore the use of wire electrical discharge machining (WEDM) as a superior alternative miniature gear manufacturing process. This paper reports on the deviations in macro-geometry (i.e. span, tooth thickness, dimensions over two-balls) and micro-geometry (single pitch deviation, runout, and surface finish) of WEDMed miniature external spur gears (having 9.8 mm outside diameter with 12 teeth) made of brass. The best quality WEDMed miniature gear had very less macro-geometry and micro-geometry deviations and belongs to American Gear Manufacturers Association (AGMA) quality range 8–11. The average surface roughness and maximum surface roughness were 1 μm and 6.4 μm respectively. The SEM images indicate tooth surfaces free from surface defects. Attempt was made to find the probable causes of deviations in geometry of WEDMed miniature gears. Comparative study of the WEDMed miniature gear with the hobbed gear was also done. The findings of the present work prove that using appropriate process parameters WEDM can manufacture superior quality miniature gears than by any conventional process.
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Yu, Ming-Ta, and Chung-Biau Tsay. "Effects of Powders on the Precision of a Powder Metallurgy Helical Gear." In ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/detc2007-34629.

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This study refers to the conditions of practical powder metallurgy manufacture process, and proceeds to experiments and gear precision measurements as well as investigation on the effects of two parameters, powders and pitch circle radius, on gear precision. The relationship between gear parameters and gear surface deviations was derived from the mathematical model of the involute helical gear and the analysis of gear surface deviations. In accordance with the measurement results of experiments, an ideal correction on the parameters of a forming die is obtained from the computer simulations of gear surface deviations.
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Moore, Glen A., and Irving Laskin. "The AGMA Powder Metallurgy Gearing Committee Community and Its Role in the P/M Gear Industry." In International Congress & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1996. http://dx.doi.org/10.4271/960279.

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Reports on the topic "Powder Metallurgy Gears"

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Skoglund, Paul, Ola Litstrom, and Anders Flodin. Improvement of Powder Metallurgy Gears for Engines and Transmissions. Warrendale, PA: SAE International, October 2013. http://dx.doi.org/10.4271/2013-32-9102.

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