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Статті в журналах з теми "Hot process"

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Автор: Grafiati

Опубліковано: 13 вересня 2021

Оновлено: 2 лютого 2022

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1

López, Beatriz, Beatriz Pereda, Felipe Bastos, and J. M. Rodriguez-Ibabe. "Study of Nb Solubility in Hot Charging Process." Materials Science Forum 1016 (January 2021): 832–39. http://dx.doi.org/10.4028/www.scientific.net/msf.1016.832.

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The aim of this work is to investigate the dissolution behavior of Nb in hot charging hot rolling configurations. To do so, an indirect experimental procedure is used to quantify the amount of Nb present in solution before rolling. The method is based on the effect of dissolved Nb on static recrystallization kinetics due to its solute drag effect. After different thermal cycles, simulating cold and hot charging conditions, double hit torsion tests have been performed with a 0.23%C steel microalloyed with 0.03% Nb. By means of these tests, the static softening behavior has been determined. Comparison of the recrystallization times allows indirect evaluation of the amount of Nb in solid solution after each treatment. The results have been correlated with the precipitation state of the samples.

2

Naderi, Malek, Mostafa Ketabchi, Mahmoud Abbasi, and Wolfgang Bleak. "Semi-hot Stamping as an Improved Process of Hot Stamping." Journal of Materials Science & Technology 27, no. 4 (April 2011): 369–76. http://dx.doi.org/10.1016/s1005-0302(11)60076-5.

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3

Kumar, S. Ajeeth. "Tyre Retreading by Hot Retreading Process." International Journal of Applied Science and Engineering 4, no. 2 (2016): 61. http://dx.doi.org/10.5958/2322-0465.2016.00007.1.

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4

KOINOV, Toncho, and Junji KIHARA. "Process optimization for hot strip mill." Transactions of the Iron and Steel Institute of Japan 26, no. 10 (1986): 895–902. http://dx.doi.org/10.2355/isijinternational1966.26.895.

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5

Reardon, Brian J. "Optimizing the Hot Isostatic Pressing Process." Materials and Manufacturing Processes 18, no. 3 (January 8, 2003): 493–508. http://dx.doi.org/10.1081/amp-120022024.

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6

Atack, P. A., and I. S. Robinson. "Adaptation of hot mill process models." Journal of Materials Processing Technology 60, no. 1-4 (June 1996): 535–42. http://dx.doi.org/10.1016/0924-0136(96)02383-7.

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7

Yoshida, Yoshinori. "Numerical process simulation of hot forming." Journal of Japan Institute of Light Metals 71, no. 3 (March 15, 2021): 152–57. http://dx.doi.org/10.2464/jilm.71.152.

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8

Rolfe, Bernard, Amir Abdollahpoor, Xiang Jun Chen, Michael Pereira, and Na Min Xiao. "Robustness of the Tailored Hot Stamping Process." Advanced Materials Research 1063 (December 2014): 177–80. http://dx.doi.org/10.4028/www.scientific.net/amr.1063.177.

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The final mechanical properties of hot stamped components are affected by many process and material parameters due to the multidisciplinary nature of this thermal-mechanical-metallurgical process. The phase transformation, which depends on the temperature field and history, determines the final microstructure and consequently the final mechanical properties. Tailored hot stamping parts – where the cooling rates are locally chosen to achieve structures with graded properties – has been increasingly adopted in the automotive industry. Robustness of the final part properties is more critical than in the conventional hot stamping. In this paper, the robustness of a tailored hot stamping set-up is investigated. The results show that tailored hot stamping is very sensitive to tooling temperature, followed by latent heat radiation emissivity, and convection film coefficient. Traditional hot stamping has higher robustness compared to tailored hot stamping, with respect to the stamped component’s final material properties (i.e. phase fraction, hardness).

9

Jia, Zhining. "Process and property of hot-rolled stainless steel/carbon steel cladding bar." Functional materials 23, no. 2 (June 15, 2016): 243–48. http://dx.doi.org/10.15407/fm23.02.243.

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10

Han, Yong Hui, Da Qing Cang, and Wen Bin Dai. "Optimization of Co-Injection Desulfurization of Vanadium Bearing Hot Metal." Key Engineering Materials 744 (July 2017): 239–43. http://dx.doi.org/10.4028/www.scientific.net/kem.744.239.

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The desulphurization process parameters of vanadium bearing hot metal were optimized. It is found that it has the best desulfurization effect in 100t hot metal ladle, when the lance position is 280mm, the ratio of lime to Mg is 3:1, and the Mg injection rate is 9kg/min. The Si and Ti content of hot metal can increase the activity of S. With the increase of Si and Ti content of hot metal, the final sulfur content has a reduction trend. When the content of Si and Ti is lower than 0.35%, the final sulfur content of hot metal increases, and the hit rate decreases. The effect of hot metal temperature on desulfurization end point hit rate is obvious. When the hot metal temperature is between 1300~1320°C, the hit rate of desulfurization end point is higher. When the temperature is below 1300°C or above 1320°C, the sulfur content increases. After optimization of process parameters, the Mg and lime consumption per ton of hot iron are reduced by 0.11kg and 0.54kg, respectively, with the average hit rate of desulfurization end point increased by 22.6% and 10.7%, respectively.

11

Lee, Jong-Hyeon, Jeong-Seok Kang, Jin-Taek Kim, Byung-Joon Baek, Sung Hyuk Lim, Jun-Seok Lim, and Hyeong-Jin Kim. "Thermal Behavior of Hot Strip in Finishing Mill of Hot Rolling Process." International Journal of Hybrid Information Technology 9, no. 10 (October 31, 2016): 11–20. http://dx.doi.org/10.14257/ijhit.2016.9.10.02.

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12

Cai, Xing Fu, Yong Zhi Huang, Yun Gang Li, and Li Na Zhao. "Production Process and Technology Development of Hot-Dip Galvanizing." Applied Mechanics and Materials 488-489 (January 2014): 61–65. http://dx.doi.org/10.4028/www.scientific.net/amm.488-489.61.

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Development process of Hot-dip galvanizing technology and characteristics of different production methods were reviewed in this paper. Presently, the UEC method was utilized widely because of its advantages like high output, high quality, energy saving, lower consumption and low products cost. To improved the corrosion resistance of the coating and declining the cost of hot-dip galvanizing, hot-dip galvanizing alloyed coating has been developed. Although the general hot-dip galvanizing has been developed rapidly in China, we should make great efforts to research deeply and improve the hot-dip galvanizing technology, especilly in the areas such as zinc alloy plating and the corresponding hot-dip galvanizing technology.

13

Zajac, J., P. Beraxa, P. Michalík, F. Botko, and M. Pollák. "Simulation of Weld Elbows Hot Forming Process." International Journal of Modeling and Optimization 6, no. 2 (April 2016): 77–80. http://dx.doi.org/10.7763/ijmo.2016.v6.507.

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14

KUROKI, Hironori, Takanori KUROKI, and Yuji YANAGIDA. "Composite processing with hot isostatic pressing process." Journal of the Japan Welding Society 58, no. 6 (1989): 435–40. http://dx.doi.org/10.2207/qjjws1943.58.435.

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15

SUGITANI, Tsuneo. "The development of hot gas desulfurization process." Journal of the Fuel Society of Japan 68, no. 9 (1989): 787–95. http://dx.doi.org/10.3775/jie.68.9_787.

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16

You, Xiang-mi, Ning-chuan Yang, Ling Wu, and Jiang Diao. "The Necessity of Hot Metal Desiliconization Process." Procedia Earth and Planetary Science 2 (2011): 116–21. http://dx.doi.org/10.1016/j.proeps.2011.09.019.

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17

Ong, N. S., Y. H. Koh, and Y. Q. Fu. "Microlens array produced using hot embossing process." Microelectronic Engineering 60, no. 3-4 (April 2002): 365–79. http://dx.doi.org/10.1016/s0167-9317(01)00695-5.

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18

Meyer, B. S. "The r-process in the hot bubble." Journal of Physics G: Nuclear and Particle Physics 19, S (December 1, 1993): S197—S208. http://dx.doi.org/10.1088/0954-3899/19/s/017.

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19

Bataille, C., E. Luc, M. Bigerelle, R. Deltombe, and M. Dubar. "Rolls wear characterization in hot rolling process." Tribology International 100 (August 2016): 328–37. http://dx.doi.org/10.1016/j.triboint.2016.03.012.

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20

Tang, ZhiGang, Weiyang Fei, and Yi Oli. "CO2 capture by improved hot potash process." Energy Procedia 4 (2011): 307–17. http://dx.doi.org/10.1016/j.egypro.2011.01.056.

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21

Baigelman, Walter, and John Coldiron. "The UR Hot Line: Purpose and Process." American Journal of Medical Quality 8, no. 1 (March 1993): 6–11. http://dx.doi.org/10.1177/0885713x9300800103.

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22

Siess, L., and S. Goriely. "S-process nucleosynthesis during Hot dredge-ups." Nuclear Physics A 758 (July 2005): 565–68. http://dx.doi.org/10.1016/j.nuclphysa.2005.05.104.

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23

Serajzadeh, Siamak. "Thermo-Mechanical Modeling of Hot Forging Process." Journal of Engineering Materials and Technology 126, no. 4 (October 1, 2004): 406–12. http://dx.doi.org/10.1115/1.1631029.

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In the present study, a mathematical model has been developed to evaluate temperature and strain fields as well as dynamic and static microstructural changes during the nonisothermal forging process. To do so, a finite element analysis and a microstructural model based on Bergstrom’s model have been coupled for predicting temperature history, velocity and strain fields as well as phase transformations within the metal during and after hot forging. To verify the results of the model, theoretical predictions for loadstroke behavior and austenite grain size have been compared with experimental results for two grades of steel.

24

Yao, Donggang, and Ramasubramani Kuduva-Raman-Thanumoorthy. "An enlarged process window for hot embossing." Journal of Micromechanics and Microengineering 18, no. 4 (March 14, 2008): 045023. http://dx.doi.org/10.1088/0960-1317/18/4/045023.

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25

Datta, Proyag, and Jost Goettert. "Method for polymer hot embossing process development." Microsystem Technologies 13, no. 3-4 (May 19, 2006): 265–70. http://dx.doi.org/10.1007/s00542-006-0183-2.

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26

Yun, Dongwon, Jonghyun Kim, Myungjin Kim, Do-Young Kim, Junsang Kwon, and Jungkook Hwang. "Impact Print-Type Hot Embossing Process Technology." Advanced Engineering Materials 20, no. 9 (June 25, 2018): 1800386. http://dx.doi.org/10.1002/adem.201800386.

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27

Lagarde, D., H. Carrère, P. M. Chassaing, A. Balocchi, X. Marie, N. Balkan, and W. J. Schaff. "Hot carrier relaxation process in InGaN epilayers." physica status solidi (b) 248, no. 5 (April 7, 2011): 1180–82. http://dx.doi.org/10.1002/pssb.201000790.

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28

Lee, Seong Noh, Taejoon Kouh, In-Bo Shim, and Hyun Ju Shim. "Hyperthermia Properties of Fe3O4Nanoparticle Synthesized by Hot-injection Polyol Process." Journal of the Korean Magnetics Society 24, no. 2 (April 30, 2014): 51–55. http://dx.doi.org/10.4283/jkms.2014.24.2.051.

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29

Kim, Jae-Hong, Seon-Bong Lee, and Byung-Min Kim. "Construction of Process Window to Predict Hardness in Tailored Tool Thermomechanical Treatment and its Application." Metals 9, no. 1 (January 7, 2019): 50. http://dx.doi.org/10.3390/met9010050.

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Recently, in order to improve crashworthiness and achieve weight reduction of car body, a hot stamping process has been applied to the production of the part with tailored properties using tailored tool thermomechanical treatment. In the tailored tool thermomechanical treatment process, process parameters influence the mechanical properties of final product such as strength and hardness. Therefore, the prediction of hardness for final product is very important to manufacture hot-stamped part considering various process parameters. The purpose of this study is to propose a process window, which can predict hardness for various process parameters in tailored tool thermomechanical treatment. To determine the process window, finite element (FE) simulation coupled with quench factor analysis (QFA) has been performed for combinations of various process parameters. Subsequently, the process window was constructed through the training of artificial neural network (ANN) and experiment of tailored tool thermomechanical treatment for hat-shaped part was performed to verify effectiveness of hardness prediction. Then, the process parameters were determined from process window for hot stamping of the hat-shaped part with the required distribution of hardness. Hardness predicted by process window was in good agreement with measured one within 3.1% error in additional experiment. Therefore, the suggested process window can be used efficiently for hardness prediction and determination of process parameters in tailored tool thermomechanical treatment of hot-stamping parts.

30

Lee, Jin Kyu, Shae K. Kim, and Young Chul Lee. "Development of Novel Hot Chamber Rheo-Diecasting Process." Solid State Phenomena 141-143 (July 2008): 191–94. http://dx.doi.org/10.4028/www.scientific.net/ssp.141-143.191.

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Novel hot chamber rheo-diecasting process has been successfully developed. It requires no additional processing equipment except commonly used hot chamber diecasting machine, no molten metal control like grain refinement procedure and no additional cycling time to produce slurry-on-demand. Additionally, it could lower molten metal temperature in a furnace. Process concept of novel hot chamber rheo-diecasting is simply based on the paradigm shift from HOW to WHERE for producing slurry-on-demand. This paper will demonstrate the possibility to achieve slurry-on-demand by novel hot chamber rheo-diecasting and the advantages for 3Cs applications.

31

Ling, Qi Fei, Xin Gong Li, and Yong Lin Yan. "Study on Hot-Pressing Process of Low-Cost Straw Particle Board." Applied Mechanics and Materials 204-208 (October 2012): 3624–28. http://dx.doi.org/10.4028/www.scientific.net/amm.204-208.3624.

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The mixture of isocyanate and urea-formaldehyde adhesive resin was used to manufacture low-cost straw particle board by hot-pressing process. Influence of the hot-pressing temperature, hot-pressing time, board density and the amount of isocyanate adhesive on straw particle board mechanical properties were studied. The resulted showed that, within a certain range, the straw particle board physics performance was improved with the increase of hot-pressing temperature, hot-pressing time, board density and the amount of isocyanate adhesive. The proper hot-pressing process of cost-straw particleboard is hot-pressing time for 40s/mm, MDI applied amount of 3%,a density of 0.7 g/cm3, hot-pressing temperature of 180 °C

32

Licheng Yang, Jingxiang Hu, Liwei Ning, Xinli Xu, and Jinchen Ji. "Effect of Process Parameters on Thermal History in Hot Rolling Process." Journal of Convergence Information Technology 8, no. 7 (April 15, 2013): 400–408. http://dx.doi.org/10.4156/jcit.vol8.issue7.52.

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33

Swetha Patil, Swetha Patil, Nitin k. Kamble Nitin k. Kamble, and S. S. Sarnobat S. S. Sarnobat. "Multi-response Optimization of Hot Machining Process Using Grey Relational Analysis (GRA) Method." Indian Journal of Applied Research 3, no. 10 (October 1, 2011): 1–6. http://dx.doi.org/10.15373/2249555x/oct2013/43.

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34

Meng, Jiang, Lian Cheng Ren, Yan Zhang, and Yue Li Chen. "Heavy Oil Gathering Process Test Research." Advanced Materials Research 608-609 (December 2012): 1424–27. http://dx.doi.org/10.4028/www.scientific.net/amr.608-609.1424.

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In the present, Xintan Kendong 451-the 4th Kendong union station gathering is heavy oil mixed with hot water process and open operation mode. In the pipeline, without the variation of water content, in closed gathering means, mixed with hot water; mixing activity water and emulsifying gathering process are tested. The results show that the heavy oil gathering process of selection and gathering distance are related, for little variation of the water content and the flow, at about 50 °C. The distance is shorter in the gathering, the use of hot water mixed gathering process more reasonable, when gathering distance is longer, selection of emulsion pipeline gathering process more reasonable.

35

CHEN, Huiqin. "Establishment of Hot Processing Maps and Hot Ring Rolling Process of 42CrMo Steel." Journal of Mechanical Engineering 50, no. 16 (2014): 89. http://dx.doi.org/10.3901/jme.2014.16.089.

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36

Shin, Jun-Ho, Kyung-Hun Lee, Byung-Min Kim, and Dae-Cheol Ko. "Probability assessment of mechanical trimming using hot half-trimming in hot stamping process." MATEC Web of Conferences 21 (2015): 05001. http://dx.doi.org/10.1051/matecconf/20152105001.

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37

Yoon, Young Ok, and Shae K. Kim. "Thixoextrusion Process of AZ31 Mg Wrought Alloy." Solid State Phenomena 116-117 (October 2006): 787–90. http://dx.doi.org/10.4028/www.scientific.net/ssp.116-117.787.

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Thixoextrusion process has been developed for improving productivity, reducing extrusion pressure, extending die life and even cost saving due to low energy consumption compared with conventional extrusion process. The present study focuses on AZ31 Mg wrought alloy to investigate the potential industrial applications of thixoextrusion process. The maximum extrusion pressures of thixoextrusion process were very lower than that of hot extrusion process. The average grain sizes of thixoextruded specimens were bigger than average grain sizes of hot extruded specimens. However, the grains of the thixoextruded specimens did not show any asymmetry. Also, the microstructures of thixoextruded specimens did not show any dendrites or rosette-like structures. The values of tensile strength and hardness of thixoextruded specimens were lower than that of hot extruded specimens. The specimens manufactured by the thixoextrusion were usually rather soft and their tensile strength was lower than those of hot extruded specimens. If necessary, their low tensile strength can be improved through appropriate heat.

38

Umerenkov, Yevgeniy, Elina Umerenkova, Ekaterina Pakhomova, and Natalia Semicheva. "Process modelling of seasonal hot water supply heliosystem." E3S Web of Conferences 164 (2020): 13009. http://dx.doi.org/10.1051/e3sconf/202016413009.

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A variant of the problem statement is proposed to develop an algorithm for calculating a solar collector of hot water supply for an individual dwelling. The purpose of the calculations is to determine the approximate values of the main characteristics of the heliosystem of hot water supply, which affect the technical and economic indicators of the system and determine the operating mode of the system, its comfort in use and maintenance.

39

CHEN, WEI, H. WANG, LEI ZHANG, and XIUSHAN TANG. "DEVELOPMENT OF HOT DRAWING PROCESS FOR NITINOL TUBE." International Journal of Modern Physics B 23, no. 06n07 (March 20, 2009): 1968–74. http://dx.doi.org/10.1142/s0217979209061913.

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In recent years, Nitinol, near-equiatomic nickel-titanium alloys, have found growing applications in medical technology and joining technology, due to their special characteristics such as shape memory, superelasticity and biocompatibility. The production of Nitinol tube cost-effectively remains a technical challenge. In this paper, we describe a hot drawing process for Nitinol tube production. A Nitinol tube blank and a metal core are assembled together. The assembly is hot drawn for several passes to a final diameter. The metal core is then plastically stretched to reduce its diameter and removed from the tube. Hot drawing process has been applied to Ni 50.7 Ti and Ni 47 Ti 44 Nb 9 alloys. Nitinol tubes of 13.6 mm outer diameter and 1 mm wall thickness have been successfully produced from a tube blank of 20 mm outer diameter and 3.5 mm thickness.

40

Sivarao, Mohd Fairuz Dimin, N. M. F. Faris, A. Hambali, Sivakumar Dhar Malingam, and S. M. Sapuan. "Analytical Hierarchy Process for Design Selection of Micro Hot-Marking Tool." Applied Mechanics and Materials 699 (November 2014): 897–902. http://dx.doi.org/10.4028/www.scientific.net/amm.699.897.

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Veracious concept selection process is crucial in design engineering where, a concept with concise description will fulfill customers’ requirements. Failure in concept selection can lead to inaccurate design which will result in unnecessary process repetition of the initial stage. One of the best tools that can be used in determining the best design concept is Analytical Hierarchy Process (AHP). Micro Hot-Marking Tool (HMT) is a super-finished tool with micro tip which is to be used for alphabetical marking process using CNC milling machine. In this research, AHP was successfully employed in selecting design concept for HMT. Four significant and robust concepts were analyzed, namely C1, C2, C3 & C4. Concept 2 (C2) has been chosen as the best concept with the highest score of 27% among all the evaluated concepts which will be taken into next design stage.

41

Fukushima, Yoshiaki, Xianping Meng, Kazumichi Yanagisawa, and Nakamichi Yamasaki. "Densification Process of Sepiolite under Hydrothermal Hot-pressing." Journal of the Japan Society of Powder and Powder Metallurgy 40, no. 3 (1993): 355–58. http://dx.doi.org/10.2497/jjspm.40.355.

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42

Liu, Gang, Guo Zhong Zhang, and Yuan Yuan Zhang. "Study on the Hot Oil Pipelines’ Cooling Process." Advanced Materials Research 433-440 (January 2012): 4396–400. http://dx.doi.org/10.4028/www.scientific.net/amr.433-440.4396.

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The characteristics of the cooling of waxy crude in pipelines during shutdown depend on the insulation layer thermal resistance and the environment characteristics around the pipe. The crude cooling process in the pipeline is a unsteady heat transfer problem with phase change and a moving phase interface while the wax precipitattion, the properties of the crude depend on the temperature deeply. The cooling process of the hot oil pipeline is simulated. It shows that the computation results are consistent with the test results, based on which analysis has been done, which reveals that many factors affects the cooling. With the shutdown time goes by, high temperature area which lies upper inside the pipe as the result of natural convection after shutdown would move adown gradually to the lower part inside pipe. And the bigger the pipe is, the longer the safety shutdown is; the higher original temperature also contributes to the safety restart.

43

Liu, Wen Long, Da Ming Wu, Ying Liu, and Xiu Ting Zheng. "The Research of the Extrusion Hot Embossing Process." Advanced Materials Research 337 (September 2011): 323–27. http://dx.doi.org/10.4028/www.scientific.net/amr.337.323.

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In this paper,we analysed the problems that existed in the extrusion hot embossing process.To slove these problems,we designed a new extrusion hot embossing process and verified the effectiveness and feasibility of this process through experiments.The thickness and temperature of the extruded polymer film were affected by various factors.It is very difficult to ensure the uniformity of thickness and temperature before the polymer film enters into the hot embossing machine.Therefore,we add a planish unit and a temperature control unit to ensure the uniformity of thickness and temperature of the polymer film.At the same time,we produce the polymer film with microstructure on its surface by this two differern process sepatately and make some tests.The results show that:the new process greatly improved the uniformity of the thickness and temperature compared with the original embossing process.In this new process the uniformity of the thickness and temperature was better ensured.

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Chen, Li, Xianpeng Wang, and Lixin Tang. "Operation Optimization in the Hot-Rolling Production Process." Industrial & Engineering Chemistry Research 53, no. 28 (July 2014): 11393–410. http://dx.doi.org/10.1021/ie404409r.

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TAKEISHI, Yoshiaki, Akiyoshi YAMAUCHI, and Sumitaka MIYAUCHI. "Gas Wiping Mechanism in Hot-Dip Coating Process." Tetsu-to-Hagane 81, no. 6 (1995): 643–48. http://dx.doi.org/10.2355/tetsutohagane1955.81.6_643.

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50

Caspersen, Leif, Karsten Felsvang, and Christian Schwartzbach. "4560543 Process for desulfurization of hot waste gas." Atmospheric Environment (1967) 20, no. 6 (January 1986): i. http://dx.doi.org/10.1016/0004-6981(86)90172-1.

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