Journal articles: 'Metal injection molding'

1

OKUBO, Kenji. "Metal Injection Molding." Journal of the Japan Society for Technology of Plasticity 56, no. 651 (2015): 261–64. http://dx.doi.org/10.9773/sosei.56.261.

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Hourng, Lih-Wu, and Yau Si Lin. "Numerical Simulation of Debinding Process in Metal Injection Molding." International Journal of Modeling and Optimization 4, no. 6 (December 2014): 421–25. http://dx.doi.org/10.7763/ijmo.2014.v4.411.

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Bazlov, V. A., T. Z. Mamuladze, K. N. Kharitonov, M. V. Efimenko, O. I. Golenkov, A. A. Pronskikh, A. A. Panchenko, and V. V. Pavlov. "CAPABILITIES INJECTION MOLDING OF METAL POWDERS (MIM – METAL INJECTION MOLDING) THE PRODUCTION OF MEDICAL PRODUCTS." International Journal of Applied and Fundamental Research (Международный журнал прикладных и фундаментальных исследований), no. 2 2020 (2020): 64–68. http://dx.doi.org/10.17513/mjpfi.13011.

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Hartwig, T., G. Veltl, F. Petzoldt, H. Kunze, R. Scholl, and B. Kieback. "Powders for metal injection molding." Journal of the European Ceramic Society 18, no. 9 (January 1998): 1211–16. http://dx.doi.org/10.1016/s0955-2219(98)00044-2.

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Miranda, Rosa. "Handbook of metal injection molding." International Journal of Environmental Studies 70, no. 1 (February 2013): 165. http://dx.doi.org/10.1080/00207233.2013.763661.

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Zheng, Zou Shun, and Rui Rui Leng. "The Intelligent Control Method of the Density of the Metal Injection Molding Billet Based on ANN." Materials Science Forum 749 (March 2013): 161–67. http://dx.doi.org/10.4028/www.scientific.net/msf.749.161.

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According to the metal powder injection molding process, the main influence factors of injection molding billet density distribution (such as: injection velocity, injection temperature, injection pressure, etc) was analyzed and a multiple input & multiple output BP neural network model for injection molding was build up to predict the density distribution of the billet intelligently based on ANN and GA. In addition, in light of the requirements for the density distribution of the metal injection molding billet, the influence factors were controlled intelligently. Applying this model in the metal injecting process, the density distribution of billet was predicted according to the injection parameters and the injection parameters was optimized according to the required density distribution of the billet. As the result, the error was less than 5% between the prediction values and the actual values of the density distribution of billet. With the optimized injection parameters to the injection process, the density distribution of billet closed to the requirements was achieved.

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Michaeli, Walter, and Raffael Bielzer. "Metal injection molding: Shaping sintered metal parts." Advanced Materials 3, no. 5 (May 1991): 260–62. http://dx.doi.org/10.1002/adma.19910030511.

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C, Veeresh Nayak, Ramesh MR, Vijay Desai, and Sudip Kumar Samanta. "Sintering metal injection molding parts of tungsten-based steel using microwave and conventional heating methods." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 233, no. 11 (December 19, 2018): 2138–46. http://dx.doi.org/10.1177/0954405418816853.

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In recent years, the near net shape metal injection molding process combines desirable features of plastic injection molding and powder metallurgy processes to gain high strength-to-weight ratio for manufacturing complex-shaped parts. The metal injection molding process consists of mixing, molding, debinding, and sintering. Microwave processing has attracted much attention in global research because of its unique features such as its ability to heat and sinter a wide variety of metals and its significant advantages in energy efficiency, processing speed, and compatibility. Also, it presents few environmental risks and can produce refined microstructures. The injected samples to be sintered are composed of fine tool steel metal powder and binders, stearic acid, paraffin wax, low-density polyethylene, and polyethylene glycol (600). In recent years, microwave-assisted post-treatment is considered a novel method for processing green parts. In this work, the green parts are subjected to high-intensity microwave fields which operate at a frequency of 2.45 GHz. Metal injection molding compacts were sintered using multi-mode microwave radiation. The sintering of a metal injection molding compact by microwaves has hardly been reported. The metal injection molding compact showed better results than those produced by sintering with conventional heating. This study evaluates the effect of conventional sintering and microwave sintering on mechanical properties. By optimizing the sintering process, increased sintered hardness, a more homogeneous microstructure, and greater shrinkage were obtained using microwave-assisted sintering.

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NISHIYABU, Kazuaki, Kenichi KAKISHITA, Akio YUZUKI, Toshiko OSADA, and Shigeo TANAKA. "Advantages of Micro Metal Injection Molding by Minute Mixing-Injection Molding Machine." Proceedings of the Materials and processing conference 2004.12 (2004): 81–82. http://dx.doi.org/10.1299/jsmemp.2004.12.81.

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Muhamad, Norhamidi, Che Hassan Che Harun, and Murtadhahadi. "C-14 OPTIMISATION OF INJECTION PARAMETERS IN METAL INJECTION MOLDING (MIM) PROCESS(Session: EDM/MIM)." Proceedings of the Asian Symposium on Materials and Processing 2006 (2006): 61. http://dx.doi.org/10.1299/jsmeasmp.2006.61.

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Miura, Hideshi, Takeharu Baba, Shinji Andou, and Tadatoshi Honda. "Optimization of the Molding Conditions for Metal Injection Molding." Journal of the Japan Society of Powder and Powder Metallurgy 41, no. 3 (1994): 240–43. http://dx.doi.org/10.2497/jjspm.41.240.

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Miura, Hideshi. "Recent Development of Metal Injection Molding." Journal of the Japan Society of Powder and Powder Metallurgy 56, no. 5 (2009): 242. http://dx.doi.org/10.2497/jjspm.56.242.

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Huang, Baiyun, Shuquan Liang, and Xuanhui Qu. "The rheology of metal injection molding." Journal of Materials Processing Technology 137, no. 1-3 (June 2003): 132–37. http://dx.doi.org/10.1016/s0924-0136(02)01100-7.

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NAKAMURA, Hideki. "Progress of Metal Powder Injection Molding." Tetsu-to-Hagane 76, no. 5 (1990): 660–66. http://dx.doi.org/10.2355/tetsutohagane1955.76.5_660.

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15

Pease, Leander F. "Global Outlook for Metal Injection Molding." JOM 40, no. 4 (April 1988): 20–21. http://dx.doi.org/10.1007/bf03259014.

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Froes, F. H. Sam. "Advances in titanium metal injection molding." Powder Metallurgy and Metal Ceramics 46, no. 5-6 (May 2007): 303–10. http://dx.doi.org/10.1007/s11106-007-0048-y.

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Li, Duxin, Haitao Hou, Zhaoqiang Tan, and Kun Lee. "Metal injection molding of pure molybdenum." Advanced Powder Technology 20, no. 5 (September 2009): 480–87. http://dx.doi.org/10.1016/j.apt.2009.05.005.

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Liang, Shu-quan, Yan Tang, and Bai-yun Huang. "Rheology in metal powder injection molding." Journal of Central South University of Technology 14, S1 (February 2007): 372–77. http://dx.doi.org/10.1007/s11771-007-0285-8.

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He, Yi Qiang, Bin Qiao, Jian Ming Yang, and Li Chao Feng. "Research Status and Developing of Metal Injection Molding." Advanced Materials Research 629 (December 2012): 100–104. http://dx.doi.org/10.4028/www.scientific.net/amr.629.100.

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Metal injection molding(MIM) is a high efficient and near net shape manufacturing technology, which is appropriate for parts of small size and complex shape. MIM provides a viable method to fabricate metal and metal matrix composites with discontinuous reinforcements, and micro metal injection molding (μMIM) is applied to manufacturing products at micro scale. The status of the research and development of MIM and μMIM are reviewed. Processes including mixing, injection molding and subsequent debinding and sintering are summarized. And technical characteristic, injection processing and application of μMIM are introduced. The disadvantages in mixing, injection molding and debinding processes limit MIM to fabricating components with small size, low precision and mechanical properties, and it is necessary to prevent the powder from reuniting and avoid any oxidation and impurity during μMIM process. Further investigations in these areas will give rise to being explored of full potential of MIM technology.

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Saidin, Hafeiz, and M. Azuddin. "Preparation of Aluminum Feedstock for Green Part Specimen Using Metal Injection Molding." Applied Mechanics and Materials 465-466 (December 2013): 1250–54. http://dx.doi.org/10.4028/www.scientific.net/amm.465-466.1250.

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In metal injection molding, to identify the homogenous aluminum based feedstock is a challenging issues. In this study, a metal injection molding of aluminum feedstock which contains of high density polyethylene, stearic acid and paraffin wax as binder system was performed. The feedstock are used to produce tensile and gear shape green specimens using injection molding machine. The process ability of the metal injection molding feedstock depends on different parameters such as their binder composition and amount of metal powder used. From this study, the percentage of volume shrinkage experienced a sudden increase at the metal composition more than 50%. It also shown that, the paraffin wax content, affects the feedstock performances.

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Shim, Min Chul, Kyu Sik Kim, Kyu Sang Cho, Ji Sik Kim, and Kee Ahn Lee. "High Temperature Mechanical Properties of IN 713C Alloy Fabricated by Metal Injection Molding Process." Korean Journal of Metals and Materials 52, no. 5 (May 5, 2014): 327–34. http://dx.doi.org/10.3365/kjmm.2014.52.5.327.

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He, Hao, Yi Min Li, and Jian Guang Zhang. "An Experimental Study of Metal Co-Injection Molding with Sequential Injection." Advanced Materials Research 97-101 (March 2010): 1116–19. http://dx.doi.org/10.4028/www.scientific.net/amr.97-101.1116.

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An experimental study of co-injection molding which involves sequential injection of dissimilar metal feedstocks into a mold has been carried out. The effect of skin temperature and injection velocity on the material distribution of co-injection molded plates has been studied. It was found that the molding temperature was important in controlling skin-core distribution, while injection velocity seemed to play no significant role. The experimental results were analyzed by taking account of the relative viscosity of the two melts. It was demonstrated that the differences in rheological properties of the metal feedstocks involved are the primary variable determining the phase distribution of the molded parts.

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Arakida, Yutaka. "Injection molding of metal and ceramics powder." Bulletin of the Japan Institute of Metals 26, no. 6 (1987): 473–80. http://dx.doi.org/10.2320/materia1962.26.473.

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24

German, Randall. "Progress in Titanium Metal Powder Injection Molding." Materials 6, no. 8 (August 20, 2013): 3641–62. http://dx.doi.org/10.3390/ma6083641.

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Loh, N. H., S. B. Tor, B. Y. Tay, Yoichi Murakoshi, and Ryutaro Maeda. "Micro Powder Injection Molding of Metal Microstructures." Materials Science Forum 426-432 (August 2003): 4289–94. http://dx.doi.org/10.4028/www.scientific.net/msf.426-432.4289.

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Scharvogel, Matthias. "Titanium Metal Injection Molding - A Commercial Overview." Key Engineering Materials 704 (August 2016): 107–12. http://dx.doi.org/10.4028/www.scientific.net/kem.704.107.

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Metal Injection Molding (MIM) of Titanium and its alloys has been the topic of many scientific research activities and presentations for many years. By now there are several companies that focus on applying the gained knowledge for producing Titanium MIM components in production quantities. This is only possible since Titanium powder in repeatable quality is available in production quantities and the specialized production equipment was developed over the recent years. Two ASTM standards for Titanium MIM implants have published and several Titanium MIM components have received approval around the globe, including approval by the Food and Drug Administration (FDA) for the United States. Based on this foundation, several large Medical Technology companies started developing next generation implants using MIM as the preferred production method in order to use the design advantages and / or reduce costs. The aerospace industry also started recognizing the advantages of Titanium MIM. There are several Titanium MIM parts that are already being used in commercial airplanes in production quantities. Additional applications in order to replace other materials, reduce costs or use the design advantages of MIM are currently being developed. The cost reduction related to Titanium MIM allows the usage of this great material in other industries like for sporting goods, outdoor equipment or luxury products. The Titanium MIM industry is slowly maturing and large companies started applying the great advantages into the product portfolio. It will be imperative that the relatively small Titanium MIM companies perform according to the high expectations of the large potential customers that would like to use the technology for future products.

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Hartwig, T., L. Lopes, P. Wendhausen, and N. Ünal. "Metal Injection Molding (MIM) of NdFeB Magnets." EPJ Web of Conferences 75 (2014): 04002. http://dx.doi.org/10.1051/epjconf/20147504002.

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Jin, Jie, Xin Bai, and Fang Yin Ning. "Flow of Finite Element Analysis of Metal Powder in Medal Injection Mold Runner." Advanced Materials Research 189-193 (February 2011): 2255–58. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.2255.

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Based on the continuum theory, combined with the characteristics of metal injection molding, constructs assumptions and control equation in the die filling process of MIM.With the FLOTRAN hydro-analysis module of ANSYS software, the melt’s velocity ,temperature and pressure fields during injection molding were simulated and compared for different sizes of circular section runners,and discussed the influences between different diameter runners and injection pressure on the flow behavior of melt. The simulation provided theoretical guidance for the design and selection of mold runner in the production.

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Sahli, Mohamed, Jean Claude Gelin, and Thierry Barrière. "Simulation and Modeling of Sintering Process for 316L Stainless Steel Metal Injection Molding Parts." Key Engineering Materials 651-653 (July 2015): 32–37. http://dx.doi.org/10.4028/www.scientific.net/kem.651-653.32.

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The metal injection molding (MIM) process allows the manufacturing of small and very complex metallic components. The metal injection molding processing combines the shaping capability of polymer injection molding with the large material variety of metals and ceramics. This paper discusses in detail the development of a numerical model capable of simulating micro-structural evolution and macroscopic deformation during sintering of complex powder compacts. A sintering model based on elastic–viscoplastic constitutive equations was proposed and the corresponding parameters such as bulk viscosity, shearing viscosity and sintering stress were identified from dilatometer experimental data. The constitutive model was then implemented into finite element software in order to perform the simulation of the sintering process. The numerical simulation methods being compared against results of the sintering experiments. The experimental data were obtained from sintering of 316L stainless steel powders.

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Huang, Wei Yun, Chang Da Chen, Yen Nien Chen, Wei Jen Shih, and Chih Han Chang. "Defect Detection of Metal Injection Modeling by Micro Computed Tomography." Applied Mechanics and Materials 229-231 (November 2012): 1445–48. http://dx.doi.org/10.4028/www.scientific.net/amm.229-231.1445.

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Metal injection molding (MIM) is a combination of metal powder and injection molding technology. The main advantage of this technology for material parts with small and complex shape is to manufacture cost-effective and high-volume products. The main processing steps include mixing, injection molding, debinding , sintering, and hot isostatic pressing (HIP) in order to reduce internal porosity of metals, then to improve mechanical properties. This study is based on non-destructive testing method to determine the possible defect inside the internal structure of the MIM parts. Three types of parts with and without HIP were evaluated investigated in this study. The micro computed tomography (Micro-CT) is used to scan these parts. Based the reconstructed section images from CT, the defects can be identified. It showed that with HIP the much of detects could be reduced. To conclude, Micro CT could be used to detect, in a non-destructive way, the internal detect within MIM parts can be found out in the micro-CT images, so that the manufacturing process could be modified to improve the quality of MIM parts.

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He, Hao, Yi Min Li, and Guang Yao Wang. "Effect of Molding Parameters on the Interface Morphology of Metal Co-Injection Molding." Advanced Materials Research 189-193 (February 2011): 2939–44. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.2939.

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In the present study, the effect of injection temperature, velocity and delay time on the interface morphology of the co-injection molded plates was studied. The results showed that the core penetration parallel to the flow direction becomes less as the skin injection velocity and temperature increases and delay time decreases. Among the parameters, temperature was the most significant in affecting the interface morphology, followed by delay time, while injection velocity seemed to play no significant role. The results were analyzed by taking account of rheological properties of the two feedstocks. Calculations and comparisons of viscosity ratios encountered in experiments were made. It was demonstrated the differences in the rheological properties of the metal feedstocks involved are key factors in determining the interface morphology of the molded parts.

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Czerwinski, Frank. "Theory and Technology of Semisolid Metal Molding." Solid State Phenomena 141-143 (July 2008): 9–16. http://dx.doi.org/10.4028/www.scientific.net/ssp.141-143.9.

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Fundamentals of semisolid metal molding, including the particulate feedstock, methods of its generation and features that make it useful for processing, are outlined. Melting characteristics of the feedstock under sole influence of heat are considered, covering a wide range of microstructural and microchemical factors, believed to be of importance at high temperatures. The generation of the thixotropic slurry within the injection molding system and its solidification behaviour are accompanied by detailed features of the molded structures and their correlation with properties of net-shape components. In addition to conventional techniques the novel processing concepts including near-liquidus molding, semisolid extrusion molding as well as the alloy and composite generation in a semisolid state are described. An update on commercialization progress is completed by a characterization of the modern equipment used for process implementation with broad references to metal die casting and plastics injection molding.

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Piotter, Volker, G. Finnah, B. Zeep, Robert Ruprecht, and Jürgen Haußelt. "Metal and Ceramic Micro Components Made by Powder Injection Molding." Materials Science Forum 534-536 (January 2007): 373–76. http://dx.doi.org/10.4028/www.scientific.net/msf.534-536.373.

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To overcome the lack of micro manufacturing processes suitable for medium and large scale production as well as to process high resistive materials a special variant of micro injection molding is currently under development: micro powder injection molding (MicroPIM), which already enables the manufacturing of finest detailed components with structure sizes down to a few ten micrometer. In order to expand the scope of application of MicroPIM, tests are being conducted with pure tungsten powders or tungsten alloy powders. As further improvement, micro twocomponent injection molding allows, for example, the fabrication of micro components consisting of two ceramic materials with different physical properties.

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Shin, Kwang Ho, Young Moo Heo, and Jong Deok Kim. "The Development of Small Size Double Side Metal Plate with Internal Structure Utilizing Metal Injection Molding Process." Applied Mechanics and Materials 365-366 (August 2013): 1132–35. http://dx.doi.org/10.4028/www.scientific.net/amm.365-366.1132.

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In this study, it is focused to make a double side metal plate with internal structure. The stainless steel powder (17-4PH 15F) was used in PIM process. PE(HDPE and LDPE) and PP were used to make the sacrificed insert with honeycomb structure using plastic injection molding process. And then these sacrificed insert parts were inserted at metal injection mold and metal injection molding process was carried out to build green part with rectangular shape. Subsequently, de-binding and sintering process were adopted. The dimensional contraction was occurred about 15.5% in width direction and about 16.2% in thickness direction.

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Bielzer, Raffael, and Walter Michaeli. "Metal injection molding: Freedom in design for sintered metal components." Advances in Polymer Technology 11, no. 2 (1991): 141–45. http://dx.doi.org/10.1002/adv.1991.060110207.

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Mustafa, N., Mohd Halim Irwan Ibrahim, Rosli Asmawi, Azriszul Mohd Amin, and S. R. Masrol. "Green Strength Optimization in Metal Injection Molding Applicable with a Taguchi Method L9 (3)⁴." Applied Mechanics and Materials 773-774 (July 2015): 115–17. http://dx.doi.org/10.4028/www.scientific.net/amm.773-774.115.

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Recently Metal injection molding is selected as a vital process in producing large amount of small part with complex geometry and intricate shape. This process is lead to solve cost effective issue in manufacturing fields. Feedstock composition behavior categorized as one of impact factor in determines the victories in metal injection molding process. Thus this paper is focused on optimizing the strength of green part by applied Taguchi Method L9 (34) as optimization tools during injection process. The composition of feedstock is 55% powder loading (PL) were injected by injection molding machine .Several injection parameter were optimized such as injection temperature (A), barrel temperature (B), injection pressure (C) and Speed (D) The results analyzed by using Signal to Noise Ratio (S/N ratio) terms. The highest green strength is A2, B2, C2, and D2

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Okubo, Kenji, Shigeo Tanaka, and Hiroshi Ito. "Molding technology for improvement on dimensional accuracy in micro metal injection molding." Microsystem Technologies 15, no. 6 (April 26, 2009): 887–92. http://dx.doi.org/10.1007/s00542-009-0812-7.

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Fu, Jun Yu. "The Viscosity Model of Ti-6Al-4V Feedstocks in Metal Powder Injection Molding." Applied Mechanics and Materials 275-277 (January 2013): 2161–65. http://dx.doi.org/10.4028/www.scientific.net/amm.275-277.2161.

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Power Law Model and Cross Model are widely used in Metal Powder Injection Molding computer simulation analysis. The feedstock viscosity data of Ti-6Al-4V is got through field tests, regression analysis is used to calculate the model parameters, which provides the theoretical basis for the application of computer simulation analysis in metal powder injection molding.

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Abdullah, Noorsyakirah, Mohd Afian Omar, Shamsul Baharin Jamaludin, Nurazilah Mohd Zainon, Norazlan Roslani, Bakar Meh, Mohd Nizam Abd Jalil, Mohd Bakri Mohd Hijazi, and Ahmad Zahid Omar. "Innovative Metal Injection Molding (MIM) Method for Producing CoCrMo Alloy Metallic Prosthesis for Orthopedic Applications." Advanced Materials Research 879 (January 2014): 102–6. http://dx.doi.org/10.4028/www.scientific.net/amr.879.102.

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Powder injection molding (PIM) is a powder metallurgy process currently used for the production of complicated and near net shape parts of high performance materials [. This technique basically combines the advantages of plastic injection molding and the versatility of the conventional powder metallurgy technique. The process overcomes the shape limitation of powder compaction, the cost of machining, the productivity limits of isostatic pressing and slip casting, and the defect and tolerance limitations of conventional casting [1, 2, . According to German and Bose [, the technology of metal injection molding (MIM) is more complicated than that of the plastic injection molding, which arises from the need to remove the binder and to densify and strengthen the part. The process composed of four sequential steps: mixing of the powder and organic binder, injection molding, debinding where all binders are removed and sintering [1, 2, 3, 4]. If it necessary, secondary operations such as heat treatments after sintering can be performed [1, 2, 3, 4, .

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Miura, Hideshi, Kohsuke Urakami, Shinji Ando, and Tadatoshi Honda. "Metal Injection Molding of Prealloyed 4600 Fine Powder." Journal of the Japan Society of Powder and Powder Metallurgy 40, no. 4 (1993): 388–92. http://dx.doi.org/10.2497/jjspm.40.388.

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Miura, Hideshi, Seiji Yasunaga, Naoto Ogasawara, Sinji Ando, and Tadatoshi Honda. "Metal Injection Molding Process of Martensitic Stainless Steels." Journal of the Japan Society of Powder and Powder Metallurgy 41, no. 9 (1994): 1071–74. http://dx.doi.org/10.2497/jjspm.41.1071.

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Tokui, Kunihito, Susumu Sakuragi, Takuya Sasaki, Yutaka Yamada, Mamoru Ishihara, Mamoru Nakayama, Izumi Kuji, and Mikio Nomura. "Properties of Sintered Kovar Using Metal Injection Molding." Journal of the Japan Society of Powder and Powder Metallurgy 41, no. 6 (1994): 671–75. http://dx.doi.org/10.2497/jjspm.41.671.

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KATOU, Kiyotaka, and Akihiro MATSUMOTO. "Application of Metal Injection Molding to Al Powder." Journal of the Japan Society of Powder and Powder Metallurgy 63, no. 7 (2016): 468–72. http://dx.doi.org/10.2497/jjspm.63.468.

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NISHIYABU, Kazuaki. "III : Recent Advance in Metal Powder Injection Molding." Journal of the Society of Materials Science, Japan 58, no. 1 (2009): 87–92. http://dx.doi.org/10.2472/jsms.58.87.

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MATSUZAKI, Satoru. "Fabrication of Microreactor by Metal Injection Molding (MIM)." Kobunshi 53, no. 5 (2004): 339. http://dx.doi.org/10.1295/kobunshi.53.339.

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Wang, Wei, Jiupeng Song, Binyou Yan, and Yang Yu. "Metal injection molding of tungsten and its alloys." Metal Powder Report 71, no. 6 (November 2016): 441–44. http://dx.doi.org/10.1016/j.mprp.2016.10.066.

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CHEN, Liang-jian, Ting LI, Yi-min LI, Hao HE, and You-hua HU. "Porous titanium implants fabricated by metal injection molding." Transactions of Nonferrous Metals Society of China 19, no. 5 (October 2009): 1174–79. http://dx.doi.org/10.1016/s1003-6326(08)60424-0.

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Piemme, Jobe C., and Joseph A. Grohowski. "Titanium Metal Injection Molding, a Qualified Manufacturing Process." Key Engineering Materials 704 (August 2016): 122–29. http://dx.doi.org/10.4028/www.scientific.net/kem.704.122.

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Metal injection molding (MIM) of titanium for implantable applications has been referred to as “the holy grail” of MIM. The challenges of forming a highly reactive, finely divided metal powder are well understood within the industry [1]. Titanium has the dual challenge of being both highly reactive and very sensitive to contamination. Over the years there has been tremendous activity in academia and industry regarding overcoming the challenges of titanium MIM [2]. The most relevant of those challenges is meeting the chemical and mechanical requirements of the Grade 5 (Ti-6Al-4V) alloy in a production environment. Praxis has qualified its titanium MIM process to meet the strict requirements of the medical industry. During this validation, the consistency of the process and product was evaluated at numerous points. This discussion focuses on input controls and testing the outputs of the process from both the perspective of interstitial content and mechanical properties. These characteristics cannot be non-destructively inspected and must be monitored by a statistical sampling plan to ensure quality during production. In order to develop a sampling plan that meets the quality requirements of the customer, it is necessary to determine the capabilities of the process. This article provides insight into the process validation of Praxis’ titanium MIM technology.

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TOKURA, Hitoshi, Kohmei MOROBAYASHI, Kyousuke Ai, Yoshihisa NORO, and Yasufumi ISHII. "Study on Agar Binder for Metal Injection Molding." Journal of the Japan Society for Precision Engineering 67, no. 2 (2001): 322–26. http://dx.doi.org/10.2493/jjspe.67.322.

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50

IWAI, TAKASHI, TATSUHIKO AIZAWA, and JUNJI KIHARA. "GRANULAR FLOW SIMULATION FOR METAL INJECTION MOLDING PROCESS." International Journal of Modern Physics B 07, no. 09n10 (April 20, 1993): 2047–56. http://dx.doi.org/10.1142/s0217979293002766.

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Abstract:

Metal Injection Molding treats the complex fluid which consists of thermoplastic tic polymer medium and dense metallic powder suspensions to improve flowability and formability. To understand its fundamental mechanical behavior, it is important to consider powder structures and mechanics precisely. For the analysis of this process, a new granular model is proposed, which is based on the Distinct. Element Method. Each element in this method is constituted by combining a metal powder with a binder (polymer) shell surrounding it. Both elasticity and viscosity for powder particles and binders are only considered in this mixture model as the constitutive relations. Several numerical results have demonstrated the effectiveness and validity of our developed granular modeling to deal with the various phenomena appearing in MIM process.

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Journal articles on the topic 'Metal injection molding'

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