scholarly journals Numerical Simulation of Debinding Process in Metal Injection Molding

2014 ◽  
Vol 4 (6) ◽  
pp. 421-425
Author(s):  
Lih-Wu Hourng ◽  
Yau Si Lin
Keyword(s):  
Numerical Simulation ◽  
Injection Molding ◽  
Metal Injection Molding ◽  
Debinding Process

Characteristics of STS630 Based Metal Injection Molding Products on Powder Size, Sintering and Heat Treatment Conditions

2013 ◽  
Vol 372 ◽  
pp. 398-401
Author(s):  
Hee Jin Jeong ◽  
Hwan Kyun Yeo ◽  
Dae Yeol Bae ◽  
Je Hyun Kim ◽  
Dong Woo Kim ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Injection Molding ◽  
Sintering Temperature ◽  
Processing Condition ◽  
Metal Injection Molding ◽  
Powder Size ◽  
Optimal Processing ◽  
Treatment Conditions ◽  
Debinding Process

This study proposes the research method to examine through experiment the mechanical properties of final products based on the size and sintering temperature of powder particle during STS630 powder based metal injection molding and heat treatment processing condition after the sintering. The feedstock for the injection was manufactured based on STS630 powder with the diameter of 7.0±1.0μm and 8.0±1.0μm and the sintering was carried at 2 temperature conditions of 1300°C and 1355°C after the injection and debinding process. Heat treatment conditions of sample after the sintering were divided into 2 types thus final samples of total 8 cases were manufactured. Then, the 5 types of mechanical properties test were conducted. Optimal processing conditions for MIM molding and heat treatment of STS630 powder could be established based on it.

Thermal Debinding Process of SS 17-4 PH in Metal Injection Molding Process with Variation of Heating Rates, Temperatures, and Holding Times

2017 ◽  
Vol 266 ◽  
pp. 238-244 ◽  
Author(s):  
Sugeng Supriadi ◽  
Bambang Suharno ◽  
Rizki Hidayatullah ◽  
Gerra Maulana ◽  
Eung Ryul Baek
Keyword(s):  
Injection Molding ◽  
Heating Rate ◽  
Crack Formation ◽  
Holding Time ◽  
Effect Of Temperature ◽  
Metal Injection Molding ◽  
Injection Molding Process ◽  
Mass Reduction ◽  
Thermal Debinding ◽  
Debinding Process

Generally, metal injection molding (MIM) method utilizes SS 17-4 PH as material for application of orthodontic bracket. One of the process of MIM is thermal debinding, which binder is eliminated by thermal energy. In this study, thermal debinding process is conducted with variation of temperature, i.e. 480, 510, and 540°C, holding time, i.e. 0.5, 1 and 2 hours, heating rate, i.e. 0.5, 1, 1.5, and 2°C/min.The effect of temperature shows that the increased temperature will result in the mass reduction percentage due to formation of oxide on the sample, which will be proven through TGA testing. The highest mass reduction was 6.4137 wt% which was obtained at 480°C. For the variation of holding time, the longer the holding time will result in increased mass reduction and the highest mas reduction was 6.255 wt% which was obtained during 2 hours of holding time. For the heating rate, the slower the heating rate will result in increased mass reduction and decreased the presence of crack formation. The best variable was obtained at heating rate of 0.5°C/min, which resulted mass reduction of 6.2488 wt% and less crack formation.

Debinding Process of Fe–6Ni–4Cu Compact Fabricated by Metal Injection Molding

2000 ◽  
Vol 39 (Part 1, No. 2A) ◽  
pp. 616-621 ◽  
Author(s):  
Jenn-Shing Wang ◽  
Shih-Pin Lin ◽  
Min-Hsiung Hon ◽  
Moo-Chin Wang
Keyword(s):  
Injection Molding ◽  
Metal Injection Molding ◽  
Debinding Process

Innovations in Micro Metal Injection Molding Process by Lost Form Technology

2007 ◽  
Vol 534-536 ◽  
pp. 369-372 ◽  
Author(s):  
Kazuaki Nishiyabu ◽  
Yasuhiro Kanoko ◽  
Shigeo Tanaka
Keyword(s):  
Injection Molding ◽  
Mold Insert ◽  
Production Method ◽  
Metal Injection Molding ◽  
Injection Molding Process ◽  
Stainless Steel 316L ◽  
Molding Process ◽  
Debinding Process ◽  
Micro Structures ◽  
Plastic Mold

The production method of micro sacrificial plastic mold insert metal injection molding, namely μ-SPiMIM process has been proposed to solve specific problems involving the miniaturization of MIM. The sacrificial plastic mold (SP-mold) with fine structures was prepared by injection-molding polymethylmethacrylate (PMMA) into Ni-electroform, which is a typical LIGA (Lithographie-Galvanoformung-Abformung) process. Stainless steel 316L feedstock was injectionmolded into the SP-mold which had micro structures with multi-pillars. The green compact was demolded as one component with the SP-mold, which was decomposed along with binder constituent of feedstock in debinding process. This study focused on the effects of metal particle size and processing conditions on the shrinkage, transcription and surface roughness of sintered parts, which were evaluated by SEM (Scanning Electron Microscope) observation.

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