Thermal debinding processing of 316L stainless steel powder injection molding compacts

2003 ◽  
Vol 137 (1-3) ◽  
pp. 65-69 ◽  
Author(s):  
Yimin Li ◽  
Shaojun Liu ◽  
Xuanhui Qu ◽  
Baiyun Huang
Keyword(s):  
Stainless Steel ◽  
Injection Molding ◽  
316L Stainless Steel ◽  
Steel Powder ◽  
Powder Injection Molding ◽  
Stainless Steel Powder ◽  
Powder Injection ◽  
Thermal Debinding

scholarly journals Environmentally Efficient 316L Stainless Steel Feedstocks for Powder Injection Molding

Polymers ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1296
Author(s):  
Berenika Hausnerova ◽  
Martin Novak
Keyword(s):  
Stainless Steel ◽  
Injection Molding ◽  
Mass Production ◽  
316L Stainless Steel ◽  
Powder Injection Molding ◽  
Powder Injection ◽  
The Novel ◽  
Efficiency Enhancement ◽  
Optimum Conditions ◽  
Set Up

In this study, environmentally convenient highly metal powder filled feedstocks intended for powder injection molding is presented. The composition of 60 vol % 316L stainless steel gas atomized powder feedstocks containing semicrystalline waxes: acrawax or carnauba wax and paraffin wax, combined with polyethylene glycol and modifier, was optimized to provide defect-free parts. Rheological as well as thermogravimetric analyses supported with scanning electron microscopy and metallography were employed to set up optimum conditions for molding, debinding and sintering. The performance of the novel feedstock was compared with currently available polyolefines-based materials, and results showed an efficiency enhancement due to the substantially lower (about 100 °C) mixing and molding temperatures as well as a reduction of debinding and sintering times at the simultaneous achievement of better mechanical properties in terms of elongation and tensile strength, in comparison to the mass production feedstock.

Corrosion and Cytotoxicity Evaluation of AISI 316L Stainless Steel Produced by Powder Injection Molding (PIM) Technology

2005 ◽  
Vol 498-499 ◽  
pp. 86-92 ◽  
Author(s):  
Isolda Costa ◽  
Sizue Ota Rogero ◽  
Olandir Vercino Correa ◽  
Clarice Terui Kunioshi ◽  
Mitiko Saiki
Keyword(s):  
Stainless Steel ◽  
Injection Molding ◽  
316L Stainless Steel ◽  
Electrochemical Techniques ◽  
Powder Injection Molding ◽  
Powder Injection ◽  
Cytotoxicity Test ◽  
Aisi 316L ◽  
Aisi 316L Stainless Steel

This study investigates the in vitro corrosion and cytotoxicity response of AISI 316L stainless steel produced by powder injection molding (PIM) technology in a solution that simulates physiological fluids (MEM) by electrochemical techniques and neutral red uptake cytotoxicity assay. The results were compared with those of AISI 316L produced by conventional metallurgy. Both steels showed high corrosion resistance and no toxic effect in the cytotoxicity test. The corrosion products were analyzed by instrumental neutron activation analysis (INAA). The surfaces of the alloys were evaluated before and after corrosion test by scanning electron microscopy and a passive behaviour was indicated supporting the results from other techniques.

Mixing and characterisation of 316L stainless steel feedstock for micro powder injection molding

2005 ◽  
Vol 54 (3) ◽  
pp. 230-238 ◽  
Author(s):  
L. Liu ◽  
N.H. Loh ◽  
B.Y. Tay ◽  
S.B. Tor ◽  
Y. Murakoshi ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Injection Molding ◽  
316L Stainless Steel ◽  
Powder Injection Molding ◽  
Powder Injection

Feedstock Characterization for Micro Powder Injection Molding (μPIM)

2011 ◽  
Vol 201-203 ◽  
pp. 1721-1724 ◽  
Author(s):  
Haw Pei Li ◽  
Norhamidi Muhamad
Keyword(s):  
Stainless Steel ◽  
Shear Rate ◽  
Injection Molding ◽  
Flow Characteristics ◽  
Steel Powder ◽  
Powder Injection Molding ◽  
Powder Injection ◽  
Capillary Rheometer ◽  
Rotor Speed ◽  
Acetate Butyrate

In this experimental work, Micro Powder Injection Molding (μPIM) was carried out with stainless steel feedstock. The feedstocks with powder loading between 60 v/o to 62 v/o were prepared with 5μm stainless steel powder, Polyethelena Glycol (PEG), Polymethyl Methacrilate (PMMA) and Cellulose Acetate Butyrate (CAB). The main objective was to determine the homogeneity and flow characteristics of the mixture. Capillary rheometer method was performed to define the sensitivity of viscosity to shear rate and temperature for the mixture. The rheological properties were investigated and analyzed through relevant equations. Results show that the flow ability and characteristics of μPIM feedstocks highly depend on the mixture composition. Feedstock at 61 v/o exhibited the most suitable characteristics when mixed at temperature of 130°C with a rotor speed of 30rpm.

Tribological behavior of 316L stainless steel fabricated by micro powder injection molding

Wear ◽  
2010 ◽  
Vol 268 (7-8) ◽  
pp. 1013-1019 ◽  
Author(s):  
Junhu Meng ◽  
Ngiap Hiang Loh ◽  
Bee Yen Tay ◽  
Gang Fu ◽  
Shu Beng Tor
Keyword(s):  
Stainless Steel ◽  
Injection Molding ◽  
316L Stainless Steel ◽  
Tribological Behavior ◽  
Powder Injection Molding ◽  
Powder Injection

Determination of Optimal Microminiature Powder Injection Molding Parameters by Taguchi Approach

2011 ◽  
Vol 189-193 ◽  
pp. 2997-3000
Author(s):  
Haw Pei Li ◽  
Norhamidi Muhamad
Keyword(s):  
Stainless Steel ◽  
Injection Molding ◽  
High Performance ◽  
Injection Pressure ◽  
Steel Powder ◽  
Powder Injection Molding ◽  
Powder Injection ◽  
Injection Molding Process ◽  
Taguchi Approach ◽  
Molding Process

The global manufacturing trend is now focusing towards miniaturization. Microminiature Powder Injection Molding (μPIM) is a viable technology to fabricate complex and high performance miniaturized components. The μPIM technique was used to produce the near-net shape micro components in this study. Fine stainless steel powder with particle size of 5μm was mixed with a ternary water-based binder system. Micro dumbbells with the largest dimension of 9mm were replicated. In order to obtain successful and well molded micro dumbbells, the Design of Experiments (DOE) technique was applied to investigate the optimal parameters in injection molding process. Injection parameters such as injection pressure (A), injection temperature (B), powder loading (C), mold temperature (D), injection time (E) and holding time (F) were optimized by using stainless steel feedstocks. Taguchi approach is chosen and the results were evaluated with signal-to-noise (SN) ratio and analysis of variance (ANOVA). The results show that the feedstocks could be replicated by using μPIM method with the application of Taguchi approach.

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