Environmentally Efficient 316L Stainless Steel Feedstocks for Powder Injection Molding

Hausnerová, Berenika; Novák, Martin

doi:10.3390/polym12061296

Cited by 8 publications

(6 citation statements)

References 36 publications

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“…% of HDPE [5][7] [8]. Based on previous journals [9]- [11], the feedstock was made of 60 vol.% powder and 40 vol.% binders. Using the articles as reference, the calculation was carried out to determine the mass of each component that can be put in the internal mixer for 400 g powder.…”

Section: Methodsmentioning

confidence: 99%

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Thermal and Flow Analysis of Stainless Steel and Alumina Feedstock Used for 2C-PIM Process

Morni¹,

Ismail²,

Nor³

et al. 2022

JMechE

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Within this research, rheological analysis and thermal properties of two component feedstock based on ceramic and metallic powders are carried out to understand their flow behaviour. Scanning electron microscopy (SEM), Differential Scanning Calorimeter (DSC), Thermogravimetric (TGA) and Capillary Rheometer were employed to set up optimum conditions for moulding, debinding and sintering process. DSC results defined the melting point for both backbone binder components were recorded at the same point, 55 oC. TGA results showed total weight loss of alumina and stainless steel feedstock was 17.4% and 6.43% respectively. Throughout rheological analysis, both feedstock exhibit pseudoplastic behaviour as viscosity reduce with the increase of shear rate, with shear sensitivity index less than 1. The activation energy, E for alumina and stainless steel feedstock had E values in the range of 101.93 - 2934.3 J/mol and 7132.3 - 10436 J/mol, respectively. For both alumina and stainless steel feedstock, high mouldability index occurred at the highest temperature with shear rate of 96 s-1 and 4070 s-1 which had the value of 47 x 103 and 24 x 103 respectively. The optimum injection temperature for stainless steel and alumina feedstock should be 190 °C and 230 °C respectively, since the feedstock exhibits the best characteristics for injection.

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Section: Methodsmentioning

confidence: 99%

“…Powder injection moulding (PIM) is a process which allow mass production with low cost, high performance and complex geometries without residual waste [1]- [2]. When two different materials are combined together, then the process specifically called two-component powder injection moulding (2C-PIM).…”

Section: Introductionmentioning

confidence: 99%

Thermal and Flow Analysis of Stainless Steel and Alumina Feedstock Used for 2C-PIM Process

Morni¹,

Ismail²,

Nor³

et al. 2022

JMechE

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“…35 Since the binder used in the feedstock is PMMA/ PEG, in which PEG is a water-soluble binder that can be removed with deionized Using deionized water is more environmentally friendly than other organic solvents. 36 The PEG component in the binder can be discharged out of the green part through dissolution and diffusion under the internal and external concentration differences. At the same time, the remaining resin PMMA helps to maintain the shape of the green part.…”

Section: Debinding and Microscopic Morphology Observation Of Green Partmentioning

confidence: 99%

Effect of surface modification of metal powders (by aluminum stearate) on the properties of metal injection molding feedstock

Ma,

Fang,

Zhou

et al. 2024

Powder Metallurgy

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Metal injection molding (MIM) is a net-forming technology for manufacturing miniature metal parts, which can improve the manufacturing accuracy of complex-shaped parts. In this study, aluminum stearate was used to modify the 17-4PH stainless steel powder, the binder was composed of (PMMA) and (PEG) with the volume ratio of 7:3. The effects of aluminum stearate surfactant amount on the feedstock viscosity, water debinding rate and thermal debinding shape were studied. The results showed that the coating of aluminum stearate breaks the agglomeration between the powders and decreases the viscosity of the feedstock. When the addition of aluminum stearate was 0.6wt% of the powder mass, the melt index, density and flexural modulus of the feedstock were 81.5 g/10 min, 5.44 g/cm3, and 1643Mpa, respectively, and the thermal debinding shape retention was the best of all debinded parts. However, too much aluminum stearate makes the feedstocks thicker and the green part weaker.

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“…Namun, serbuk baja dengan ukuran -31 µm lebih rentan terhadap pembentukan cacat selama tahap debinding dan sintering. [14]- [17] Kecacatan produk berkurang dengan meningkatkan laju pemanasan dan dengan meningkatkan gas laju aliran. Meskipun banyak penelitian telah dilakukan untuk mengevaluasi teknik paduan dan feedstock yang berbeda, namun sifat mekanik selain densitas produk sangat jarang diukur.…”

Section: Pendahuluanunclassified

“…Kontrol dan pemantauan parameter-parameter tersebut diperlukan untuk meminimalkan cacat produk. [17]…”

Section: Gambar 10 Test-piece Hasil Injection Dengan Bahan Feedstock ...unclassified

Penggunaan Material 316l Untuk Green-Part Test Piece Dengan Teknik Metal Injection Molding

Fauzi

Wiranegara

2023

JRM

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Material 316L is one type of iron with excellence corrosion resistant and was used in many industries. 316L is used as feed stock material for Green-part test piece which is a product of the Metal Injection Molding (MIM) process. The study showed, the manufacture of green part made from standard 316L material has been carried out. Green part is a product made by injection mold stage from MIM process. The stages of research carried out refer to the Metal Injection Molding process with the standard references that included three stages carried out which are the preparation of feedstock, mold design, and mold testing with the injection process by testing material and by the 316L feedstock. The purpose of this study is to analyze the green part test piece that was made with 316L material in MIM process with a specific measurement and the quality of the end product using tensile test. Results of this study indicate that the right parameters was achieved to produce shapes that match the targeted geometry of the 316L feed stock material. The tensile strength test show reading of 110Mpa but when compared with other studies, the value was still under standard.

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Environmentally Efficient 316L Stainless Steel Feedstocks for Powder Injection Molding

Cited by 8 publications

References 36 publications

Thermal and Flow Analysis of Stainless Steel and Alumina Feedstock Used for 2C-PIM Process

Thermal and Flow Analysis of Stainless Steel and Alumina Feedstock Used for 2C-PIM Process

Effect of surface modification of metal powders (by aluminum stearate) on the properties of metal injection molding feedstock

Penggunaan Material 316l Untuk Green-Part Test Piece Dengan Teknik Metal Injection Molding

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