Development of feedstock of tungsten-nickel-iron- polyformaldehyde for MIM technology

International Conference and Youth Scientific School on "Materials and Technologies of New Generations in Modern Materials Science"

Kostin, D.V.^1 ; Parkhomenko, A.V.^1 ; Amosov, A.P.^1 ; Samboruk, A.R.^1 ; Chemashkin, A.V.^2

Samara State Technical University, 244 Molodogvardeyskaya Street, Samara

443100, Russia^1

Federal Research and Production Center Production Association Start Named after M v Protsenko, IMira Prospekt, Zarechny, Penzenskaya oblast

442960, Russia^2

关键词: Complex shaped component;    Control samples;    Heavy alloy;    Melt flow rate;    Metal injection molding;    Optimal formulation;    Poly-formaldehyde;    Research and development;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/156/1/012033/pdf
DOI  :  10.1088/1757-899X/156/1/012033

来源: IOP

【 摘 要 】

The article presents the results of the research and development of technology and formulation of the feedstock from domestic metal powders and polymers to fabricate complexshaped components from heavy alloy of VNZh 7-3 brand (90 wt. % tungsten - 7% nickel - 3% iron) by Metal Injection Molding (MIM technology). The metal part of the feedstock is composed of powders of tungsten, nickel and iron, and the polymer part is composed of polyformaldehyde with the addition of low-density polyethylene and beeswax. The modes of mixing the components and the influence of the composition of the feedstock on the melt flow rate and the homogeneity of the feedstock were investigated. The optimal formulation of the feedstock was determined. Microstructure, density and hardness of control samples fabricated by MIM technology from the developed feedstock, correspond to, and in some respects are superior to the samples of VNZh 7-3 alloy fabricated by technology of traditional powder metallurgy.