The Influence of Sintering Atmosphere for Metal Injection Moulding M2 High Speed Steel

Abstract:

This paper reports on the compatibility of waste rubber as binder for M2 High Speed Steel injection moulding. The feedstock was prepared at a powder loading of 65 vol.% using 22μm M2 High Speed Steel powder and the binders consisting of 55wt.% paraffin wax, 21wt.% polyethylene, 14wt.% waste rubber and 10wt.% stearic acid. The specimens were then sintered in vacuum and 95%N₂/5%H₂ atmosphere. The sintering in vacuum atmosphere occurred within a temperature range from1200°C to 1260°C, whilst the 95%N₂/5%H₂ atmosphere was carried out within a temperature range from 1220°C to 1300°C. The effects of the sintering atmosphere and temperature on the physical properties, mechanical properties and microstructure were investigated.

• Periodical: Advanced Materials Research (Volume 879)
• Pages: 169-174
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.879.169
• Online since: January 2014
• Authors: R. Sauti, N.A. Wahab, M.A. Omar, I.N. Ahmad
• Keywords: M2 High Speed Steel, Metal Injection Molding (MIM), Sintering Temperature, Waste Rubber Based Binder

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