ALLOY STEEL POWDER HAVING IMPROVED SINTERING PROPERTY FOR METAL INJECTION MOLDING AND SINTERED BODY

摘要

PROBLEM TO BE SOLVED: To provide the alloy steel powder for metal injection molding which improves the productivity of a sintering furnace by eliminating the deterioration of a product strength and the difficulty of the temperature management being problems of a conventional alloy for sintering, and to provide a sintered body using it.;SOLUTION: The alloy steel powder for metal injection molding consists of 0.1-1.8% C, 0.3-1.2% Si, 0.1-0.5% Mn, 11-18% Cr, 2-5% Nb by mass% and the balance Fe and unavoidable impurities and further contains at least one kind of Mo, V and W of ≤ 5.0% and the sintered body is made of this powder (wherein 0.1-1.7% C). As shown in Fig., the sintered body having a constant sintered density is obtained over the rang of 50°C of a sintering temperature, so that the sintering temperature management is facilitated and the productivity is improved.;COPYRIGHT: (C)2004,JPO&NCIPI