第29卷第2期 2011年4月
圆海文苑
粉末冶金技术
Powder Metallurgy Technology
粉末冶金高速钢在汽车零件
气门座圈中的应用
Vol 29, No.2 Apr.2011
Rossi J. L. Salgado L. 1),Jesus Filho E. S. 1),Jesus E. R. B. 1)
Ambrozio Filho F.1),Santos J.C.2),Colosio M.A.2) 1) (Instituto de Pesquisas Energeticas e Nucleares-IPEN Powder Processing Centre-CPP,
P.0.Box 11049-CEP 05422-970-S8o Paulo,巴西）
2) (General Motors do Brasil Materials and Fastening Engineering, P.0.Box 197-CEP 09501-970-S8o Caetano do Sul-SP,巴西)
摘要：这篇文章介绍了关于高速钢用于气门座圈的情况。评定了两种材料：一种是研发的高速钢M3/2 粉、Fe粉及NbC的混合粉制造的材料；一种是为了比较，由Fe-Co合金制造的气门座圈。用SEM对研制的气门座围的显微组织进行了鉴定。对研发的高速钢的物理-力学性能将分别介绍密度、硬度、径向压溃强度及切削加工性。
关键词：粉末冶金：高速钢：汽车零件；气门座圈
P/M high-speed steel application in automotive components-
valveseatinserts
Rossi J.L. Salgado L."),Jesus Filho E.S."),Jesus E,R.B."),Ambrozio Filho F.")
Santos J. C, 2),Colosio M. A. 2)
1) ( Instituto de Pesquisas Energeticas e Nucleares-IPEN Powder Processing Centre-CPP,
P. 0. Box 11049-CEP 05422-970-Sao Paulo-Brazil)
2) ( General Motors do Brasil Materials and Fastening Engineering, P. 0. Box 197-CEP 09501-970-Sho Caetano do Sul-SP-Brazil)
Abstract: This work presents aspects related to high-speed steels for valve seat inserts application, Two types of reeieoeaasodsoanoaeeenraasa and another valve seat insert made of Fe-Co alloy, for comparison. The microstructure of the made on purpose valve seat insert was evaluated by scanning electron microscopy, The physical and mechanical properties of the high-speed
steels studied are presented in tems of densification,hardness ,radial mechanical strength and machining. Key words: powder metallurgy;high-speed steel;automotive components;valve seat inserts
根据商业与工业的观点，不得使用未弄清楚的冶金材料。涉及到成本与环境法规的制造与技术要求，可能会决定研究路线，及可能要对材料进行多次调整，以制备出理想的冶金材料。整个研究团队，往
往将材料或合金的研究目标缩小为以替代为目标。也就是鉴于Co价格高，要替代Co或由于生态学的缘故，要替代Pb(t-2)。鉴于这种情况，粉末冶金的应用在不断扩大。利用粉末冶金工艺生产的零件，