摘要
对几种高性能铁基粉末冶金摇臂镶块的成分、工艺、组织和性能等进行了对比分析和研究,确定了较优的化学成分(%)和工艺为 Ｆｅ－４．５Ｍｏ－４．９Ｗ－３．８Ｃｒ－１．６Ｖ－０．４Ｎｉ－０．５Ｃｕ,８００℃×１＋１３００℃×１．５ｈ复压复烧。其组织为回火Ｍ＋粒状Ｐ＋Ｋ＋残余Ａ,密度ρ≥７．３０ｇ/ｃｍ３、硬度≥５２ＨＲＣ。试制产品通过了台架试验和装车试验。此外,讨论了合金元素、烧结工艺、组织结构等对粉末冶金摇臂镶块性能的影响。
The composition, process, microstructure and properties of the iron-based PM inserted block of rockerarm were studied in this paper. The best composition (Fe-4.5Mo-6.0W-3.8Cr-1.6V-0.4Ni-0.5Cu, w%) and repress-ing-resintering process (800℃×1h+1300℃×1.5h) were obtained by experiment. Its microstructure is M+P+K+A,and density≥7.30g/cm3, hardness≥52HRC. The products can meet the engine performance requirement and havebeen applied in the mini-vehicle engine. The effects of the composition, process and microstructure on the proper-ties of the product were also discussed.
出处
《汽车工艺与材料》
2002年第2期17-20,共4页
Automobile Technology & Material
基金
重庆市科学技术委员会科技攻关项目(2001-6761)
