用烧结硬化工艺生产汽车分动箱链轮  

Transfer case sprocket production through the sinter hardening process

作　　者：郭瑞金 J.Poirier F.Chagnon J.A.Danaher M.Gagné E.Ilia S.Krise 韩凤麟 

机构地区：[1]魁北克金属粉末有限公司 [2]Rio Tinto Iron&Titanium [3]Masco Tech Sintered Components

出　　处：《粉末冶金技术》2003年第6期327-333,共7页Powder Metallurgy Technology

摘　　要：烧结硬化工艺可利用通过烧结炉一次烧结生产强度与表观硬度高的粉末冶金零件。烧结硬化工艺省掉了烧结后的热处理 ,从而消除了与热处理相关的一些缺陷 ,诸如零件的扭曲变形、油污染及增大生产成本。为烧结硬化应用开发了低合金钢粉。这些低合金钢粉与可利用的装备有强化冷却能力的装置的烧结炉相结合 ,使烧结硬化对于因大小或形状难以淬火的零件特别有吸引力。MascoTechSinteredComponents最近开发的汽车分动箱链轮 ,就是成功应用低合金钢粉与烧结硬化工艺的一个范例。这篇论文阐述了粉末混合料配方与烧结参数对选择的可烧结硬化材料的力学性能的影响 ,和将链轮的主要生产线从传统的成形、烧结。Sinter hardening can produce powder metal parts with high strength and apparent hardness in a single pass through the sintering furnace This process eliminates the need for a post-sintering heat treatment with the inherent related drawbacks such as part distortion,oil contamination and added processing costs Low alloy steel powders have been developed for sinter hardening applications These materials,combined with the availability of sintering furnaces equipped with enhanced cooling capacity,make sinter hardening particularly attractive for parts that are difficult to quench because of their size or shape The transfer case sprocket,recently developed by MascoTech Sintered Components,is a good example of a successful application of the sinter hardening process using these low alloy powders This paper describes the influence of the mix formulation and the sintering parameters on mechanical properties of selected sinter hardenable materials and the approach taken to convert a major line of sprockets from a traditional mold,sinter,size and quench process to a cost effective mold and sinter harden process

关 键 词：汽车 分动箱 链轮 烧结硬化 生产工艺 低合金钢粉 

分 类 号：U463[机械工程—车辆工程] TF124.5[交通运输工程—载运工具运用工程]