17-4PH不锈钢小模数齿轮的MIM研制和分析  

Development and analysis of MIM 17-4PH stainless steel small module gear

作　　者：李杰 叶德全 邱耀弘 LI Jie;YE Dequan;QIU Yaohong(Vigor Precision Hardware and Plastic Products Co.,Ltd.,Dongguan 523000,China;You Need Enterprise Consulting Co.,Ltd.,Kunshan 215300,China)

机构地区：[1]东莞域嘉精密五金塑胶制品有限公司,广东东莞523000 [2]昆山耀德企业咨询有限公司,江苏昆山215300

出　　处：《粉末冶金工业》2024年第2期28-34,62,共8页Powder Metallurgy Industry

摘　　要：采用金属粉末注射成形(MIM)工艺制作几何形状复杂的小型金属零件,尤其是针对具有多数特征重复且相似的传动零件有一定的优势,例如常见的小模数齿轮。采用不锈钢17-4PH作为MIM技术的金属齿轮材料,这种材料的机械性能和防腐蚀能力优于传统机械加工齿轮的材料。实验按照不锈钢17-4PH的特性,以MIM工艺制作齿轮并对其进行不同条件的热处理(烧结后、H900、H900后+退火),经质量测试后呈现微小的变化,与传统热轧板材结果相近,MIM工艺可制作复杂齿轮并保持不锈钢17-4PH优良的尺寸精度,并能够提升机械性能。The use of metal powder injection molding(MIM)technology to produce small metal parts with complex geometric shapes,especially for transmission parts with similar and repeated features,such as small module gears,had certain advantages.As for the selection of metal gear materials,stainless steel 17-4PH could be used instead of MIM technology.The mechanical properties and corrosion resistance of this material are superior to those of traditional machined gears.In this paper,according to the characteristics of stainless steel 17-4PH,gears were made by MIM process and heat treated under different conditions(after sintering,H900,H900+annealing).After quality testing,there is a slight change,which is similar to the results of traditional hot rolled plates.MIM process could make complex gears,maintain the excellent dimensional accuracy of stainless steel 17-4PH,and improve mechanical properties.

关 键 词：金属粉末注射成形 齿轮 不锈钢17-4PH 热处理 H900 

分 类 号：TH132.41[机械工程—机械制造及自动化]