压射机构中压室与冲头间的摩擦性能试验研究  

Experiment of the Friction Characteristics between the Punch and Chamber of the Injection Mechanism

作　　者：赵佳欢[1] 游东东[1] 王翔[1] 

机构地区：[1]华南理工大学国家金属材料近净成形工程技术研究中心

出　　处：《特种铸造及有色合金》2015年第4期390-392,共3页Special Casting & Nonferrous Alloys

基　　金：NSFC-广东联合基金资助项目(U1034001);高等学校博士学科点专项科研基金资助项目(20110172120025)

摘　　要：在润滑数值模型的基础上,通过计算得出压室和冲头在不同间隙下的载荷,研究了在不同载荷和润滑剂下的摩擦特性。结果表明,在定载荷下,冲头润滑油具有较好的润滑性能,对磨副间的摩擦因数为0.16,且变化幅度较小。在美孚齿轮油作用下,随着载荷的增大,由于摩擦副间形成了良好的润滑油膜,摩擦因数从0.43降到0.07,而且试验值和数值模型值间的误差保持在10%之内,证明了试验方案的合理性。Based on the lubrication numerical model,the load between the chamber and punch in the different gap was calculated,and then the friction characteristics were investigated at different loads and lubricants.The results show that,at the given load,the punch lubricant exhibits a satisfied lubricating properties,and the frictional coefficient between the friction pair is 0.16 with the very low change range.By using Mobil gear oil,with the load increases,the friction coefficient is changed from 0.43to0.07 due to the good lubricant films formed between the friction pair,and error between the experimental and numerical model is within 10%,verifying the experimental rationality.

关 键 词：挤压铸造 压射机构 润滑 摩擦性能 

分 类 号：TG233.1[金属学及工艺—铸造] TG249.2