金属磨料欧文寿命试验机工作原理及试验方法  

Working Principle and Test Method of Ervin Life Testing Machine with Cast Steel Shot

作　　者：于晃[1,2] 刘越[2] 朱丽娟[1] 陈海京[2] 辛啓斌 于海双 

机构地区：[1]沈阳大学机械工程学院,辽宁沈阳110044 [2]东北大学材料与冶金学院,辽宁沈阳110819 [3]辽宁龙源实业集团有限公司,辽宁凌源122500

出　　处：《铸造技术》2014年第11期2756-2759,共4页Foundry Technology

基　　金：沈阳市科技计划项目(F13-316-18)

摘　　要：通过对欧文寿命试验机进行拆分,研究其工作原理,利用碰撞力学计算铸钢丸与投掷装置碰撞的初始速度为61.8 m/s。铸钢丸喷抛初速度的大小取决于接触点的位置,当接触点距离投掷装置中心越近时,铸钢丸的速度越小,反之越大。通过对铸钢丸进行试验,对比两种试验方法的适用性,结果发现:检测铸钢丸欧文寿命时一般使用100%替代法,而探寻最佳热处理参数时通常使用破损曲线法。Through splitting the experiment of Ervin life test machine to study working principle, the initial velocity of the steel shots and throwing device on the basis of collision mechanics was figured out. The results show that, at the outer edge of the throwing device, the initial velocity of the steel shots is 61.8m/s. The initial velocity of steel shots depends on the location of the contact point, the closer the distance between the center position, the smaller the velocity of the steel shots,the larger on the contrary. By testing of cast steel shot and comparing the applicability of the two test methods, the results show that, to study the Ervin life of the cast steel shot, shall use the 100% replacement method, while to study the optimal heat treatment parameters shall usually use damaged curve method.

关 键 词：铸钢丸 欧文寿命试验机 欧文寿命 速度 

分 类 号：TH87[机械工程—仪器科学与技术]