Gleeble-3500热/力模拟压缩试验若干问题的分析与处理

Problems Analysis and Solution of Compression Test with Hydraulic Wedge for Gleeble-3500 Thermal Analogue

Gleeble-3500型热/力模拟试验机在更换液压楔进行压缩试验时易出现应变速率、应变量达不到程序设定的要求以及试样变形不均匀、鼓形等问题,对此进行了分析和处理。结果表明:通过采用调整试样夹持力、充入氩气保护气体、修改变形程序、保证砧子和试样之间的良好润滑等改进措施可以解决以上问题。

There have been some problems of Gleeble--3500 thermal analogue when replacing the hydraulic wedge for compression test including that the strain rate and strain capacity could not meet the requirement of set-up procedure, and the specimen appeared inhomogeneous deformation and drum sharp. The above problems were analyzed and handled. The results showed that the matters can be improved by adjust the force between the jaws and the specimen, fill the argon protect air in the work cavity, modify the deformation procedure and keep suitable lubricant at the interface between the anvils and the specimen.