管材条状试样的屈服强度测试,由于受试样形状的制约,所以很难精确测定,本文就主要影响因素——夹持部分进行了分析。一、试样与夹头管材和平板试样示于图1。对于同一炉号和状态的试样采用平板夹头和弧形夹头(图2),进行夹持方法的对比试验。通过电测法,在试样上贴电阻应变片,进行“消拉测弯”来测定两种夹头给拉伸试验带来的偏差。 Due to the shape of the sample, it is very difficult to measure the yield strength of the strip specimen. In this paper, the main influencing factors - the grip part is analyzed. First, the sample and the chuck Pipe and plate samples shown in Figure 1. For the same heat number and state of the sample plate chuck and curved chuck (Figure 2), holding the method of comparative test. Through the electrical measurement method, the strain gauge is applied to the sample, and the “pull-pull bending” is performed to determine the deviation of the two types of chuck to the tensile test.