一、概述 1、试块的作用在超声波探伤中,为了得到较为精确的探伤结果,超声波探伤仪和探头性能的好坏是很重要的。当然利用某些电子仪器可以测试其性能,这对于探伤仪制造厂是很便利的。但对于使用探伤仪的单位来说,却未必都具备这种测试手段。另外,在探伤过程中,复杂的测试方法对于现场也不实用,探伤人员希望用较简单的测试方法对探伤仪及探头的一些主要性能有所了解。 First, an overview 1, the role of test block In ultrasonic testing, in order to get more accurate test results, ultrasonic flaw detector and probe performance is good or bad is very important. Of course, the use of certain electronic instruments can test its performance, which is very convenient for the flaw detector manufacturer. But for flaw detector unit, but not necessarily have this test method. In addition, in the testing process, the complex test method is not practical for the scene, the inspectors hope to test some of the main properties of the flaw detector and probe with a simple test method.