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由于磁粉探伤用标准试片是用来检查探伤设备、磁粉、磁悬液的综合性能,以及操作方法是否恰当;还用于考察工件表面的磁场分布特征,确定被检查工件的磁化电流值,以及直接考察试验条件是否适当,故磁粉探伤用标准试片本身的质量对探伤结果的可靠性和正确性影响很大。本标准就是针对磁粉探伤用A型、C型、D型三种标准试片的产品质量评定而制定的。
As the magnetic particle testing with the standard test strip is used to check the comprehensive performance of testing equipment, magnetic powder, magnetic suspension and the operation method is appropriate; also used to examine the magnetic field distribution characteristics of the workpiece surface to determine the workpiece magnetization current value, and Direct examination of the test conditions are appropriate, so the quality of the standard magnetic particle testing with the test results of the reliability and accuracy of a great influence. This standard is for magnetic particle inspection with A type, C type, D-type three standard test piece product quality assessment and development.