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白点在某些结构钢、工具钢和轴承钢中是较为常见,并是一种危害性的缺陷。在我厂自用的冶金设备中也屡次发生由于钢材白点缺陷的原因,使传动轴、模座等另部件很快断裂;它对构件的疲劳强度影响敏感、最显著。作为一个超声检测人员有责任把有破坏性的白点缺陷检查出来,并把其分布及量的概况,提供给生产制造单位给予研究解决。由于钢材缺陷的多种性,白点分布形态及取向的多异性,在超声检测中给我们寻找,分辨和判断白点带来了一定的繁荣,迷惑和困难,但只要我们对钢材多种缺陷的特征,白点因材而异的不同分布及取向的规律摸透,充分自如运用超声固有时性和超声检测仪器参
White spots in some structural steel, tool steel and bearing steel is more common, and is a harmful flaw. Metallurgical equipment in our own use of the plant has also repeatedly occurred due to defects in the steel white point, so that the drive shaft, mold base and other parts quickly broken; it is sensitive to the fatigue strength of the component, the most significant. As an ultrasonic testing personnel have the responsibility to check out the destructive white point defects, and its distribution and quantity of the overview, to the manufacturing units to give research to solve. Due to the variety of steel defects, the distribution of white spots and the orientation of the heterogenous sex, in the ultrasonic testing to us to find, identify and determine the white point has brought some prosperity, confusion and difficulties, but as long as we a variety of defects in steel The characteristics of white spots vary according to the different distribution and orientation of the law thoroughly, the full use of ultrasound inherent timeliness and ultrasonic testing equipment parameters