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液体渗透探伤法是表面缺陷的非破坏性检验方法之一,早期采用煤油渗浸吹砂法来检验铸件的缺陷。1941年以后,有人提出在渗透液中加入萤光染料的方法才大大地提高了萤光渗透法的灵敏度。后又逐步发展了着色渗透法,在国外有关这方面的资料及配方各自保密。随着我国工业的飞跃发展,特种性能材料品种日益增多,特别是机件在野外检修的场合下,磁粉法和萤光法不能满足要求。为此我所于1962年开始从事着
Liquid penetrant testing is one of the non-destructive testing methods for surface defects. In the early stage, kerosene seepage infiltrating sandblasting was used to test the defects of castings. After 1941, it was suggested that the method of adding fluorescent dye to the permeate would greatly increase the sensitivity of the fluorescent penetration method. And then gradually developed a coloring infiltration method, in foreign countries in this regard the information and formulations are confidential. With the rapid development of our country’s industry, the varieties of special performance materials are increasing day by day. Especially when the parts are under field maintenance, the magnetic powder method and the fluorescent method can not meet the requirements. To this end, I started in 1962