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一、前言液体渗透探伤法,是最早的非破坏性检验方法之一,它已有五十多年的历史。30年代以后,由于机械工业尤其是航空工业的迅速发展,以及非磁性材料的激增,促使这一方法发展为染料和荧光渗透法[1,2]。1941年荧光渗透法和1950年后乳化渗透体系的出现,大大地提高了探伤灵敏度[3]。目前,液体渗透法的渗透体系及操作方法,是根据被检查物的材质、规格、形状以及缺陷种类和大小来选择的[3、
I. Introduction Liquid penetrant flaw detection method is one of the earliest nondestructive testing methods, it has more than 50 years of history. After the 1930s, due to the rapid development of the machinery industry, especially the aviation industry, and the surge of non-magnetic materials, this method was developed into dye and fluorescence penetration method [1,2]. Fluorescent permeation in 1941 and emulsification infiltration system after 1950, greatly increased the detection sensitivity [3]. At present, the liquid infiltration penetration system and method of operation, is based on the inspection of the material, size, shape and type and size of defects to choose [3,