渗透检测时,渗透液的渗入量多少是影响检测灵敏度的最重要因素之一,通过渗入速度拐点研究,可以提高渗透液渗入量,提高检测灵敏度。零件表面被施加含有荧光染料或着色染料的渗透液后,在毛细作用下,经过一定时间的渗透,渗透液可以渗入表面开口缺陷中,经去除零件表面多余的渗透液和干燥后,再在零件表面施加显象剂。同样,在毛细管作用下,显象剂将吸引缺陷中的渗透液,在一定的黑光或白光光源下,缺陷处的渗透液痕迹被显示,发出黄绿色荧光或呈红色,从而探测出缺陷的形貌及分布状态。渗透液的渗入量多少是决定检测成功与否的最重要因素之一,如果渗入量不足,则回渗到零件表面的渗透液不足,不易穿透显象 Penetration test, the penetration of liquid infiltration is the number of how much is the most important factor affecting the sensitivity of detection, penetration infiltration point of infiltration can be increased infiltration penetration and increase detection sensitivity. After the surface of the part is subjected to the permeation liquid containing the fluorescent dye or the coloring dye, the permeation liquid can infiltrate into the surface opening defect after penetrating for a certain time under the action of the capillary, and after the excess permeating liquid on the surface of the part is removed and dried, Surface application of developer. Similarly, under capillary action, the developer will attract the permeate in the defect and, under certain black or white light sources, traces of permeate will be displayed at the defect, emitting yellow-green fluorescence or red, thereby detecting the shape of the defect Appearance and distribution status. The amount of permeate infiltration is to determine the success or failure of the detection of one of the most important factors, if the infiltration is insufficient, the permeate back to the surface of the part of the permeate is not enough to penetrate the image