| 摘要 |
The proposed indicating penetrant for liquid penetrant inspection contains water, organic dye, nonionic surface-active substance, and additionally, acidic additive. As the organic dye, crimson dye form a number of antipyrine compounds with the quinoid group is used. The composition of the penetrant, in percent by weight, is as follows: Organic dye 3 à5 % Surface-active 0,5 à 1,0 % substance Acidic additive In an amount that is sufficient for the pH indicator of the penetrant to be in the range from the weak-acid to the neutral one Water Up to 100 % The proposed penetrant provides a possibility to detect surface defects with dimensions down to 1 m and is distinctive by its enhanced safety level in using.
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