Process for surface inspection of precise metal parts through penetration method

Abstract

The invention discloses a process for surface inspection of precise metal parts through a penetration method. The process comprises the following steps: (1) cleaning; (2) applying penetrating agents,preparing two penetrating agents, putting the metal parts in an environment of 60-70 DEG C, standing for 1-3 minutes, coating defected parts on the surfaces of the metal parts with the first penetrating agent, putting the metal parts in an environment of 15-20 DEG C, standing for 8-10 minutes, and spraying the second penetrating agent to the defected parts on the surfaces of the metal parts, wherein the first penetrating agent contains diisooctyl phthalate, strychnine, silicon carbide, an activating agent and phthalate, and the second penetrating agent contains bisazo red, ethanol, glycol ether and rose red; (3) cleaning the redundant penetrating agent; (4) carrying out development; and (5) examining. The process disclosed by the invention has the beneficial effects that the steps are simple, the operation is convenient and rapid, a result is visual, the observation is convenient, a professional inspection worker is not required, and the operation can be carried out by a common procedure worker after simple training.

Description

Technical field [0001] The invention belongs to the technical field of flaw detection, and particularly relates to a surface flaw detection process of precision metal parts using an infiltration method. Background technique [0002] In the manufacturing industry, defects such as small cracks on the surface of raw materials and parts that are difficult to see with the naked eye often make product quality unable to meet customer requirements. To detect these surface defects, fluorescent penetrant detection technology is often used in the industry. Its principle is to infiltrate the fluorescent penetrant into the cracks on the surface of the workpiece to be inspected through a certain method, clean and dry to remove the penetrant and moisture on the surface of the workpiece to be inspected, and then apply the developer on the surface of the workpiece to be inspected, under capillary action , The penetrant in the crack is absorbed to the surface of the workpiece to be inspected, and...

AI Technical Summary

Problems solved by technology

There is still some experience and technicality in the adjustment of the existing penetrant flaw detection process in terms of process steps and equipment parameters. For new operators, a lot of practice is needed to master the operation skills and produce better quality products. The product