Surface dyeing inspection method of sapphire crystal bar

Abstract

The invention discloses a surface dyeing inspection method of a sapphire crystal bar. The method comprises the following steps: cleaning a to-be-detected sapphire crystal bar, and drying the crystal bar for later use; spraying a red penetrating liquid on the dried sapphire crystal bar, wherein the penetration time is 3-4 minutes, after 5 minutes, repeating the operation, and ensuring the penetration time to be 10-15 minutes; after the permeation treatment is completed, cleaning the residual penetrating liquid on the sapphire crystal bar, and then wiping with dust-free cloth containing a washing liquid; and applying a white developing liquid to the sapphire crystal rod after penetration treatment, wherein after the white developing liquid is dried, an absorption and floating phenomenon appears in the permeating liquid permeating at a crack edge breaking position, bright red appears on the powder after drying of the white developing liquid at the edge breaking position, namely, the red-free part can be judged to be free of defects, and the size and depth of crack edge breakage can be judged according to the shape and the size of the red leaking part. The inspection method in the invention is simple, low in environmental requirement and high in efficiency.

Description

Technical field [0001] The invention belongs to the technical field of sapphire crystal rod inspection, and specifically relates to a method for surface dyeing inspection of sapphire crystal rods. Background technique [0002] The current sapphire crystal rod inspection is mainly in a closed dark room where the inspector applies a layer of wintergreen oil or octagonal oil on the surface of the crystal rod to be inspected, and then slowly rotates and irradiates the inside of the crystal rod with a high-power laser pointer, and finds cracks on the surface. Edge chipping, etc., this kind of operation method is inefficient, and it is easy to cause missed inspection of cracks and chipping. At the same time, wintergreen oil or star anise oil is a volatile irritating liquid that will cause certain damage to the human body, and long-term high-power laser pointer irradiation is also harmful The naked eye of the inspector can also cause certain injuries. There is an urgent need to develo...

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