Dye penetrant inspection developing agent with good suspension performance and preparation method thereof

Abstract

The invention discloses a dye penetrant inspection developing agent with good suspension performance. The dye penetrant inspection developing agent is prepared from the following ingredients including65 to 90 parts of a mixed solvent, 9 to 19 parts of an adsorbing agent, 1 to 8 parts of a limiting agent, 0.1 to 3.5 parts of a wetting dispersant and 0.1 to 3.5 parts of a rheologic auxiliary agent.The prepared dye penetrant inspection developing agent has the advantages that a film formed by the developing agent is fine and uniform; the developing effect is good; and the pig skin of the adsorbing agent is avoided.

Description

technical field [0001] The invention relates to the technical field of nondestructive testing, in particular to a colored flaw detection imaging agent with good suspending properties and a preparation method thereof. Background technique [0002] Penetration testing is a non-destructive testing method based on the principle of capillary action to check surface opening defects. A sort of. [0003] According to the description in chapter 1.4.1 of AMS2644G "American Aerospace Material Specification AMS2644G Testing Materials - Penetrant", penetrant testing can be divided into two categories: fluorescent penetrant testing and coloring penetrant testing. The penetrant contains fluorescent dyes and can excite fluorescence under black light irradiation, which is fluorescent penetrant testing; the method of coloring defect images under white light or fluorescent lamps is coloring penetrant testing. Colored penetrant testing is widely used in the special equipment industry and the ...

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Problems solved by technology

[0005] In the prior art, white powders such as magnesium oxide, sodium carbonate, zinc oxide, titanium oxide, and talcum powder are usually used as adsorbents in solvent-based imaging agents for coloring flaw detection, and the particle size of the adsorbents is controlled by grinding with a grinder during the preparation process. , in order to achieve a good suspension of solvent-based developer, but there are the following problems: ① In order to control the particle size of the adsorbent powder to improve the suspension of the adsorbent in the developer, it often takes a lot of time to grind with a grinder, Affect the production progress ②The storage stability of the imaging agent is poor. The specific performance is that most of the solvent-based imaging agents in the prior art will add a wetting and dispersing agent. This functional additive can play a part in anti-sedimentation in the formula. However, the adsorbent will eventually accumulate at the bottom of the container over time, and it is often difficult to quickly disperse again; if the colored flaw detection imaging agent is an aerosol product, the adsorbent accumulated at the bottom of the aerosol cannot be shaken quickly, and it will may clog the valve when

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