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High-temperature coloring seepage flaw detection agent and preparation method thereof

A technology of color penetration and flaw detection agent, applied in the direction of optical testing flaws/defects, etc., can solve the problems of evaporation, smoke and combustion, low composition stability, etc., to achieve the effect of improving detection efficiency and high detection accuracy

Inactive Publication Date: 2017-12-12
WUJIANG HYPERD NDT MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the currently commonly used penetrant flaw detectors can only detect workpieces with a surface temperature of -10°C to 70°C. If applied to a high-temperature surface, many components in the formula have low stability and are prone to bubbles, evaporation, and even smoking and burning. However, high-temperature workpieces are often encountered in existing inspections. The most common method used to be to stop the workpiece from working and cool it down to below 70°C for inspection.

Method used

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preparation example Construction

[0016] A preparation method of a high-temperature colored penetrating flaw detection agent, comprising the steps of:

[0017] (1) the polyoxyethylene fatty acid ester of described mass fraction, stryrone, tensio-active agent, selenium nitrogen red, propellant and the diisooctyl phthalate of partial amount are mixed, and beating forms slurry thing;

[0018] (2) Add the remaining di-isooctyl phthalate in step (1), place it in a heating reactor, stir at 400°C for 10 minutes, then stop heating, continue stirring until the temperature drops to 250°C and stop stirring;

[0019] (3) Filter the mixture in step (2) through a 200-mesh sieve, and then cool to room temperature to obtain a high-temperature colored penetrant flaw detector;

[0020] (4) Fill the penetrant flaw detection agent into an air tank for storage.

Embodiment 1

[0022] A preparation method of a high-temperature colored penetrating flaw detection agent, comprising the steps of:

[0023] (1) 6 parts of polyoxyethylene fatty acid esters, 25 parts of stryne, 5 parts by weight of surfactant, 1 part of selenium nitrogen red, 0.7~parts of propellant and 20 parts of di-isooctyl phthalate are mixed, and beating to form a slurry;

[0024] (2) Add 15 parts of di-isooctyl phthalate in step (1), place in a heating reactor, stir at 400°C for 10 minutes, then stop heating, continue stirring until the temperature drops to 250°C and stop stirring;

[0025] (3) Filter the mixture in step (2) through a 200-mesh sieve, and then cool to room temperature to obtain a high-temperature colored penetrant flaw detector;

[0026] (4) Fill the penetrant flaw detection agent into an air tank for storage.

Embodiment 2

[0028] A preparation method of a high-temperature colored penetrating flaw detection agent, comprising the steps of:

[0029] (1) 9 parts of polyoxyethylene fatty acid esters, 30 parts of stryne, 13 parts by weight of surfactant, 3 parts of selenium nitrogen red, 1.02 parts of propellant and 35 parts of di-isooctyl phthalate are mixed, and beating to form a slurry;

[0030] (2) Add 20 parts of di-isooctyl phthalate in step (1), place in a heating reactor, stir at 400°C for 10 minutes, then stop heating, continue stirring until the temperature drops to 250°C and stop stirring;

[0031] (3) Filter the mixture in step (2) through a 200-mesh sieve, and then cool to room temperature to obtain a high-temperature colored penetrant flaw detector;

[0032] (4) Fill the penetrant flaw detection agent into an air tank for storage.

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PUM

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Abstract

The invention discloses a high-temperature colored penetrating flaw detection agent, which is prepared from the following raw materials in parts by weight: 35-60 parts of diisooctyl phthalate, 6-12 parts of polyoxyethylene fatty acid ester, 25-25 parts of stryne 40 parts, 5-20 parts by weight of surfactant, 1-4 parts of selenium nitrogen red and 0.7-1.2 parts of propellant. The invention provides a high-temperature colored penetrant flaw detection agent, which can meet the penetration detection at a high temperature of 150° C., without the need for equipment to stop production for detection, and greatly improves the detection efficiency and accuracy.

Description

technical field [0001] The invention relates to a penetrant flaw detector, in particular to a high-temperature colored penetrant flaw detector and a preparation method thereof. Background technique [0002] Liquid penetrant testing method is an important method in modern nondestructive testing, and has become an important means to improve product quality, maintain equipment safety, and prevent industrial disasters. [0003] The basic principle of penetrant testing is to infiltrate the penetrant into the fine cracks, and then use the cleaning solution to clean the excess penetrant next to it, so as to ensure that only the penetrant exists in the fine cracks, and then display the crack position through the imaging solution. However, the currently commonly used penetrant flaw detectors can only detect workpieces with a surface temperature of -10°C to 70°C. If applied to a high-temperature surface, many components in the formula have low stability and are prone to bubbles, evapo...

Claims

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Application Information

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IPC IPC(8): G01N21/91
CPCG01N21/91
Inventor 徐阿江
Owner WUJIANG HYPERD NDT MATERIAL
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