Method for testing the anti-tarnish protection effect of high temperature resistant coating on stainless steel surface

Abstract

A method for testing the anti-tarnish protection effect of a high-temperature-resistant coating on a stainless steel surface, which is characterized in that it includes the following steps: 1) clamping the stainless steel plate to be tested; Use the light source and photoelectric detection probe to record the optical signal values ​​A1 and B1 on the upper and lower surfaces of the stainless steel plate to be tested; 3) Turn on the heating device and the temperature measuring probe, and when the preset heating temperature value T is reached, keep it for a time t; 4) Turn on the exhaust Heat dissipation system, when the temperature value drops to room temperature, turn on the light source and photoelectric detection probe, record the optical signal values ​​A2 and B2 on the upper and lower surfaces of the stainless steel plate to be tested; 5) calculate the Z value: Z=(B2 / B1) / (A2 / A1) and output. The invention has the advantages that: the test method can directly obtain quantitative test results to ensure the stability of the test results; the influence of color difference factors that may exist on different stainless steel surfaces before baking is considered, making the test results more accurate and reliable, and more Convincing.

Description

technical field [0001] The invention relates to a method for testing the anti-tarnish protection effect of a high-temperature-resistant coating on a stainless steel surface. Background technique [0002] Discoloration of stainless steel is a common phenomenon in the field of food processing. If stainless steel is used as the inner container material in the oven, when heated, the stainless steel inner container will be subjected to a temperature environment above 200 degrees for a long time, and yellowing will appear. [0003] The color formed on the surface of stainless steel is mainly related to several factors related to the oxidation resistance of stainless steel: 1. The composition of steel, chromium content is an important component that affects the oxidation resistance. The higher the chromium content, the better the anti-oxidation performance and the slower the discoloration; 2. The temperature, the higher the temperature, the darker the color; 3. The air and oxygen c...

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is to provide a method for testing the anti-tarnish protection effect of high-temperature-resistant coatings on stainless steel surfaces, which is simple and easy to operate and has high stability and reliability of test results.

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