Thermal tempering color is a common problem during Stainless steel surface treatment. It is mainly due to the oxidation reaction on the surface of stainless steel during high-temperature treatment, forming a thin oxide layer, causing the surface color to change. To effectively prevent and treat heat temper coloration, here are some suggestions:
Control the heating temperature: First of all, the heating temperature must be accurately controlled to avoid excessive oxidation of the stainless steel surface caused by excessive temperature. During the heating process, equipment such as a thermometer should be used for real-time monitoring to ensure that the temperature is controlled within an appropriate range.
Optimize heating methods: Different heating methods will have different effects on the surface of stainless steel. For example, rapid heating and rapid cooling can reduce the residence time of stainless steel at high temperatures, thereby reducing the generation of thermal tempering color.
Choose high-quality stainless steel materials: When choosing stainless steel materials, you should choose high-quality materials with low carbon content and high chromium content. This type of material is more stable at high temperatures and less prone to oxidation reactions.
Pretreatment before surface treatment: Before Stainless steel surface treatment, the surface should be pretreated, such as cleaning, oil removal, rust removal, etc. This ensures that the stainless steel surface is clean and free of impurities, which facilitates subsequent surface treatment.
Use appropriate surface treatment methods: For stainless steel that has developed thermal tempering color, appropriate surface treatment methods can be used to repair it. For example, chemical methods can be used to remove the oxide layer on the surface and restore the original color and luster of stainless steel. Sandblasting, polishing and other methods can also be used to repair and beautify the surface.
Strengthen quality monitoring: During the Stainless steel surface treatment process, quality monitoring should be strengthened and each process should be strictly controlled. Once problems such as heat temper color are discovered, timely measures should be taken to deal with them to ensure product quality.
In short, preventing and treating thermal tempering discoloration on stainless steel surfaces requires comprehensive consideration of multiple factors, including heating temperature, heating method, material selection, pretreatment, surface treatment methods, and quality monitoring. By taking appropriate measures, the generation of thermal tempering color can be effectively reduced and the quality and effect of Stainless steel surface treatment can be improved.
