Have you found that some of the surface colors of stainless steel heat exchange tubes are darker and some are brighter? So why? There are many reasons for the different light and shade of the surface of stainless steel heat exchange tubes. The main points are summarized below:
1 raw material
1. Selection of raw materials
Stainless steel heat exchange tubes can produce good products with good raw materials, poor raw material selection will produce slightly inferior quality, good steel strip element content will be stable, and the produced stainless steel heat exchange tubes have high gloss; inferior stainless steel heat exchange tubes The element content of the steel strip of the tube is unstable, so the surface color of the produced stainless steel heat exchange tube is dull.
2. The material of the raw material
Common raw materials for stainless steel heat exchange tubes are 304 and 304L, which are two widely used austenitic stainless steel tubes. The hardness of the raw material is low, it is not easy to polish during polishing, and it is easy to appear orange peel phenomenon on the surface during deep drawing, which affects the gloss of the work. The stainless steel heat exchange tube with high material hardness has a better throwing effect, so the surface color is less bright.
The thickness of the stainless steel heat exchange tube is between 0.52-1.1mm, and the polishing effect is better. Thicker or thinner thickness will affect the polishing. The thin tube with high force will be deformed, and the thick tube with low force will be difficult to achieve.
3. Defects in raw materials
Surface defects of stainless steel heat exchange tube raw materials such as scratches, pits, scratches, sand holes, etc., the appearance of these defects will affect the production of stainless steel heat exchange tubes, making the surface gloss of the produced stainless steel heat exchange tubes dark.
two manufacturing
The polishing process of the stainless steel heat exchange tube is also a factor that directly affects its surface color.
When polishing stainless steel heat exchange tubes, there may be problems in the processing process due to external factors and other influences, so the gloss of the produced stainless steel heat exchange tubes is not high, and the surface is relatively dull.
This is the end of the introduction to the light and shade of the surface of stainless steel heat exchange tubes! Have you figured it out yet?