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During the production and processing of stainless steel square pipe, in order to ensure its application quality, quenching and tempering treatment will be carried out. There are many purposes of quenching and tempering treatment, including in-situ stress removal, phosphorus removal, etc. phosphorus removal is to improve the specification precision of square steel pipe. Generally, we choose the high-pressure water descaling process. How can we choose this kind of method? Next, let's take a look at the advantages of high pressure water descaling process.
1. In the whole straightening process of stainless steel square pipe after quenching and tempering treatment, the square steel pipe will cause great sliding friction to the straightening roll and lead to roll shape damage. When there is oxide skin on the surface of the square steel pipe, it can accelerate the whole process of damage, and descaling can alleviate roll shape damage.
2. Nondestructive testing technology shall be carried out after quenching and tempering treatment of square steel pipe. If there is oxide skin on the surface, it will endanger the actual effect of flaw detection. When it is more serious, flaw detection will not be carried out, and the descaling process can prevent this situation.
3. Like the cold rolling process, the high pressure water descaling process can significantly improve the process performance of stainless steel square tubes.
4. After the square steel pipe is descaled and the oxide scale is removed, the cooling of the square steel pipe is symmetrical and the heat exchange is accelerated during heat treatment, which can reduce the heat treatment deformation of the square steel pipe and improve the cooling rate.
During the whole process of heat treatment, the temperature of stainless steel square pipe will rise, so its surface will cause different thickness of oxide skin. This kind of oxide skin with different thickness will endanger the actual application effect of square steel pipe. Therefore, it is very important to select the high-pressure water descaler process. We look forward to doing a good job in the phosphorus removal process in the specific implementation.
