During the heat processing process of steel, the surface of the steel parts will generate varying degrees of oxidation with the height of the heating temperature and the length of time, and forms different thickness of oxide. In order to improve the surface quality and size and accuracy of the steel pipe, during the hot rolling process of the steel pipe, high -pressure water de -scales are used to remove the oxide.
In the process of heat treatment heating, oxide skin will also be formed on the surface of the steel pipe, and the process of increasing high -pressure water de -scales has the following advantages:
(1) Like the rolling process, the high -pressure water removal process can significantly improve the surface quality of the steel pipe;
(2) After the steel pipe is removed from the scales to remove the oxidation skin, the steel pipe is uniformly cooled and the heat exchange is accelerated during quenching, which can reduce the quenching deformation and increase the cooling speed of the steel pipe;
(3) During the straight processing process of the steel pipe after the heat treatment, the steel pipe will produce a great friction to the straight roller and cause roller wear. When the surface of the steel pipe is oxide Can reduce roller wear;
(4) No destructive testing after the heat treatment of steel pipes. If the surface of the surface is oxide, it will affect the detection effect. In severe cases, the scales will not be performed, and the scales process can avoid this situation.
