How does the crack on the surface of s420 pickling steel equivalent cause

No matter what kind of wear-resistant steel plate, it is composed of two parts, namely s420 pickling steel equivalent, carbon steel plate and alloy wear-resistant layer. Under normal conditions, the thickness of the alloy wear-resistant layer of wear-resi

No matter what kind of wear-resistant steel plate, it is composed of two parts, namely s420 pickling steel equivalent, carbon steel plate and alloy wear-resistant layer. Under normal conditions, the thickness of the alloy wear-resistant layer of wear-resistant steel plate is 1/3-1/2 of the total thickness. When working, the matrix provides comprehensive properties such as strength, toughness and plasticity to resist external forces, and the alloy wear-resistant layer provides wear-resistant properties meeting the requirements of specified working conditions.

Under the action of the roller and the plug, a cavity is formed in the blank, which is called the blank. Then send it to the automatic tube rolling machine to continue rolling. Finally, the wall thickness of the whole machine is equalized and the diameter is calibrated by the sizing machine to meet the specification requirements. It is an advanced method to produce s420 pickling steel equivalent, hot-rolled seamless steel tube by continuous rolling mill.

Tempering the important s420 pickling steel equivalent welding structure often use high temperature tempering to remove residual weld stress. Classification: high temperature tempering above 400 ℃, medium temperature tempering 250 ~ 400 ℃, low temperature tempering 150 ~ 250 ℃, Quenching +Tempering is improve s420 pickling steel equivalent strength, plasticity and toughness.

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