Bearing steel metallurgical defects:

Bearing steel metallurgical quality defects including smelting, casting, forging, and rolling process of metallurgical become useful may cause all of the flaws. According to the inspection method can generally be divided into macroscopic and microscopic defect defects two kinds big.

1. The macro defects

Including surface inspection can be found of hemp dot, crack, fold, ripping, scratch, scarred and slag and low power inspection can be found a lso pickling, subcutaneous air bubbles, white, burning, center loose, general loose and segregation, surface decarburization, etc. These are generally steel of the common defects. All kinds of bearing steel special standard the defects control has strict regulations.

2. Microscopic defect

 
The microscopic defect in steel include optical microscope amplification can be found under the inspection of all kinds of non-metallic inclusions in steel, carbon content segregation, carbide mesh and ribbon, annealing organization is not uniformity, etc. These are all affect the purity of steel and uniformity of the main defects. Strictly control the technical indexes and reduce as far as possible, it is all kinds of bearing steel technology requirements of the main content.



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