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Microscopic defects and microscopic defects of bearing steel
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1. Microscopic defects include the appearance of the appearance, the cracks, cracks, cracks, scratches, scratches, crusting and slag inclusions as well as low-pickling and inspection. The shrinkage holes, subcutaneous bubbles, white spots, over-burning, and intermediate looseness can be found. Usually loose and segregated, surface decarburization, etc. These are common shortcomings of steel. All kinds of special specifications for bearing steel have strict rules for handling these shortcomings.
2. The microscopic shortcomings of the microscopic defects include the expansion of the optical microscope to detect various non-metallic inclusions in the steel, carbon segregation, carbide network and ribbon, annealing unevenness, etc. These are all affecting steel. The primary shortcoming of pureness and uniformity. Strictly control these skill indicators and make them as much as possible; it is the primary content of all kinds of bearing steel skill needs.
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