Smelting non-standard bearing steel is there any requirement

Source: non-standard bearing steel smelting requirements bearing | last updated: - 2020 10 - 27 smelting non-standard bearing steel is there any requirement for non-standard bearing steel, surface defects including crack, flash, burr, scarring, scale, etc. Internal defects including shrinkage cavity, bubbles, small white dots, severe osteoporosis and shrinkage cavity, etc. This defect in production and processing of non-standard bearing, non-standard bearing properties and service life have very big harm, in the non-standard bearing raw material specification expressly provides that don't allow appear this kind of defect. Provisions in the non-standard bearing steel in which the inhomogeneity of cementite, if serious cementite distribute in the inhomogeneity, could easily lead to institutions in the process of heat treatment and intensity inhomogeneity, the nonuniformity of the steel body contact fatigue limit. In addition, the serious cementite asymmetrical sex is also very easy to make the non-standard bearing cracks during heat treatment of refrigeration parts, cementite asymmetrical sex will continue to reduce the service life of non-standard bearing, therefore, in material specifications of non-standard bearings, for different types of stainless steel plate are established by the provisions in particular. Who read this article also browse: non-standard bearing steel smelting of carburized layer of regulation of non-standard bearing steel smelting surface carburized layer of regulation in the non-standard bearing raw material in the specification of stainless steel plate surface carburized layer has stringent requirements, if the surface carburized layer over the requirements of the specification category, and before the heat treatment process of the production process and no clear away all the, in quenching heat treatment process is very easy to cause heat crack, lead to damaged parts. Other provisions in non-standard bearing steel material specifications of non-standard bearing steel smelting method, oxygen content, quenching, fracture strength, residual elements, flame detection, supply situation and mark have strict regulations.