In order to meet the sustainable development of the national economy in recent years, China has actively develop solar, biomass and other renewable clean energy, wind power industry also will grow rapidly. This recently completed and put into large wind power bearing production line technological transformation projects with clean and efficient features. To tie in with the country's new energy strategy to achieve perfect Shanghai Electric wind power industry chain, the project is expected annual production capacity of 1,800 sets megawatt large Precision Bearing reached in 2012, as large-scale wind power industry, high-performance provided support.
The main features of wind power bearing:
1 use in harsh environments
2 high maintenance costs
3 requires high life
Therefore, generally using a 42CrMo material after quenching IF quenching increase the surface hardness, toughness to maintain its core part.
58HRC surface hardness generally require more Roller bearing hardened layer depth control in general 3.5-5.0mm. (We processed products is such requirements) but the mechanical performance requirements more stringent, such as tensile strength, yield strength, reduction of area, elongation, impact energy J, hardness, etc. These parameters have specified national standards, but each agreement also based on technical requirements, often subject to change. Such as the national standard hardness 229-269HB, in order to improve its performance
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