Tao Shijun,Xiao Aiping,Li Xu,et al.Development of ϕ800 mm Forging Bar for GCr15SiMn2 Bearing Steel Applied for High-power Wind Main Bearings[J].Special Steel,2023,44(05):39-42.
Tao Shijun,Xiao Aiping,Li Xu,et al.Development of ϕ800 mm Forging Bar for GCr15SiMn2 Bearing Steel Applied for High-power Wind Main Bearings[J].Special Steel,2023,44(05):39-42. DOI: 10.20057/j.1003-8620.2023-00015.
Development of 800 mm Forging Bar for GCr15SiMn2 Bearing Steel Applied for High-power Wind Main Bearings
800 mm diameter high carbon chromium bearing steel GCr15SiMn2 large specification forging material through the process of 70 t electric arc furnace→LF→RH refining→20 t die casting ingot→forging
,
the products are used to make ≥5 MW high power wind turbine main bearings. By means such as controlling the residual elements
≥6], RH vacuum treatment,protective casting, reasonable pouring process (pouring temperature and speed) , two times upsetting and stretching process (comprehensive forging ratio ≥4) and other measures, it can meet the microstructure level of steel 1.0 class, the rating of inclusions for B fine, D fine and DS in steel were 0.5-1.0 class, carbide banding level CZ7.5, the hardenability J45 mm reach 61.0HRC, all performance meet the standard requirements.