Control of GCr15 bearing steel wire rod carbide banded structure
The effects of soft reduction technology and different high-temperature diffusion times on the band mor-phology and particle size of carbides were investigated.The results indicate that the use of continuous casting and soft re-duction technology can effectively improve the segregation of billets;With the increase of high-temperature diffusion time,the overall banded level of carbides shows a decreasing trend,and the particle size gradually decreases.The particle size with a diffusion time of 11 hours is about 2.5 μm.Continuing to extend the time,there is not much change in parti-cle size.Therefore,by choosing the soft reduction process during continuous casting and high-temperature diffusion 11 hour process for production,a carbide banded structure with dispersed particles and relatively small size can be obtained.
GCr15 bearing steelsoft reductioncarbide particlessegregationhigh-temperature diffusion time
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