Productive Practice of GCr15 Bearing Steel Spheroidized by Roller-hearth Continuous Annealing Furnace
The stable pearlite spheroidizing structure of GCr15 bearing steel was got by roller-hearth continuous annealing process. The pass of its brinell hardness(HB) is up to 99%, and the depth of the decarburized layer doesn't markedly increase. It is showed that roller-hearth continuous annealing furnace has superiority in heat-treating GCr15 bearing steel.