根据快速球化退火原理,从生产现场切取GCr15轴承钢管试样,按照不同的快速球化退火方案试验。观察其金相显微组织,测定退火组织硬度,获得最佳快速退火方案。球化时间缩短到7.2h,与传统球化退火工艺相比节约能源20%以上。%With the fast spheroidizing annealing theory,the section samples of GCr15 bearing steel tube are got from the production field,and then the samples are tested according to different fast spheroidizing annealing plans.By observing the metallographic microstructure and measuring the annealing organization hardness,the best fast annealing plan is found.The spheroidizing annealing time is reduced to 7.2 hours and the energy can be saved by 20% compared with the traditional spheroidizing annealing technology.
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