超快速冷却对轴承钢球化退火的影响
Effect of Ultra-fast Cooling Process on Spheroidal Annealing of Bearing Steel
王永红1, 李 壮2, 张金明3
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作者单位:(1. 河北永洋钢铁有限公司, 河北 永年 057150; 2. 沈阳航空工业学院 材料科学与工程学院, 辽宁 沈阳 110034; 3. 沈阳标准件研究所, 辽宁 沈阳 110141)
中文关键字:轴承钢; 超快冷却; 球化退火; 粒状珠光体
英文关键字:bearing steel; ultra-fast cooling process; spheroidal annealing; spheroidal pearlite
中文摘要:通过对轴承钢热轧后超快冷却, 再进行球化退火,研究了超快速冷却对轴承钢球化退火后组织和性能的影响。结果表明:轴承钢经热轧后超快冷却、球化退火后,碳化物球化明显。随着终冷温度的降低,轴承钢球化退火后球化组织均匀,硬度增大。轴承钢超快冷却有助于珠光体获得更好的球化效果。
英文摘要:The effects of ultra-fast cooling process on the microstructure and mechanical properties of bearing steel after hot rolling and then spheroidal annealing were investigated. The results show that it is obvious for spheroidal annealing structure the adopt ultra-fast cooling process. Spheroidal annealing structure is satisfactory and hardness increases with the decrease of final cooling temperature. The ultra-fast cooling process contributes to good spheroidal effect of pearlite.