GCr15轴承钢中渗碳体粒径的调控对其硬度的影响

刘晶, 李云杰, 秦煜, 李琳琳

Influence of Particle Size Control of Cementite on Hardness of GCr15 Bearing Steel

LIU Jing, LI Yunjie, QIN Yu, LI Linlin

表1 试样的编号和热处理工艺

Table 1 Q-T-(Q)-(T) heat treatment procedure

Sample Quenching Tempering Quenching Tempering SP1 930 oC × 1 h + oil quenching 700 oC × 6 h + oil quenching SP2 930 oC × 1 h + oil quenching 700 oC × 12 h + oil quenching SP3 930 oC × 1 h + oil quenching 700 oC × 24 h + oil quenching SP4 930 oC × 1 h + oil quenching 700 oC × 48 h+ oil quenching QT1 930 oC × 1 h + oil quenching 700 oC × 6 h + oil quenching 840 oC × 10 min + oil quenching 160 oC × 2 h + air cooling QT2 930 oC × 1 h + oil quenching 700 oC × 12 h + oil quenching 840 oC × 10 min + oil quenching 160 oC × 2 h + air cooling QT3 930 oC × 1 h + oil quenching 700 oC × 24 h + oil quenching 840 oC × 10 min + oil quenching 160 oC × 2 h + air cooling QT4 930 oC × 1 h + oil quenching 700 oC × 48 h + oil quenching 840 oC × 10 min + oil quenching 160 oC × 2 h + air cooling