研究了显象管玻壳模具用 4Cr5MoSiV1钢的不同热处理工艺下的组织与硬度的关系 ,特别是回火温度与硬度的关系 ,提出了预备热处理采用 1 1 0 0℃淬火 ,82 0℃回火的调质处理替代退火处理 ,随后经 1 0 2 0℃淬火 ,780～80 0℃× 4h回火 2次 ,并改善炉内温度分布状况 ,可得到较为均匀理想的组织和性能 The relationship between microstructure and hardness of 4Cr5MoSiV1 steel under different heat treatment processes was studied. The relationship between tempering temperature and hardness was proposed. Pre-treatment heat treatment was carried out at 1100 ℃ quenching and 82 ℃ tempering Of the quenching and tempering treatment instead of annealing, followed by quenching at 102 ℃, 780 ~ 80 0 ℃ × 4h tempering twice, and to improve the temperature distribution within the furnace, you can get a more homogeneous and ideal organization and performance