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对铬钼钒系不同镍含量的热作模具钢进行了退火工艺试验，讨论了镍含量对此类钢退火硬度和组织的影响，据此确定了热作模具钢４Ｃｒ３Ｍｏ２ＮｉＶＮｂＢ的退火工艺参数。
Annealing process of hot work die steel with different nickel content of Cr, M and V was studied. The effect of nickel content on the hardness and microstructure of annealed steel was discussed. The annealing process parameters of hot work die steel 4Cr3Mo2NiVNbB were determined.