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发明公开
CN110699597A 一种热作模具钢及其制备方法 无效 - 驳回

一种热作模具钢及其制备方法
摘要：
本发明涉及材料成分设计与制备领域，具体为一种热作模具钢材料及其制备方法。按重量百分比计，此热作模具钢由以下组分和含量组成：C为0.40～0.60％；Si为0.20～0.70％；Mn为0.20～0.80％；Cr为4.00～6.00％；Mo为1.70～2.50％；V为0.30～0.60；W为≤0.30；Ni为0.10～2.00；Al≤0.05％；P≤0.020％；S≤0.005％，RE≤0.02％，余量为Fe，合计100％。在制备方法中，经过准备原料，进行熔炼、精炼，浇铸成铸锭后，通过均匀化处理及超细化处理制备成锻材，再经性能热处理形成上述热作模具钢。本发明通过合金成分优化设计、钢水纯净化处理以及锻造、热处理组织控制，最终使热作模具钢获得较好的综合性能。
摘要（英）：

The invention relates to the field of material component design and preparation, in particular to hot work die steel and a preparation method thereof. The hot work die steel is prepared from the following components in percent by weight: 0.40-0.60% of C, 0.20-0.70% of Si, 0.20-0.80% of Mn, 4.00-6.00% of Cr, 1.70-2.50% of Mo, 0.30-0.60% of V, less than or equal to 0.30% of W, 0.10-2.00% of Ni, lessthan or equal to 0.05% of Al, less than or equal to 0.020% of P, less than or equal to 0.005% of S, less than or equal to 0.02% of RE and the balance Fe, totaling 100%. The preparation method comprises the following steps: carrying out raw material preparation for smelting, refining and casting a cast ingot; preparing forged steel by means of homogenization treatment and refined treatment; and forming the hot work die steel by means of performance heat treatment. By means of optimized design of alloy components, molten steel purification treatment and forging and heat treatment tissue control, the hot work die steel has relatively good comprehensive properties finally.

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