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发明公开
CN104805365A 一种低合金高速工具钢及一种刀具的免淬工艺 失效 - 权利终止

一种低合金高速工具钢及一种刀具的免淬工艺
摘要：
本发明公开了一种低合金高速工具钢的制备方法及其免淬工艺。一种低合金高速工具钢，所含的添加剂按重量为：W2%～8%、Mo0.5%～3%、Cr1%～5%、V0.5%～2%、Si0.5%～2%、Nb0.1%～1%。一种刀具的免淬工艺，包括如下步骤：S1—炼钢；S2—轧制：采用热轧的方式将选料工序中已经选好的低合金高速工具钢轧制成需要规格的板材；S3—冷却：轧制完成后工件温度可达到800℃～1200℃，这时使工件温度在1～8分钟内，空冷到室温；S4—下料；S5—回火：将下料后的工件，回火1～4次，回火温度300～560℃，每次回火后必须冷却到室温；S6—精加工。本发明能够省去淬火工序，节约材料，能源、人工等。
摘要（英）：

The invention discloses a low-alloy high-speed tool steel and a cutter non-quenching technology. The low-alloy high-speed tool steel comprises 2-8wt% of W, 0.5-3wt% of Mo, 1-5wt% of Cr, 0.5-2wt% of V, 0.5-2wt% of Si, and 0.1-1wt% of Nb. The cutter non-quenching technology comprises the following steps: 1, steelmaking; 2, rolling: rolling the low-alloy high-speed tool steel selected in a choosing process in a hot rolling mode to prepare a sheet with required specifications; 3, cooling: carrying out air cooling on the obtained rolled workpiece with the temperature of 800-1200DEG C to room temperature within 1-8min; 4, blanking; 5, tempering: tempering the blanked workpiece at a tempering temperature of 300-560DEG C 1-4 times, and cooling to room temperature after every tempering process; and 6, carrying out finish machining. The technology has the advantages of quenching process omission, and saving of materials, energy and manpower.

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