Production of φ350 mm 17-4PH Stainless Steel Practice by EAF-VOD-2.5t ESR-Forging Flow Sheet

柯其棠; 柳学胜; 陈长西; 周丛惠

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Production of φ350 mm 17-4PH Stainless Steel Practice by EAF-VOD-2.5t ESR-Forging Flow Sheet

更新时间：2026-01-21

- Production of φ350 mm 17-4PH Stainless Steel Practice by EAF-VOD-2.5t ESR-Forging Flow Sheet
- Special Steel Vol. 27, Issue 6, Pages: 61-62(2006)
- 作者机构：
  
  大冶特殊钢股份有限公司,黄石,435001
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：21 June 2006，
  
  Online First：02 March 2023，
  
  Published：02 March 2006
- 稿件说明：
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柯其棠, 柳学胜, 陈长西, et al. Production of φ350 mm 17-4PH Stainless Steel Practice by EAF-VOD-2.5t ESR-Forging Flow Sheet[J]. Special Steel, 2006, 27(6): 61-62.
DOI：

柯其棠, 柳学胜, 陈长西, et al. Production of φ350 mm 17-4PH Stainless Steel Practice by EAF-VOD-2.5t ESR-Forging Flow Sheet[J]. Special Steel, 2006, 27(6): 61-62. DOI：

摘要

采用EAF-VOD工艺冶炼17-4PH沉淀硬化不锈钢(%:≤0.04C、16.20～16.50Cr、4.50～4.70Ni、3.30～3.40Cu、0.25～0.40Nb)

铁模下铸Φ320mm电极

并电渣重熔(ESR)成2.5t(Φ510～550mm)锭

经800t液压机或5t蒸汽锻锤生产17-4PH钢Φ350mm大规格锻材成品。工艺实践表明

控制停锻温度(蒸气锤980℃;液压机1050℃)

将锻成的Φ350mm17-4PH钢成品材返回至室式加热炉(1130～1150℃)均热

缓冷至(1050±10)℃均热后

炉冷至420℃

并及时在650℃退火

有效地消除了该钢锻后炸裂现象。

Abstract

The φ350 mm heavy forging products of 17-4PH precipitation hardening stainless steel were produced by EAF-VOD process melting and pig iron mold bottom casting φ320 mm electrode of 17-4PH steel(≤0.04C

16.20~ 16.50Cr

4.50~4.70Ni

3.30～3.40Cu

0.25～0.40Nb)

then remelted to 2.5 t(φ510～550mm)ESR ingot and forged by 800 t hydraulic press or 5 t steam hammer. The process practice showed that it was available to avoid cracking of the steel after forging by controlling end forging temperature(steam hammer 980 ℃;hydraulic press 1050℃)

soaking forged φ350 mm 17-4PH steel products in cover-type furnace(1130~1150℃)

then slow cooling to(1050±10)℃ and soaking

fumnace cooling to 420℃

and in time annealing at 650℃.

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