Production Practice of Steel 18CrNi3MoA Forge Round Bar for Depth Drill Bit

郑安雄; 徐素鹏; 王学玺; 王欢; 童利利; 黑志刚

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Production Practice of Steel 18CrNi3MoA Forge Round Bar for Depth Drill Bit

更新时间：2026-01-21

- Production Practice of Steel 18CrNi3MoA Forge Round Bar for Depth Drill Bit
- Special Steel Vol. 42, Issue 2, Pages: 49-51(2021)
- 作者机构：
  
  1. 河南中原特钢装备制造有限公司技术中心,济源,459000
  2. 2济源职业技术学院冶金化工系,济源,459000
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：16 April 2022，
  
  Published：16 April 2021
- 稿件说明：
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郑安雄, 徐素鹏, 王学玺, et al. Production Practice of Steel 18CrNi3MoA Forge Round Bar for Depth Drill Bit[J]. Special Steel, 2021, 42(2): 49-51.
DOI：

郑安雄, 徐素鹏, 王学玺, et al. Production Practice of Steel 18CrNi3MoA Forge Round Bar for Depth Drill Bit[J]. Special Steel, 2021, 42(2): 49-51. DOI：

摘要

根据潜孔钻头用钢18CrNi3MoA技术要求及钢种特性

通过40t电弧炉（终点[C

]

≥0.05%、P≤0.003%

出钢温度≥1630℃）-LF（精炼渣碱度3.0～4.5）-VD（≤70 Pa时间≥25 min）-氩气保护1.52t铸锭-钢锭（1250±10℃ 15h均质化处理-锻坯Φ140 mm

780～810℃锻至Φ110 mm-完全退火等工艺

试制的3炉18CrNi3MoA钢圆棒的化学成分均满足技术要求

锻材氧含量12.0×10

-6

～13.5×10

-6

非金属夹杂物均≤1级;带状组织2级、奥氏体晶粒度8.5级

力学性能测定均满足技术要求。

Abstract

According to depth drill bit steel

]

8CrNi3MoA's technical requirements and steel properties

three heats steel 18CrNi3MoA round bars are produced by process of 40t EAF (end [ C

]

≥0. 05%

[ P

]

≤

0. 003%

tapping temperature ≥1630

℃

) -LF fining (refining slag basicity 3. 0 ~4.5)-VD ( ≤70

≥ 25 min)-argon shield 1.52 t ingot-casting- ingot homogenization treated at (1250 ± 10) ℃ for 15h-forging billet Φ140 mm at 780 -810℃ forging to Φ110 mm-full annealing. The chemical constituents satisfied the technical requirements

oxygen content in forgings 12.0 x 10

-6

~ 13. 5 x 10

-6

non-metallic inclusions rating≤1

rating of banded structure is 2

austenitic grain scale is 8.5

and mechanical properties test satisfiy the technical requirements.

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