ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2021, Vol. 42 ›› Issue (2): 49-51.

• 工艺技术 • 上一篇    下一篇

潜孔钻头用钢18CrNi3MoA锻制圆棒的生产实践

郑安雄1,徐素鹏2,王学玺1,王欢1,童利利1,黑志刚1   

  1. 1河南中原特钢装备制造有限公司技术中心,济源459000; 2济源职业技术学院冶金化工系,济源459000
  • 出版日期:2021-04-01 发布日期:2022-04-16
  • 作者简介:郑安雄(1984-),男,工程师,2008年太原科技大学(本科) 毕业,特种钢铁材料的热加工技术研究及产品开发。

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

Zheng Anxiong1, Xu Supeng2, Wang Xuexi1, Wang Huan1, Tong Lili1 , Hei Zhigang1   

  1. 1 Technology Center, Henan Zhongyuan Special Steel Equipment Manufacturing Go Ltd, Jiyuan 459000;2 Department of Metallurgy and Chemical Engineering, Jiyuan Vocational and Technical College, Jiyuan 459000)
  • Published:2021-04-01 Online:2022-04-16

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。

关键词: 潜孔钻头, 18CrNi3MoA钢, 生产实践, 力学性能, 氧含量, 晶粒度

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, Pa,≥ 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.

Key words: Depth Drill Bit, 18CrNi3MoA Steel, Production Practice, Mechanical Properties, Oxygen Content, Grain Scale ,