Development of Gear Steel 20CrMnTiH with Narrow Hardenability Band

刘年富

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Development of Gear Steel 20CrMnTiH with Narrow Hardenability Band

更新时间：2026-01-21

- Development of Gear Steel 20CrMnTiH with Narrow Hardenability Band
- Special Steel Vol. 39, Issue 1, Pages: 41-43(2018)
- 作者机构：
  
  宝钢特钢韶关有限公司特钢制造部,韶关,512123
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：30 August 2017，
  
  Online First：01 July 2022，
  
  Published：01 July 2018
- 稿件说明：
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刘年富. Development of Gear Steel 20CrMnTiH with Narrow Hardenability Band[J]. Special Steel, 2018, 39(1): 41-43.
DOI：

刘年富. Development of Gear Steel 20CrMnTiH with Narrow Hardenability Band[J]. Special Steel, 2018, 39(1): 41-43. DOI：

摘要

开发的窄淬透性带20CrMnTiH齿轮钢的生产工艺流程为铁水预脱硫-130t BOF-LF-RH-280mm×280mm坯连铸-轧制至Φ60mm圆钢。通过设计的内控成分（/%:0.18~0.20C，0.20~0.30Si，0.90~0.98Mn，≤0.025P，≤0.010S，0.05~0.07Ti，≤0.0015O），设立结晶器电磁搅拌参数200A

2.5Hz，控制拉速0.62m/min，过热度15~30℃。检验结果表明

化学成分稳定

钢中氧含量≤11.3×10

-6

非金属夹杂级别≤1.0，带状组织级别≤2.0

淬透性带宽HRC值≤3.5

满足产品协议要求。

Abstract

The production process flowsheet for developed gear steel 20CrMnTiH with narrow hardenability band is metal pre~desulphurizalion-130t BOF-LF-RH-280 mm x 280 mm bloom casting-rolling to Φ60 mm round bar. With designed interior composition (/% : 0.18 ~ 0.20C

0.20 ~ 0.30Si

0.90 〜0.98Mn

≤0. 025P

≤0. 010S

0.05 ~ 0.07Ti

≤0.0015O)

setting mold electromagnetism stirring parameters 200A

2.5Hz

controlling casting speed 0.62 m/min

liquid superheating extent 15〜30 °C

the examination results show that the chemical composition is stable

the oxygen content in steel ≤1.3 x 10

-6

the rating of nonmetallic inclusions ≤1.0

the rating of banding structure ≤2.0 and the AHRC value of hardenability band ≤3.5 to meet the requirement of products specification.

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