Effect of N Content on End-Quenching Property of Boron Steel 35MnB

杨高成; 孙鸿平

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Effect of N Content on End-Quenching Property of Boron Steel 35MnB

更新时间：2026-01-21

- Effect of N Content on End-Quenching Property of Boron Steel 35MnB
- Special Steel Vol. 32, Issue 5, Pages: 51-52(2011)
- 作者机构：
  
  江阴兴澄特种钢铁有限公司，江阴,214429
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：15 April 2011，
  
  Online First：04 November 2022，
  
  Published：04 November 2011
- 稿件说明：
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杨高成, 孙鸿平. Effect of N Content on End-Quenching Property of Boron Steel 35MnB[J]. Special Steel, 2011, 32(5): 51-52.
DOI：

杨高成, 孙鸿平. Effect of N Content on End-Quenching Property of Boron Steel 35MnB[J]. Special Steel, 2011, 32(5): 51-52. DOI：

摘要

35MnB钢由40 t EAF-LF-VD-180 mm×180 mm连铸的电弧炉流程和100 t BOF-LF-RH-200 mm×200mm连铸转炉流程冶炼。35MnB钢技术协议要求J19 HRC值为33～41。试验结果表明

电弧炉流程生产的35MnB钢J19HRC值为25～28

转炉流程生产的35MnB钢末端淬火试验J19HRC值为36～41。对比分析了电弧炉流程和转炉流程生产的35MnB钢的末端淬火性能。分析得出

电弧炉流程生产的35MnB钢中的平均N含量高达(80～90)×10

-6

、转炉流程为(45～50)×10

-6

电炉钢中高N含量影响了B对提高钢材淬透性的作用

为了保证钢材末端淬火性能

应控制钢中N含量≤50×10

-6

。

Abstract

Steel 35MnB is melted by 40 t EAF-LF-VD-180 mm x 180 mm billet CC arc furnace flow sheet and 100 t BOF-LF-RH-200 mm x 200 mm billet CC Converter flow sheet. The requirement of technical specifications for steel 35MnB is end-quenching hardenability J19 HRC value is 33 〜41. Examination results show that the JI9 HRC value of steel 35MnB produced by arc furnace flow sheet is 25 〜28

and the J19 HRC value of steel 35MnB produced by converter flow sheet is 36 ~ 41. The end-quenching hardenabilities of steel 35MnB produced by arc furnace flow sheet and converter flow sheet have been compared and analyzed. It is obtained by analysis that the average N content in steel 35MnB produced by arc furnace reaches (80 ~ 90) x 10

-6

and that produced by converter is (45 ~ 50) x 10

-6

the high N content in EAF steel influences the effect of B t

o improve hardenability of steel products

in order to ensure the end-quenching properties of steel products

the N content in steel should be controlled ≤50 x 10

-6

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