Effect of C, Mn, Cr on Hardenability of Medium Carbon MnB Steel 228 Pitch Crawler Belt

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Effect of C, Mn, Cr on Hardenability of Medium Carbon MnB Steel 228 Pitch Crawler Belt

更新时间：2026-01-21

- Effect of C, Mn, Cr on Hardenability of Medium Carbon MnB Steel 228 Pitch Crawler Belt
- Special Steel Vol. 33, Issue 6, Pages: 53-55(2012)
- 作者机构：
  
  攀钢集团研究院有限公司,攀枝花,617000
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：25 May 2012，
  
  Online First：30 September 2022，
  
  Published：30 September 2012
- 稿件说明：
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邓通武. Effect of C, Mn, Cr on Hardenability of Medium Carbon MnB Steel 228 Pitch Crawler Belt[J]. Special Steel, 2012, 33(6): 53-55.
DOI：

邓通武. Effect of C, Mn, Cr on Hardenability of Medium Carbon MnB Steel 228 Pitch Crawler Belt[J]. Special Steel, 2012, 33(6): 53-55. DOI：

摘要

针对碳含量≥0.30%的40SiMn2、35MnTiB和30MnTiB制造的履带板淬火后易出现细小裂纹

不能满足履带板抗断裂性要求。而生产的23MnB钢(/%:0.20～0.27C、0.80～1.10Mn、≤0.20Cr、0.000 5～0.003 0B)的淬透性HRC J

1.5

42.5～49.0

13.0

17.5～37.0达不到228节距HRC J1.544～55和J13.0≥35的要求

通过150 kg中频感应炉试验和120 t BOF-LF-RH-CC-轧制的工艺试验得出

当钢的成分调整为(/%):0.24～0.30C、1.10～1.50Mn、0.20～0.50Cr、0.000 5～0.003 0B时

钢的淬透性HRC J

1.5

=48.0～50.0

13.0

=42.5～46.5可满足228节距履带板的淬透性和抗断裂性要求。

Abstract

As the quenched crawler belt manufactured by steel 40SiMn2

35MnTiB and 30MnTiB ( C≥030% ) easily occurs micro-cracks that doesn' t meet the requirement of anti-fracture behavior

while the hardenability HRC J

1.5

42. 5 〜 49. 0 and J

13.0

17. 5 ~ 37. 0 of produced steel 23MnB (/% : 0.20 - 0. 27C

0. 80 〜1. 10Mn

≤0. 20Cr

0：0005 〜 0. 003 0B) can't meet the requirement of hardenability HRC J

1.5

44 ~ 55 and J

13.0

≥35 for 228 pitch crawler belt

by 150 kg medium induction furance test and 120t BOF-LF-RH-CC-rolling pilot commercial production it is obtained that as adjusted composition of steel is (/% ) 0. 24 ~0. 30C

1. 10 ~ 1. 50Mn

0. 20 ~ 0. 50Cr

0. 000 5 ~0. 003 0B

the steel hardenability HRC J

1.5

=48. 0

~ 50. 0

13.0

=42. 5 〜46. 5

it meets the requirements of hardenability and anti-fracture behavior for 228 pitch crawler belt.

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