Effect of Heat Treatment Process on Banding Structure of Low Carbon Gear Steel SAE8620H

谢文新; 李国忠

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Effect of Heat Treatment Process on Banding Structure of Low Carbon Gear Steel SAE8620H

更新时间：2026-01-21

- Effect of Heat Treatment Process on Banding Structure of Low Carbon Gear Steel SAE8620H
- Special Steel Vol. 30, Issue 1, Pages: 58-59(2009)
- 作者机构：
  
  1. 江阴兴澄特种钢铁有限公司，江阴,214429
  2. 北京科技大学冶金与生态工程学院,北京,100083
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：16 July 2008，
  
  Online First：30 November 2022，
  
  Published：30 November 2009
- 稿件说明：
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谢文新, 李国忠. Effect of Heat Treatment Process on Banding Structure of Low Carbon Gear Steel SAE8620H[J]. Special Steel, 2009, 30(1): 58-59.
DOI：

谢文新, 李国忠. Effect of Heat Treatment Process on Banding Structure of Low Carbon Gear Steel SAE8620H[J]. Special Steel, 2009, 30(1): 58-59. DOI：

摘要

试验了由300mm×340mm连铸坯生产的SAE8620H齿轮钢(%:0.19C、0.48Cr、0.48Ni、0.18Mo、0.032Al)φ100mm轧材在热轧、完全退火(930℃1 h炉冷至650℃1 h空冷)以及等温退火(930℃1 h出炉快冷至650℃1 h空冷)3种状态下的的带状组织。结果表明

完全退火后轧材带状级别较热轧态高;因930～650℃快冷抑制先共析铁素体的析出

等温退火轧材带状级别较热轧态低1.0～1.5

显著改善了钢的带状组织。

Abstract

Banding structure of φ100 mm rolled products produced by 300 mm X 340 mm cast bloom of gear steel SAE8620H （0. 19C

0. 48Cr

0. 48Ni

0. 18Mo

0.32 Al） with 3 process conditions- hot rolled

completed annealed treatment-heating at 930 °C 1 h furnace cooling to 650 °C 1 h air cooling

and isothermal annealed treatment-heating at 930 °C 1 h outside furnace quick cooling to 650 °C 1 h air cooling has been tested. Results showed that the rating of banding structure of completed annealed rolled-products was higher than that of hot rolled ； and the rating of banding structure of isothermal annealed rolled-products was lower than that of hot rolled by 1. 0 ~ 1. 5

due to quick cooling from 930 °C to 650 °C to inhibit proeutectoid ferrite precipitation that obviously improved the banding structure of steel.

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