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 ›› 2009, Vol. 30 ›› Issue (1): 58-59.

• 组织和性能 • 上一篇    下一篇

热处理工艺对SAE8620H低碳齿轮钢带状组织的影响

谢文新1,2,  李国忠1,2,  曹红福1   

  1. 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
  • 收稿日期:2008-07-16 出版日期:2009-02-01 发布日期:2022-11-30
  • 作者简介:谢文新(1966-),男,高级工程师,1989年上海大学毕业,炼钢生产技术管理。

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

Xie Wenxin1,2, Li Guozhong1,2, Cao Hongfu1   

  1. 1 Xingcheng Special Steel Co Ltd, Jiangyin 214429;
    2 School of Metallurgical and Ecological Engineering. University of Science and Technology, Beijing 100083
  • Received:2008-07-16 Published:2009-02-01 Online:2022-11-30

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。

关键词: 低碳齿轮钢, 等温退火, 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.

Key words: Low Carbon Gear Steel, Isothermal Annealing, Banding Structure