| 热处理工艺对SAE8620H低碳齿轮钢带状组织的影响 |
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| 引用本文： | 谢文新,李国忠,曹红福.热处理工艺对SAE8620H低碳齿轮钢带状组织的影响[J].特殊钢,2009,30(1):58-59. |
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| 作者姓名： | 谢文新 李国忠 曹红福 |
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| 作者单位： | 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 |
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| 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。
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| 关 键 词： | 低碳齿轮钢 等温退火 带状组织 |
| 收稿时间： | 2008-07-16 |
Effect of Heat Treatment Process on Banding Structure of Low Carbon Gear Steel SAE8620H |
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| Xie Wenxin,Li Guozhong,Cao Hongfu.Effect of Heat Treatment Process on Banding Structure of Low Carbon Gear Steel SAE8620H[J].Special Steel,2009,30(1):58-59. |
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| Authors: | Xie Wenxin Li Guozhong Cao Hongfu |
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| Affiliation: | 1 Xingcheng Special Steel Co Ltd, Jiangyin 214429；
2 School of Metallurgical and Ecological Engineering. University of Science and Technology, Beijing 100083 |
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| 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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| Keywords: | Low Carbon Gear Steel Isothermal Annealing Banding Structure |
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