| 中碳碳素结构钢S55C的球化退火工艺 |
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| 引用本文： | 史啸峰,柳萍,李波,郑文超,李博鹏,裴丹丹,鲁强. 中碳碳素结构钢S55C的球化退火工艺[J]. 金属热处理, 2021, 46(5): 193-195. DOI: 10.13251/j.issn.0254-6051.2021.05.033 |
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| 作者姓名： | 史啸峰 柳萍 李波 郑文超 李博鹏 裴丹丹 鲁强 |
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| 作者单位： | 大冶特殊钢有限公司高品质特殊钢湖北省重点实验室,湖北黄石 435001 |
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| 摘 要： | 对S55C钢进行了不同工艺的球化退火处理,研究了所获得的组织和硬度.结果表明,S55C钢经740℃保温5 h,以≤20℃/h的冷速缓冷至700℃保温5 h,再以≤40℃/h的冷速缓冷至680℃保温5 h后空冷,得到的组织为球状珠光体,珠光体球化率≥90％,硬度值165 HBW,符合客户使用要求.
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| 关 键 词： | S55 C钢 球化退火 球化率 |
| 收稿时间： | 2020-10-26 |
Spheroidizing annealing process of medium carbon non-alloyed structural steel S55C |
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| Shi Xiaofeng,Liu Ping,Li Bo,Zheng Wenchao,Li Bopeng,Pei Dandan,Lu Qiang. Spheroidizing annealing process of medium carbon non-alloyed structural steel S55C[J]. Heat Treatment of Metals, 2021, 46(5): 193-195. DOI: 10.13251/j.issn.0254-6051.2021.05.033 |
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| Authors: | Shi Xiaofeng Liu Ping Li Bo Zheng Wenchao Li Bopeng Pei Dandan Lu Qiang |
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| Affiliation: | Hubei Key Laboratory of High Quality Special Steel, Daye Special Steel Co., Ltd., Huangshi Hubei 435001, China |
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| Abstract: | Different spheroidizing annealing processes of the S55C steel were carried out and the microstructure and hardness were studied. The results show that after holding at 740 ℃ for 5 h, slowly cooling to 700 ℃ for 5 h at a cooling rate of ≤20 ℃/h, and then slowly cooling to 680 ℃ for 5 h at a cooling rate of ≤40 ℃/h, and then air cooling, the microstructure of the S55C steel is spherical pearlite, the spheroidization rate is ≥90%, and the hardness value is 165 HBW, which meet the requirements of the customer. |
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| Keywords: | S55C steel spheroidizing annealing spheroidization rate |
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