| 提高GCr15轴承钢线材预精轧温度的研究 |
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| 引用本文： | 杨洪波,朱伏先,马宝国,刘相华.提高GCr15轴承钢线材预精轧温度的研究[J].钢铁,2009,44(10):66-66. |
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| 作者姓名： | 杨洪波 朱伏先 马宝国 刘相华 |
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| 作者单位： | 东北大学轧制技术及连轧自动化国家重点实验室 东北大学 东北大学轧制技术及连轧自动化国家重点实验室 |
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| 基金项目： | 国家自然科学基金重点资助项目(50634030) |
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| 摘 要： | 通过提高GCr15轴承钢φ10mm线材预精轧温度的工业试验，得到了网状碳化物少的细片状珠光体组织，利用实验室热模拟的方法对工业试验现象做了进一步分析。结果表明：当预精轧温度为944℃时，试验钢网状碳化物的析出时刻全部处于快速冷却阶段，球化退火后渗碳体颗粒均匀细小，网状级别可降低至1.5级，布氏硬度为202.72，强韧性能均较高，满足GB/T18254－2002《高碳铬轴承钢》和实际生产对GCr15轴承钢退火材的要求。
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| 关 键 词： | GCr15钢 预精轧温度 网状碳化物 力学性能 |
| 收稿时间： | 2008-12-22 |
Study on Increasing Pre-finishing Temperature of GCr15 Bearing Steel Wire |
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| YANG Hong-bo,ZHU Fu-xian,MA Bao-guo,LIU Xiang-hua.Study on Increasing Pre-finishing Temperature of GCr15 Bearing Steel Wire[J].Iron & Steel,2009,44(10):66-66. |
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| Authors: | YANG Hong-bo ZHU Fu-xian MA Bao-guo LIU Xiang-hua |
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| Affiliation: | YANG Hong-bo1,ZHU Fu-xian1,MA Bao-guo2,LIU Xiang-hua1(1.State Key Laboratory of Rolling and Automation,Northeastern University,Shenyang 110004,Liaoning,China,2.Special Steel Branch,Baosteel Co.,Ltd.,Shanghai 200940,China) |
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| Abstract: | Few network carbides and fine laminar pearlite were obtained in the industrial experiment on increasing the pre-finishing temperature of GCr15 bearing steel φ10mm wire, and heat simulation method was used in laboratory to analyze industrial experiment phenomena further. It was found that cementite particles are uniform and fine, network level decreases to 1.5, Brinell hardness is 202.72, and strength and toughness are both high in annealed tested steel, the time of network carbides precipitate is the moment of ultra-fast cooling, when the pre-finishing temperature is 944℃, and they all satisfy demands for GB/T18254-2002 and practical production to annealed GCr15 bearing steel. |
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| Keywords: | GCr15 steel pre-finishing temperature network carbide mechanical property |
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