| ZG70Cr3NiMo耐磨铸钢件热处理工艺的改进 |
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| 引用本文： | 姚宏伟,黄汝清,李大平,姚德伟,杨弋涛.ZG70Cr3NiMo耐磨铸钢件热处理工艺的改进[J].热处理,2009,24(3):44-47. |
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| 作者姓名： | 姚宏伟 黄汝清 李大平 姚德伟 杨弋涛 |
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| 作者单位： | 1. 上海大学材料科学与工程学院,上海,200072
2. 江西铜业集团,德兴,铸造有限公司,江西,德兴,334224 |
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| 摘 要： | ZG70Cr3NiMo耐磨铸钢空冷淬火即可获得较高的表面硬度，但冲击韧度不足，即使淬火后采用较高的回火温度仍不能确保良好的耐冲击性能。热处理工艺试验结果表明，采用950℃缓冷淬火、450℃回火缓冷的热处理工艺，可得到较均匀的硬度（约50HRC），其马氏体组织也较为细小、均匀，从而满足球磨机衬板的使用要求。
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| 关 键 词： | 耐磨铸钢 热处理 球磨机衬板 缓冷 |
Improvement on Heat Treatment Process for ZG70Cr3NiMo Wear-resistant Cast Steel Part |
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| YAO Hong-wei,HUANG Ru-qing,LI Da-ping,YAO De-wei,YANG Yi-tao.Improvement on Heat Treatment Process for ZG70Cr3NiMo Wear-resistant Cast Steel Part[J].Heat Treatment,2009,24(3):44-47. |
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| Authors: | YAO Hong-wei HUANG Ru-qing LI Da-ping YAO De-wei YANG Yi-tao |
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| Affiliation: | YAO Hong-wei, HUANG Ru-qing , LI Da-ping , YAO De-wei , YANG Yi-tao( 1. School of Materials Science and Engineering, Shanghai University, Shanghai, 200072; 2. Jiangxi Copper Industry Group (Dexin) Casting Co., Ltd., Dexin 334224, Jiangxi) |
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| Abstract: | ZG70Cr3NiMo wear-resistant cast steel part will provide higher surface hardness but insufficient impact toughness after air-quenching. Fine impact property of ZGTOCr3NiMo steel can＇t be obtainded even after high temperature tempering. The heat treatment process test reveals that relatively uniform hardness （about 50 HRC） and fine-uniform martensite can be obtained by means of quenching from 950 ℃ with a slow cooling rate and subse- quently tempering at 450 ℃ and slow clloing for ZG70Cr3NiMo steel, thus meeting the needs of ball mill liner in service. |
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| Keywords: | wear-resistant cast steel heat treatment ball mill liner slow cooling |
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