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| 高性能全激冷铸铁凸轮轴的生产和应用 | |
| 引用本文： | 李莉,沈保罗,岳昌林,刘建刚.高性能全激冷铸铁凸轮轴的生产和应用[J].现代铸铁,2007,27(1):56-59. |
| 作者姓名： | 李莉 沈保罗 岳昌林 刘建刚 |
| 作者单位： | 1. 成都金顶凸轮轴铸造有限公司,四川,郫县,611732 2. 成都金顶凸轮轴铸造有限公司,四川,郫县,611732;四川大学,材料科学与工程学院,四川,成都,610064 3. 四川大学,材料科学与工程学院,四川,成都,610064 |
| 摘 要： | 采用树脂砂壳型铸造和四川钒钛生铁生产了一种全激冷Cr-Ni-Cu系铸铁凸轮轴,其显微组织由初生奥氏体枝晶和D型石墨 奥氏体共晶体组成,奥氏体随后转变成珠光体;珠光体含量大于95%,渗碳体含量为3%～6%;凸轮激冷层为莱氏体,硬度为50～58HRC,激冷层深度为5～10mm。金相分析发现,钛促进了D型石墨的形成,使凸轮轴非激冷部位的强度达到246～260MPa,硬度为226～260HB;目前,这种凸轮轴已经得到广泛应用。 |
| 关 键 词： | 全激冷凸轮轴 D型石墨 高强度 生产 应用 |
| 文章编号： | 1003-8345(2007)01-0056-04 |
| 修稿时间： | 2006-10-23 |
Production and Application of Fully Chilled Cast Iron Camshaft with High Properties |
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| Li Li,Shen Bao-luo,Yue Chang-lin,Liu Jian-gang.Production and Application of Fully Chilled Cast Iron Camshaft with High Properties[J].Modern Cast Iron,2007,27(1):56-59. | |
| Authors: | Li Li Shen Bao-luo Yue Chang-lin Liu Jian-gang |
| Affiliation: | 1.Chengdu Jinding Camshaft Foundry Co.Ltd, Sichuan, Pixian County 611732,China; 2,College of Material Science and Engineering, Sichuan University, Chengdu 610064,China |
| Abstract: | A sort of fully chilled Cr-Mo-Cu alloyed camshaft was produced in phenol resin -coated sand shell mold with local V-Ti containing pig iron as melting charge. Its microstructure consists of primary austenite dendrite and D-type graphite plus austenite eutectic. Then the austenite eutectic transformed into pearlite. The content of pearlite is more than 95%, and cementite content is 3%-6%. The chilled layer of the cam consists ledeburite with hardness 50-58 HRC,and the chilled layer depth is 5-10 mm. Microstructure analysis found that Ti promotes D-type graphite formation, and as a result, the strength of unchilled area of the camshaft reached 246-260 MPa, and its hardness reached 226-260 HB. At present, this type of camshaft has been widely used. |
| Keywords: | fully chilled camshaft D-type graphite high strength |
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