| QT700球墨铸铁曲轴的激光冲击强化试验 |
| |
| 引用本文： | 任旭东,张永康,周建忠,孔德军,张新权.QT700球墨铸铁曲轴的激光冲击强化试验[J].江苏大学学报(自然科学版),2007,28(4):289-292. |
| |
| 作者姓名： | 任旭东 张永康 周建忠 孔德军 张新权 |
| |
| 作者单位： | 江苏大学,机械工程学院,江苏省光子制造科学与技术重点实验室,江苏,镇江,212013 |
| |
| 基金项目： | 国家自然科学基金
,
江苏省高校自然科学基金 |
| |
| 摘 要： | 选用不同涂层对QT700曲轴激光冲击处理,研究激光冲击强化条件下,QT700曲轴的硬度和表面残余应力等力学性能的变化.发现在激光冲击过程中,黑漆涂层、铝箔涂层和硅酸乙脂涂层均能有效提高冲击试样的表面硬度和表面应力.经过激光连续冲击后,在曲轴试件表面能形成1.0 mm厚的硬化层,其表面硬度最大能达到590 HV.激光脉冲功率从2.8 GW/cm2提高到3.6GW/cm2时,轴颈表面残余压应力相应由326 MPa提高到495 MPa,两次冲击后提高幅值更大.
|
| 关 键 词： | QT700曲轴 激光冲击 残余应力 表面硬度 涂层 球墨铸铁曲轴 激光冲击 强化试验 laser shock processing crankshaft 残余压应力 脉冲功率 硬化层 表面应力 试件 连续冲击 表面硬度 试样 高冲击 硅酸 铝箔 黑漆 冲击过程 发现 变化 |
| 文章编号： | 1671-7775（2007）04-0289-04 |
| 修稿时间： | 2005-09-28 |
Experiment with QT700 crankshaft by laser shock processing |
| |
| REN Xu-dong,ZHANG Yong-kang,ZHOU Jian-zhong,KONG De-jun,ZHANG Xin-quan.Experiment with QT700 crankshaft by laser shock processing[J].Journal of Jiangsu University:Natural Science Edition,2007,28(4):289-292. |
| |
| Authors: | REN Xu-dong ZHANG Yong-kang ZHOU Jian-zhong KONG De-jun ZHANG Xin-quan |
| |
| Institution: | Jiangsu Provincial Key Laboratory of Laser Manufacture Science and Technology, School of Mechanical Engineering, Jiangsu University, Zhenjiang,Jiangsu 212013 ,China |
| |
| Abstract: | Laser shock processing(LSP) employs high-energy laser pulses from a solid-state laser to create intense shock waves in a material.Three different coatings were used on QT700 crankshaft during laser shock processing.The effect of the laser shock processing on hardness and surface residual stress of QT700 crankshaft was studied.Three different ablative coatings,black paint,aluminum foil and silica acid black paint are used to protect QT700 crank shaft from surface melting by the laser pulse,which adversely increase surface hardness and surface residual stress.The depth of hardening by laser processing of QT700 crankshaft reaches to 1.0 mm,the surface hardness reaches to 590 HV after connective laser processing.When laser pulse energy density increases from 2.8 GW/cm2 to 3.6 GW/cm2,the surface residual stress of QT700 crankshaft increases from 326 MPa to 495 MPa.Fatigue life and abrasion of QT700 crank shaft increase obviously. |
| |
| Keywords: | QT700 crankshaft laser shock processing residual stress surface hardness coating |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
