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| QT400﹣18球墨铸铁机体堆焊研究 |
| 王世明,李兵,尹彦普 |
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| 沪东中华造船 集团 有限公司代表室,上海,200129;沪东重机有限公司,上海,200129;上海沪临重工有限公司,上海,201306 |
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| 摘要:对QT400﹣18球墨铸铁堆焊进行工艺试验研究及评定，试验包括检测QT400﹣18焊接接头的抗拉强度、硬度、宏观及金相分析等。研究结果表明：该堆焊工艺可行，且重复性和稳定性好；试验结果成功应用于球墨铸铁柴油机机体的修复。 |
| 关键词: 机体, 球墨铸铁, 堆焊, 工艺 |
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| Research on QT400﹣18 Nodular Cast Iron Block Build﹣up Welding |
| Wang Shiming,Li Bing,Yin Yanpu |
| Naval Deputy Office of Hudong﹣Zhonghua Shipbuilding (Group) Co. , Ltd. , Shanghai 200129;Hudong Heavy Machinery Co. , Ltd. , Shanghai 200129;Shanghai Hulin Heavy Industry Co. , Ltd. , Shanghai 201306 |
| Abstract:Experiment and evaluation were carried out on the technology of QT400﹣18 nodular cast iron build﹣up welding, which included tests on the tensile strength and hardness of QT400﹣18 welded joint, as well as macroscopic and metallographic analysis. The results show that this technology is feasible, and boast good performance on repeatability and stability. The experimental achievements have been success﹣fully applied to the maintenance of nodular cast iron diesel engine blocks. |
| Key words: block nodular cast iron build﹣up welding technology |