摘要: |
开展了前封头壳体焊缝单独退火与整体退火两种工艺试验研究,分析了退火次数对焊缝组织、力学性能及壳体变形的影响,对比了焊接质量、生产效率及成本。试验结果表明:退火次数对焊缝组织的影响不大,对焊接接头机械性能的影响可以忽略。对比焊缝单独退火工艺,连续焊接整体退火工艺更优,能够保证前封头壳体焊接质量,焊接生产效率提高了100%,每件产品节约生产成本140元,同时降低了操作人员的劳动强度。 |
关键词: 退火次数;前封头壳体;显微组织;力学性能 |
基金项目: |
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Effects of Annealing Times on Microstructure and Mechanical Properties of Front Dome Shell Welds |
Meng Qiang Yang Lihe Zheng Li Liu Tao Qin Yu Wang Chao
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Xi’an Changfeng Research Institute of Mechanism and Electricity, Xi’an 710065
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Abstract: |
In the paper, the welds of front dome shell were separately annealed and integrally annealed, these were studied by two process experiments. The effect of annealing times on microstructure, mechanical properties of joints and deformation of shell have been analyzed. The welding quality, the production efficiency and the cost were contrasted. The result revealed that annealing times had little effect on weld microstructure. The effect of annealing times on mechanical properties of joints could be ignored. Compared with separate annealing process, the process of continuous welding and integral annealing was better. It can guarantee the quality of welding for front dome shell. The production efficiency of welding was increased by 100%, meanwhile, the cost of per product was saved 140 yuan, and the labor intensity of operators was reduced. |
Key words: annealing times;front dome shell;microstructure;mechanical properties |