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提出了螺栓焊的新机理和螺栓设计原则。设计了电磁开关壳体螺栓焊的焊接模具；探讨了焊接工艺，工件表面状态对焊接质量和可靠性的影响与改进措施。
Proposed a new mechanism of bolt welding and bolt design principles. The welding mold of electromagnetic switch housing bolt welding was designed. The influence of welding process and workpiece surface condition on welding quality and reliability and the improvement measures were discussed.