当谈到制造业，机械加工工艺是不可或缺的环节。机械加工工艺是将原始材料转化为所需形状、尺寸和表面质量的过程，涵盖了多种精密加工方法，以满足不同零件的需求。

Among the various methods of joining metal structures, welding occupies an irreplaceable central position. A welded joint is defined as a component or structure formed by heating, applying pressure, or a combination of both, to achieve a permanent bond at the atomic level between two or more separate metal components.