焊接作为一种能给生产带来高度技术经济效果的工艺过程,在国民经济一切部门中将一年比一年起着巨大的作用。谁都知道,中国在实现第一个五年计划的事业中,在促进各项生产技术的改进上,其中特别是对机器制造业和造船业,焊接已经成了一种最进步的工艺过程。十分明显,在胜利地完成第二十五年计划的事业中,焊 Welding, as a process that brings about a high degree of technical and economic effect on production, will play a huge role year after year in all sectors of the national economy. Everyone knows that in the cause of realizing the first five-year plan, China has promoted the improvement of various production technologies, among which the welding has become the most advanced process, especially in the machinery manufacturing and shipbuilding industries. Obviously, in the successful completion of the 25th year of the project, welding