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近年来,随着锅炉和压力容器制造工业的飞速发展,厚板焊接的质量问题也越来越引起了人们的重视。尤其当前,手工焊接与自动焊接缺一不可的情况下,我们更要分别研究它们各自的焊接特点,才能进而保证焊接质量的不断提高。而手工焊接的特点之一恰是它存在有接头,这也正是手工焊的一大弱点。以往,人们对此常常重视不够,一些介绍焊接工艺的书中又偏于强调接头清渣,忽略或很少言及温度变化对接头质量的重要影响。因此,本文就谈一谈自己在焊接实践
In recent years, with the rapid development of boilers and pressure vessel manufacturing industry, the quality of heavy plate welding has drawn more and more attention. Especially at present, manual welding and automatic welding are indispensable cases, we have to study their respective welding characteristics, in order to further ensure the continuous improvement of welding quality. One of the characteristics of manual welding is precisely the existence of joints, which is a major weakness of hand welding. In the past, people often did not pay enough attention to this. Some books on welding process emphasize on slag cleaning, neglect or little talk about the important influence of temperature on joint quality. Therefore, this article will talk about their own welding practice