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前言便携式电焊机,是近几年在我国出现的新事物。随着各地农机修造站、小型企业和高空、流动作业等特殊环境的需要日益迫切,各有关单位对此项工作的研究、试制也在迅速展开。有的制成单机自用,有的则已定型并小批量投产,在实践中积累了很多的经验。我校工厂从去年起也开始这方面的试制工作,经不断征求使用单位意见,先后进行了七次改进,现简单介绍下列三种:
Foreword Portable welding machine, is a new thing in our country in recent years. As the needs of agricultural mechanization repair stations, small-scale enterprises, and special environments such as high altitude and mobile operations are increasingly pressing, the research and trial production of this work by various relevant agencies are also rapidly proceeding. Some made stand-alone for use, while others have been stereotyped and put into operation in small quantities, in practice has accumulated a lot of experience. Since last year, the factory of our school has also started trial production in this area. After continuously soliciting the opinions of the users, it has carried out seven improvements successively, and now it briefly introduces the following three kinds: