在推广CO_2焊接过程中,遇到的主要问题是送丝系统经常发生故障。例如,使用GD-200型焊机,用φ0.8—1.2mm焊丝对薄板进行焊接,采用拉丝式送丝。在使用中发现,这种送丝方式有以下几个缺点:①焊枪太重,工人不愿用;②焊丝盘太小,焊接辅助时间太长;③调节焊丝伸出长度不方便;④送丝机构容易出毛病。为解决这些问题,采取了以下措施:①自制供丝机,多备焊丝盘,尽量减少焊丝准备时间;②对于批量生产的产品,制作工夹具, In the promotion of CO_2 welding process, the main problem encountered is frequent wire feed system failure. For example, the use of GD-200-type welder, with φ0.8-1.2mm wire welding the sheet, the use of wire drawing wire. Found in the use of this wire feeding method has the following disadvantages: ① torch is too heavy, the workers do not want to use; ② wire plate is too small, welding auxiliary time is too long; ③ adjust the length of wire inconvenient; ④ wire feed Institutions prone to problems. To solve these problems, the following measures have been taken: ① self-made wire feeder, more wire plate, try to minimize wire preparation time; ② for mass production of products, the production fixture,