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我厂为解决双头CO_2自动焊的焊接质量问题,要求焊机具备同步无级调压,以满足任意工作点的焊接参数。经试验采用双向可控硅交流调压的方案获得成功。两台交流调压的CO_2焊机从1980年投产使用至今,稳定应用,无元件损坏,保证了焊接质量的稳定。现将该焊机简介如下。电气原理 1.主回路焊接主回路(图1)由双向可控硅及其阻容保护环节A、B、C、R1、C1～C3,焊接变压器B4及整流器D1～D6组成。A、B、C、
Our factory solves the welding quality problem of double head CO_2 automatic welding, requires the welding machine to have the stepless stepless voltage regulation, in order to satisfy the welding parameter of any working point. After the test using bi-directional AC voltage regulator program was successful. Two AC voltage regulator CO_2 welding machine put into operation from 1980 until now, stable application, no component damage, to ensure the stability of welding quality. Now the welder profile is as follows. Electrical Principle 1. The main circuit of the main welding circuit (Figure 1) consists of bidirectional thyristor and its resistance-capacitance protection links A, B, C, R1, C1 ~ C3, welding transformer B4 and rectifier D1 ~ D6. A, B, C,