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将UN1-75型对焊机改装成点焊机,实现了φ2.5mm圆丝的点焊,效果良好。改装时,原对焊机的初次级匝数及调节级数不变,拆除手动夹钳,装上脚踏式压紧机构、电极钳、电极和冷却水路。电极座采用φ65mm紫铜棒制做,伸出长度约900mm(根据工件确定)。上电极为φ40×250mm,下电极为40×150mm的青铜,电极行程为20～50mm。对焊机改装成点焊机后,工件由面接触变成点接触。为保证正常作业,采取了以下措
The UN1-75 on the welding machine refitted into a spot welding machine to achieve φ2.5mm round wire spot welding, the effect is good. When retrofitting, the original primary welder turns and the number of stages of adjustment unchanged, remove the manual clamp, fitted with a foot pressure mechanism, electrode clamp, electrodes and cooling water. Electrode holder made of φ65mm copper rods, extending length of about 900mm (according to the workpiece to determine). The upper electrode is φ40 × 250mm, the lower electrode is 40 × 150mm bronze, the electrode stroke is 20 ~ 50mm. After the welding machine refitted into spot welder, the workpiece from the surface contact into point contact. In order to ensure normal operation, take the following measures