钢轨直流闪光焊主电路设计  

Design of main circuit for direct current rail flash butt welding

作　　者：翟建楠[1] 吕其兵[1] 田海[1] 

机构地区：[1]西南交通大学焊接研究所,四川成都610031

出　　处：《电焊机》2008年第8期13-15,共3页Electric Welding Machine

摘　　要：基于钢轨直流闪光焊工艺要求焊接设备具有输出电流大、电压低和输出功率大的特点,对比分析了五种晶闸管调压整流主电路,分别计算了晶闸管上流过的电流和承受的反电压、变压器上流过的电流、二次侧整流二极管上的电流,根据晶闸管、变压器和整流二极管在各种主电路中的工作条件、生产制造的难易等进行综合分析,得到了适合于钢轨闪光焊直流焊接设备的主电路。On the basis of the characteristics of high outputting electric current, low voltage and high output power of the rail direct current flash butt welding, five thyristor rectifier circuits had been contrasted and analysed.The electric current and counter voltage of thyristor,the electric current of transformer and sub rectifier valve in one cycle were computed, according to the working conditions and difficulty in production of the thyristor,transformer and rectifier valve in the various main circuit,the best main circuit which was fit for direct current flash butt welding machine had been found out.

关 键 词：直流闪光焊 主电路 晶闸管 

分 类 号：TG456[金属学及工艺—焊接] U213.92[交通运输工程—道路与铁道工程]