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某轧钢厂的焊管车间是我国焊接钢管的重要生产基地之一,年产量达30万吨。多年来,该厂的高频焊管机输出次级线圈寿命短,是老大难问题。为因该线圈工作条件相当恶劣,其输出电流达到四、五千安培,要求有良好的导电性,由于不能过热,因此要有内部水冷系统,而且不能泄漏。另外工作当中要经受以每分钟四、五十米高速运动的钢管的磨擦拉扯作用,这
Welded pipe plant in a rolling mill is one of the important production bases of welded steel pipe in our country with an annual output of 300,000 tons. Over the years, the plant’s high-frequency welding machine output secondary coil life is short, is the crux of the problem. Due to the poor working conditions of the coil, the output current of four or five thousand amperes, requires good electrical conductivity, due to not overheating, so have an internal water cooling system, and can not leak. In addition, the work to be subjected to the friction pull of steel pipe at a speed of 40 to 50 meters per minute, which