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在钢筋加工中,冷拉是一项很重要的工序。钢筋通过冷拉,一方面进行了冷加工,达到提高钢筋强度和节约钢材的效果;另一方面冷拉后可以把弯曲的钢筋拉直,钢筋表面的氧化铁皮自动脱落,起到了调直除锈的作用。以前,钢筋冷拉都是用卷扬机完成,卷扬机冷拉的速度相当慢,一小时只能拉60根左右。随着任务不断增大,冷拉就成了钢筋加工的薄弱环节,经常供不应求。重庆市
Cold drawing is a very important process in the processing of steel bars. The steel bars are cold-drawn and cold-worked on the one hand to increase the strength of the steel bars and the effect of saving steel materials. On the other hand, the steel bar can be straightened after the cold drawing, and the iron oxide skin on the surface of the steel bar is automatically detached, and the steel rust is straightened and removed. effect. In the past, cold-rolling of steel bars was accomplished using winches. The speed of drawing cold-rolling machines was very slow, and only about 60 can be pulled in one hour. As the task continues to increase, cold-drawn steel has become a weak link in the processing of steel bars, often in short supply. Chongqing