一、冷拔工艺Ⅲ级普通低合金钢丝系由中国建筑科学研究院房屋预应力室与首钢共同开发而成,可在钢厂或加工厂采用25MnSiφ6.5盘条,经二道冷拔而成φ_25钢钢丝。除工厂化冷拔外,我们在试验冷拔丝的时候,利用原有的冷拔设备,并仿照低碳冷拔钢丝的工艺流程,即可试制成功,也就是说,25MnSi钢筋的冷拔工艺与低碳冷拔钢丝可完全套用。现将有关情况简介如下。 First, cold-drawing grade III low-alloy steel wire was jointly developed by the Chinese Academy of Building Research’s housing prestressing room and Shougang. 25MnSiφ6.5 wire rods can be used in steel mills or processing plants. Φ_25 steel wire. In addition to factory cold drawing, when we test cold wire drawing, we can use the original cold drawing equipment and follow the process flow of low carbon cold drawing steel wire to make a successful test, that is, the cold drawing process of 25MnSi steel bar. Low-carbon cold drawn steel wire can be completely applied. The brief introduction of the situation is as follows.