盘条焊接操作方法的改进

高碳钢丝拉拔过程容易产生断丝,通过试验总结出盘条焊接操作新方法。(1)端头准备:用砂轮机将切头处毛刺去除干净,并进行长度为2 mm的45°倒角处理;(2)对焊:在材质相同的条件下依据被焊接材料的尺寸、规格选择不同的电流,以保证合适的焊接温度;(3)焊缝隆起清除:在环境温度下自然冷却至80℃以下,焊缝处打磨后的直径应不小于盘条原始直径的95%。给出焊接回火的4步操作法。采用新的焊接方法,提高了盘条焊接质量,盘条的断面收缩率在10%～20%,抗拉强度达到母材抗拉强度的85%～95%,拉丝的断头次数由原来的每百吨2.50次下降到1.16次。

Improvement of wire rod welding operation method

High carbon steel wire broken occurs easily in process of wire drawing,wire rod welding operation new method was summarized by testing.(1) prepare the end,to cut the burr of the end with grinding machine,and done 45°chamfering treatment of length 2 mm,(2) welding,to choose different current according to the size and specification of welding material in condition of same materials,to ensure proper welding temperature,(3) to remove welding joint,air cooling to under 80 ℃ at room temperature,the welding joint diameter after polishing is no less than 95% of wire rod diameter.The four step operation method of welding tempering is given.To adopt new welding method improves wire rod welding quality,area reduction of wire rod is 10%-20%,tensile strength reaches 85%-95% of that of base material,the broken time each 100 ton of wire drawing decreases from original 2.50 times to 1.16 times.