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S771焊剂系用锰矿、萤石、石英砂等为主要原料,经电炉熔炼、粒化、干燥、过筛等过程而得的高锰高硅焊剂。主要用于低碳钢及低合金结构钢的埋伏自动焊接,适于锅炉、压力容器、船舶、桥梁及输油输气管材的高速埋伏焊管生产。根据标准要求,生产高锰型焊剂,所用原料锰矿,必须含Mn≥49％,Fe_2O_3≤2.0％,S≤0.15％,P_2O_5≥0.46％,才能得到高质量的产品。我国由于缺乏这类锰资
S771 flux system with manganese ore, fluorite, quartz sand as the main raw material, the electric furnace smelting, granulation, drying, sieving and other processes derived from the high-manganese high-silicon flux. Mainly used for low-carbon steel and low-alloy structural steel automatic ambush welding, suitable for boilers, pressure vessels, ships, bridges and pipelines for the production of high-speed ambush pipe. According to the standard requirements, the production of high-manganese flux, manganese ore used raw materials, must contain Mn ≥ 49%, Fe_2O_3 ≤ 2.0%, S ≤ 0.15%, P_2O_5 ≥ 0.46% in order to get high-quality products. Due to the lack of such manganese resources in our country