Ultra low silicon welding rod steel continuous casting production process

• Main Authors: QIUMIN LI, HUAIAN SUN, HONG LEI
• Format: Patent
• Language: English
• Published: 12.11.2003
• Edition: 7
• Subjects: CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; CHEMISTRY; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; METALLURGY OF IRON; PERFORMING OPERATIONS; POWDER METALLURGY; PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL; SOLDERING OR UNSOLDERING; TRANSPORTING; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS; WELDING; WORKING BY LASER BEAM

The continuously-casting production process of conventional welding electrode steel includes the following procedures: molten iron preparation, converter charging, converter smelting, deoxidization alloying, external refining and continuous casting. In the deoxidization alloying procedure, according to the total weight of molten iron the following deoxidizing agents are added, the calcium carbide, titanium-ion alloy and silicon-calcium alloy, etc. are added into the ladle, and the aluminium-manganese-iron alloy is added into the converter. Said invention implements of continuous coating production of ultralow silicon welding electrode steel, and its silicon content is less than 0.035.