Experience in the production of wire rods made of steel grade SV‑08G2S for the subsequent manufacture of welding wire

Abstract

Welding wire used for welding metal structures must have high technological and mechanical properties, since it is the main material that provides the required chemical composition and properties of the metal of the welded seam of structures. This article describes the experience of producing wire rods made of steel grade Sv‑08G2S for the subsequent production of welding wire in the conditions of OJSC “BSW – Management Company of Holding “BMC”. The technology of welding wire production in the conditions of mill 150 has been developed with heat treatment of the produced wire rod to give it the required plasticity and subsequent processing in hardware production into welding wire. With the construction of a new modern small‑grade wire mill 370/150, the developed technology of welding wire production has been improved to obtain maximum plasticity of the initial wire rod in order to exclude all types of additional heat treatment at the hardware conversion due to the choice of a rational chemical composition of steel and the formation of a favorable microstructure of metal. The wire rod obtained as a result of the work has been successfully processed in hardware production into copper‑plated welding wire without additional heat treatment.

Keywords

• welding wire
• steel sv‑08g2s
• bainite‑martensitic sections
• thermostating
• “stelmore” line
• heat‑insulating covers