Economical 460mpa class weather-resistant wire rod for studs, production method and studs

Abstract

The invention provides an economical 460 MPa-grade weather-proof stud steel wire rod, a production method and a stud. The steel wire rod comprises compositions including, by weight, 0.02%-0.06% of C,0.15%-0.25% of Si, 1.05%-1.25% of Mn, not larger than 0.020% of P, not larger than 0.015% of S, 0.02%-0.06% of Al, 0.25%-0.45% of Ni, 0.30%-0.60% of Cr, 0.20%-0.40% of Cu, 0.01%-0.04% of V, 0.005%-0.030% of Ti, 0.10%-0.25% of Mo and the balance iron and unavoidable impurities. The production method comprises the steps of smelting, continuous casting, billet heating, rolling, spinning and steel wire rod cooling. The stud produced by the steel wire rod has the remarkable weather resistance, the yield strength is not less than 460 MPa, and the good welding performance is maintained.

Description

technical field [0001] The invention belongs to the field of wire products, and in particular relates to an economical 460MPa grade weather-resistant wire rod for studs, a production method and the prepared studs. Background technique [0002] Studs are short for arc stud welding cylindrical head welding studs (English Cheese head studs for arc studwelding). It acts as a rigid combined connection and is suitable for high-rise steel structure buildings, industrial plant buildings, roads, railways, bridges, towers, automobiles, energy, transportation facilities, airports, stations, power stations, pipe supports, hoisting machinery and other various Class steel structure and other projects. [0003] The current national standard for studs uses the national standard GB / T10433-2002, which is suitable for shear parts, embedded parts and anchors of various structures in civil engineering. GB / T10433-2002 non-equivalent adopts the international standard ISO13918: 1998 "Studs and ma...

AI Technical Summary

Problems solved by technology

However, with the continuous expansion of the use of weathering steel materials in recent years, the stud material is facing new problems

After the base metal is replaced by weathering steel, the gap between the corrosion resistance of the base metal and the stud increases. With the prolongation of the service time, the damage will inevitably occur from the joint between the stud and the base metal. If the connection between the stud and the base metal If it is destroyed, the shear force between different connectors cannot be transmitted, which will inevitably lead to the destruction of the entire building structure

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