Wire rod for 400mpa grade weather-resistant studs, production method and prepared studs

Abstract

The invention provides a wire rod for a 400 MPa level weatherproof cheese head stud for arc studwelding, a production method and a cheese head stud prepared by the production method. The wire rod comprises the following components in percentage by weight: 0.06-0.10% of C, 0.15-0.25% of Si, 0.30-0.50% of Mn, less than or equal to 0.020% of P, less than or equal to 0.015% of S, 0.02-0.06% of Al, 0.45-0.65% of Ni, 0.30-0.60% of Cr, 0.20-0.40% of Cu, 0.005-0.030% of Ti and the balance iron and inevitable impurities. The production method comprises the steps of smelting, continuous casting, billetheating, rolling, wire discharging and cooling. The cheese head stud produced by applying the low carbon steel wire rod has remarkable weather resistance, the yield strength is not lower than 400 MPa,and good welding performance is maintained at the same time.

Description

Technical field [0001] The invention belongs to the field of metal materials, and in particular relates to a wire rod for 400MPa weather resistant studs and a production method thereof. Background technique [0002] The stud is the abbreviation of the cheese head studs for arc studwelding (English Cheese head studs for arc studwelding), which belongs to a kind of high-strength rigid connection fasteners, used in various steel structure projects, in different connecting parts Plays the role of rigid combination connection, suitable for high-rise steel frame buildings, industrial plant buildings, highways, railways, bridges, towers, automobiles, energy, transportation facilities, airports, stations, power stations, pipeline supports, hoisting machinery and other Class steel structure and other projects. [0003] The current national standard for studs uses the national standard GB / T 10433-2002, which is suitable for shear parts, embedded parts and anchors of various structures in ci...

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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