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

An economical, wire rod technology, applied in the field of wire products, can solve the problems of building structure damage, shear force cannot be transmitted, and the gap in corrosion resistance increases, and achieve the effects of low cost, reduced strength requirements, and significant weather resistance

CN109852889BActive Publication Date: 2021-01-08ANGANG STEEL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2021-01-08

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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.
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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...

Examples

Embodiment Construction

[0029] Below by embodiment the present invention will be further described.

[0030] In the embodiment of the present invention, according to the component ratio of the technical solution, smelting-continuous casting-slab heating-rolling-spinning-wire rod cooling is carried out;

[0031] (1) Steel billet heating: The steel billet cross-sectional size specification that the present invention produces wire rod adopts is: (150mm~160mm) * (150mm~160mm), steel billet heating always takes 2.5~3 hours in the furnace time, and soaking section temperature is at 950 ℃ ~1040°C;

[0032](2) Rolling: the pre-finishing temperature of the rolled piece of the present invention is controlled at 840°C to 860°C, and the temperature of entering the double module is 850°C to 870°C;

[0033] 3) Spinning: wire rod spinning diameter is 10.0mm-25.0mm, and the wire spinning temperature is required to be controlled at 830°C-850°C;

[0034] 4) Wire rod cooling: After spinning, the wire rod is cooled by...