Wire rod for 520mpa level weather-resistant studs, production method and prepared studs

A wire rod and weather-resistant technology, applied in the field of metal materials, can solve the problems of increased corrosion resistance gap, inability to transmit shear force, damage to building structures, etc., and achieve the effect of reducing strength requirements

CN110042299BActive 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 a steel wire rod for a 520MPa-grade weather-proof toggle pin, a production method, and the prepared toggle pin thereof. The steel wire rod is prepared from the following components in percentage by weight: 0.06 percent to 0.10 percent of C, 0.15 percent to 0.25 percent of Si, 0.65 percent to 0.85 percent of Mn, less than or equal to 0.020 percent of P, less than or equal to0.015 percent of S, 0.02 percent to 0.06 percent of Al, 0.45 percent to 0.65 percent of Ni, 0.30 percent to 0.60 percent of Cr, 0.20 percent to 0.40 percent of Cu, 0.04 to 0.07 percent of V, 0.005 percent to 0.030 percent of Ti, 0.25 percent to 0.45 percent of Mo, and the balance Fe and inevitable impurities. The production method comprises the steps of smelting, continuously casting, heating a steel billet, rolling, spinning and cooling the steel wire rod. The toggle pin produced by applying the steel wire rod has remarkable weather resistance, has the yield strength being not lower than 520MPa, and maintains a favorable welding performance at the same time.
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Description

technical field

[0001] The invention belongs to the field of metal materials, and in particular relates to a wire rod for 520MPa-level weather-resistant studs, a production method and the 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 is the national standard GB / T 10433-2002, 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 magnetic rings for wel...

Examples

Embodiment Construction

[0030] Below by embodiment the present invention will be further described.

[0031]The embodiment of the present invention carries out smelting-continuous casting-billet heating-rolling-spinning-wire rod cooling according to the component ratio of the technical solution; including smelting-continuous casting-slab heating-rolling-spinning-wire rod cooling; It is characterized in that;

[0032] (1) Steel billet heating: the steel billet cross-sectional dimension specification that produces wire rod adopts among the present invention is: (150mm~160mm) * (150mm~160mm), steel billet heating is always in furnace time 2.5~3 hours, soaking section temperature is at 950 ℃~1040℃;

[0033] (2) Rolling: the pre-finishing temperature of the rolled piece is controlled at 820 ° C ~ 840 ° C, and the temperature of entering the double module is 830 ° C ~ 850 ° C;

[0034] (3) Spinning: wire rod spinning diameter is 10.0mm~25.0mm, and the wire spinning temperature is required to be controlle...