High-performance refractory weather-resisting building steel and its production method

A technology of fire-resistant and weather-resistant steel for construction, which is applied in the field of low-alloy steel manufacturing, can solve the problem of lack of requirements for weather resistance, and achieve the effects of high Z-direction performance, excellent welding performance, and low steel cost.
CN1354273AInactive Publication Date: 2002-06-19武钢集团有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
武钢集团有限公司
Publication Date
2002-06-19
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The present invention relates to a high-performance fire-resistant weather-resisting building steel and its production method. Said invention steel contains C, Si, Mn, P, S, Mo, Ti, Al, N, O, Cr, Ni, Cu, Ca, B and one or more than one kind of Nb, V and RE and the rest is Fe. After having been undergone the processes of smelting, rolling and heat treatment, said building steel possesses high strenght, high toughness and excellent fire-resisting and weather-resisting properties. The building steel can be used for providing various steel structural members whose thickness is 4-100 mm in the fields of building, civil engineering and marine structure. Under the large linear energy (50-100 kJ / cm) welding condition of gas-arc welding, electroslag welding and high-frequency resistance welding, its heat affected zone (HAZ) still possesses excellent toughness so as to greatly raise welding efficiency of engineering structure and reduce its manufacture cost.
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Description

【Technical field】

[0001] The invention relates to a high-performance fire-resistant and weather-resistant building steel and a production method thereof, belonging to the field of low-alloy steel manufacturing. 【Background technique】

[0002] Before the present invention, such as the Japanese Patent Laid-Open No. 5-279735 patent published in 1993 "The production method of fire-resistant steel plates for construction with excellent toughness in the heat-affected zone of large heat input welding", the steel involved in this patent can withstand large heat input welding, and can To meet the requirements of fire resistance, its shortcoming is that there is no requirement for weather resistance. In addition, according to the requirements of this patent, only steel plates with a thickness of more than 50 mm can be produced, but no steel plates with a thickness of less than 50 mm are involved. 【Content of invention】

[0003] The purpose of the present invention is to provide a h...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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