Earthquake-resistant steel bar

A technology of anti-seismic steel bars and specifications, applied in the field of alloy steel, can solve the problems of large amount of ferroniobium, poor economic benefits, high production costs, etc., and achieve the effect of saving steel, reducing the amount of ferroniobium, and enhancing the anti-seismic performance

Inactive Publication Date: 2017-02-01
YUNNAN DESHENG STEEL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved and the technical task proposed by the present invention are to improve the existing technology, provide a kind of anti-seismic steel bar, and solve the problems of high consumption of ferroniobium in the anti-seismic steel bar in the current technology, high production cost and poor economic benefit

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Embodiment Construction

[0016] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0017] An anti-seismic steel bar disclosed in an embodiment of the present invention adjusts the composition of the steel bar, reduces the amount of ferroniobium, meets the requirements of mechanical properties, reduces production costs, and improves economic benefits.

[0018] The mechanical properties of the existing steel bars of various sizes and specifications are rich, and the amount of microalloy can be adjusted to reduce the production cost under the premise that the m...

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Abstract

The invention discloses an earthquake-resistant steel bar. The earthquake-resistant steel bar is characterized by being prepared from, by weight percent, 0.21%-0.24% of C, 0.45%-0.55% of Si, 1.45%-1.55% of Mn, 0.018%-0.032% of Nb, not larger than 0.045% of P, not larger than 0.045% of S and the balance Fe and impurity elements. According to the earthquake-resistant steel bar, under the condition of guaranteeing that the need of the mechanical property is met, different element composition proportions are adopted according to different diameter specifications, the niobium content is reduced, and therefore the use level of niobium and iron is reduced, the production cost is reduced, and economic benefits are improved.

Description

technical field [0001] The invention relates to the technical field of alloy steel, in particular to an anti-seismic steel bar. Background technique [0002] The ratio of the measured maximum strength value to the tensile yield strength (strength-yield ratio) of the longitudinally stressed steel bar is not less than 1.25, so that after a large plastic deformation occurs in a certain part of the structure, the steel bar still has the necessary strength potential, that is, there is enough plastic stranding. The rotation capacity and energy dissipation capacity of the steel bar should be guaranteed to ensure the basic seismic bearing capacity of the component; the ratio of the measured value of the tensile yield strength of the steel bar to the standard value of the tensile strength of the steel bar (yield strength ratio) should not be greater than 1.3, mainly to ensure that the "strong column weak beam ", the design requirements of "strong shear and weak bending" will not be a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/04C22C38/02C22C38/12C22C38/60C21D8/08
CPCC22C38/04C21D8/08C22C38/02C22C38/12C22C38/60
Inventor 张华陈云刘德斌陈劲松沈绍波肖必伟段建波
Owner YUNNAN DESHENG STEEL CO LTD
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