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A kind of manufacturing method of 100mpa level low yield point building anti-seismic steel

A technology with low yield point and manufacturing method, which is applied in the field of steel production, can solve the problem of high cost of steel production process, and achieve the effect of increasing temperature

Active Publication Date: 2017-03-01
SHOUGANG CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides a manufacturing method of 100MPa level low yield point building anti-seismic steel to solve the technical problem of high cost in the existing steel production process

Method used

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  • A kind of manufacturing method of 100mpa level low yield point building anti-seismic steel
  • A kind of manufacturing method of 100mpa level low yield point building anti-seismic steel

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Embodiment 1

[0028] The manufacturing method of the 100MPa grade low yield point building anti-seismic steel related to the present invention, the chemical composition of the steel involved is calculated by mass percentage as follows:

[0029] C: ≤0.01%, Si: ≤0.02%, Mn: 0.05%~0.1%, Al: 0.01%~0.06%, P: ≤0.01%, S: ≤0.004%, N: ≤0.004%, Ti: 0.01% ~0.08%, the rest is Fe and unavoidable impurities.

[0030] preferred, see below figure 1 , the technical process (manufacturing method) of the 100MPa grade low yield point building anti-seismic steel comprises:

[0031] S101, molten steel is refined and then continuously cast to obtain a slab.

[0032] S102, heating the slab.

[0033] Preferably, in a specific implementation process, the heating of the slab specifically includes: heating the slab to 1050°C to 1100°C.

[0034] S103, performing rough rolling.

[0035] S104, heating by electromagnetic induction.

[0036] Preferably, in a specific implementation process, the heating by electromagne...

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Abstract

The invention discloses a manufacturing method of 100-MPa low-yield-point architectural antiseismic steel. The steel comprises the following chemical components in percentage by mass: at most 0.01% of C, at most 0.02% of Si, 0.05-0.1% of Mn, 0.01-0.06% of Al, at most 0.01% of P, at most 0.004% of S, at most 0.004% of N, 0.01-0.08% of Ti, and the balance of Fe and inevitable impurities. The method comprises the following steps: refining, continuous casting, heating, rough rolling, electromagnetic induction heating, finish rolling, laminar cooling, coiling and the like. The yield strength of the 100-MPa low-yield-point architectural antiseismic steel is up to 80-120 MPa, and the elongation percentage is greater than 50%; and the steel has the advantages of favorable plastic deformation, favorable impact toughness, lower alloy cost, practical technique, favorable weldability and favorable low cycle fatigue property.

Description

technical field [0001] The present application relates to the technical field of steel production, in particular to a method for manufacturing earthquake-resistant building steel with a low yield point of 100 MPa. Background technique [0002] Low yield point building seismic steel is mainly used for building dampers, which can effectively protect the main load-bearing structures and reduce the damage to buildings caused by vibration. These anti-seismic devices are subjected to earthquake loads before the main structural parts, and yield first, and absorb earthquake energy by repeated loads to protect the safety of the main structure of the building. Compared with other energy-consuming materials, it has the advantages of simple structure, economical and durable, convenient replacement after earthquake, and strong reliability. It can be used not only for the earthquake resistance of new buildings, but also for the improvement of the earthquake resistance of old buildings. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/14C21D8/02
Inventor 姚志强郭佳刘杰李飞崔阳朱国森
Owner SHOUGANG CORPORATION
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