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A kind of low temperature resistant h-beam and its production process

A production process, the technology of H-shaped steel, applied in the field of steel preparation, can solve the problems of increased cost, unfavorable use, etc., and achieve the effects of increasing strength, improving hardenability, and improving welding performance

Active Publication Date: 2022-05-03
ANHUI KINGYOUNG STRUCTURAL METAL WORK
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention patent with the patent number CN101255527A discloses a boron-added H-shaped steel with good low-temperature impact toughness and its preparation method. The composition weight percentage of this invention steel is: C0.08-0.20%, Mn1.00-1.60%, Si0. 10~0.55%, P≤0.025%, S≤0.025%, Nb0.015~0.035%, B0.0005~0.0012%, the balance is iron and trace impurities, but the cost of the product is increased due to the addition of B. The C content in H-beam is high, and the ductile-brittle transition temperature of the steel increases with the increase of C content, which is not conducive to the use in low temperature environment

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  • A kind of low temperature resistant h-beam and its production process
  • A kind of low temperature resistant h-beam and its production process
  • A kind of low temperature resistant h-beam and its production process

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Embodiment Construction

[0041] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0042] see Figure 1-6 As shown, a low temperature resistant H-beam and its production process, the weight percentages of the chemical components of the low-temperature resistant hot-rolled H-beam are: C0.05-0.11%, Si0.20-0.35%, Mn1.05-1.30% , P≤0.010%, S≤0.015%, Nb0.020~0.035%, Ti0.005~0.025%, V0.02~0.05%, niobium 0.03~0.05%, the rest are iron and trace impurities, the above low temperature resistant H-beam steel Made by the followi...

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Abstract

The invention discloses a low-temperature-resistant H-shaped steel and a production process thereof. The chemical composition percentages by weight of the low-temperature-resistant hot-rolled H-shaped steel are: C0.05-0.11%, Si0.20-0.35%, Mn1.05-1.30%, P≤0.010%, S≤0.015%, Nb0.020~0.035%, Ti0.005~0.025%, V0.02~0.05%, niobium 0.03~0.05%, and the rest are iron and trace impurities. Hot metal pretreatment, converter smelting, LF refining, continuous casting, hot rolling, and then slowly cooling the continuous casting slab obtained after the continuous casting, heating and soaking the continuous casting slab, the continuous casting slab is subjected to rough rolling, After finishing rolling, hot-rolled H-shaped steel is obtained; S6. After correcting the hot-rolled H-shaped steel obtained in S5, the hot-rolled H-shaped steel is cut into H-shaped finished products of equal length through a cutting and grinding device.

Description

technical field [0001] The invention relates to the technical field of steel preparation, in particular to a low temperature-resistant H-shaped steel and a production process thereof. Background technique [0002] H-beam steel for low temperature resistant structure is mainly used in buildings, ships, bridges, power station equipment, water conservancy, energy, chemical industry, lifting and transportation machinery and other high-load steel structures in alpine regions. The characteristics of impact resistance under low temperature conditions. [0003] The invention patent with the patent number of CN101255527A discloses a boron-added H-beam steel with good low temperature impact toughness and a preparation method thereof. The weight percentages of the invention steel are: C0.08-0.20%, Mn1.00-1.60%, Si0. 10~0.55%, P≤0.025%, S≤0.025%, Nb0.015~0.035%, B0.0005~0.0012%, the balance is iron and trace impurities, but due to the addition of B, the cost of the product is increased...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/12C22C38/14C22C38/02C22C38/04B23P15/00
CPCC22C38/12C22C38/14C22C38/02C22C38/04B23P15/00
Inventor 章阳
Owner ANHUI KINGYOUNG STRUCTURAL METAL WORK