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Quake-proof and corrosion-resistant H-shaped steel with high performance and processing method thereof

A processing method and technology of H-beam, applied in the field of metal material processing and forming, can solve the problem that H-beam cannot meet the high strength of earthquake resistance, corrosion resistance, weather resistance, etc. low stress effect

Active Publication Date: 2014-05-21
WUKUN STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The H-shaped steel produced by the existing technology cannot meet the requirements

Method used

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  • Quake-proof and corrosion-resistant H-shaped steel with high performance and processing method thereof

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Experimental program
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Effect test

Embodiment 1

[0041] The high-performance anti-shock and corrosion-resistant H-shaped steel has the following chemical composition in weight percentage: C 0.10wt%, Si 0.25wt%, Mn 1.00wt%, Ti 0.030wt%, Cr 0.10wt%, Cu 0.30wt%, B 0.0020 wt%, S 0.020 wt%, P 0.035 wt%, the rest is Fe and unavoidable impurities. Processed through the following processes, billet section: 320mm×410mm:

[0042] Described molten steel smelting is molten iron (chemical composition C 4.0wt%, Si 0.30wt%, Mn 0.35wt%, P 0.100wt%, S0.020wt%, the rest is Fe and unavoidable impurity), steel scrap ( Chemical composition C 0.20wt%, Si 0.30wt%, Mn 0.30wt%, P 0.030wt%, S 0.025wt%, the rest is Fe and unavoidable impurities) and pig iron (chemical composition C 3.0wt%, Si 0.50 wt%, Mn 0.40wt%, P 0.090wt%, S 0.020wt%, and the rest are Fe and unavoidable impurities) into the LD converter, and at the same time add copper plates (chemical composition Cu 99.3wt%, the rest is Fe and unavoidable impurity), and then carry out convention...

Embodiment 2

[0057] The high-performance anti-shock and corrosion-resistant H-shaped steel has the following chemical composition in weight percentage: C 0.12 wt%, Si 0.35 wt%, Mn 1.20 wt%, Ti 0.040 wt%, Cr 0.15 wt%, Cu 0.40 wt%, B 0.0030 wt%, S 0.016 wt%, P 0.031 wt%, the rest is Fe and unavoidable impurities; processed by the following procedures, billet section: 320mm×410mm:

[0058] Described molten steel smelting is that molten iron (chemical composition C 4.3wt%, Si 0.48wt%, Mn 0.52wt%, P 0.160wt%, S0.017wt%, the rest are Fe and unavoidable impurities), steel scrap ( Chemical composition C 0.20wt%, Si 0.44wt%, Mn 0.39wt%, P 0.038wt%, S 0.034wt%, the rest is Fe and unavoidable impurities) and pig iron (chemical composition C 3.0wt%, Si 0.68 wt%, Mn 0.59 wt%, P 0.107 wt%, S 0.034 wt%, the rest is Fe and unavoidable impurities) into the LD converter, and at the same time add copper plate (chemical composition Cu 99.3wt%, and the rest is Fe and unavoidable impurities), and then carry ou...

Embodiment 3

[0072] The high-performance anti-shock and corrosion-resistant H-shaped steel has the following chemical composition in weight percentage: C 0.15 wt%, Si 0.50 wt%, Mn 1.35 wt%, Ti 0.050 wt%, Cr 0.20 wt%, Cu 0.50 wt%, B 0.0040 wt%, S 0.014 wt%, P 0.033 wt%, the rest is Fe and unavoidable impurities; processed by the following procedures, billet section: 320mm×410mm:

[0073] Described molten steel smelting is molten iron (chemical composition C 4.5wt%, Si 0.60wt%, Mn 0.60wt%, P 0.200wt%, S 0.015wt%, the rest is Fe and unavoidable impurity), steel scrap ( Chemical composition C 0.40wt%, Si 0.60wt%, Mn 0.60wt%, P 0.045wt%, S 0.040wt%, the rest is Fe and unavoidable impurities) and pig iron (chemical composition C 4.0wt%, Si 0.80 wt%, Mn 0.70 wt%, P 0.120wt%, S 0.045wt%, the rest is Fe and unavoidable impurities) into the LD converter, and at the same time add copper plates (chemical composition Cu 99.3wt%, and the rest is Fe and unavoidable impurities), followed by conventional ...

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Abstract

The invention discloses quake-proof and corrosion-resistant H-shaped steel with high performance and a processing method thereof. The H-shaped steel comprises the following components by weight percent: 0.10-0.15wt% of C, 0.25-0.50wt% of Si, 1.00-1.35wt% of Mn, 0.030-0.050wt% of Ti, 0.10-0.20wt% of Cr, 0.30-0.50wt% of Cu, 0.0020-0.0040wt% of B, no more than 0.020wt% of S, no more than 0.035wt% of P, and the balance of Fe and inevitable impurities. The H-shaped steel is processed into the H-shaped steel of which the height, the width, the web thickness and the physical dimension of a flange thickness section respectively are (400-294mm)*(200-175mm)*(7-8mm)*(11-13mm) by the following procedures: heating, descaling, performing, selective cooling of the flange outer side, finish rolling, R-angle selective cooling, natural cooling, online detection, and straightening. The yield strength Rel is 420-480 MPa; the tensile strength Rm is 580-650MPa, the elongation rate A> is 24.0%, the V-shaped ballistic work Akv is greater than or equal to 70J, the salt-spray corrosion rate of 0.5% NaCl is smaller than 0.50g.m<-2>.h<-1>. The produced product is high in strength, excellent in anti-seismic property, corrosion-resistant, good in weather fastness and excellent in overall performance. The method disclosed by the invention has the advantages of being low in production cost, high in efficiency, strong in operability and generalization performance and the like.

Description

technical field [0001] The invention belongs to the technical field of metal material processing and forming, and in particular relates to an anti-seismic and corrosion-resistant high-performance H-shaped steel and a processing method thereof. Background technique [0002] Hot-rolled H-shaped steel is a kind of steel with relatively economical cross-section. It has excellent mechanical properties. It is an economical, efficient and environmentally friendly steel product. It can be widely used in large bridges, high-rise buildings and industrial plants that require large bearing capacity and good stability. , Large-scale electric power, water conservancy construction, highways and vehicles, ship load-bearing beams, pillars of subways and overpasses, etc. With the rapid development of China's economic construction, steel for building structures, steel for automobiles and railways all show a rapid growth trend, and most parts of China are located in earthquake-prone areas, with...

Claims

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Application Information

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IPC IPC(8): C22C38/32C22C33/04C21D8/00
Inventor 庾郁梅陈伟赵宇苏灿东肖华强张卫强文玉兵张为亮
Owner WUKUN STEEL
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