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High vibration resistance construction structural steel and production process thereof

A technology of building structure and production process, which is applied in the field of high-seismic building structural steel and its production process, can solve problems such as difficult to meet seismic requirements, and achieve the effect of short cycle, simple process and strong seismic performance

Inactive Publication Date: 2018-03-02
YANAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Difficult to meet high-level seismic requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The high-seismic building structural steel provided by the present invention comprises the following components and weight ratio:

[0023] C: 0.18~0.35%, Si: 0.15~0.50%, Mn: 1.35~1.55%, P: ≤0.015%, S: ≤0.015%, P+S≤0.025%, Nb: 0.03~0.055%, Cr: 0.20 ~1.30%, Mo: 0.10~0.20%, Ni: 0.20~0.50%, Cu: 0.1~0.2%, W: 0.05~0.12%, B: 0.0015~0.0025%, Co: 0.01~0.015%, the rest is Fe and unavoidable impurities.

[0024] The production technology of the high earthquake-resistant building structural steel provided by the invention comprises the following steps:

[0025] 1) Get the component materials of the following weight ratio:

[0026] C: 0.18~0.35%, Si: 0.15~0.50%, Mn: 1.35~1.55%, P: ≤0.015%, S: ≤0.015%, P+S≤0.025%, Nb: 0.03~0.055%, Cr: 0.20 ~1.30%, Mo: 0.10~0.20%, Ni: 0.20~0.50%, Cu: 0.1~0.2%, W: 0.05~0.12%, B: 0.0015~0.0025%, Co: 0.01~0.015%, the rest is Fe and unavoidable impurities;

[0027] Using the electric furnace + vacuum degassing smelting process, first melt the above-m...

Embodiment 2

[0033] On the basis of Example 1, the high-seismic building structural steel includes the following components and weight ratio:

[0034] C: 0.25%; Si: 0.20%, Mn: 1.40%, P: ≤0.010%, S: ≤0.010%, Nb: 0.04%, Cr: 0.40%, Mo: 0.15%, Ni: 0.30%, Cu: 0.12 %, W: 0.08%, B: 0.0018%, Co: 0.012%, and the rest are Fe and unavoidable impurities.

[0035] The specific process steps are:

[0036] 1) Using the electric furnace + vacuum degassing smelting process, first melt the above-mentioned component materials in the electric furnace, start slagging and dephosphorization at 1540°C, use a large amount of slag, and operate with slag flow; after dephosphorization, carry out slag removal and reduction, Alkaline reducing slag is produced; then desulfurization operation is carried out, and when the temperature reaches 1630°C, steel tapping begins; molten steel enters the refining furnace, slag forming is heated, and vacuum blowing operation is carried out at the same time for further desulfurizati...

Embodiment 3

[0042] On the basis of Example 1, the high-seismic building structural steel includes the following components and weight ratio: C: 0.30%; Si: 0.30%, Mn: 1.50%, P: ≤0.010%, S: ≤0.010% , Nb: 0.05%, Cr: 1.00%, Mo: 0.18%, Ni: 0.45%, Cu: 0.15%, W: 0.10%, B: 0.0020%, Co: 0.014%, and the rest are Fe and unavoidable impurities.

[0043] The specific process steps are:

[0044] 1) Using the electric furnace + vacuum degassing smelting process, first melt the above-mentioned component materials in the electric furnace, start slagging and dephosphorization at 1540°C, use a large amount of slag, and operate with slag flow; after dephosphorization, carry out slag removal and reduction, Alkaline reducing slag is produced; then desulfurization operation is carried out, and when the temperature reaches 1630°C, steel tapping begins; molten steel enters the refining furnace, slag forming is heated, and vacuum blowing operation is carried out at the same time for further desulfurization and deg...

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Abstract

The invention discloses a high vibration resistance construction structural steel and a production process thereof. The steel comprises, by weight, 0.18-0.35% of C, 0.15-0.50% of Si, 1.35-1.55% of Mn,no more than 0.015% of P, no more than 0.015% of S, no more than 0.025% of P and S, 0.03-0.055% of Nb, 0.20-1.30% of Cr, 0.10-0.20% of Mo, 0.20-0.50% of Ni, 0.1-0.2% of Cu, 0.05-0.12% of W, 0.0015-0.0025% of B, 0.01-0.015% of Co, and the balance Fe. The high vibration resistance construction structural steel is high in vibration resistance performance, high in stretchability, high in strength grading, and high in toughness; the higher degree of vibration resistance requirements can be met; the production process is simple; the construction cost is low; and the high vibration resistance construction structural steel is suitable for large-scale promotion and application in high-rise buildings.

Description

technical field [0001] The invention relates to the field of high-seismic building steel and its manufacturing process, in particular to a high-seismic building structural steel and its production process. Background technique [0002] With the development of high-rise and large-scale modern buildings, more and more attention has been paid to the anti-seismic performance of buildings, which puts forward higher requirements for the performance of building structure materials. With the frequent occurrence of earthquakes in recent years, the seismic performance of steel has attracted much attention. Structural steel with high strength and excellent seismic performance not only guarantees the requirements of engineering construction, but also ensures the high safety of steel. In the prior art, there are many reports about earthquake-resistant building structural steel, but generally the yield strength ratio of the steel is higher than 0.85, that is, the seismic performance is p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/18C22C33/04C22C38/02C22C38/04C22C38/42C22C38/44C22C38/48C22C38/52C22C38/54C22C38/58
CPCC22C38/54C21D1/18C22C33/04C22C38/02C22C38/04C22C38/42C22C38/44C22C38/48C22C38/52C22C38/58
Inventor 霍治澎杨虎城
Owner YANAN UNIV
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