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HRB400 rebar and production method thereof

A production method and steel bar technology, applied in the field of metallurgy, can solve problems such as high cost, poor mechanical strength, and unstable performance

Inactive Publication Date: 2016-07-20
INNER MONGOLIA BAOTOU STEEL UNION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing HRB400 steel bar has poor mechanical strength and unstable performance. In order to increase the strength of the steel bar, the existing technology also adopts rapid cooling and fine-grain strengthening to improve the strength of the steel bar, or there are methods to improve the strength of the steel bar through microalloying. But the cost is higher

Method used

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  • HRB400 rebar and production method thereof
  • HRB400 rebar and production method thereof
  • HRB400 rebar and production method thereof

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Embodiment Construction

[0019] The invention discloses a HRB400 steel bar and a production method thereof. Those skilled in the art can learn from the content of this article and appropriately improve the process parameters to realize it. In particular, it should be pointed out that all similar replacements and modifications are obvious to those skilled in the art, and they are all considered to be included in the present invention. The method and application of the present invention have been described through preferred embodiments, and the relevant personnel can obviously make changes or appropriate changes and combinations to the method and application described herein without departing from the content, spirit and scope of the present invention to realize and Apply the technology of the present invention.

[0020] The invention provides a HRB400 steel bar, which comprises: 0.19-0.25wt% of C, 0.55-0.80wt% of Si, 1.45-1.60wt% of Mn, 0.20-0.30wt% of Cr, and the balance of iron.

[0021] In the HRB4...

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Abstract

The invention relates to the field of metallurgy, and particularly discloses an HRB400 rebar and a production method thereof. The HRB400 rebar is prepared from 0.19 wt%-0.25 wt% of C, 0.55 wt%-0.80 wt% of Si, 1.45 wt%-1.60 wt% of Mn, 0.20 wt%-0.30 wt% of Cr and the balance iron. The HRB400 rebar has the advantages of being excellent and stable in mechanical property and low in cost.

Description

technical field [0001] The invention relates to the field of metallurgy, in particular to a HRB400 steel bar and a production method thereof. Background technique [0002] HRB400 is the grade of threaded steel bar stipulated in "Steel for Reinforced Concrete" GB1499.2-2007. Due to the wide range of standard components and the differences in production equipment and process control of manufacturers, the HRB400 hot-rolled ribbed steel bars produced by various manufacturers are different. The composition is different, and the production process of each steel factory is also different. The existing HRB400 steel bar has poor mechanical strength and unstable performance. In order to increase the strength of the steel bar, the existing technology also adopts rapid cooling and fine-grain strengthening to improve the strength of the steel bar, or there are methods to improve the strength of the steel bar through microalloying. But the cost is higher. Contents of the invention [...

Claims

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Application Information

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IPC IPC(8): C22C38/02C22C38/04C22C38/18C21D8/08
CPCC22C38/02C21D8/08C22C38/04C22C38/18
Inventor 吕刚戈春刚谭晓东
Owner INNER MONGOLIA BAOTOU STEEL UNION
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