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A converter smelting process of hrb400ce corrosion-resistant steel

A converter smelting and corrosion-resistant steel technology, which is applied in iron and steel manufacturing processes, process efficiency improvement, metal processing, etc., can solve the problems of low smelting efficiency and achieve the effect of improving smelting efficiency and decarbonization efficiency

Active Publication Date: 2022-08-05
福建三宝钢铁有限公司
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Problems solved by technology

[0003] Therefore, the present invention provides a converter smelting process for HRB400cE corrosion-resistant steel to overcome the problem of low smelting efficiency caused by the inability to effectively decarburize molten steel with different carbon contents in the prior art

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  • A converter smelting process of hrb400ce corrosion-resistant steel

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Embodiment Construction

[0066] In order to make the purpose and advantages of the present invention clearer, the present invention will be further described below with reference to the embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0067] Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principle of the present invention, and are not intended to limit the protection scope of the present invention.

[0068] It should be noted that, in the description of the present invention, the terms “upper”, “lower”, “left”, “right”, “inner”, “outer” and other terms indicated in the direction or the positional relationship are based on the drawings. The direction or positional relationship shown is only for the conve...

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Abstract

The invention relates to a converter smelting process for HRB400cE corrosion-resistant steel, which includes inspecting the converter; putting smelting raw materials into the converter, heating to liquefy the smelting raw materials in the converter into molten steel; inserting an oxygen lance into the converter and passing oxygen above the molten steel To decarburize the molten steel; determine the decarburization progress of the molten steel according to the brightness of the flame and determine whether the decarburization is completed according to the clarity of the oxygen lance; add a recarburizer to the converter to initially remove the oxygen in the molten steel; transfer the molten steel to the ladle, add silicon manganese Alloy to deoxidize the molten steel twice; select the corresponding type of metal to alloy the molten steel. The present invention establishes a preset matrix by using the central control processor, determines the oxygen supply time of the oxygen lance according to the carbon content in the molten steel, and makes the oxygen introduced into the oxygen lance just react with the carbon element in the molten steel to ensure the use of a specified amount of oxygen. Oxygen completes the decarburization of molten steel, effectively improving the decarburization efficiency of the process for molten steel, thereby improving the smelting efficiency of the process.

Description

technical field [0001] The invention relates to the technical field of metal smelting, in particular to a converter smelting process of HRB400cE corrosion-resistant steel. Background technique [0002] HRB400cE is the grade of threaded steel bar specified in "Steel for Reinforced Concrete" GB 1499.2-2007. Due to the wide range of standard components and the difference in production equipment and process control of manufacturers, the composition of HRB400cE hot-rolled ribbed steel bars produced by various manufacturers Each is different, and the production process of each steel plant is also different. In the prior art, the corrosion resistance of HRB400cE steel is usually improved by removing the carbon in the raw material or adding metals during the smelting process to alloy the molten steel. At the same time, in the prior art, there is no way to accurately adjust the amount of oxygen in the molten steel in the process of oxygenating the molten steel, so that the oxygen co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21C5/28C21C5/30
CPCC21C5/28C21C5/30C21C2300/06Y02P10/20Y02P10/25
Inventor 王光文陈贵和张盛梁涂文兴
Owner 福建三宝钢铁有限公司
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