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A direct silicon controlled process for sae1006crqz steel

A technology of process and steel grade, applied in the field of direct supply silicon controlled process, can solve problems such as the deterioration of the wire feeding process, and achieve the effect of guaranteeing the pourability of continuous casting, ensuring the pourability of molten steel, and reducing flocculation.

Active Publication Date: 2022-02-08
BENGANG STEEL PLATES
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Ferrosilicon powder is used instead of silicon-calcium wire or calcium-iron wire to prevent the environment from being polluted by calcium vapor generated in the process of making calcium wire, and solve the problem of environmental deterioration in the steelmaking process of molten steel wire feeding process

Method used

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  • A direct silicon controlled process for sae1006crqz steel

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Embodiment 1

[0023] The present invention is used for the direct supply silicon control technology of SAE1006CrQZ steel type, specifically comprises the following steps:

[0024] (1) According to the production plan, three furnaces were continuously tested in the early stage of pouring, and ferrosilicon powder was used in the test instead of silicon-calcium wire or calcium-iron wire;

[0025] (2) The converter increases the rate of one-time downturning, strives for one-time downturning, and at the same time strengthens the slag blocking operation in the tapping process to reduce the pressure for the subsequent deoxidation treatment of molten steel;

[0026] (3) Operating requirements for argon blowing and deoxygenation in the argon station:

[0027] After the molten steel arrives at the station, turn on the argon gas and blow it for 1 minute to ensure that the slag on the liquid surface of the ladle is completely blown away. Conditions to adjust the addition of ferrosilicon powder.

[00...

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Abstract

The invention relates to the technical field of iron and steel metallurgy, in particular to a direct-supply silicon-controlled process for SAE1006CrQZ steel, and provides a direct-supply silicon-controlled process for SAE1006CrQZ steel. Ferrosilicon powder is used instead of silicon-calcium wire or calcium-iron wire to prevent the environment from being polluted by calcium vapor generated in the process of making calcium wire, and solve the problem of environmental deterioration in the steelmaking process of molten steel wire feeding process. SAE1006CrQZ is a low-silicon steel type. In order to prevent the use of too much ferrosilicon powder from increasing the silicon content of molten steel, resulting in excessive silicon content, and to ensure the castability of molten steel, a small amount of lime is added to the converter, and ferrosilicon powder is used instead of aluminum particles for top slag deoxidation. , and at the same time play the role of deoxidation on the slag surface and reduction of floc.

Description

technical field [0001] The invention relates to the technical field of iron and steel metallurgy, in particular to a direct-supply silicon-controlled process for SAE1006CrQZ steel. Background technique [0002] The main application of SAE1006CrQZ series steel is wire drawing material. The steelmaking process uses aluminum iron and low carbon ferromanganese for deoxidation alloying, because the degree of deoxidation of molten steel is relatively high during the tapping process. Our factory internally stipulates to use aluminum granule top slag to deoxidize in the converter argon station, and to carry out calcium treatment in the wire feeding process, but because there are many deoxidized products containing aluminum, the difficulty of argon blowing mode is aggravated, it is easy to cause continuous casting flocculation, and calcium treatment pollutes the environment . Contents of the invention [0003] In order to solve the above technical problems, the present invention p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21C7/06C21C7/072C21C7/00
CPCC21C7/06C21C7/0056C21C7/072C21C7/0006
Inventor 刘真海任宏伟
Owner BENGANG STEEL PLATES
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