Direct-supplying silicon controlling process for SAE1006CrQZ steel grade

A technology of process and steel type, which is applied in the field of direct-supply silicon-controlled process, can solve problems such as the deterioration of wire feeding process, and achieve the effects of ensuring castability, solving the deterioration of the environment, and deoxidizing flocs on the slag surface

Active Publication Date: 2020-06-30
BENGANG STEEL PLATES
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  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Direct-supplying silicon controlling process for SAE1006CrQZ steel grade

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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 ferrous metallurgy, in particular to a direct-supplying silicon controlling process for an SAE1006CrQZ steel grade. According to the direct-supplying silicon controlling process for the SAE1006CrQZ steel grade, a silicon-calcium wire or a calcium-iron wire is replaced with ferrosilicon powder to prevent calcium steam generated in the calcium wire bonding process from polluting the environment, and the problem that in the steelmaking procedure, a molten steel wire feeding process deteriorates the environment is solved; and SAE1006CrQZ is a low-silicon steel grade, in order to prevent the situations that the excessive ferrosilicon powder is used, consequently silicon in molten steel is increased, and the component of silicon exceeds the standard and ensure pourability of the molten steel, converter tapping is carried out, a small amount of lime is added, top slag deoxidization is conducted by replacing aluminum particles with the ferrosilicon powder, and meanwhile the effects of slag surface deoxidization and flocculent fluid reducing are achieved.

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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IPC IPC(8): C21C7/06C21C7/072C21C7/00
CPCC21C7/06C21C7/0056C21C7/072C21C7/0006
Inventor刘真海任宏伟
OwnerBENGANG STEEL PLATES