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Process method for improving quality of molten steel by gradually regulating and controlling electroslag remelting high-temperature slag system

A technology of electroslag remelting and process method, which is applied in the field of special metallurgy, and can solve problems such as variable organizational structure, affecting the stability of steel ingot quality, and changing physical and chemical properties

Pending Publication Date: 2022-07-05
苏州金立鑫特材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to overcome the problem that the microstructure of the high-temperature slag system in the existing electroslag remelting technology is variable and unstable, which leads to changes in its physical and chemical properties, thereby affecting the stability of the quality of the steel ingot , providing a process method for gradually controlling the high-temperature slag system of electroslag remelting to improve the quality of molten steel

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  • Process method for improving quality of molten steel by gradually regulating and controlling electroslag remelting high-temperature slag system
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  • Process method for improving quality of molten steel by gradually regulating and controlling electroslag remelting high-temperature slag system

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Embodiment 1

[0048] In a preferred embodiment of the present invention, a process method for gradually adjusting the electroslag remelting high temperature slag system to improve the quality of molten steel includes:

[0049] like figure 2 After a period of time after the start of electroslag remelting and during the process, the special slag system gradient control agent is gradually uniformly sprinkled into the slag pool, and the electroslag remelting time is calculated, and the addition amount is gradually adjusted to achieve a stable high temperature slag system. Physical and chemical properties, the goal of improving the quality of molten steel.

[0050] The gradient regulator added to the high temperature slag pool can quickly sink to the bottom of the slag pool, figure 1 Then, with the continuous progress of the electroslag reaction, the specific gravity regulating substance in the regulator gradually melts in equal proportions. The specific gravity regulating substance can be ir...

Embodiment 2

[0085]A process method of gradual regulation and control of electroslag remelting high temperature slag system to improve the quality of molten steel in this embodiment is basically the same as that of Embodiment 1, except that the composition of each material is more specific and detailed: the slag system regulation in this embodiment The weight percentage of calcium core particles in the agent is 36%; the weight percentage of MgO is 10%; the weight percentage of TiO2 is 4%; the weight percentage of aluminum particles is 28%; the weight percentage of iron particles is 8%; the weight percentage of silicon powder It is 5%, and the adhesive in this embodiment adopts epoxy resin glue and the dosage is 5ml. In addition, the basicity of the slag-based regulator in this embodiment is 10, and the calcium-aluminum ratio is 1.8.

[0086] In order to further illustrate the advanced nature and creativity of the present invention, the inventor carried out a slag system gradient regulation...

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Abstract

The invention discloses a process method for improving the quality of molten steel by gradually regulating and controlling an electroslag remelting high-temperature slag system, which comprises the following steps of: gradually and uniformly spreading a special slag system gradually-changing regulating and controlling agent into a slag bath after and in the process of starting electroslag remelting for a period of time, calculating the electroslag remelting time, and gradually regulating the adding amount so as to stabilize the physical and chemical properties of the high-temperature slag system; the slag system gradual change regulating agent can gradually and slowly release slag system regulating substances along with the electroslag process so as to supplement substance consumption of a high-temperature slag system. The density change of the regulating agent in the melting process in the slag bath is further limited, so that the regulating agent can rapidly sink while the regulating agent is suspended at the bottom of the slag bath, can slowly float to the upper surface layer of the slag bath along with the proceeding of the reaction, but does not contact and react with the air; therefore, loss caused by reaction of aluminum particles, silicon powder and the like in the regulating agent with oxygen in air is effectively avoided, and the performance of the regulating agent is guaranteed.

Description

technical field [0001] The invention relates to the technical field of special metallurgy, in particular to a process method for gradually regulating electroslag remelting high temperature slag system to improve the quality of molten steel. Background technique [0002] Electroslag remelting is a common method for smelting superalloys. The slag system plays a very important role in the electroslag remelting process. The composition of electroslag remelting slag system is directly related to the smelting quality of superalloy and the surface quality of ingot. A good superalloy electroslag remelting slag system should have a lower melting point, 100-150°C lower than the melting point of the alloy; have a lower viscosity to obtain good fluidity; have a higher basicity to facilitate desulfurization ; Has appropriate electrical conductivity and high resistivity to ensure the temperature of the electroslag remelting process and the heat required for remelting; has a low mass fra...

Claims

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Application Information

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IPC IPC(8): C22B9/18C21C7/00C21C7/06C21C7/064
CPCC22B9/18C21C7/0645C21C7/06C21C7/0006C21C7/005C21C7/0087
Inventor 时文红王晓伟邓爱军
Owner 苏州金立鑫特材科技有限公司