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Seamless high calcium coating line for steelmaking deoxidization, and preparation method thereof

A high-calcium coating technology, applied in the direction of improving process efficiency, can solve the problems of poor deoxidation and removal of inclusions, etc., achieve simple material composition and structure design, improve billet quality, and combine tightly

Inactive Publication Date: 2018-05-11
罗文斌
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a seamless high-calcium coated wire for deoxidation in steelmaking, so as to solve the problem of poor deoxidation and removal of inclusions in the existing calcium cored wire

Method used

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  • Seamless high calcium coating line for steelmaking deoxidization, and preparation method thereof
  • Seamless high calcium coating line for steelmaking deoxidization, and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0023] The seamless high-calcium coating line for steelmaking deoxidation in this embodiment includes calcium wires arranged in sequence from inside to outside, a silicon powder layer covering the calcium wires, and a steel sleeve covering the silicon powder layer. The diameter of the calcium wire is 6.5mm, the thickness of the silicon powder layer is 0.95mm, and the steel sleeve is 08Al steel with a thickness of 0.8mm.

[0024] The preparation method of the seamless high-calcium coating line for steelmaking deoxidation in this embodiment is prepared by the following steps: add silicon powder between the calcium wire and the 08Al steel strip, and curl it into a tube blank with a pipe diameter of 13mm by the forming unit , and then welded into a seamless steel sleeve by a high-frequency welding machine, and then enter the diameter-reducing drawing unit, and the diameter is reduced to a cored wire with a diameter of 10mm.

Embodiment 2

[0026] The seamless high-calcium coating line for steelmaking deoxidation in this embodiment includes calcium wires arranged in sequence from inside to outside, a silicon powder layer covering the calcium wires, and a steel sleeve covering the silicon powder layer. The diameter of the calcium wire is 6.5mm, the thickness of the silicon powder layer is 2.25mm, and the steel sleeve is 08Al steel with a thickness of 1.0mm.

[0027] The preparation method of the seamless high-calcium coating line for steelmaking deoxidation in this embodiment is prepared by the following steps: add silicon powder between the calcium wire and the 08Al steel strip, and curl it into a tube blank with a pipe diameter of 15 mm by the forming unit , and then welded into a seamless steel sleeve by a high-frequency welding machine, and then enter the diameter-reducing drawing unit, and the diameter of the diameter is 13mm cored wire.

Embodiment 3

[0029] The seamless high-calcium coating line for steelmaking deoxidation in this embodiment includes calcium wires arranged in sequence from inside to outside, a silicon powder layer covering the calcium wires, and a steel sleeve covering the silicon powder layer. The diameter of the calcium wire is 8.0mm, the thickness of the silicon powder layer is 2.2mm, and the steel sleeve is 08Al steel with a thickness of 1.8mm.

[0030] The preparation method of the seamless high-calcium coating line for steelmaking deoxidation in this embodiment is prepared by the following steps: add silicon powder between the calcium wire and the 08Al steel strip, and curl it into a tube blank with a pipe diameter of 18 mm by the forming unit , and then welded into a seamless steel sleeve by a high-frequency welding machine, and then enter the diameter-reducing drawing unit, and the diameter is reduced to a cored wire with a diameter of 16mm.

[0031] In other embodiments of the seamless high-calciu...

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Abstract

The invention relates to a seamless high calcium coating line for steelmaking deoxidization, and a preparation method thereof. The seamless high calcium coating line comprises a calcium wire, a silicon powder layer for wrapping the calcium wire, as well as a steel jacket for wrapping the silicon powder layer, wherein the calcium wire, the silicon powder layer for wrapping the calcium wire as wellas the steel jacket for wrapping the silicon powder layer are arranged in sequence from the inside out. The invention provides the seamless high calcium coating line, the silicon powder layer for wrapping is arranged between the inner core calcium wire and the steel jacket on the outer layer, and has a strong appetency to oxygen and occluded foreign substances in molten steel, thereby playing synergetic deoxidizing and cleaning effect together with the calcium wire, therefore, treatment for the occluded foreign substances in molten steel is more thoroughly; moreover, the melting point of the silicon powder is relatively high, and under the wrapping of the steel jacket, an effect of preventing heat of the molten steel from inward transferring can be played, so that the seamless high calciumcoating line can be inserted into a deeper part of a steel ladle, thus, the increase of calcium yield is facilitated.

Description

technical field [0001] The invention belongs to the field of treating agents for iron and steel smelting, and in particular relates to a seamless high-calcium coating line for steelmaking deoxidation and a preparation method thereof. Background technique [0002] During the steel smelting process, a large amount of oxygen will appear in the molten steel, and the existence of oxygen will cause a large number of bubbles in the billet, which will affect the surface quality and cleanliness of the billet. At present, the method of feeding calcium cored wire is often used to remove inclusions and oxygen in molten steel and improve the cleanliness of molten steel. [0003] When feeding the wire into the ladle, the calcium cored wire is inserted into the molten steel at a high speed through the guide tube of the wire feeder, but due to the low melting point (845°C) and low boiling point (1450°C) of metallic calcium, The molten steel is very easy to gasify and float to the surface o...

Claims

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Application Information

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IPC IPC(8): C21C7/06C21C7/076
CPCC21C7/0056C21C7/06C21C7/076Y02P10/20
Inventor 罗文斌罗晓彤
Owner 罗文斌
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