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Preparation method of silicon-calcium-iron core-spun yarn

A cored wire and iron-clad technology is applied in the field of preparation of silicon calcium iron cored wire, which can solve the problems of waste of resources and deoxidation costs, and achieve the effects of avoiding steel quality defects, reducing waste products, and facilitating production organization and raw material management.

Inactive Publication Date: 2014-05-14
无锡市锡山区鹅湖镇益民拉丝辅机厂
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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 propose a method for preparing a silicon-calcium-iron cored wire, and use the cored wire produced by this method to slow down the calcium evaporation rate to solve the problems of resource waste and deoxidation cost.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A method for preparing a silicon-calcium-iron cored wire, the cored wire includes a wire body formed by wrapping core powder with a shell, the shell is made of iron material, the core layer is a core layer composite of a cored wire, and the core layer The composite consists of the following components in parts by weight: 50 parts of passivated calcium powder, 22 parts of sintered converter waste slag, 5 parts of silicon powder and 14 parts of iron powder. The preparation method of the cored wire includes the following steps:

[0023] 1) Preparation of passivated calcium powder: Mix oxalic acid, calcium chloride and water to make a passivation solution, heat it to 50°C, then pour the passivation solution into the calcium powder, stir until the material is dry, and make it after natural cooling Obtain passivation calcium powder, wherein the weight ratio of passivating agent oxalic acid and calcium chloride used is 1: 4; The concentration of described passivation solution i...

Embodiment 2

[0029] A method for preparing a silicon-calcium-iron cored wire, the cored wire includes a wire body formed by wrapping core powder with a shell, the shell is made of iron material, the core layer is a core layer composite of a cored wire, and the core layer The composite consists of the following components in parts by weight: 54 parts of passivated calcium powder, 20 parts of sintered converter waste slag, 7 parts of silicon powder and 10 parts of iron powder. The preparation method of the cored wire includes the following steps:

[0030] 1) Preparation of passivated calcium powder: Mix oxalic acid, calcium chloride and water to make a passivation solution, heat it to 60°C, then pour the passivation solution into the calcium powder, stir until the material is dry, and make it after natural cooling Obtain passivation calcium powder, wherein the weight ratio of passivating agent oxalic acid and calcium chloride used is 1: 3; The concentration of described passivation solution i...

Embodiment 3

[0036] A method for preparing a silicon-calcium-iron cored wire, the cored wire includes a wire body formed by wrapping core powder with a shell, the shell is made of iron material, the core layer is a core layer composite of a cored wire, and the core layer The composite is composed of the following components in parts by weight: 52 parts of passivated calcium powder, 21 parts of sintered converter waste slag, 6 parts of silicon powder and 12 parts of iron powder. The preparation method of the cored wire includes the following steps:

[0037] 1) Preparation of passivated calcium powder: Mix oxalic acid, calcium chloride and water to make a passivation solution, heat it to 55°C, then pour the passivation solution into the calcium powder, stir until the material is dry, and prepare after natural cooling Obtain passivation calcium powder, wherein the weight ratio of passivating agent oxalic acid and calcium chloride used is 1: 3.5; The concentration of described passivation solut...

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PUM

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Abstract

The invention discloses a preparation method of a silicon-calcium-iron core-spun yarn. The core-spun yarn is composed of the following components in parts by weight: 50-54 parts of inactivated calcium powder, 20-22 parts of sintering converter waste slag, 5-7 parts of silicon powder and 10-14 parts of iron powder. The preparation method of the core-spun yarn comprises the following steps: 1) preparing the inactivated calcium powder; 2) preparing the sintering converter waste slag; 3) uniformly mixing the inactivated calcium powder prepared in the step 1), sintering converter waste slag prepared in the step 2), silicon powder and iron powder in a mixer according to the weight proportion; 4) uncoiling an iron sheet or steel strip, and sending into a core-spun yarn production set; and 5) feeding the mixed powder prepared in the step 3) into a material bin, and wrapping the iron sheet or steel strip on the powder by using the core-spun yarn set to form the yarn.

Description

technical field [0001] The invention relates to the technical field of iron and steel metallurgical auxiliary materials, in particular to a method for preparing a silicon-calcium-iron cored wire. Background technique [0002] The cored wire is a wire-shaped material used in refining molten steel. It is composed of a core layer and a sheath made of strip steel sheets wrapped around the outer surface of the core layer. When in use, the cored wire is continuously fed into the ladle through the wire feeding machine. When the foreskin of the cored wire entering the ladle is melted, the core layer is exposed to directly contact with the molten steel for chemical reaction, and stirred by argon The kinetic effect makes it able to effectively achieve deoxidation, desulfurization, and removal of inclusions, so as to improve the quality and performance of steel. It can be seen that in order for the cored wire to effectively purify molten steel, the first condition is that the active c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/00
Inventor 徐建新
Owner 无锡市锡山区鹅湖镇益民拉丝辅机厂