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

A technology of cored wire and iron clad, which is applied in the field of preparation of silicon-calcium-iron cored wire, can solve the problems of resource waste and deoxidation cost, and achieve the effects of avoiding steel quality defects, reducing waste products, and slowing down the calcium evaporation rate

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

[0024] A preparation method of a silicon calcium iron core-coated wire, the core-coated wire comprises a wire body formed by wrapping a core powder with an outer shell, the outer shell is made of iron material, the core layer is a core-coated wire core layer composite, and the core layer The composite is composed of the following components in parts by weight: 56 parts of passivation calcium powder, 18 parts of converter waste slag, 20 parts of dry dust dust, and 10 parts of silicon powder. The preparation method of the cored wire comprises the following steps:

[0025] 1) Preparation of passivation 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 then prepare after natural cooling. Obtain passivation calcium powder, wherein the weight ratio of the used passivating agent oxalic acid and calcium chloride is 1: 4; The concent...

Embodiment 2

[0031] A preparation method of a silicon calcium iron core-coated wire, the core-coated wire comprises a wire body formed by wrapping a core powder with an outer shell, the outer shell is made of iron material, the core layer is a core-coated wire core layer composite, and the core layer The composite is composed of the following components in parts by weight: 60 parts of passivation calcium powder, 14 parts of converter waste slag, 22 parts of dry dust dust, and 8 parts of silicon powder. The preparation method of the cored wire comprises the following steps:

[0032] 1) Preparation of passivation 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 then prepare after natural cooling. Obtain passivation calcium powder, wherein the weight ratio of used passivating agent oxalic acid and calcium chloride is 1: 3; The concentration...

Embodiment 3

[0038] A preparation method of a silicon calcium iron core-coated wire, the core-coated wire comprises a wire body formed by wrapping a core powder with an outer shell, the outer shell is made of iron material, the core layer is a core-coated wire core layer composite, and the core layer The composite is composed of the following components in parts by weight: 58 parts of passivation calcium powder, 16 parts of converter waste slag, 21 parts of dry dust dust, and 9 parts of silicon powder. The preparation method of the cored wire comprises the following steps:

[0039]1) Preparation of passivation 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 then prepare after natural cooling. Get passivation calcium powder, wherein the weight ratio of the used passivating agent oxalic acid and calcium chloride is 1: 3.5; The concentrati...

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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 composite is composed of the following components in parts by weight: 56-60 parts of inactivated calcium powder, 14-18 parts of converter waste slag, 20-22 parts of dry-process dedusting ash and 8-10 parts of silicon powder. The preparation method of the core-spun yarn comprises the following steps: 1) preparing the inactivated calcium powder; 2) preparing the converter waste slag and dry-process dedusting ash premelting material; 3) uniformly mixing the inactivated calcium powder prepared in the step 1), premelting mixture prepared in the step 2) and silicon 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 preparation method of a silicon calcium iron cored wire. Background technique [0002] The cored wire is a linear material used in refining molten steel. It consists 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 feeder. When the sheath of the cored wire entering the ladle is melted, the core layer is exposed and directly contacts the molten steel for chemical reaction, and is stirred by argon gas. It can effectively achieve deoxidation, desulfurization and removal of inclusions 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 primary condition is that the active ingredients in the core layer must be able to be ...

Claims

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Application Information

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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