Cored wire core compound and its manufacture method

A composition and cored wire technology, applied in the direction of cable/conductor manufacturing, conductive materials, conductors, etc., can solve the problems of unsatisfactory, waste of resources and purification effect, so as to improve the utilization rate, facilitate the purification of molten steel, and reduce splashing volume effect

Inactive Publication Date: 2007-10-24
马长慧
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The task of the present invention is to provide a core layer composition of a cored wire that solves the problems of resource waste and unsatisfactory purification effect by increasing the melting point of the core layer and increasing its density.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: A method for preparing a core layer composition of a cored wire.

[0015] Take 100 parts of lime powder (with a particle size of less than 0.15mm) and 48 parts of aluminum particles (with a particle size of less than 2mm), and add fluorite powder whose weight does not exceed 5% of the total weight, mix the above materials evenly and make them into a block, then put them into the smelting furnace Among them, the smelting furnace can adopt a resistance heating vacuum smelting furnace, and then send electricity to raise the temperature and pump a vacuum to keep the vacuum in the smelting furnace at any vacuum value between 10Pa and 50Pa. When the temperature in the furnace reaches 500°C- Stop vacuuming at 600°C, then add inert gas into the smelting furnace, and continue to heat up to smelt the materials in the furnace. The smelting temperature is not lower than 1100°C, generally not higher than 1300°C. When the smelting temperature is 1300°C, The smelting tim...

Embodiment 2

[0019] Example 2: The composition of the core layer of the cored wire is prepared by a preparation method.

[0020] Take 40Kg of elemental calcium, 10Kg of calcium-aluminum alloy, and 50Kg of calcium-aluminate, and mix these three materials thoroughly to make a core layer composition.

Embodiment 3

[0021] Example 3: The composition of the core layer of the cored wire was prepared by a preparation method.

[0022] Take 10Kg of elemental calcium, 50Kg of calcium-aluminum alloy, and 40Kg of calcium-aluminate. These three materials are fully mixed to form a core layer composition.

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Abstract

The related core compound of core-spun yarn comprises calcium powder, calloy powder and calcium aluminate, wherein the preparation method including: mixing the lime powder and aluminum particle, and vacuum refining. The elemental calcium and calcium-aluminum alloy have high melting point and density fit to reduce the vapor pressure and decrease the molten steel splash. Specially, the calcium aluminate exists in molten steel as molten state, and has less density than the molten steel to adsorb the impurity for cleaning the molten steel.

Description

Technical field: [0001] The invention relates to a composition for making a core layer of a cored wire and a method for making the core layer composition. Background technique: [0002] Cored wire is a material used in smelting special steel such as low carbon-low silicon aluminum killed steel, usually composed of a core layer and a sheath wrapped on the outer surface of the core layer. In the prior art, a mixture of calcium powder and iron powder, or a mixture of calcium powder, iron powder and aluminum powder is used as the core material, and steel strip or aluminum strip is used as the sheath material, as disclosed in Chinese Patent No. 1884590 The name "a preparation method of molten steel deoxidizer for calcium-aluminum cored wire" provides a specific example of using the above-mentioned materials to make the core layer. When using cored wire to smelt special steel, the cored wire is continuously fed into the refining furnace, melted by the high temperature of the molt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/00H01B13/00
Inventor 马长慧郭文正
Owner 马长慧
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