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Refining agent for spring steel production furnace external refining and preparation method thereof

A refining agent and steel furnace technology, applied in the field of spring steel production, can solve the problems of high cost, poor refining agent performance, and low ability to desulfurize and absorb inclusions, and achieve low cost, good slagging performance, improved mechanical properties and The effect of corrosion resistance

Active Publication Date: 2015-05-20
江苏古沙农业科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The performance of the current refining agent is poor, the ability of desulfurization, dephosphorization and adsorption of inclusions is not high, and the cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A refining agent for producing spring steel for refining outside the furnace, consisting of the following raw materials in parts by weight: 20 parts of calcium oxide, 10 parts of calcium fluoride, 5 parts of barium chloride, 8 parts of magnesium chloride, 10 parts of waste aluminum powder, magnesium oxide 10 parts, rare earth 3 parts, diatom mud 8 parts, bentonite 10 parts, pyrophyllite 6 parts.

[0013] Preparation method: first use a crusher to crush each raw material into 10mm particles respectively, then weigh the raw materials according to the above weight parts, mix them evenly with a ball mill, then sieve the mixed raw materials with a 100-mesh sieve, and finally sieve the raw materials The final mixture is baked at a temperature of 80°C.

[0014] The refining agent used in the production of spring steel for refining outside the furnace prepared in Example 1 has a desulfurization rate of 60% and a dephosphorization rate of 69%.

Embodiment 2

[0016] A refining agent for producing spring steel for refining outside the furnace, consisting of the following raw materials in parts by weight: 22 parts of calcium oxide, 9 parts of calcium fluoride, 6 parts of barium chloride, 8 parts of magnesium chloride, 12 parts of waste aluminum powder, magnesium oxide 9 parts, rare earth 3 parts, diatom mud 7 parts, bentonite 11 parts, pyrophyllite 7 parts.

[0017] Preparation method: first use a crusher to crush each raw material into 20mm particles respectively, then weigh the raw materials according to the above weight parts, mix them evenly with a ball mill, then sieve the evenly mixed raw materials with a 100-mesh sieve, and finally sieve the raw materials The final mixture is baked at a temperature of 90°C.

[0018] The refining agent used in the production of spring steel for refining outside the furnace prepared in Example 2 has a desulfurization rate of 62% and a dephosphorization rate of 68%.

Embodiment 3

[0020] A refining agent for producing spring steel for refining outside the furnace, consisting of the following raw materials in parts by weight: 25 parts of calcium oxide, 10 parts of calcium fluoride, 6 parts of barium chloride, 6 parts of magnesium chloride, 13 parts of waste aluminum powder, magnesium oxide 8 parts, rare earth 4 parts, diatom mud 6 parts, bentonite 12 parts, pyrophyllite 7 parts.

[0021] Preparation method: first use a crusher to crush each raw material into 10-30mm particles respectively, then weigh the raw materials according to the above weight parts, mix them uniformly with a ball mill, and then sieve the uniformly mixed raw materials with a 100-mesh sieve, and finally The sieved mixture is baked at a temperature of 80-100°C.

[0022] The refining agent used in the production of spring steel for refining outside the furnace prepared in Example 3 has a desulfurization rate of 68% and a dephosphorization rate of 75%.

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PUM

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Abstract

The invention discloses a refining agent for spring steel production furnace external refining and a preparation method thereof. The refining agent is composed of the following raw materials in parts by weight: 20-30 parts of calcium oxide, 8-10 parts of calcium fluoride, 5-8 parts of barium chloride, 5-8 parts of magnesium chloride, 10-15 parts of scrap aluminum powder, 5-10 parts of magnesium oxide, 3-5 parts of rare earth, 5-8 parts of diatom ooze, 10-15 parts of bentonite and 6-8 parts of pyrauxite. The preparation method comprises the following steps: respectively crushing the raw materials into 10-30mm particles with a crusher, weighing the raw materials according to parts by weight, uniformly mixing with a ball mill, screening the uniformly mixed raw materials with a 100-mesh sieve, and finally, baking the screened mixture at 80-100 DEG C. The refining agent has the advantages of high chemical stability, favorable desulfurization and dephosphorization effect, favorable slaggability and high degassing and impurity-removal capacity, and obviously enhances the mechanical properties and corrosion resistance of the spring steel. The method has the advantages of simple preparation technique and low cost.

Description

technical field [0001] The invention relates to the technical field of spring steel production, in particular to a refining agent for producing spring steel for refining outside a furnace and a preparation method. Background technique [0002] The development of alloy steel has a history of more than 100 years. So far, a variety of alloy steels have been applied in industry, mainly including the following types: quenched and tempered steel, spring steel, tool steel, high speed steel, die steel, high school low carbon alloy steel etc. In the production process of spring steel, in order to improve the quality and productivity of products, refining agents are needed to desulfurize, dephosphorize and remove impurities in molten steel during refining outside the furnace, so as to reduce the content of oxygen, sulfur and inclusions in molten steel. The current refining agent has poor performance, low desulfurization, dephosphorization, and adsorption of inclusions, and high cost....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/04C21C7/064
Inventor 梅百荣
Owner 江苏古沙农业科技发展有限公司
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