Production method of refining agent for secondary refining of hardened and tempered steel

A technology of out-of-furnace refining and production methods, applied in the direction of improving process efficiency, can solve the problems of high cost, low desulfurization and adsorption capacity for inclusions, poor refining agent performance, etc., and achieves low cost, improved mechanical properties and resistance to Good corrosion performance and slagging performance

Inactive Publication Date: 2016-04-20
铜陵百荣木业有限公司
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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 desulfurizati

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1 A production method of a refining agent for quenched and tempered steel refining outside the furnace, which is composed of the following raw materials in parts by weight: 15 parts of potassium chloride, 5 parts of sodium carbonate, 12 parts of sodium sulfate, 5 parts of hexafluorobenzene, 20 parts of calcium oxide, 8 parts of calcium fluoride, 5 parts of barium chloride, 5 parts of magnesium chloride, 10 parts of waste aluminum powder, 5 parts of magnesium oxide, 3 parts of rare earth, 5 parts of bauxite, 5 parts of diatom mud, 10 parts of bentonite 6 parts, 6 parts of pyrophyllite.

[0015] A production method of a refining agent for quenched and tempered steel refining outside the furnace as claimed in claim 1, comprising the following steps:

[0016] (1) Take each raw material of the above-mentioned parts by weight, and break each raw material into particles of 10-30mm respectively;

[0017] (2) Mix the above-mentioned various crushed particles accordin...

Embodiment 2

[0021] Embodiment 2 A production method of a refining agent for quenched and tempered steel refining outside the furnace, which is composed of the following raw materials in parts by weight: 20 parts of potassium chloride, 8 parts of sodium carbonate, 18 parts of sodium sulfate, 10 parts of hexafluorobenzene, 30 parts of calcium oxide, 10 parts of calcium fluoride, 8 parts of barium chloride, 8 parts of magnesium chloride, 15 parts of waste aluminum powder, 10 parts of magnesium oxide, 5 parts of rare earth, 8 parts of bauxite, 8 parts of diatom mud, 15 parts of bentonite 8 parts, 8 parts of pyrophyllite.

[0022] A production method of a refining agent for quenched and tempered steel refining outside the furnace as claimed in claim 1, comprising the following steps:

[0023] (1) Take each raw material of the above-mentioned parts by weight, and break each raw material into particles of 10-30mm respectively;

[0024] (2) Mix the above-mentioned various crushed particles accor...

Embodiment 3

[0028] Embodiment 3 A production method of a refining agent for quenched and tempered steel refining outside the furnace, which is composed of the following raw materials in parts by weight: 16 parts of potassium chloride, 6 parts of sodium carbonate, 15 parts of sodium sulfate, 8 parts of hexafluorobenzene, 25 parts of calcium oxide, 9 parts of calcium fluoride, 6 parts of barium chloride, 7 parts of magnesium chloride, 12 parts of waste aluminum powder, 8 parts of magnesium oxide, 4 parts of rare earth, 6 parts of bauxite, 6 parts of diatom mud, 14 parts of bentonite 7 parts of pyrophyllite.

[0029] A production method of a refining agent for quenched and tempered steel refining outside the furnace as claimed in claim 1, comprising the following steps:

[0030] (1) Take each raw material of the above-mentioned parts by weight, and break each raw material into particles of 10-30mm respectively;

[0031] (2) Mix the above-mentioned various crushed particles according to the ...

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PUM

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Abstract

The invention discloses a production method of a refining agent for secondary refining of hardened and tempered steel. The refining agent is prepared from, by weight, 15-20 parts of potassium chloride, 5-8 parts of sodium carbonate, 12-18 parts of sodium sulfate, 5-10 parts of hexafluorobenzene, 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 waste aluminum powder, 5-10 parts of magnesium oxide, 3-5 parts of rare earth, 5-8 parts of bauxite, 5-8 parts of diatom ooze, 10-15 parts of bentonite and 6-8 parts of pyrophyllite. Compared with the prior art, the refining agent is good in chemical stability, desulfurization and dephosphorization effects and slagging performance, strong in degassing and impurity removal capacity and capable of significantly improving the mechanical property and corrosion resistance of the hardened and tempered steel; meanwhile, the processes of simple mechanical crushing, mixing and pelleting are adopted, the preparation technology is simple, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of quenched and tempered steel production, in particular to a production method of a refining agent for refining quenched and tempered steel outside a furnace. 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 quenched and tempered 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 out-of-furnace refining, 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 in...

Claims

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Application Information

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IPC IPC(8): C21C7/076C21C7/064
CPCC21C7/064C21C7/076Y02P10/20
Inventor 梅百荣
Owner 铜陵百荣木业有限公司
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