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Cast steel purifying agent and production method thereof

A production method and purification agent technology, applied in the field of casting auxiliary materials, can solve the problems of unsatisfactory purification effect, unreasonable formula, low deoxidation efficiency, etc., achieve stable application effect, wide application range, and improve product quality.

Inactive Publication Date: 2014-01-15
SICHUAN SHUNYU CASTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the deoxidation process in the steelmaking production process uses a single deoxidation or desulfurization agent, such as aluminum cakes, aluminum rings, aluminum strips, calcium aluminate, etc. for deoxidation. Due to the low density of metal aluminum, the density is one-third of that of molten steel. One, if the floating speed is fast, the deoxidation efficiency is low and the cost is high when entering the slag
In the prior art, there are also some formulas of molten steel purifiers, but there are still problems such as unreasonable formulas and unsatisfactory purification effects.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1, prepare raw materials by following composition and weight ratio:

[0021] Magnesium carbonate 10 kg; silicon carbide 12 kg; sodium hydroxide 6 kg; carbon 13 kg; calcium carbide 8 kg; calcium oxide 50 kg; rare earth 0.1 kg.

[0022] After mixing, put it in a crucible or an intermediate frequency furnace for melting, and the melting temperature is 1000°C. After smelting, stir evenly, pour and cool, and then crush mechanically or manually. The particle size can be determined according to user requirements. In this embodiment, the primary crushing: particle size is 10 mm, and the secondary crushing: particle size is 3 mm. After being broken, it can be sorted and packaged, and put into storage after passing the inspection.

Embodiment 2

[0023] Embodiment 2, prepare raw materials by following composition and weight ratio:

[0024] 15 kg of magnesium carbonate; 15 kg of silicon carbide; 3 kg of sodium hydroxide; 16 kg of carbon; 5 kg of calcium carbide; 45 kg of calcium oxide; 0.2 kg of rare earth.

[0025] After mixing, put it in a crucible or an intermediate frequency furnace for melting, and the melting temperature is 800°C. Stir evenly after smelting, pour and cool, and then crush mechanically or manually. The particle size can be determined according to user requirements. In this example, the primary crushing: particle size is 8 mm, and the secondary crushing: particle size is 6 mm. After being broken, it can be sorted and packaged, and put into storage after passing the inspection.

Embodiment 3

[0026] Embodiment 3, prepare materials by following composition and weight ratio:

[0027] Magnesium carbonate 8 kg; silicon carbide 10 kg; sodium hydroxide 4 kg; carbon: 10 kg; calcium carbide 10 kg; calcium oxide 57 kg; iron 0.05 kg.

[0028] After mixing, put it in a crucible or an intermediate frequency furnace for melting, and the melting temperature is 1100°C. Stir evenly after smelting, pour and cool, and then crush mechanically or manually. The particle size can be determined according to user requirements. The particle size in this example is 9mm. After being broken, it can be sorted and packaged, and put into storage after passing the inspection.

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Abstract

The invention discloses a cast steel purifying agent and a production method thereof. The cast steel purifying agent is prepared by mixing the following raw materials based on weight ratio: 8-15 of magnesium carbonate, 10-15 of silicon carbide, 4-8 of sodium hydroxide; 10-16 of carbon, 5-10 of carbonization calcium, 40-60 of calcium oxide and 0.05-0.2 of microelement; the purifying agent is prepared through steps of mixing, smelting, stirring, cooling, crushing and classified packing. The cast steel purifying agent disclosed by the invention has favorable deoxygenation and desulfurization effects and strong adsorption force on inclusions in slag, and the adsorption effect is improved by 40% or above. According to the invention, the production method has the advantages of wide application range, low cast, and the method can effectively lengthen the temperature-keep time of molten steel and iron melt, thereby improving the product quality of cast steel and reducing the reject rate.

Description

technical field [0001] The invention relates to auxiliary materials for casting, in particular to a purifying agent for cast steel products in casting production. Background technique [0002] With the development of science and technology, all walks of life have higher and higher requirements for the quality of applied steel. In the prior art, the deoxidation process in the steelmaking production process uses a single deoxidation or desulfurization agent, such as aluminum cakes, aluminum rings, aluminum strips, calcium aluminate, etc. for deoxidation. Due to the low density of metal aluminum, the density is one-third of that of molten steel. One, if the floating speed is fast, the deoxidation efficiency is low and the cost is high when entering the slag. In the prior art, there are also some formulas of molten steel purifiers, but problems such as unreasonable formulas and unsatisfactory purifying effects still exist. Contents of the invention [0003] The object of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21C7/076
CPCY02P10/20
Inventor 魏书林
Owner SICHUAN SHUNYU CASTING CO LTD
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