Aluminum-silicon alloy refining agent and preparation thereof

An aluminum-silicon alloy and refining agent technology is applied in the research and development field of aluminum-silicon alloy refining agent, and achieves the effects of simple method, improved casting quality, and reduced content of oxidized inclusions

Inactive Publication Date: 2009-01-14
营口经济技术开发区金达合金铸造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Applied to aluminum-silicon alloy casting to solve practical p

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0009] Example 1

[0010] Potassium chloride 20%, sodium chloride 20%, zinc chloride 6%, sodium fluoroaluminate 6%, sodium fluorosilicate 6%, sodium nitrate 15%, graphite powder 1%, hexachloroethane 10%, Sodium fluoroborate 7%, potassium fluorotitanate 7%. The above materials are mixed and stirred evenly, and then the mixture is crushed by a palate crusher. The particle size of the crushed material is 90 mesh. Then 2% charcoal is crushed to 15 mesh. Then the wood carbon powder is mixed with the mixture material. Continue to stir to make it evenly mixed. Press the mixed mixture on a hydraulic press into blocks, the block weight is 0.25 kg, and the density is 180 kg / m 3 . After baking the mixture block at 220°C for 8 hours, it was put into a dry container and sealed. That is to make a refining agent.

Example Embodiment

[0011] Example 2

[0012] Potassium chloride 22%, sodium chloride 22%, zinc chloride 5%, sodium fluoroaluminate 5%, sodium fluorosilicate 5%, sodium nitrate 15%, graphite powder 2%, hexachloroethane 11%, Sodium fluoroborate 4%, potassium fluorotitanate 4%. The above materials are mixed, stirred evenly, and then crushed with a palate crusher. The size of the crushed material is 80 mesh. Then 5% charcoal is crushed to 15 mesh. Then the wood carbon powder is mixed with the mixture material. Continue to stir to make it evenly mixed. Press the mixed mixture on a hydraulic press into blocks, the block weight is 0.25 kg, and the density is 180 kg / m 3 . After baking the mixture block at 240°C for 7 hours, it was put into a dry container and sealed. That is to make a refining agent.

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Abstract

The invention relates to an aluminum silicon alloy refining agent and the manufacturing method, which belongs to the aluminum silicon alloy refining agent research and development field. The aluminum silicon alloy refining agent is configured of potassium chloride, sodium chloride, zinc chloride, sodium fluoaluminate, sodium fluosilicate, sodium nitrate, graphite powder, charcoal powder, hexachoroethane, sodium fluoborate and potassium fluotitanate. The materials are mixed, smashed and pressed into blocks. The using method of the manufactured refining agent: when the temperature of the melted aluminum alloy fluid reaches 720 to 760 DEG C, the refining agent blocks are put into a melting pot to perform the reaction. The reaction time is 10 to 25 minutes. The floating slag is removed, and then the product is cast. The method of the product is simple, the implementation is easy, and when the refining agent manufactured in the method is used for the casting of aluminum silicon alloy, air holes can not be formed on the cast product surface, the content of oxide inclusions in the cast product is obviously reduced, and the cast product quality is greatly improved. The air holes can be reduced by one to two grades. The level of the oxide inclusions is about the second grade. The aluminum silicon alloy refining agent solves the problem that the prior refining agent and the processing method are not ideal.

Description

technical field [0001] The invention belongs to the field of research and development of aluminum-silicon alloy refining agent. Background technique [0002] At present, in the casting process of aluminum-silicon alloy castings, the aluminum-silicon alloy is first melted. Because it is melted at normal temperature and pressure, the melt absorbs moisture in the air and oxidizes, which reduces the quality of the melt. Especially after casting, during the solidification process of the melt, the air bubbles in the melt rise, resulting in pores on the surface of the casting and inclusions of oxides in the casting, so that the quality of the casting cannot be guaranteed, or even scrapped. The existing methods to solve these problems are: inert gas refining method, that is, inert gas is injected into the alloy melt during the melting process. Because the inert gas cannot chemically react with aluminum. As the inert gas rises, bubbles and oxidized inclusions are entrained. Others...

Claims

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Application Information

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IPC IPC(8): C22C1/06C22C21/04
Inventor 温丽洪李刚
Owner 营口经济技术开发区金达合金铸造有限公司
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