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Impurity removing method for alloy liquid of alloy bushings

An alloy liquid and alloy technology, applied in the field of alloy bushings, can solve problems such as difficulty in meeting the requirements of high-quality alloy products, and achieve the effects of promoting floating flow, good separation, and increasing surface tension

Inactive Publication Date: 2017-03-15
潜山市凯创橡塑机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional dehydrogenation and deoxidation refining technologies are difficult to meet the requirements of high-quality alloy products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1 A method for removing impurities from an alloy liner alloy liquid, comprising the following steps:

[0015] (1) After weighing the alloy powder, put it into the smelting furnace, add 0.1-0.3% refining agent according to the amount of alloy powder, and pass through the protective gas to replace the air;

[0016] (2) Heat the melting furnace to 870°C and keep it for 10 minutes, then add 0.05-0.1% of the total amount of alloy powder as a surface covering agent, then raise the temperature to 740°C, and keep it for more than 5-6 hours;

[0017] (3) After the temperature drops to 600°C, pouring is carried out, and the pouring time is 0.5 to 1 hour.

[0018] The protective gas introduced in the step (1) is argon.

[0019] The refining agent includes the following raw materials in parts by weight: 10-12 parts of potassium fluoroaluminate, 25-10 parts of CaF, 12-18 parts of LiCl, 3-5 parts of calcium oxide, 30-35 parts of BAlF, 5-10 parts of K2SiF6, carbonized 3 t...

Embodiment 2

[0020] Embodiment 2 A method for removing impurities from an alloy liner alloy liquid, comprising the following steps:

[0021] (1) After weighing the alloy powder, put it into the smelting furnace, add 0.1-0.3% refining agent according to the amount of alloy powder, and pass through the protective gas to replace the air;

[0022] (2) Heat the smelting furnace to 1070°C and keep it for 10 minutes, then add 0.05-0.1% of the total amount of alloy powder as a surface covering agent, then raise the temperature to 750°C, and keep it for more than 5-6 hours;

[0023] (3) After the temperature drops to 650°C, pouring is carried out, and the pouring time is 0.5 to 1 hour.

[0024] The protective gas introduced in the step (1) is argon.

[0025] The refining agent includes the following raw materials in parts by weight: 10-12 parts of potassium fluoroaluminate, 25-10 parts of CaF, 12-18 parts of LiCl, 3-5 parts of calcium oxide, 30-35 parts of BAlF, 5-10 parts of K2SiF6, carbonized 3...

Embodiment 3

[0026] Embodiment 3 A method for removing impurities from an alloy liner alloy liquid, comprising the following steps:

[0027] (1) After weighing the alloy powder, put it into the smelting furnace, add 0.1-0.3% refining agent according to the amount of alloy powder, and pass through the protective gas to replace the air;

[0028] (2) Heat the melting furnace to 940°C and keep it for 10 minutes, then add 0.05-0.1% of the total amount of alloy powder as a surface covering agent, then raise the temperature to 745°C, and keep it for more than 5-6 hours;

[0029] (3) After the temperature drops to 630°C, pouring is carried out, and the pouring time is 0.5 to 1 hour.

[0030] The protective gas introduced in the step (1) is argon.

[0031] The refining agent includes the following raw materials in parts by weight: 10-12 parts of potassium fluoroaluminate, 25-10 parts of CaF, 12-18 parts of LiCl, 3-5 parts of calcium oxide, 30-35 parts of BAlF, 5-10 parts of K2SiF6, carbonized 3 t...

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PUM

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Abstract

The invention discloses an impurity removing method for alloy liquid of alloy bushings. The method includes the following steps that (1) alloy powder is weighed and then added into a smelting furnace, 0.1-0.3% of a refining agent is added according to the amount of the alloy powder, and protective gas is introduced to replace air; (2) the smelting furnace is heated to the temperature of 870-1070 DEG C, the temperature is maintained for 10 min, then a surface covering agent accounting for 0.05-0.1% of the total amount of the alloy powder is added, and afterwards the temperature is increased to 740-750 DEG C and maintained for 5-6 h or above; and (3) pouring is carried out after the temperature is decreased to 600-650 DEG C, and pouring time is 0.5-1 h. Due to the combination of the refining agent and the surface covering agent, the multiple functions of deoxygenation, degassing, impurity removing and the like are integrated, and the adsorption, dissolution and combining slagging capacity is high; and the refining agent and the surface covering agent can increase the surface tension among melt, facilitate floating and flowing of molten slag and allow the molten slag to be better separated from the alloy liquid, and thus the effects of refining, impurity removing and melt purifying are achieved.

Description

technical field [0001] The invention relates to the technical field of alloy bushings, in particular to a method for removing impurities from alloy liquid of alloy bushings. Background technique [0002] The alloy liquid of the alloy bush has the advantages of low density, excellent thermal conductivity, electrical conductivity, and easy forming, so it is widely used. Alloy forming methods mainly include casting forming and deformation processing. Among them, casting forming is still a widely used forming method in modern aluminum alloy production. [0003] The traditional molding method mainly adopts die-casting molding, so that during the die-casting molding process, hydrogen molecules are spontaneously formed in the alloy solution and bubbles or precipitated impurities formed by non-metallic inclusions affect the quality of aluminum alloys. After the alloy smelting is completed, the aluminum alloy needs to be refined to reduce the impurities in the aluminum alloy. Tradi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/06
CPCC22C1/06
Inventor 张加和
Owner 潜山市凯创橡塑机械制造有限公司
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