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Aluminum alloy refining agent and preparation method thereof

A refining agent and aluminum alloy technology, which is applied in the field of aluminum alloy processing, can solve the problems of poor degassing and slag removal effect and large destructive force of containers, and achieve good degassing and slag removal effect, low hydrogen content, and high slag removal rate Effect

Inactive Publication Date: 2019-01-15
王再青
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a high-efficiency refining agent for aluminum alloys, by adding graphite, plant ash, fluorinated rare earth compounds, etc. The effect of gas slag removal is poor, and the problem of large damage to the container

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] An aluminum alloy refining agent, in parts by weight, comprises the following components: 35 parts of NaCl, 30 parts of CaS, CaSO 4 12 parts, MgF 2 5 parts, Na 3 A1F 6 3 parts, Na 2 SiF 6 8 copies, C 2 Cl 6 0.5 parts, graphite 17 parts, plant ash 30 parts, DyF 3 2 parts, CeF 3 6 servings.

[0020] The preparation method of the aluminum alloy refining agent comprises the following steps:

[0021] S1: Soak the graphite in 32% hydrochloric acid for 2 hours, then filter, then dry at a high temperature of 300°C for 30 minutes, cool, crush and pass through a 20-mesh sieve;

[0022] S2: Soak plant ash in 32% hydrochloric acid for 4 hours, then wash, filter, then dry at 300°C for 45 minutes, pass through a 10-mesh sieve after cooling;

[0023] S3: NaCl, CaS, CaSO 4 , MgF 2 、Na 3 A1F 6 、Na 2 SiF 6 、C 2 Cl 6 、DyF 3 , CeF 3 The powder is passed through a 10-mesh sieve, then evenly mixed with the powder in step S1, and dried until the water content is lowe...

Embodiment 2

[0025] An aluminum alloy refining agent, in parts by weight, comprises the following components: 50 parts of NaCl, 15 parts of CaS, CaSO 4 14 parts, MgF 2 6 parts, Na 3 A1F 6 10 parts, Na 2 SiF 6 4 copies, C 2 Cl 6 0.6 parts, graphite 25 parts, plant ash 20 parts, DyF 3 3 parts, CeF 3 8 servings.

[0026] The preparation method of the aluminum alloy refining agent comprises the following steps:

[0027] S1: Soak graphite in 33% hydrochloric acid for 2 hours, then filter, then dry at 400°C for 25 minutes, cool, crush and pass through a 20-mesh sieve;

[0028] S2: Soak plant ash in 33% hydrochloric acid for 4 hours, then wash and filter, then dry at 400°C for 50 minutes, pass through a 10-mesh sieve after cooling;

[0029] S3: NaCl, CaS, CaSO 4 , MgF 2 、Na 3 A1F 6 、Na 2 SiF 6 、C 2 Cl 6 、DyF 3 , CeF 3 The powder is passed through a 10-mesh sieve, then evenly mixed with the powder in step S1, and dried until the water content is lower than 2.1%, to obtain...

Embodiment 3

[0031] An aluminum alloy refining agent, in parts by weight, comprises the following components: 30 parts of NaCl, 27 parts of CaS, CaSO 4 6 parts, MgF 2 10 parts, Na 3 A1F 6 11 parts, Na 2 SiF 6 5 copies, C 2 Cl 6 1.0 parts, graphite 15 parts, plant ash 22 parts, DyF 3 6 parts, CeF 3 2 servings.

[0032] The preparation method of the aluminum alloy refining agent comprises the following steps:

[0033] S1: Soak graphite in 30% hydrochloric acid for 2 hours, then filter, then dry at 500°C for 28 minutes, cool, crush and pass through a 20-mesh sieve;

[0034] S2: Soak plant ash in 30% hydrochloric acid for 4 hours, then wash and filter, then dry at 500°C for 40 minutes, pass through a 10-mesh sieve after cooling;

[0035] S3: NaCl, CaS, CaSO 4 , MgF 2 、Na 3 A1F 6 、Na 2 SiF 6 、C 2 Cl 6 、DyF 3 , CeF 3 The powder is passed through a 10-mesh sieve, then evenly mixed with the powder in step S1, and dried until the water content is lower than 2.1%, to obtain a...

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PUM

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Abstract

The invention discloses an aluminum alloy refining agent and a preparation method thereof, and belongs to the technical field of aluminum alloy processing. The aluminum alloy refining agent comprisesthe following components of, by weight, 30-50 parts of NaCl, 15-30 parts of CaS, 6-14 parts of CaSO4, 5-10 parts of MgF2, 3-11 parts of Na3AlF6, 4-8 parts of Na2SiF6, 0.5-1.0 part of C2Cl6, 15-25 parts of graphite, 20-30 parts of plant ash, 2-6 parts of DyF3 and 2-8 parts of CeF3. According to the aluminum alloy refining agent and a preparation method thereof, the raw materials of the refining agent contain the graphite, the plant ash and a rare-earth compound, the degassing and slag removing capacity of the refining agent can be improved, the hydrogen content of the aluminum alloy melt is low, and the slag removal rate is high; and the aluminum alloy preparation method is simple, good in degassing and slag removing effects and suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy processing, and in particular relates to an aluminum alloy refining agent and a preparation method thereof. Background technique [0002] Aluminum alloys inevitably absorb and carry gases and produce inclusions during the smelting process, which will cause a series of defects such as pores, shrinkage cavities, shrinkage porosity, cracks and leakage of castings, which will reduce the purity of aluminum alloys and affect the quality . During the production of aluminum alloy, the hydrogen atoms in the solution will spontaneously form hydrogen gas, and the hydrogen gas and inclusions will form bubbles during the solidification of the aluminum alloy solution, causing defects in the aluminum alloy components. Therefore, it is necessary to refine and purify the aluminum alloy smelting process to remove these gases and inclusions and improve the quality of the aluminum alloy. Adding a refining age...

Claims

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Application Information

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IPC IPC(8): C22C1/06C22C1/02C22C21/00
CPCC22C1/06C22C1/026C22C21/00
Inventor 王再青
Owner 王再青
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