Aluminum alloy refining agent containing rare earth element and preparation method thereof

A rare earth element and refining agent technology, which is applied in the field of aluminum alloy processing, can solve the problems of large destructive force of containers and poor degassing and slag removal effect, and achieve low hydrogen content, good degassing and slag removal effect, 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 object of the present invention is to provide a rare earth element-containing aluminum alloy refining agent, by adding gr

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A refining agent for aluminum alloy containing rare earth elements, in parts by weight, comprising the following components: 50 parts of NaCl, 20 parts of CaS, CaSO 4 6 parts, MgF 2 5 parts, Na 3 A1F 6 10 parts, Na 2 SiF 6 8 copies, C 2 Cl 6 0.6 parts, graphite 18 parts, plant ash 28 parts, ytterbium 2 parts, dysprosium 1.5 parts, cerium 1 part.

[0021] The preparation method of the aluminum alloy refining agent containing rare earth elements comprises the following steps:

[0022] S1: Soak graphite in 30% hydrochloric acid for 2 hours, then filter, then dry at 400°C for 30 minutes, cool, crush and pass through a 20-mesh sieve;

[0023] S2: Soak plant ash in 30% hydrochloric acid for 4 hours, then wash, filter, then dry at 400°C for 40 minutes, pass through a 10-mesh sieve after cooling;

[0024] S3: NaCl, CaS, CaSO 4 , MgF 2 、Na 3 A1F 6 、Na 2 SiF 6 、C 2 Cl 6 The powder is passed through a 10-mesh sieve, then mixed evenly with the powder in step S1,...

Embodiment 2

[0027] A refining agent for aluminum alloy containing rare earth elements, in parts by weight, comprising the following components: 30 parts of NaCl, 30 parts of CaS, CaSO 4 8 parts, MgF 2 9 parts, Na 3 A1F 6 11 parts, Na 2 SiF 6 4 copies, C 2 Cl 6 1.0 parts, graphite 5 parts, plant ash 30 parts, ytterbium 2.2 parts, dysprosium 0.5 parts, cerium 1.5 parts.

[0028] The preparation method of the aluminum alloy refining agent containing rare earth elements comprises the following steps:

[0029] S1: Soak graphite in 32% hydrochloric acid for 2 hours, then filter, then dry at 500°C for 25 minutes, cool, crush and pass through a 20-mesh sieve;

[0030] S2: Soak plant ash in 32% hydrochloric acid for 4 hours, then wash and filter, then dry at 500°C for 45 minutes, pass through a 10-mesh sieve after cooling;

[0031] S3: NaCl, CaS, CaSO 4 , MgF 2 、Na 3 A1F 6 、Na 2 SiF 6 、C 2 Cl 6 The powder is passed through a 10-mesh sieve, then mixed evenly with the powder in s...

Embodiment 3

[0034] An aluminum alloy refining agent containing rare earth elements, in parts by weight, comprising the following components: 35 parts of NaCl, 15 parts of CaS, CaSO 4 14 parts, MgF 2 10 parts, Na 3 A1F 6 3 parts, Na 2 SiF 6 7 copies, C 2 Cl 6 0.5 parts, graphite 15 parts, plant ash 20 parts, ytterbium 3 parts, dysprosium 0.7 parts, cerium 3 parts.

[0035] The preparation method of the aluminum alloy refining agent containing rare earth elements comprises the following steps:

[0036] S1: Soak graphite in 33% hydrochloric acid for 2 hours, then filter, then dry at 300°C for 28 minutes, cool, crush and pass through a 20-mesh sieve;

[0037] S2: Soak plant ash in 33% hydrochloric acid for 4 hours, then wash and filter, then dry at 300°C for 50 minutes, pass through a 10-mesh sieve after cooling;

[0038] S3: NaCl, CaS, CaSO 4 , MgF 2 、Na3 A1F 6 、Na 2 SiF 6 、C 2 Cl 6 The powder is passed through a 10-mesh sieve, then mixed evenly with the powder in step S1...

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PUM

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Abstract

The invention discloses an aluminum alloy refining agent containing a rare earth element and a preparation method thereof, and belongs to the technical field of aluminum alloy processing. The aluminumalloy refining agent containing the rare earth element comprises the 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, 2-3 parts of ytterbium, 0.5-1.5 part of dysprosium and 1-3 parts of cerium. According to thealuminum alloy refining agent containing the rare earth element and the 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, in particular to an aluminum alloy refining agent containing rare earth elements 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. Ad...

Claims

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Application Information

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