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Aluminum and aluminum alloy smelting 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, peat soil, fluorinated rare earth compounds, etc. The effect of degassing and 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] A smelting and refining agent for aluminum and aluminum alloys, the refining agent includes the following components in parts by weight: 44 parts of NaCl, 12 parts of CaS, A1F 3 16 parts, MgF 2 8 parts, Mg 2 N 3 8 parts, Na 3 A1F 6 11 parts, Na 2 SiF 6 7 copies, C 2 Cl 6 0.5 parts, graphite 17 parts, peat soil 10 parts, DyF 3 6 parts, CeF 3 7 servings.

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

[0021] S1: Soak graphite in 30% 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 the peat soil with 30% hydrochloric acid for 4 hours, then filter, then dry at a high temperature of 300°C for 45 minutes, cool and pulverize, and pass through a 10-mesh sieve;

[0023] S3: NaCl, CaS, A1F 3 13 parts, MgF 2 , Mg 2 N 3 、Na 3 A1F 6 、Na 2 SiF 6 、C 2 Cl ...

Embodiment 2

[0025] A smelting and refining agent for aluminum and aluminum alloys, the refining agent includes the following components in parts by weight: 60 parts of NaCl, 13 parts of CaS, A1F 3 8 parts, MgF 2 4 parts, Mg 2 N 3 14 parts, Na 3 A1F 6 3 parts, Na 2 SiF 6 8 copies, C 2 Cl 6 0.6 parts, graphite 25 parts, peat soil 12 parts, DyF 3 2 parts, CeF 3 8 servings.

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

[0027] S1: Soak graphite in 32% 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 the peat soil with 32% hydrochloric acid for 4 hours, then filter, then dry at a high temperature of 400°C for 50 minutes, cool and pulverize, and pass through a 10-mesh sieve;

[0029] S3: NaCl, CaS, A1F 3 13 parts, MgF 2 , Mg 2 N 3 、Na 3 A1F 6 、Na 2 SiF 6 、C 2 Cl 6 、DyF 3 , CeF 3 The...

Embodiment 3

[0031] A smelting and refining agent for aluminum and aluminum alloys, the refining agent includes the following components in parts by weight: 40 parts of NaCl, 18 parts of CaS, A1F 3 10 parts, MgF 2 7 parts, Mg 2 N 3 15 parts, Na 3 A1F6 5 parts, Na 2 SiF 6 4 copies, C 2 Cl 6 1.0 parts, graphite 15 parts, peat soil 20 parts, DyF 3 3 parts, CeF 3 2 servings.

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

[0033] S1: Soak graphite in 33% 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 the peat soil with 33% hydrochloric acid for 4 hours, then filter, then dry at a high temperature of 500°C for 40 minutes, cool and pulverize, and pass through a 10-mesh sieve;

[0035] S3: NaCl, CaS, A1F 3 13 parts, MgF 2 , Mg 2 N 3 、Na 3 A1F 6 、Na 2 SiF 6 、C 2 Cl 6 、DyF 3 , CeF 3 The p...

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Abstract

The invention discloses an aluminum and aluminum alloy smelting refining agent and a preparation method thereof, and belongs to the technical field of aluminum alloy processing. The refining agent comprises the following components of, in parts by weight, 40-60 parts of NaCl, 12-18 parts of CaS, 8-16 parts of A1F3, 4-8 parts of MgF2, 8-15 parts of Mg2N3, 3-11 parts of Na3A1F6, 4-8 parts of Na2SiF6, 0.5-1.0 part of C2Cl6, 15-25 parts of graphite, 10-20 parts of peat soil, 2-6 parts of DyF3, and 2-8 parts of CeF3. The raw material of the refining agent contains the graphite, the peat soil as well as a rare-earth compound, the thus air removing and slag removing capacities of the refining agent can be improved, the content of hydrogen in aluminum alloy melt is low, and the slag removing rateis high. According to the refining agent, the preparation method of aluminum alloy is simple, air removing and slag removing effects are good, 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 and aluminum alloy melting and 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...

Claims

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Application Information

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IPC IPC(8): C22C1/06C22C1/02C22C21/00C22B21/06
CPCC22C1/06C22B21/062C22C1/026C22C21/00
Inventor 王再青
Owner 王再青
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