Aluminum alloy refining material and preparation method and application thereof

An aluminum alloy and composite technology, which is applied in the field of aluminum alloy refinement materials and their preparation, can solve the problems of difficult control of the preparation process, inability to undergo simultaneous metamorphic treatment, poor effect of modifiers, etc. Improve the efficiency of metamorphic treatment and save the effect of removing the slag step

Inactive Publication Date: 2019-07-09
ANHUI POLYTECHNIC UNIV MECHANICAL & ELECTRICAL COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The technical problem to be solved by the present invention: Aiming at the problems that in the current smelting process of ZLD101A aluminum alloy, it is impossible to modify and remove slag and gas at the same time, and the commonly used modifiers are not effective and easy to burn, the present invention provides an aluminum alloy refining material , solve the above problems, and at the same time overcome the defects of slow melting of the casting intermediate alloy modifier, long incubation period, and difficult control of the preparation process

Method used

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  • Aluminum alloy refining material and preparation method and application thereof
  • Aluminum alloy refining material and preparation method and application thereof
  • Aluminum alloy refining material and preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0033] Embodiment 1: Aluminum alloy refinement materials were prepared as follows:

[0034] 1. Preparation of raw materials:

[0035] The composition of lepidolite powder is: Al 2 o 3 23.98wt%, H 2 O is 1.22wt%, FeO is 0.34wt%, MgO is 0.02wt%, CaO is 0.32wt%, TiO 2 ≤0.03wt%, K 2 O is 10.10wt%, Na 2 O is 0.05wt%, Li 2 O is 3.55wt%, MnO is 0.29wt%, F is 3.20wt%, Rb 2 O is 0.29wt%, Cs 2 O is 0.22wt%, the balance is SiO 2 , The particle size of lepidolite powder is 80 mesh.

[0036] Potassium fluoroaluminate, sodium fluoroaluminate, disodium hydrogen phosphate hydrate, potassium chloride, sodium chloride, barium acetate, barium nitrate, samarium fluoride, aluminum acetate, aluminum chloride, cryptocrystalline graphite, potassium carbonate, The purity of phosphotungstic acid, samarium nitrate and pure aluminum is greater than 99.9wt%, and the particle size is 100 mesh; the samarium nitrate is samarium nitrate hexahydrate;

[0037] ZLD101A aluminum alloy composition by we...

Embodiment 2

[0047] Embodiment 2: Aluminum alloy refined material is prepared as follows:

[0048] 1. Preparation of raw materials:

[0049] The composition of lepidolite powder is: Al2 o 3 28.34wt%, H 2 O is 2.09wt%, FeO is 1.08wt%, MgO is 0.09wt%, CaO is 1.22wt%, TiO 2 ≤0.03wt%, K 2 O is 12.45wt%, Na 2 O is 0.25wt%, Li 2 O is 4.07wt%, MnO is 0.89wt%, F is 4.90wt%, Rb 2 O is 0.42wt%, Cs 2 O is 0.63wt%, the balance is SiO 2 , The particle size of lepidolite powder is 100 mesh.

[0050] Potassium fluoroaluminate, sodium fluoroaluminate, disodium hydrogen phosphate hydrate, potassium chloride, sodium chloride, barium acetate, barium nitrate, samarium fluoride, aluminum acetate, aluminum chloride, cryptocrystalline graphite, potassium carbonate, The purity of phosphotungstic acid, samarium nitrate and pure aluminum is greater than 99.9wt%, and the particle size is 150 mesh; the samarium nitrate is samarium nitrate hexahydrate;

[0051] ZLD101A aluminum alloy composition by weight pe...

Embodiment 3

[0061] Embodiment 3: Aluminum alloy refinement materials were prepared as follows:

[0062] 1. Preparation of raw materials:

[0063] The composition of lepidolite powder is: Al 2 o 3 26.12wt%, H 2 O is 1.69wt%, FeO is 0.75wt%, MgO is 0.05wt%, CaO is 0.81wt%, TiO 2 ≤0.03wt%, K 2 O is 11.33wt%, Na 2 O is 0.14wt%, Li 2 O is 3.84wt%, MnO is 0.57wt%, F is 4.11wt%, Rb 2 O is 0.35wt%, Cs 2 O is 0.41wt%, the balance is SiO 2 , The particle size of lepidolite powder is 90 mesh.

[0064] Potassium fluoroaluminate, sodium fluoroaluminate, disodium hydrogen phosphate hydrate, potassium chloride, sodium chloride, barium acetate, barium nitrate, samarium fluoride, aluminum acetate, aluminum chloride, cryptocrystalline graphite, potassium carbonate, The purity of phosphotungstic acid, samarium nitrate and pure aluminum is greater than 99.9wt%, and the particle size is 130 mesh; the samarium nitrate is samarium nitrate hexahydrate;

[0065] ZLD101A aluminum alloy composition by we...

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Abstract

The invention discloses an aluminum alloy refining material and a preparation method and an application thereof and relates to the field of aluminum alloy modifiers. The aluminum alloy refining material comprises the following raw materials in percentage by weight: 5-8% of potassium fluoroaluminate, 7-11% of sodium fluoroaluminate, 3-5% of disodium hydrogen phosphate hydrate, 5-7% of potassium chloride, 4-8% of sodium chloride, 0.4-0.8% of barium acetate, 3-6% of barium nitrate, 0.2-0.9% of samarium fluoride, 0.2-0.9% of aluminum acetate, 6-8% of aluminum chloride, 15-20% of lepidolite compound powder and the balance of pure aluminum. The aluminum alloy refining material has the beneficial effects that the four modifiers of barium, sodium, lithium and samarium are combined according to thecharacteristics and a sintered body with a loose structure is prepared by adopting spray deposition and extrusion calcination in one step, so that the metamorphic activity is effectively retained andthe material has the characteristics of short metamorphic incubation period, long effective metamorphic time and stable metamorphic effect; and the lepidolite powder can serve as a modifier carrier for degassing and slag removal and the alloy hardness can be significantly increased by utilizing high hardness matters contained in the lepidolite powder.

Description

technical field [0001] The invention relates to the field of aluminum alloy modifiers, in particular to an aluminum alloy refining material and a preparation method thereof. Background technique [0002] The silicon structure of aluminum alloy is composed of coarse five-lobed star-shaped primary silicon and long needle-shaped eutectic silicon. These silicon phases will severely split the Al matrix and cause stress concentration at the tip and corners of the Si phase. The alloy is easy to form cracks along the grain boundaries, or the plate-shaped Si itself cracks, which makes the alloy brittle, the mechanical properties, especially the elongation, are significantly reduced, and the cutting performance is not good. In order to change the existing state of silicon and improve the mechanical properties of the alloy, a modifier is generally added to the alloy to refine the primary silicon and eutectic silicon. [0003] There are many studies on aluminum alloy modifiers at home ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/06C22C1/03C22C21/04
CPCC22C1/026C22C1/03C22C1/06C22C21/04
Inventor 赵浩峰张椿英于鹏郑建华
Owner ANHUI POLYTECHNIC UNIV MECHANICAL & ELECTRICAL COLLEGE
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