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Material for changing alloy phase and preparation method of material

An alloy phase and alloy technology, which is applied in the field of changing alloy phase materials and their preparation, can solve the problems of inability to undergo simultaneous metamorphic treatment and poor effect of modifiers, so as to eliminate the reduction of catalytic activity, improve the efficiency of metamorphic treatment, and improve wear resistance. sexual effect

Inactive Publication Date: 2019-06-11
ANHUI POLYTECHNIC UNIV MECHANICAL & ELECTRICAL COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The technical problem to be solved by the present invention: Aiming at the problem that in the current ADC12 aluminum alloy smelting process, simultaneous metamorphic treatment and slag removal and degassing cannot be performed, and the effect of commonly used modificators is not good, the present invention provides a material for changing the alloy phase to solve the above problems

Method used

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  • Material for changing alloy phase and preparation method of material
  • Material for changing alloy phase and preparation method of material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1: prepare the material that changes alloy phase as follows:

[0031] 1. Preparation of raw materials:

[0032] The composition of biotite powder is: 0.14wt% Na 2 O, 6.64wt% MgO, 6.67wt% Al 2 o 3 , 9.18 wt% K 2 O, 2.43wt% S, 2.93wt% P, 5.23wt% FeO, balance SiO 2 ; The particle size of biotite powder is 40 mesh.

[0033] The composition of ADC12 alloy is: Si 10wt%, Fe 0.8wt%, Cu 1.6wt%, Mg 0.1wt%, Mn0.6wt%, Zn0.5wt%, Ni 0.6wt%, Sn 0.08wt%, impurity content ≤ 0.2 wt%, the balance is Al.

[0034] The purity of sodium thiosulfate, aluminum sulfate, aluminum nitrate, sodium acetate, sodium nitrate, aluminum oxide, potassium chloride, sodium chloride, praseodymium nitrate, phosphotungstic acid, zirconium carbide, and strontium carbonate is greater than 99.95wt%, and the particle size It is 50 mesh.

[0035] Second, the preparation of materials that change the alloy phase

[0036] (1) The rare earth compound was prepared as follows: add 200g of biotite powd...

Embodiment 2

[0043] Embodiment 2: prepare the material that changes alloy phase as follows:

[0044] 1. Preparation of raw materials:

[0045] Biotite powder composition: 0.33wt% Na 2 O, 11.92wt% MgO, 8.23wt% Al 2 o 3 , 11.32 wt% K 2 O, 2.43wt% S, 2.93wt% P, 8.33wt% FeO, balance SiO 2 ; The particle size of biotite powder is 60 mesh.

[0046] The composition of ADC12 alloy is: Si 11wt%, Fe 1wt%, Cu 2.0wt%, Mg 0.1wt%, Mn0.6wt%, Zn0.9wt%, Ni 0.8wt%, Sn 0.22wt%, impurity content ≤0.2wt %, the balance is Al.

[0047] The purity of sodium thiosulfate, aluminum sulfate, aluminum nitrate, sodium acetate, sodium nitrate, aluminum oxide, potassium chloride, sodium chloride, praseodymium nitrate, phosphotungstic acid, zirconium carbide, and strontium carbonate is greater than 99.95wt%, and the particle size It is 100 mesh.

[0048] Second, the preparation of materials that change the alloy phase

[0049] (1) The rare earth compound was prepared as follows: 210g of biotite powder and 25g of ...

Embodiment 3

[0056] Embodiment 3: prepare the material that changes alloy phase as follows:

[0057] 1. Preparation of raw materials:

[0058] The composition of biotite powder is: 0.23wt% Na 2 O, 8.98wt% MgO, 7.21wt% Al 2 o 3 , 10.21 wt% K 2 O, 2.43wt% S, 2.93wt% P, 6.77wt% FeO, balance SiO 2 ; The particle size of biotite powder is 50 mesh.

[0059] The composition of ADC12 alloy is: Si 10.5wt%, Fe 0.9wt%, Cu 1.8wt%, Mg 0.1wt%, Mn0.6wt%, Zn 0.7wt%, Ni 0.7wt%, Sn 0.15wt%, impurity content ≤ 0.2wt%, the balance is Al.

[0060] The purity of sodium thiosulfate, aluminum sulfate, aluminum nitrate, sodium acetate, sodium nitrate, aluminum oxide, potassium chloride, sodium chloride, praseodymium nitrate, phosphotungstic acid, zirconium carbide, and strontium carbonate is greater than 99.95wt%, and the particle size It is 70 mesh.

[0061] Second, the preparation of materials that change the alloy phase

[0062] (1) The rare earth complex was prepared as follows: 205g of biotite powder...

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Abstract

The invention discloses a material for changing an alloy phase. The material is composed of the following components of, by weight, 13%-18% of sodium thiosulfate, 4%-9% of aluminum sulfate, 0.6%-1.2%of aluminum nitrate, 5%-11% of sodium acetate, 13%-16% of sodium nitrate, 3%-7% of alumina, 2%-6% of potassium chloride, 15%-19% of biotite composite powder and the balance sodium chloride; and rare earth compounds can change the form and size of harmful phases formed by impurity elements, thus, hazard of impurity phases is reduced, and the refinement and modification effects are improved in an assisted mode. Praseodymium nitrate and phosphotungstic acid react in an ethanol system, rare earth phosphotungstate is formed, biotite powder is used as a carrier of the rare earth phosphotungstate, the defect that the catalytic activity of the rare earth element, namely praseodymium is reduced at high temperature can be overcome, rare earth elements, namely praseodymium and strontium in the biotite compound powder can effectively refine coarse primary silicon, the biotite powder helps in removing gas and slag, therefore, the material prepared through the method can remove gas and slag while conducting the modification treatment, and the smelting efficiency is improved.

Description

technical field [0001] The invention relates to the field of alloy modifiers, in particular to a material for changing alloy phases and a preparation method thereof. Background technique [0002] The silicon phase in the Al-Si alloy eutectic will grow into sheets under spontaneous growth conditions, and even coarse polygonal plate-shaped silicon phases will appear. These silicon phases will severely split the Al matrix. Stress concentration is caused, the alloy is easy to form cracks along the grain boundaries, or the plate-shaped Si itself cracks, making 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 alloys, modification technology has been used for a long time. [0003] Elements that have a modification effect on eutectic silicon include: sodium (Na), strontium (Sr), sulfur (S), lanthanum (L...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/06C22C1/02C22C21/04
Inventor 赵浩峰夏俊张椿英于鹏
Owner ANHUI POLYTECHNIC UNIV MECHANICAL & ELECTRICAL COLLEGE
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