Method for refining grain capable of dissolving aluminum alloy material

A technology for aluminum alloy materials and strengthening alloys, which is applied in the field of refining the grains of dissolvable aluminum alloy materials to achieve uniform dissolution, increase yield strength, and reduce cracks.

Active Publication Date: 2017-06-13
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to overcome the deficiencies of the above-mentioned prior art, the object of the present invention is to provide a method for refining the grains of soluble aluminum alloy materials, to improve the macro segregation, pores and Cracks and other problems that affect the strength of the material, by adding high-frequency low-amplitude mechanical vibration and high-frequency narrow-pulse width magnetic field during the casting process of the material, a specific electromagnetic induction effect is generated at the solid-liquid interface of the aluminum alloy, and the fineness of the aluminum alloy is refined. Microstructure, to improve the mechanical strength of the material

Method used

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  • Method for refining grain capable of dissolving aluminum alloy material
  • Method for refining grain capable of dissolving aluminum alloy material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Step 1. Put the aluminum ingot into the melting furnace and raise the temperature to 710°C to melt it into molten aluminum;

[0020] Step 2: Add 87.7wt% of the aluminum liquid obtained in step 1 to the prefabricated functional alloy (Al-Ga) 2wt%, strengthening alloy (Mg-Si-Mn) 5wt%, low-temperature alloy (Al-In) 0.3wt% according to the formula 87.7wt% wt% and activated alloy (Al-Mg-Sn-Zn) 5wt%, fully stirred, and kept at 710°C for 10min to make it a melt with macroscopically uniform properties;

[0021] Step 3. Add 0.6wt% defoamer to the melt obtained in step 2 and perform a slag removal process. Place the preheated mold in an oscillating magnetic field and cast it. The mechanical vibration frequency is 600 Hz, and the magnetic induction of the external magnetic field is It is 10T, and the casting is obtained;

[0022] Step 4. After cooling the casting obtained in Step 3 to room temperature, solid solution at 450°C for 6 hours, then cool in the furnace, then age at 250...

Embodiment 2

[0024] Step 1. Put the aluminum ingot into the melting furnace and raise the temperature to 710°C to melt it into molten aluminum;

[0025] Step 2: Add 1.5wt% of the prefabricated functional alloy (Al-Ga), 3wt% of the strengthening alloy (Mg-Si-Mn), and 0.5wt% of the low-temperature alloy (Al-In) to the aluminum liquid obtained in the step 1 according to the formula 90wt%. wt% and activated alloy (Al-Mg-Sn-Zn) 5wt%, fully stirred, and kept at 760 ° C for 20 minutes to make it a melt with macroscopically uniform properties;

[0026] Step 3. Add 0.6wt% defoamer to the melt obtained in step 2 and perform a slag removal process. Place the preheated mold in an oscillating magnetic field and cast it. The mechanical vibration frequency is 600 Hz, and the magnetic induction of the external magnetic field is For 15T, get the casting;

[0027] Step 4. After cooling the casting obtained in Step 3 to room temperature, solid solution at 430°C for 12 hours, then cool in the furnace, then a...

Embodiment 3

[0029] Step 1. Put the aluminum ingot into the melting furnace and raise the temperature to 760°C to melt it into molten aluminum;

[0030] Step 2. Add 65wt% of the aluminum liquid obtained in step 1 to the prefabricated functional alloy (Al-Ga) 6wt%, strengthening alloy (Mg-Si-Mn) 10wt%, and low-temperature alloy (Al-In) 8.5wt% in sequence according to the formula 65wt% % and activated alloy (Al-Mg-Sn-Zn) 10.5wt%, fully stirred, and kept at 760 ° C for 10 minutes to make it a melt with macroscopically uniform properties;

[0031] Step 3. Add 0.6wt% defoamer to the melt obtained in step 2 and perform a slag removal process. Place the preheated mold in an oscillating magnetic field and cast it. The mechanical vibration frequency is 600 Hz, and the magnetic induction of the external magnetic field is For 6T, get the casting;

[0032] Step 4. After cooling the casting obtained in Step 3 to room temperature, solid solution at 460°C for 6 hours, then cool in the furnace, then age ...

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Abstract

A method for refining a grain capable of dissolving an aluminum alloy material includes the steps of adding an aluminum ingot into an induction heater, obtaining molten aluminum by rising the temperature and fusing, sequentially adding a pre-prepared function alloy, a pre-prepared reinforced alloy, a pre-prepared cryogenic alloy and a pre-prepared activated alloy, fully mixing and conducting hot insulation, obtaining a solution provided with macroscopic and uniform properties, adding a defoaming agent and conducting deslagging process, placing a preheated mould in an oscillating magnetic field, molding and obtaining a casting by conducting mechanical vibration and adopting an external magnetic field with certain magnetic induction intensity, conducting heat treatment after rapid cooling of the casting, and processing the casting into a standard component needed in an experiment. The method for refining the grain capable of dissolving the aluminum alloy material has the characteristics that the strength of the material is improved to meet the requirement for the strength of practical applications.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy material preparation, in particular to a method for refining soluble aluminum alloy material grains. Background technique [0002] The advanced technology in the exploitation of unconventional oil and gas fields in the world is multi-layer and multi-stage hydraulic fracturing technology, which uses a large number of downhole tools in the process of exploitation. Soluble materials can be used to manufacture such downhole tools, which can meet the basic application performance requirements during use, especially under complex external conditions, can withstand high temperature and high pressure during working hours, and can be used in situ after the fracturing work is completed. Dissolving, without grinding or flowback, makes the oil and gas pipeline unimpeded, greatly saves manpower, material and financial resources, and greatly improves the speed of project progress. [0003] At present, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C1/06
CPCC22C1/026C22C1/03C22C1/06
Inventor 侯小江苟永妮朱建锋秦毅卢博李文君王芬
Owner SHAANXI UNIV OF SCI & TECH
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