Low-temperature soluble aluminum alloy and application

An aluminum alloy and low-temperature technology, which is applied in the field of preparation and low-temperature soluble aluminum alloys, can solve the problems of increased production risk, brittle fracture, poor low temperature resistance, etc. Ingot grain size, effect of reducing ingot segregation

Active Publication Date: 2022-07-15
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the soluble aluminum alloy all-metal bridge plug expansion ring is used in a low temperature environment, the material dissolution rate is slowed down due to the low temperature, and the controllability is poor, which seriously affects the production efficiency, and even requires manual removal of the blocked metal, which increases the production risk
At the same time, when the soluble aluminum alloy material is used at low temperature, due to its poor low temperature resistance, it is prone to brittle fracture, and its mechanical properties such as strength, plasticity, and toughness decrease sharply, which limits its application range.

Method used

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Examples

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preparation example Construction

[0024] The low-temperature soluble aluminum alloy used in the present invention is composed of elements in weight percentages: Mg 1.5wt%, Ga1wt%, In 0.7wt%, Sn 1wt%, and the balance is Al and inevitable impurity elements; low-temperature soluble The tensile strength of the aluminum alloy is 390-460 MPa, and the elongation is 12-20%; the preparation method thereof includes:

[0025] Step 1), each element is weighed according to the proportion by weight, Mg is introduced with Al-Mg master alloy, Ga is introduced with Al-Ga master alloy, In is introduced with Al-In master alloy, Sn is introduced with Al-Sn master alloy, Insufficient AL is introduced with pure aluminum ingots;

[0026] Step 2), smelting and casting: under the protection of argon, the pure aluminum ingot is heated and melted, and when the molten temperature reaches 715-735 ° C, Al-Mg master alloy, Al-Ga master alloy, and Al-In master alloy are added in turn. , Al-Sn master alloy, smelted at 720-760℃, kept for 40-6...

Embodiment 1

[0035] Low temperature soluble aluminum alloy, in weight percentage, each element composition: Mg 1.5wt%, Ga 1wt%, In0.7wt%, Sn 1wt%, the balance is Al and inevitable impurity elements.

[0036] Its preparation method is as follows:

[0037] Step 1), weighing raw materials according to the above-mentioned proportions: weighing pure aluminum ingot, Al-Mg master alloy, Al-Ga master alloy, Al-In master alloy, and Al-Sn master alloy.

[0038]After weighing the raw material, sand the surface of the raw material to remove the surface oxide layer.

[0039] Step 2), smelting and casting: under the protection of argon, first place pure aluminum in a melting furnace for heating and melting, and when the temperature of the melt rises to 715° C., add Al-Mg master alloy, Al-Ga master alloy, and Al in turn. -In master alloy and Al-Sn master alloy, continue to heat up to 720°C for smelting, keep warm for 40min, stir for 5min; add impurity remover and slagging agent to remove impurities and ...

Embodiment 2

[0048] Low temperature soluble aluminum alloy, in weight percentage, each element composition: Mg 1.5wt%, Ga 1wt%, In0.7wt%, Sn 1wt%, the balance is Al and inevitable impurity elements.

[0049] Its preparation method is as follows:

[0050] Step 1), weigh the raw materials according to the above proportions: weigh out pure aluminum ingot, Al-Mg master alloy, Al-Ga master alloy, Al-In master alloy, and Al-Sn master alloy.

[0051] After weighing the raw material, sand the surface of the raw material to remove the surface oxide layer.

[0052] Step 2), smelting and casting: under the protection of argon, pure aluminum is first heated and melted in a melting furnace, and when the melt temperature rises to 725°C, Al-Mg master alloy, Al-Ga master alloy, and Al-In are added in sequence. Master alloy and Al-Sn master alloy, continue to heat up to 740℃ for smelting, keep warm for 50min, stir for 7.5min; add impurity remover and slagging agent to remove impurities and refine for 25mi...

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Abstract

The invention discloses a low-temperature soluble aluminum alloy and application thereof, and the aluminum alloy comprises the following elements in percentage by weight: 1.5 wt% of Mg, 1wt% of Ga, 0.7 wt% of In, 1wt% of Sn, and the balance of Al and inevitable impurity elements. The tensile strength of the steel plate is 390-460 MPa, and the ductility of the steel plate is 12-20%. The soluble aluminum alloy is obtained by carrying out homogenization treatment, hot extrusion treatment, solution treatment and aging treatment on the components after smelting and ingot casting. The soluble aluminum alloy material can be used as a material of a fracturing tool for shale oil and gas exploitation. The prepared low-temperature soluble aluminum alloy has a low-temperature phase, can be used in a low-temperature environment, and is soluble at low temperature and controllable in solubility.

Description

technical field [0001] The invention belongs to the technical field of alloy preparation, in particular to a low-temperature soluble aluminum alloy, a preparation method and an application. Background technique [0002] After the oil and gas exploration in recent years, my country has abundant unconventional oil and gas resources, among which the reserves of shale gas and shale oil rank among the top in the world. It is necessary to rely on technologies such as hydraulic fracturing, among which the development of bridge plugs is one of the most important technologies in multi-layer and multi-stage staged fracturing technology. Tools made of soluble materials can dissolve in the underground environment by themselves after completing the operation, eliminating the need for manual drilling, grinding and recycling processes, reducing engineering risks and improving construction efficiency. [0003] The expansion ring is a component that can fix objects by expanding and contracti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/06C22C1/03C22F1/047C22C1/06
CPCC22C21/06C22C1/026C22C1/03C22F1/047C22C1/06C22F1/002Y02P10/20
Inventor 马宁常柯朱建锋郭恒鹏冀时雨张科秦毅
Owner SHAANXI UNIV OF SCI & TECH
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