Low-cost high-plasticity soluble magnesium alloy material and preparation method thereof

A magnesium alloy, high plasticity technology, applied in the field of metal materials, can solve the problems of low corrosion rate, high production cost, poor plasticity, etc., and achieve the effect of low cost, fast dissolution, and good plasticity

Active Publication Date: 2020-03-27
大同高镁科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing magnesium alloy materials have low corrosion rate and poor plasticity, which cannot meet the actual needs of oil and gas mining tools, and the production cost is high. It is necessary to provide a new type of magnesium alloy material with high plasticity, high strength and good corrosion rate. and low production costs to meet the needs of the oil and gas industry

Method used

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  • Low-cost high-plasticity soluble magnesium alloy material and preparation method thereof
  • Low-cost high-plasticity soluble magnesium alloy material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: Mg-3Al-1Zn-0.5Mn-0.1Ca-0.3Ni-0.1Si-0.15Sn alloy

[0024] Weigh the required alloy raw materials in proportion, add pure magnesium into the crucible to melt at 750 ° C, and pass through gas protection, sprinkle refining agent, add other metal raw materials after the pure magnesium is completely melted, stir and remove slag, and perform drawing casting, drawing The casting speed was 20 cm / min. Subsequently, the ingot was subjected to homogenization treatment, and the holding temperature was 350° C. for 48 hours. The homogenized ingot was processed into a cylinder for extrusion processing, the extrusion temperature was 320° C., the extrusion speed was 5 mm / s, and the extrusion ratio was 5. After extrusion, the rods are subjected to aging treatment at a temperature of 170°C for 48 hours.

[0025] The room temperature tensile strength of the Mg-3Al-1Zn-0.5Mn-0.1Ca-0.3Ni-0.1Si-0.15Sn alloy obtained by the above steps is 300MPa, the yield strength is 218MPa, and t...

Embodiment 2

[0026] Example 2: Mg-9Al-0.7Zn-0.3Mn-0.3Ca-0.2Ni-0.2Si alloy

[0027] Weigh the required alloy raw materials in proportion, add pure magnesium to the crucible to melt at 780 ° C, and pass through gas protection, sprinkle refining agent, add other metal raw materials after the pure magnesium is completely melted, stir and remove slag, and perform drawing casting, drawing The casting speed was 20 cm / min. Subsequently, the ingot was subjected to homogenization treatment, and the holding temperature was 400° C. for 40 hours. The homogenized ingot was processed into a cylinder for extrusion processing, the extrusion temperature was 340° C., the extrusion speed was 2 mm / s, and the extrusion ratio was 5. After extrusion, the rods are subjected to aging treatment at a temperature of 150°C for 36 hours.

[0028] The room temperature tensile strength of the Mg-9Al-0.7Zn-0.3Mn-0.3Ca-0.2Ni-0.2Si alloy obtained by the above steps is 306 MPa, the yield strength is 217 MPa, and the elongat...

Embodiment 3

[0029] Example 3: Mg-5Al-0.8Zn-0.25Mn-0.5Ca-0.1Ni-0.6Sn alloy

[0030] Weigh the required alloy raw materials in proportion, add pure magnesium into the crucible to melt at 800 ° C, and pass through the gas protection, sprinkle refining agent, after the pure magnesium is completely melted, add other metal raw materials, stir and remove slag, and perform drawing casting, drawing The casting speed was 15 cm / min. Subsequently, the ingot was subjected to homogenization treatment, the holding temperature was 350° C., and the time was 30 h. The homogenized ingot was processed into a cylinder for extrusion processing, the extrusion temperature was 380° C., the extrusion speed was 1 mm / s, and the extrusion ratio was 8. After extrusion, the rods are subjected to aging treatment at a temperature of 200°C for 30 hours.

[0031] The room temperature tensile strength of the Mg-5Al-0.8Zn-0.25Mn-0.5Ca-0.1Ni-0.6Sn alloy obtained by the above steps is 286 MPa, the yield strength is 184 MPa, ...

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Abstract

The invention discloses a low-cost high-plasticity soluble magnesium alloy material and a preparation method thereof. The magnesium alloy comprises the components of MgAlZn<c>Mn<d>Ca<e>Ni<f>Si<g>Sn<h>, wherein a, b, c, d, e, f, g and h represent the mass fraction of each element, b ranges from 0.5%-15%, c is in the range of 0.1%-6%, d is in the range of 0.05%-2%, e is in the range of 0.01%-3%, f is in the range of 0.01%-6%, g is in the range of 0%-2%, h is in the range of 0%-5%, and the sum of a, b, c, d, e, f, g, and h is equal to 100%; and after smelting, casting, homogenization treatment, hot extrusion and aging treatment are carried out, the required alloy material is obtained. According to the low-cost high-plasticity soluble magnesium alloy material and the preparation method thereof, compared with the prior art, the magnesium alloy material prepared by the components and the process is adopted, the cost is low, the production is convenient and fast, a finished product hasgood strength and high plasticity, and can be rapidly dissolved in a solution containing a microscale electrolyte, the low-cost high-plasticity soluble magnesium alloy material is suitable for a soluble downhole tool used in oil processing and preparing and gas field fracturing process, the downhole tool prepared by the material is adopted and can be self-dissolved after service is finished, the subsequent procedures such as flowback, drilling and milling can be omitted, the construction efficiency is greatly improved, the construction cost is saved, and the energy consumption is reduced.

Description

technical field [0001] The invention relates to the preparation of a magnesium alloy material in the field of metal materials, in particular to a low-cost high-plasticity soluble magnesium alloy material and a preparation method thereof. Background technique [0002] Most of China's low-permeability oil and gas resources are distributed in formations of different depths, and the development of these unconventional oil and gas resources must rely on reservoir stimulation technologies such as hydraulic fracturing. In the hydraulic fracturing technology, isolation tools (such as fracturing balls and bridge plugs) are used to separate different intervals and perform fracturing reconstruction layer by layer. After the construction of all intervals is completed, the isolation tools are discharged so that Open the well to realize the exploitation of oil and gas. [0003] At present, most commonly used isolation tools are made of steel, aluminum alloy, polymer materials, etc. These...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/00C22C23/02C22C23/04C22C1/03C22F1/06
CPCC22C23/00C22C23/02C22C23/04C22C1/03C22F1/06
Inventor 仝仲盛白玉凤仝仲强李宏祥张济山
Owner 大同高镁科技有限公司
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