Preparation method of high-strength and high-toughness rapidly-degraded magnesium alloy

A fast-degradation, high-toughness technology, applied in the field of material preparation, can solve problems such as reservoir pollution, downhole accident operation and construction costs, and achieve the effect of increasing degradation rate and improving plasticity and toughness

Active Publication Date: 2017-08-29
TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, after the fracturing is completed, the drillable bridge plug needs to be drilled and milled. During this process, downhole accidents are l

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of high-strength and high-toughness rapidly-degraded magnesium alloy
  • Preparation method of high-strength and high-toughness rapidly-degraded magnesium alloy
  • Preparation method of high-strength and high-toughness rapidly-degraded magnesium alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for preparing a high-strength, high-toughness and rapidly degradable magnesium alloy, using the following raw materials: high-purity magnesium ingot, copper powder, Mg-50%Y master alloy;

[0028] Including the following steps:

[0029] S1. Selected chemical substances and materials

[0030] The quality and purity of the chemical substances used are controlled as follows:

[0031] High-purity magnesium ingot: more than 99.99% solid solid;

[0032] Copper powder: more than 99.9% solid solid;

[0033] Mg-Y master alloy: more than 99.9% solid solid;

[0034] S2, preparation of open and close mold

[0035] Prepare a split mold with stainless steel material, the cavity is cylindrical with a diameter of 90mm, and add a filter screen at the pouring port;

[0036] S3, alloy casting

[0037] Turn on the melting furnace, preheat the crucible to 603°C, and when the crucible turns dark red, sprinkle 101g of molten salt covering agent on the wall and bottom of the cruc...

Embodiment 2

[0044] A method for preparing a high-strength, high-toughness and rapidly degradable magnesium alloy, using the following raw materials: high-purity magnesium ingot, copper powder, Mg-50%Y master alloy;

[0045] Including the following steps:

[0046] S1. Selected chemical substances and materials

[0047] The quality and purity of the chemical substances used are controlled as follows:

[0048] High-purity magnesium ingot: more than 99.99% solid solid;

[0049] Copper powder: more than 99.9% solid solid;

[0050] Mg-Y master alloy: more than 99.9% solid solid;

[0051] S2, preparation of open and close mold

[0052] Prepare a split mold with stainless steel material, the cavity is cylindrical with a diameter of 90mm, and add a filter screen at the pouring port;

[0053] S3, alloy casting

[0054] Turn on the melting furnace, preheat the crucible to 600°C, and when the crucible turns dark red, sprinkle 98g of molten salt covering agent on the wall and bottom of the cruci...

Embodiment 3

[0061] A method for preparing a high-strength, high-toughness and rapidly degradable magnesium alloy, using the following raw materials: high-purity magnesium ingot, copper powder, Mg-50%Y master alloy;

[0062] Including the following steps:

[0063] S1. Selected chemical substances and materials

[0064] The quality and purity of the chemical substances used are controlled as follows:

[0065] High-purity magnesium ingot: more than 99.99% solid solid;

[0066] Copper powder: more than 99.9% solid solid;

[0067] Mg-Y master alloy: more than 99.9% solid solid;

[0068] S2, preparation of open and close mold

[0069] Prepare a split mold with stainless steel material, the cavity is cylindrical with a diameter of 90mm, and add a filter screen at the pouring port;

[0070] S3, alloy casting

[0071] Turn on the melting furnace, preheat the crucible to 604°C, and when the crucible turns dark red, sprinkle 98g of molten salt covering agent on the wall and bottom of the crucibl...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a preparation method of high-strength and high-toughness rapidly-degraded magnesium alloy. The preparation method comprises the following steps: preheating a crucible to be at a temperature of about 600 DEG C, spreading a small amount of molten salt covering agent on the wall and at the bottom of the crucible, adding a pure magnesium block and spreading a layer of molten salt covering agent on the surface of the magnesium block; heating the crucible, preserving heat when the temperature is raised to 720 DEG C, and adding Cu after magnesium is completely molten; raising the temperature of the crucible to 720-725 DEG C, adding Mg-Y intermediate alloy, and stirring while adding; continuing raising the temperature, raising the temperature of the crucible to740 DEG C, and adding a No. 5 magnesium alloy dedicated agent and a tranquilizer; cooling to 700 DEG C by standing, adding an intermediate phase into the alloy, and starting casting to obtain Mg-4Y-2Cu alloy. An LPSO structural phase capable of improving the strength, plasticity and toughness of the alloy as well as a Cu-containing precipitated phase Mg2Cu are formed in the alloy, and a part of Cu is solidified into an Mg matrix, so that the degradation rate of the high-strength and high-toughness rapidly-degraded magnesium alloy is significantly increased.

Description

technical field [0001] The invention relates to the field of material preparation, in particular to a preparation method of a high-strength, high-toughness and rapidly degradable magnesium alloy. Background technique [0002] As the target of oil and gas exploration and development gradually shifts to low-permeability and low-grade resources, the staged fracturing technology of horizontal wells has become an important means for reservoir stimulation and effective increase of single well production. Frac balls and bridge plugs are increasingly used as important tools in fracturing operations. At present, the conventional bridge plugs used mainly include drillable bridge plugs and large diameter bridge plugs. Among them, the drillable bridge plug needs to be drilled and milled after fracturing. During this process, downhole accidents are likely to occur and the operation and construction costs are high. The debris and operating fluid produced at the same time will pollute the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C22C1/03C22C23/06
CPCC22C1/03C22C23/06
Inventor 刘宝胜房大庆王亚宁张代东张跃忠卫英慧侯利锋
Owner TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap