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Chromium boride-reinforced magnesium alloy wire for cables and its manufacturing method and application

A technology for strengthening magnesium alloy and chromium boride, which is applied in the field of electric power information and communication, can solve the problems that magnesium alloy is not as extensive as aluminum alloy, low absolute strength of magnesium alloy, and poor deformation ability at room temperature, etc., to achieve improved microhardness and high mechanical properties And high temperature creep resistance, the effect of improving strength

Inactive Publication Date: 2017-03-08
STATE GRID SHANDONG ELECTRIC POWER CO LAIYANG POWER SUPPLY CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low absolute strength of magnesium alloys, poor deformation ability at room temperature, easy oxidation, combustion, and corrosion, etc., the wide application of magnesium alloys as structural materials is limited. At present, the application of magnesium alloys is far less than that of aluminum alloys.

Method used

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  • Chromium boride-reinforced magnesium alloy wire for cables and its manufacturing method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] In an embodiment of the present invention, a chromium boride-reinforced magnesium alloy wire for cables is made of the following components in terms of mass percentages: 8% calcium, 0.011% beryllium, 6% aluminum, 0.22% silicon, 0.06% copper, 0.45% molybdenum, 0.06% barium, 0.12% cadmium, 2.1% nickel, 0.16% scandium, 0.05% dysprosium, 14% chromium boride nanoparticles and the rest of magnesium; among them, the particle size of chromium boride nanoparticles is 10~ 35nm.

[0027] The manufacturing method of the magnesium alloy wire reinforced with chromium boride for the cable comprises the following steps:

[0028] (1) Pretreatment of chromium boride nanoparticles, including the following steps:

[0029] 1) According to the mass ratio of chromium boride nanoparticles: acetic acid with a concentration of 1mol / L is 1:15, add acetic acid with a concentration of 1mol / L to the chromium boride nanoparticles for peptization to obtain chromium boride nanoparticles Sol;

[0030...

Embodiment 2

[0039] In the embodiment of the present invention, a chromium boride reinforced magnesium alloy wire for cables is made of the following components in terms of mass percentage: 12% calcium, 0.008% beryllium, 9% aluminum, 0.15% silicon, 0.10% copper, 0.35% molybdenum, 0.08% barium, 0.07% cadmium, 2.5% nickel, 0.12% scandium, 0.08% dysprosium, 12% chromium boride nanoparticles and the rest of magnesium; among them, the particle size of chromium boride nanoparticles is 10~ 35nm.

[0040] The manufacturing method of the chromium boride-reinforced magnesium alloy wire for cables is the same as that in Example 1.

Embodiment 3

[0042] In the embodiment of the present invention, a chromium boride reinforced magnesium alloy wire for cables is made of the following components in terms of mass percentage: 8.8% calcium, 0.0095% beryllium, 7.5% aluminum, 0.21% silicon, 0.07% copper, 0.42% molybdenum, 0.068% barium, 0.11% cadmium, 2.2% nickel, 0.15% scandium, 0.06% dysprosium, 13.0% chromium boride nanoparticles and the rest of magnesium; among them, the particle size of chromium boride nanoparticles is 10~ 35nm.

[0043] The manufacturing method of the magnesium alloy wire reinforced with chromium boride for the cable comprises the following steps:

[0044] (1) Pretreatment of chromium boride nanoparticles, including the following steps:

[0045] 1) According to the mass ratio of chromium boride nanoparticles: acetic acid with a concentration of 6mol / L of 1:10, add acetic acid with a concentration of 6mol / L to the chromium boride nanoparticles for peptization to obtain chromium boride nanoparticles Sol; ...

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Abstract

The invention discloses a chromium diboride-enhanced magnesium alloy wire for a cable and a preparation method and application of the magnesium alloy wire. The magnesium alloy wire is prepared from, by mass, 8%-12% of calcium, 0.008%-0.011% of beryllium, 6%-9% of aluminum, 0.15%-0.22% of silicon, 0.06%-0.10% of copper, 0.35%-0.45% of molybdenum, 0.06%-0.08% of barium, 0.07%-0.12% of cadmium, 2.1%-2.5% of nickel, 0.12%-0.16% of scandium, 0.05%-0.08% of dysprosium, 12%-14% of chromium diboride nanoparticles and the balance magnesium; the particle size of the chromium diboride nanoparticles is 10-35 nm; the chromium diboride-enhanced magnesium alloy wire is prepared through the steps of pretreating of the chromium diboride nanoparticles, preparing of the raw materials, smelting, refining, casting, rolling and drawing. According to the prepared magnesium alloy wire, the strength, the heat resistance and the creep resistance are all significantly improved, and the requirements for the higher mechanical performance and the high-temperature creep resistance can be met.

Description

technical field [0001] The invention relates to the field of electric power information communication, in particular to a chromium boride-reinforced magnesium alloy wire for cables, a manufacturing method and application thereof. Background technique [0002] For a long time, in the cable industry, copper has always been the dominant conductor due to its superior electrical conductivity and heat transfer performance. However, due to the shortage of copper resources and the rapid growth of demand, the price of copper has risen sharply, making the consumer market of copper have been looking for A suitable replacement. [0003] As the lightest commercial metal engineering structural material, magnesium alloy is known as the "21st century" because of its light specific gravity, high specific strength and specific stiffness, strong damping and vibration reduction, excellent liquid forming performance and easy recycling. "Green structural materials" have broad commercial applicat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C23/00C22C32/00C22C1/03C22C1/06C22C1/10C22F1/06
CPCC22C1/1036C22C23/00C22C32/0073C22F1/06
Inventor 胡艳春吴海军马桂岩王建琳
Owner STATE GRID SHANDONG ELECTRIC POWER CO LAIYANG POWER SUPPLY CO