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Magnesium alloy solder based on rare earth magnesium alloy brazing, preparation method and brazing process

A brazing process, rare earth magnesium technology, applied in manufacturing tools, welding equipment, metal processing equipment, etc., can solve the problem of low performance of magnesium alloy brazing joints, and achieve excellent connection performance, less impurities, and reduced residual stress. Effect

Active Publication Date: 2018-01-30
JIANGSU YANGMING SHIP EQUIP MFG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, Mg-Al-Zn solder has been used in the welding of AZ magnesium alloys, but the strength of welded joints needs to be further improved
[0004] At present, the performance of magnesium alloy brazing joints is relatively low, far lower than the performance of magnesium alloy matrix materials (σ>200MPa)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The composition and mass percentage ratio of the solder are: 9.0% Zn, 8.8% Al, 3.8% Ni, 2.5% Ag, 1.0% Ti, 2.0% Cu, 0.6% Mn, Mg72.3%.

[0032] Above-mentioned a kind of preparation method based on the magnesium alloy solder of rare earth magnesium alloy brazing comprises the following steps:

[0033]1) Weigh high-purity Zn, Al, Ni, Ag, Ti, Cu, Mn and Mg blocks by mass percentage to prepare a mixture, put them into a container with acetone, and perform ultrasonic cleaning at room temperature for 20 minutes;

[0034] 2) drying the mixture after ultrasonic cleaning in step 1 at a temperature of 30° C. to obtain a dried mixture;

[0035] 3) Put the mixture Zn, Al, Ni, Ag, Ti, Cu, Mn and Mg into a proprietary quartz glass tube, install it in the high-frequency induction heating coil of the stripping machine, and spray it onto the surface of the copper roller The spacing is adjusted to 0.2mm;

[0036] 4) Close the furnace door, and use a mechanical pump to evacuate to 1.5×10...

Embodiment 2

[0047] The composition and mass percentage ratio of the solder are: 10% Zn, 8.5% Al, 4.5% Ni, 2.0% Ag, 1.4% Ti, 1.5% Cu, 0.8% Mn, 71.3% Mg.

[0048] Above-mentioned a kind of preparation method based on the magnesium alloy solder of rare earth magnesium alloy brazing comprises the following steps:

[0049] 1) Weigh high-purity Zn, Al, Ni, Ag, Ti, Cu, Mn and Mg blocks by mass percentage to prepare a mixture, put them into a container with acetone, and perform ultrasonic cleaning at room temperature for 15 minutes;

[0050] 2) drying the mixture after ultrasonic cleaning in step 1 at a temperature of 40° C. to obtain a dried mixture;

[0051] 3) Put the mixture Zn, Al, Ni, Ag, Ti, Cu, Mn and Mg into a proprietary quartz glass tube, install it in the high-frequency induction heating coil of the stripping machine, and spray it onto the surface of the copper roller The spacing is adjusted to 0.1mm;

[0052] 4) Close the furnace door, and use a mechanical pump to evacuate to 1.5×1...

Embodiment 3

[0063] The composition and mass percentage ratio of the solder are: 11% Zn, 8.2% Al, 5.2% Ni, 1.5% Ag, 1.8% Ti, 1.0% Cu, 1.0% Mn, Mg70.3%.

[0064] Above-mentioned a kind of preparation method based on the magnesium alloy solder of rare earth magnesium alloy brazing comprises the following steps:

[0065] 1) Weigh high-purity Zn, Al, Ni, Ag, Ti, Cu, Mn and Mg blocks by mass percentage to prepare a mixture, put them into a container with acetone, and perform ultrasonic cleaning at room temperature for 20 minutes;

[0066] 2) drying the mixture after ultrasonic cleaning in step 1 at a temperature of 50° C. to obtain a dried mixture;

[0067] 3) Put the mixture Zn, Al, Ni, Ag, Ti, Cu, Mn and Mg into a proprietary quartz glass tube, install it in the high-frequency induction heating coil of the stripping machine, and spray it onto the surface of the copper roller The spacing is adjusted to 0.1mm;

[0068] 4) Close the furnace door, and use a mechanical pump to evacuate to 1.5×10...

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Abstract

The invention discloses a magnesium alloy brazing filler metal based on rare earth magnesium alloy braze as well as a preparation method and a brazing technology of the magnesium alloy brazing filler metal. The magnesium alloy brazing filler metal comprises the following elements in percentage by weight: 8.8%-11.5% of Zn, 8.2%-9.3% of Al, 3.8%-5.5% of Ni, 1.0%-3.0% of Ag, 1.0%-2.0% of Ti, 0.8%-2.2% of Cu, 0.5%-1.0% of Mn and the balance of Mg. The rotary feeding device is moderate in melting temperature and uniform in ingredients; application of a magnesium alloy brazing filler metal chaff facilitates diffusion and interfacial reaction of all alloy elements during the brazed connection process, improves wetting spreadability and gap filling performance of the brazing filler metal in rare earth magnesium alloy, refines grain, reduces residual stress, and improves the bonding strength of joints.

Description

technical field [0001] The invention relates to a magnesium alloy solder based on rare earth magnesium alloy brazing, a preparation method and a brazing process, and belongs to the field of brazing. Background technique [0002] Magnesium and magnesium alloys are currently the lightest materials in metal structure materials (ρ=1.74g / cm 3 ), which has the characteristics of low density, high specific strength, good shock absorption, good electromagnetic shielding, good electrical and thermal conductivity, good processability, good thermoformability, and easy recycling, and is widely favored. With the rapid development of high-tech, in order to achieve green development paths such as light weight, low energy consumption, and environmental protection, significant changes have taken place in the application of metal materials in the world, reducing the application of traditional metal materials, and magnesium alloys are represented. Light metal materials continue to grow. Rese...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/28B23K1/002B23K1/008B23K1/20B23K35/363
CPCB23K1/002B23K1/008B23K1/20B23K1/206B23K35/0233B23K35/284B23K35/3603B23K35/362
Inventor 邹家生杨骏许祥平黄晓龙
Owner JIANGSU YANGMING SHIP EQUIP MFG TECH
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