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Brazing rare earth magnesium alloy filler metal, preparation method and brazing process

A technology of alloy brazing filler metal and brazing process, applied in manufacturing tools, welding equipment, metal processing equipment, etc., can solve the problem of low performance of magnesium alloy brazing joints, achieve excellent connection performance, less impurities, and reduce 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 solder are: Zn14.5, Ni2.8%, Al2.0%, Ti0.8%, Cu5.4%, Mn0.6%, La0.004%, Nd0.006%, Mg73.89%.

[0032] The above-mentioned preparation method of brazing rare earth magnesium alloy filler metal comprises the following steps:

[0033]1) Weigh high-purity Zn, Al, Ni, Ti, Cu, Mn, La, Nd 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, Ti, Cu, Mn, La, Nd and Mg into a proprietary quartz glass tube, install it in the high-frequency induction heating ring of the stripping machine, and spray it to the copper The roller surface spacing is adjusted to 0.2mm;

[0036] 4) Close the furnace door, and use a mechanical pump to evacuate to 1.5×10 -1 Pa, and then use a mol...

Embodiment 2

[0047] The composition and mass percentage ratio of solder are: Zn16%, Ni2.2%, Al3.0%, Ti0.6%, Cu6.0%, Mn0.5%, La0.005%, Nd0.005%, Mg71 .69%.

[0048] The above-mentioned preparation method of brazing rare earth magnesium alloy filler metal comprises the following steps:

[0049] 1) Weigh high-purity Zn, Al, Ni, Ti, Cu, Mn, La, Nd 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, Ti, Cu, Mn, La, Nd and Mg into a proprietary quartz glass tube, install it in the high-frequency induction heating ring of the stripping machine, and spray it to the copper The roller surface spacing is adjusted to 0.1mm;

[0052] 4) Close the furnace door, and use a mechanical pump to evacuate to 1.5×10 -1 Pa, and then use a mo...

Embodiment 3

[0063] The composition and mass percentage ratio of solder are: Zn17.5%, Ni1.6%, Al4.0%, Ti0.4%, Cu6.6%, Mn0.4%, La0.006%, Nd0.004% , Mg69.49%.

[0064] The above-mentioned preparation method of brazing rare earth magnesium alloy filler metal comprises the following steps:

[0065] 1) Weigh high-purity Zn, Al, Ni, Ti, Cu, Mn, La, Nd 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, Ti, Cu, Mn, La, Nd and Mg into a proprietary quartz glass tube, install it in the high-frequency induction heating ring of the stripping machine, and spray it to the copper The roller surface spacing is adjusted to 0.1mm;

[0068] 4) Close the furnace door, and use a mechanical pump to evacuate to 1.5×10 -1 Pa, and then use a ...

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Abstract

The invention discloses brazing rare earth magnesium alloy brazing filler metal and a preparation method and a brazing process. The brazing rare earth magnesium alloy brazing filler metal comprises the following element components in percentage by weight: 13-19% of Zn, 1.0-3.0% of Ni, 1.8-4.4% of Al, 0.4-1.0% of Ti, 5.1-7.0% of Cu, 0.3-0.8% of Mn, 0.004-0.01% of La, 0.004-0.01% of Nd, and the balance of Mg. The magnesium alloy brazing filler metal reaches the brazing temperature of 420-460 DEG C, and is proper in melting temperature and uniform in components; and a magnesium alloy brazing filler metal foil piece facilitates acceleration of dispersion and interface reaction of all alloy elements in the brazing connecting process, so that the wetting spreadability and the gap filling performance of the brazing filler metal in a rare earth magnesium alloy are improved, the grains are refined, the residual stress is reduced, and the joint bonding strength is improved.

Description

technical field [0001] The invention relates to a brazing rare earth magnesium alloy filler metal, a preparation method and a brazing process, belonging 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. Researchers all over the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/28B23K35/40B23K1/008B23K1/20
CPCB23K1/008B23K1/20B23K35/284B23K35/40
Inventor 邹家生杨骏许祥平黄晓龙
Owner JIANGSU YANGMING SHIP EQUIP MFG TECH
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