Aluminum alloy sheet laser welding auxiliary weld-joint forming material and preparation method thereof

A welding seam forming and laser welding technology, applied in welding/cutting media/materials, welding equipment, metal processing equipment, etc., can solve problems affecting product performance, reducing joint strength, affecting appearance, etc., to reduce porosity , Avoid weld bumps, avoid the effects of air holes

Active Publication Date: 2014-01-15
武汉光谷机电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Welding bumps and pits not only affect the appearance, but also have stress concentration, which reduces the strength of the joint and affects the performance of the product

Method used

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  • Aluminum alloy sheet laser welding auxiliary weld-joint forming material and preparation method thereof
  • Aluminum alloy sheet laser welding auxiliary weld-joint forming material and preparation method thereof
  • Aluminum alloy sheet laser welding auxiliary weld-joint forming material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Weigh 30wt% sodium fluorosilicate, 26wt% fused magnesia, 22wt% white corundum powder, 9wt% fluorite, 6wt% rutile and 7wt% silicon micropowder and mix them well. It is a mixture of potassium water glass and sodium water glass with a volume ratio of 1:3, and the Baume degree of the mixture is 37. The amount of binder added is subject to the ease of molding in the mould. Put it into a mold after stirring evenly, and press it into a billet at a pressure of 85-90MPa. Place the blank in a kiln, heat at a heating rate not exceeding 150°C per hour, bake at 350-360°C for 3 hours, then heat at a heating rate not exceeding 100°C per hour, and bake at 710-720°C for 3 hours, Cool to below 100°C and release from the furnace to obtain an aluminum alloy thin plate laser welding auxiliary weld seam forming material.

[0028] The external dimensions of the aluminum alloy thin plate laser welding auxiliary weld seam forming material prepared in this embodiment are 35×25×10 mm. use as ...

Embodiment 2

[0030] Weigh 34wt% sodium fluorosilicate, 24wt% fused magnesia, 20wt% white corundum powder, 8wt% fluorite, 8wt% rutile and 6wt% silicon micropowder and mix them well. It is a mixture of potassium water glass and sodium water glass with a volume ratio of 1:3, and the Baume degree of the mixture is 38. The amount of binder added is subject to the ease of molding in the mould. Put it into a mold after stirring evenly, and press it into a billet at a pressure of 85-90MPa. Put the billet in the kiln, heat at a heating rate not exceeding 150°C per hour, bake at 320-350°C for 4 hours, then heat at a heating rate not exceeding 100°C per hour, and bake at 680-700°C for 2 hours, Cool to below 100°C and release from the furnace to obtain an aluminum alloy thin plate laser welding auxiliary weld seam forming material.

[0031] The outer dimensions of the aluminum alloy thin plate laser welding auxiliary weld seam forming material prepared in this embodiment are 38×28×12 mm. Using the ...

Embodiment 3

[0033] Weigh 32wt% sodium fluorosilicate, 25wt% fused magnesia, 21wt% white corundum powder, 7wt% fluorite, 7wt% rutile and 8wt% silicon micropowder and mix them well. It is a mixture of potassium water glass and sodium water glass with a volume ratio of 1:3, and the Baume degree of the mixture is 38. The amount of binder added is subject to the ease of molding in the mould. Put it into a mold after stirring evenly, and press it into a billet at a pressure of 85-90MPa. Place the blank in a kiln, heat at a heating rate not exceeding 150°C per hour, bake at 330-350°C for 4 hours, then heat at a heating rate not exceeding 100°C per hour, and bake at 700-720°C for 3 hours, Cool to below 100°C and release from the furnace to obtain an aluminum alloy thin plate laser welding auxiliary weld seam forming material.

[0034] The outer dimensions of the aluminum alloy thin plate laser welding auxiliary weld seam forming material prepared in this embodiment are 38×28×12 mm. Using the s...

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Abstract

The invention provides an aluminum alloy sheet laser welding auxiliary weld-joint forming material and a preparation method of the material. The aluminum alloy sheet laser welding auxiliary weld-joint forming material is formed by mixing a powder material and a binding agent, and then pressing and baking the mixture. The powder material comprises, by weight, 30-34% of sodium fluosilicate, 24-26% of fused magnesite, 20-22% of white emery powder, 7-9% of fluorite, 6-8% of rutile and 6-8% of silica powder. The aluminum alloy sheet laser welding auxiliary weld-joint forming material is easy to obtain, and the obtained aluminum alloy sheet laser welding auxiliary weld-joint forming material is small in porosity and can effectively overcome the defects generated in the welding process of aluminum alloy sheets.

Description

technical field [0001] The invention belongs to the field of welding technology, and in particular relates to an aluminum alloy thin plate laser welding auxiliary weld seam forming material and a preparation method thereof. Background technique [0002] Manufacturing industrial chassis and electromechanical cabinets with aluminum alloy sheets not only has beautiful appearance, but also has good corrosion resistance and long service life in harsh environments. At present, the amount of laser welding and welding in the manufacturing industry of industrial chassis and electromechanical cabinets is relatively large. Laser welding has the advantages of good welding quality, high efficiency and low cost. When the general laser welding method is used, the energy of laser welding is concentrated, and a large amount of metal vapor will be generated during the welding process. At the same time, the dissolved hydrogen content in the liquid aluminum alloy is high, which often causes po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/24B23K35/36B23K35/40
CPCB23K35/3607
Inventor 廖小文余圣甫广爱清
Owner 武汉光谷机电科技有限公司
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