A welding method for obtaining amorphous joints for fesib amorphous strips

A technology of amorphous strip material and welding method, which is applied in the field of amorphous material and welding, can solve the problems of difficult welding of FeSiB amorphous strip material and limited application, and achieves wide range of process parameters, strong adaptability, and simple welding tooling Effect

Active Publication Date: 2017-04-05
NANCHANG HANGKONG UNIVERSITY
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Problems solved by technology

[0004] In order to solve the problem of difficult welding and limited application of FeSiB amorphous strips, the present invention proposes a method for obtaining amorphous joints for FeSiB amorphous strips. This method obtains completely amorphous joints through special welding tool design and process parameter optimization. Excellent crystallinity, formation and weld joint quality

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  • A welding method for obtaining amorphous joints for fesib amorphous strips
  • A welding method for obtaining amorphous joints for fesib amorphous strips
  • A welding method for obtaining amorphous joints for fesib amorphous strips

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Embodiment

[0031] Embodiment: welding process of the present invention is as follows:

[0032] Welding equipment: L80 Nd:YAG pulsed laser welding machine from Italy SISMA company, the spot diameter is Φ0.3mm, the surface is focused, the welding speed is 0.3m / min, the argon gas flow rate is 8L / min, and the pulse power P and pulse width are changed T, pulse frequency F.

[0033] 1. Preparation stage before welding

[0034] According to the characteristics of the welding fixture, the size of the iron-based amorphous alloy sample is 40mm×15mm×25μm. The surface of the welded sample was polished with sandpaper to remove the surface oxide layer and stains, and then cleaned with absolute ethanol and dried to prevent rust. Before laser welding, preheat the welding machine for 20 minutes, and deflect the laser beam by 5 o Obliquely incident on the surface of the sample, the plasma is suppressed by side-blowing argon shielding gas with a purity of 99.9%, and the welding pool is protected. The si...

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Abstract

The invention relates to the technical fields of amorphous materials and welding, in particular to a welding method for obtaining amorphous joints for FeSiB amorphous strips, which belongs to the connection technology of amorphous materials. Aiming at the limited size of the Fe-based amorphous alloy strip, brittle material, extremely thin material, and poor weldability, the method uses micropulse laser technology to successfully obtain a completely amorphous joint. The steps are as follows: grind the surface of the FeSiB amorphous alloy strip sample, clean it, and dry it; fix the base metal by clamping one end and flattening the other end on a special fixture designed by ourselves, and then blow Ar gas protection welding on the side. Melt pool: micro-pulse laser technology is used for lap welding, and process parameters such as pulse power P, pulse width T, and pulse frequency F are optimized to obtain completely amorphous welded joints. The invention has the following advantages: simple welding tooling, high welding efficiency, low cost, good joint quality, and the joint is completely amorphous.

Description

technical field [0001] The invention belongs to the connection technology of amorphous materials, relates to the field of amorphous materials and welding technology, and in particular relates to a method for obtaining amorphous joints for FeSiB amorphous strips. Background technique [0002] Amorphous alloy material is a new type of material developed in recent years. Compared with crystalline materials, amorphous materials have incomparable excellent properties, such as high strength, high elastic limit, high hardness, good corrosion resistance and softness. Magnetic properties. Among many amorphous alloy systems, iron-based amorphous alloys have high strength, excellent corrosion and wear resistance and soft magnetic properties, low cost, and have a wide range of industrial applications. FeSiB amorphous alloy has excellent soft magnetic properties, and has been used in electrical and electronic, electric power, automobile, aerospace and other industries, and has achieved ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/24B23K26/60B23K26/32
CPCB23K26/24
Inventor 王善林龚玉兵李娟陈玉华柯黎明
Owner NANCHANG HANGKONG UNIVERSITY
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