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Brazing alloy for connecting heterogenous metals with large spot laser-electric arc composite heat source

A technology of dissimilar metals and composite heat sources, used in laser welding equipment, metal processing equipment, welding equipment, etc., can solve problems such as inability to connect ordinary non-coated low carbon steel, and achieve the effect of solving efficiency and quality problems

Inactive Publication Date: 2009-07-08
HARBIN WELDING INST LTD
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  • Abstract
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Problems solved by technology

[0006] In order to solve the technical problem that the above-mentioned composite heat source in the background technology cannot be connected to ordinary non-coated low-carbon steel or ordinary non-coated low-alloy steel-non-ferrous metals, the present invention proposes a braze for connecting a large-spot laser-arc composite heat source to dissimilar metal workpieces With the help of this flux, the high-quality and efficient connection of ordinary non-coated low-carbon steel or ordinary non-coated low-alloy steel and non-ferrous metals can be realized by using a composite heat source welding method

Method used

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Experimental program
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Effect test

Embodiment Construction

[0031] The laser used in the test is the HL2006D Nd:YAG solid-state laser produced by the German HAAS company, with a maximum output power of 2.6kW and a continuous wave laser with an output wavelength of 1.06μm. It uses a focusing lens with a focal length of 200mm. It is positive defocus above the upper surface of the workpiece) to obtain a large spot; the arc welding machine is the TPS5000 digital GMA welding power supply and wire feeder produced by the Austrian Fonius company; the AlSi5 welding wire with a diameter of 1.2 produced by the American Golf company is selected; The base metals are 1.0mm thick 1050 pure aluminum plate and 4043 aluminum alloy plate and 1.5mm thick 5A02 aluminum-magnesium alloy plate. , The size of the test plate is 30×200mm.

[0032] Before the test, the surface of the steel plate was cleaned with acetone to remove oil stains, then the surface was polished with a grinding wheel and sandpaper in turn, and finally cleaned with acetone; the aluminum / s...

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Abstract

The present invention is one kind of brazing alloy for connecting heterogenous metals with large spot laser-electric arc composite heat source. The brazing alloy consists of KAlF4 or CsAlF4 30-81 wt%, Zn 5-30 wt%, Sn 5-30 wt%, Sb 1-5 wt%, La 1-5 wt%, and K2SiF6 1-5 wt%. The brazing alloy is used in high efficiency and high quality welding between low carbon steel and non-ferrous metal with the composite heat source of large spot laser and electric arc.

Description

Technical field: [0001] The present invention proposes a brazing flux for connecting dissimilar metals with a large-spot laser-arc composite heat source, which belongs to the technical field of dissimilar metal connections, and in particular relates to a large-spot laser-arc composite heat source for connecting ordinary non-coated low-carbon steel or ordinary non-coating Flux for coated low alloy steel and aluminum. Background technique: [0002] As we all know, the high-quality and efficient connection of carbon steel, alloy steel and aluminum and aluminum alloy has always been a technical problem in the field of welding technology. Although some solid-state welding methods such as brazing, friction welding, magnetic pulse welding, explosive welding, diffusion welding, and ultrasonic welding can achieve the joining of dissimilar metals and can produce high-quality welded joints, there are various kinds of solid-state welding methods. It is difficult to meet the requirement...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/22B23K35/363B23K28/02B23K103/18B23K103/20B23K26/348
Inventor 林尚扬雷振游爱清王旭友秦国梁王威于宁卜大川穆瑞骥于洪军
Owner HARBIN WELDING INST LTD
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