Cemented carbide/INVAR/steel laser beam welding assembly and manufacturing method thereof

A cemented carbide and laser welding technology, applied in laser welding equipment, welding equipment, metal processing equipment, etc., can solve the problems of easy cracking and incomplete penetration of welded joints, and achieve the effect of improving the level of automation

Active Publication Date: 2015-11-04
SHANGHAI UNIV OF ENG SCI
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Problems solved by technology

However, the existing intermediate layer materials often have problems such as incomplete penetration of welded joints and easy cracks.

Method used

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  • Cemented carbide/INVAR/steel laser beam welding assembly and manufacturing method thereof
  • Cemented carbide/INVAR/steel laser beam welding assembly and manufacturing method thereof
  • Cemented carbide/INVAR/steel laser beam welding assembly and manufacturing method thereof

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Embodiment Construction

[0026] The present invention will be further described in detail and completely below in conjunction with the embodiments and accompanying drawings.

[0027] After surface treatment, the material to be welded is fixed on the operating platform of the external axis positioner according to the assembly requirements; the process parameters are input into the robot programming controller to perform automatic welding; after the welding is completed, the microscopic forming analysis of the sample is carried out.

[0028] The laser welding schematic diagram of the present invention is as figure 1 As shown, the materials to be welded are YG20 cemented carbide 111 and 45# steel 112, size: φ58×3mm semicircle, the surface is desmeared, cleaned with acetone or alcohol for later use; filling material: Invar alloy containing 42% Ni 113, a long strip with a size of 58×0.5×3mm; protective gas: pure argon. IPG-YLS-5000W ytterbium-doped multimode fiber laser is used as the heat source, and the...

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Abstract

The invention discloses a cemented carbide / INVAR / steel laser beam welding assembly and a manufacturing method thereof. The method includes the steps that INVAR alloy is used as an interlayer filling material, and a laser and a robot are combined for laser beam welding, so that the cemented carbide / INVAR / steel laser beam welding assembly is manufactured. By means of the automatic welding technology of the robot, automatic production of cemented carbide and steel is achieved; moreover, the INVAR alloy is used as the filling material, so that the rate of the defects such as incomplete penetration, cracks and air pores caused by excessively large differences in the physical properties such as thermal expansion coefficients, heat conductivities and melting points of the cemented carbide and the steel is reduced. According to the cemented carbide / INVAR / steel laser beam welding assembly and the manufacturing method thereof, the problems that cemented carbide is low in production efficiency, single in shape, poor in toughness and the like in the prior art can be solved effectively, the use cost of the cemented carbide can be reduced, metallurgical bonding of cemented carbide and steel welding and the toughness of a welding joint are improved, and the automation level of cemented carbide and steel welding is improved.

Description

technical field [0001] The invention belongs to the technical field of cemented carbide connection, and in particular relates to a cemented carbide / INVAR / steel laser welding weldment and a preparation method thereof. Background technique [0002] Since the 1920s the German Karl Since the invention of cemented carbide, its production technology, output and application range have been greatly developed. According to the "2013-2017 China Cemented Carbide Industry Market Prospect and Investment Strategic Planning Analysis Report", the output of China's cemented carbide in 2012 was 23,500 tons, the export was nearly 5,000 tons, and the output of deep-processed products reached 6,600 tons, accounting for the total amount of alloys. 1 / 3 of the output. Cemented carbide has been widely used in cutting tools, mining tools, molds and high-pressure and high-temperature-resistant cavities, among which cutting tools and mining tools account for 33% and 25% of cemented carbide applicati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/26B23K26/14B23K26/60
CPCB23K26/14B23K26/26B23K2103/04
Inventor 于香苑徐培全李伟周东冉姚德军李颖
Owner SHANGHAI UNIV OF ENG SCI
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