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Real-time monitoring detecting device for electron beam deep penetration welding and penetration forming

A real-time monitoring and detection device technology, applied in the direction of electron beam welding equipment, welding equipment, metal processing equipment, etc., can solve the problems of direct monitoring, difficult control of weld quality control, etc., to achieve excellent weld quality, improve efficiency, and improve the welding process stable effect

Active Publication Date: 2017-05-24
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims at the difficulties of direct monitoring of the current electron beam welding process and the control of weld seam quality control, etc., and provides a device capable of real-time measurement and real-time display of the penetrating beam current in the electron beam dynamic welding process. By studying the total electron beam The law of the relationship between the current and the back penetrating beam and the definition of the penetration ratio, thus establishing the weld quality (including welding defects such as welding slippage, welding collapse, and excessive weld size and head ratio) and the electron beam penetration ratio criterion Real-time monitoring of electron beam deep penetration welding and the formation of a monitoring method

Method used

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  • Real-time monitoring detecting device for electron beam deep penetration welding and penetration forming
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  • Real-time monitoring detecting device for electron beam deep penetration welding and penetration forming

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Experimental program
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Effect test

Embodiment 1

[0058] The 2A12 aluminum alloy used in the experiment has a thickness of 10mm, which has good plasticity at high temperature and good welding performance, but it is easy to oxidize in the air. To remove oil, rust and oxides on the surface of the weldment, especially the two butt surfaces, first use a scraper to scrape off the oxides on the surface, and then use absolute ethanol to scrub and dehydrate.

[0059] Attach welding plate 3 as attached figure 2 Press fit and ensure the accuracy of assembly. The beam current sensing acquisition module 9 is fixed on the base 6 as shown in the accompanying drawings, and placed directly below the weld. It is ensured that the workpiece can slide along with the workbench 1 on the base 6 at a certain welding rate.

[0060] The selected process parameters are acceleration voltage 60kV, electron beam current 20mA, and welding speed 600mm / min. It is ensured that when the electron beam hits the welding plate 3, the worktable 1 starts to move...

Embodiment 2

[0068] The TC4 titanium alloy used in the experiment has a thickness of 10mm and is supplied in solution treated state. To remove oil, rust and oxides on the surface of the weldment, especially the two butt surfaces, first use a scraper to scrape off the oxides on the surface, and then use absolute ethanol to scrub and dehydrate.

[0069] Attach welding plate 3 as attached figure 2 Press fit and ensure the accuracy of assembly. Beam sensing acquisition module fast 9 is fixed on the base 6, and placed directly below the weld. It is ensured that the workpiece can slide along with the workbench 1 on the base 6 at a certain welding rate.

[0070] The selected process parameters are acceleration voltage 60kV, electron beam current 35mA, and welding speed 500mm / min. It is ensured that when the electron beam hits the welding plate 3, the worktable 1 starts to move, and the moving speed of the worktable 1 is the welding speed. At the same time, the beam sensing acquisition module...

Embodiment 3

[0078] The high-nitrogen austenitic stainless steel used in the experiment has a thickness of 5mm, which has high strength and high toughness and corrosion resistance. To remove oil, rust and oxides on the surface of the weldment, especially the two butt surfaces, first use a scraper to scrape off the oxides on the surface, and then use absolute ethanol to scrub and dehydrate.

[0079] Attach welding plate 3 as attached figure 2 Press fit and ensure the accuracy of assembly. Beam sensing acquisition module fast 9 is fixed on the base, and placed directly below the weld. It is ensured that the workpiece can slide along with the workbench 1 on the base 6 at a certain welding rate.

[0080] The selected process parameters are acceleration voltage 60kV, electron beam current 20mA, and welding speed 400mm / min. It is ensured that when the electron beam hits the welding plate 3, the worktable 1 starts to move, and the moving speed of the worktable 1 is the welding speed. At the ...

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Abstract

The invention discloses a real-time monitoring detecting device for electron beam deep penetration welding and penetration forming. The real-time monitoring detecting device comprises a beam current sensing and acquiring module, a bottom plate carrying sliding module and a calculating displaying module, wherein the beam current sensing and acquiring module is used for collecting beam current generated in the bottom plate carrying sliding module and converting a current signal into a voltage signal; the beam current sensing and acquiring module is used for transmitting the converted voltage signal to the calculating displaying module; the calculating displaying module is used for judging and displaying the signal; and welding speed is regulated through the bottom plate carrying sliding module. The real-time monitoring detecting device for electron beam deep penetration welding and penetration forming disclosed by the invention can be used for acquiring and displaying penetrating beam current in real time; and real-time monitoring for a dynamic welding process for an electron beam is realized by researching a relationship between total electron beam current and detected penetrating beam current, establishing a cross-flow ratio criterion and forming a monitoring method.

Description

technical field [0001] The present invention relates to the field of metal material processing, especially a set of beam collection and display device, which is a real-time monitoring device for electron beam welding by collecting and displaying the penetrating beam current during dynamic welding of electron beams in real time. The detection method used is based on the overall The relationship law between the electron beam current and the back penetrating beam current, through the study of the law to form a criterion to monitor the electron beam deep penetration welding in real time and form a monitoring method. Background technique [0002] Electron beam welding is to use the electrons generated by the cathode in the electron gun to be pulled out under the action of a high-voltage (25-300kV) accelerating electric field between the cathode and anode, and accelerated to a very high speed (0.3-0.7 times the speed of light). After the secondary magnetic lens is focused, a dense...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K15/00
Inventor 周琦陈鑫彭勇李洪强王克鸿孔见黄俊郭顺张天齐
Owner NANJING UNIV OF SCI & TECH