One-gun multi-beam welding control device and method of electron beam welding machine

A technology of electron beam welding and control device, which is applied in the direction of electron beam welding equipment, welding equipment, manufacturing tools, etc., and can solve the problems of unfavorable welding of precision workpieces, etc.
CN103143829BActive Publication Date: 2014-12-31GUILIN THD TECH CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
GUILIN THD TECH CO LTD
Publication Date
2014-12-31

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Abstract

The invention discloses a one-gun multi-beam welding control device and method of an electron beam welding machine. The device mainly comprises a central control unit, a deflection scanning driving power supply, a deflection scanning winding, an optical fiber driving power supply, optical fibers, an electron beam flow control unit, a first electron beam flow sampling resistor and a second electron beam flow sampling resistor. The one-gun multi-beam welding control device and method of the electron beam welding machine have the advantages that electron beam flow closed-loop control can be realized at a high-voltage end and the adjusting speed is fast; by using the optical fibers for transmitting signals, high-voltage insulation isolation is realized; by using two loops of analog optical fibers and transmitting signals through a differential mode, common-mode interference caused by change of transceiver device performance is eliminated; an electron beam flow is simultaneously sampled at a high-voltage end and a low-voltage end, and the nonlinearity of an electron beam flow control system and the drift of the working point of the electron beam flow control system are corrected by the central control unit; and excessive scanning traces left by electron beams when the electron beams move among different points in the one-gun multi-beam welding process are eliminated.
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Description

technical field

[0001] The invention relates to electron beam welding equipment, in particular to an electron beam welding machine one gun multi-beam welding control device and a method thereof. Background technique

[0002] Electron beam welding is a process of local rapid heating to high temperature followed by rapid cooling. With the movement of the heat source, the temperature of the entire workpiece changes sharply with time and space, and the thermophysical properties of the material also change sharply with temperature, and there are also latent heat phenomena during melting and phase transition. In electron beam welding production, welding residual stress and deformation are inevitable. Welding residual stress and deformation may not only cause defects such as hot cracks, cold cracks, and brittle fractures, but also affect the bearing capacity of the structure under certain conditions, such as strength, stiffness, and compression stability. In addition, it will also...

Claims

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