Method for measuring beam space form of high-energy beam welder

Abstract

The invention provides a method for measuring a beam space form of a high-energy beam welder, and the method includes the following steps of a focus correction step: correcting a focus of the high-energy beam welder; a test welding adjustment step: performing test welding by using the high-energy beam welder to obtain a cross weld, and adjusting the position of the crosshairs on the monitor screenaccording to the cross weld; a welding simulation step: welding the wafers by using the high-energy beam welder, and recording form and position data of each wafer when burns occur; and a data processing step: obtaining a beam space form diagram of the high-energy beam welder according to the form and position data. The method provided by the invention comprehensively applies technologies such asmoving and lifting pulse-type correction focus, cross-continuous correction fork line and approaching tangential observation beam diameter, and measures beam forms of various types of high-energy beam welders through extremely low-cost experimental methods without the use of expensive special instruments, thereby providing a quantitative basis for the structural design of the model product.

Description

technical field [0001] The invention relates to the field of high-energy beam welding, in particular to a method for measuring the beam space shape of a high-energy beam welding machine. Background technique [0002] With the rapid development of high-thrust technology, there are more and more high-energy beam welding (laser welding, electron beam welding) joints in the current space propulsion system. The weld geometry of these joints is generally relatively simple, but there are often some higher bosses near the weld, such as figure 1 As shown, since the laser beam and the electron beam are in an inverted conical converging state in space, for some welding structures where the boss is too close to the weld seam, there is a high probability that the edge of the boss will be burned. In the absence of relevant data reserves in the process, the existing technology cannot quantitatively describe the energy distribution of laser beams and electron beams above the weld, resultin...

AI Technical Summary

Problems solved by technology

In the absence of relevant data reserves in the process, the existing technology cannot quantitatively describe the energy distribution of laser beams and electron beams above the weld, resulting in the inability to make technical requirements for product designers in advance, so a special project is urgently needed Process technology measurement method, in order to draw the beam shape of several high-energy beam welding machines in the institute, so as to provide accurate theoretical support for the optimization of product structure

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