System for detecting micro-beam plasma arc three-dimensional dynamic spectrum

Abstract

The invention discloses a system for detecting a micro-beam plasma arc three-dimensional dynamic spectrum and relates to the technical field of spectrum detection. The system comprises a three-dimensional precision inching platform (11), a light path system, a light path system fixing device (10), a spectrum collecting control system and a data line (9). The three-dimensional precision inching platform (11) comprises a stepping motor which can realize the stepping motion on X,Y and Z three-dimensional directions, a screw rod mechanism and a base. The light path system comprises a detecting lens (7), an optical fiber (1) and a spectrometer (8), wherein two ends of the optical fiber (1) are respectively connected with the detecting lens (7) and the spectrometer (8). The spectrum collecting control system comprises a spectrum collecting software (12), a stepping motor controller (14) and a computer (13). The stepping motor controller (14) and the spectrometer (8) are connected with the computer (13) by the data line (9). The system of the invention can identify and collect the spectrum information on the periphery and the interior point of the arc and the precision is 10 microns.

Description

technical field [0001] The invention relates to the technical field of spectrum detection, in particular to a micro-beam plasma arc three-dimensional dynamic spectrum detection system. Background technique [0002] The micro-beam plasma arc is mainly formed after ionization of gases such as helium or argon, which are compressed mechanically, thermally and electromagnetically. Micro-beam plasma arc welding is a small current plasma arc welding. Its arc heating workpiece has the characteristics of high arc temperature, concentrated energy density, good arc column straightness, and good arc stability. [0003] The welding arc contains rich spectral information, which is a rich source for understanding the physical process of welding, a leading element for controlling the physical process of welding and realizing welding automation, and a new signal source after the arc signal. The welding arc test is very different from the general environment test. First of all, the arc tempe...

AI Technical Summary

Problems solved by technology

The welding arc test is very different from the general environment test. First of all, the arc temperature is high and it is difficult to measure directly. Generally, only indirect measurement can be carried out.

Secondly, factors such as power fluctuations and airflow changes disturb the arc, making various measurements in the arc time-varying. This time-varying speed is often very large and has randomness.

Third, the arc space is small but the temperature gradient is large, and the distribution of various particle components is very uneven in space

It can be seen that this device can only detect the total spectral signal superimposed from each point inside the arc to the periphery of the arc, but cannot identify and collect the spectral signal of the internal point of the arc

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