MIG焊熔滴过渡的电弧光谱信号

获得熔滴过渡的信号是MIG焊熔滴过渡控制的关键，这已成为目前亟需解决的问题。文中介绍了以电弧光谱手段检测熔滴过渡的试验装置、原理和方法。通过试验测试及数据分析发现，通过熔化极电弧的光谱信号可以检测出MIG焊喷射过渡的过渡过程、过渡形式，测量过渡参数。信号幅度大，品质好；不同的过渡形式具有不同的典型信号模式；信号脉冲的形态与熔滴过渡的发展过程具有明确的对应关系。熔化极电弧光谱信号的诸特征可方便地应用于MIG焊熔滴过渡的过程控制、过渡形式的模式识别与稳定化以及过渡参数的测量。

Arc spectrum signals of droplet spray transfer in MIG welding

To obtain effective signals of droplet, which has become a pressing problem, is essential for droplet transfer control in MIG welding. This paper has introduced the method to detect droplet transfer by means of arc including the experiment sets, testing principle and data processing procedure. It has been discovered that arc spectrum signal can detect and measure the transfer procedure, the transfer modes and the transfer parameters. The arc spectrum signal enjoys excellent quality with high signal amplitude, each transfer mode has its specific signal mode, and the pulse outline corresponds to the development of a droplet transfer procedure. All these features of arc spectrum signal can be easily applied in transfer procedure control, transfer mode identification and stabilization and transfer parameters measurement.