Abstract
Metal transfer behaviors of the flux-cored wire in CO_2 arc welding have a direct effect on usability of the flux-cored wire. These behaviors are indirectly showed in welding electric signals.Using the ANALYSATOR HANNOVER,welding electric parameters of the flux-cored wires in CO_2 arc welding are measured and analyzed.Four characteristic information values closely correlated with usability of the flux-cored wire are extracted,such as the sum of probability density of big short-circuiting current, frequency of short-circuiting transfer,frequency of brief short circuit and the sum of brief short -circuiting time,and then method of principal component analysis is applied to determining evaluation index of usability of the flux-cored wire.Usability of the flux-cored wire is quantitatively evaluated.Thereby it offers a new method for scientifically evaluating usability of the flux-cored wire.
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