多極式熔接アークの轉移機構

概要

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The melti-arc has been so widely used in welding, but it is not evident how the arc can transfer from one electrode to another. Authors have deeply studied the after-arc phenomener, and applied our theory to the clarification of the transfer mechanism of the multi-arcs. We will report our results as we have acquired its clear solution. In our method, we measured separately the currents flow through the two electrodes. In addition, we used an interrupter in a circuit of a current in order to lead the transition of in our accords. We investigated the variations to time of the currents, voltage and arc-resistance at the vicinity of the transition. Our results and considerations lead to the following conclusions; a) The transition happens when the arc resistance becomes a certain constant value. b) The interval of the transition is about 1/100 sec. c) The reparate currents flow at the interval of the transition, but the essential arc seems to have already transfered. d) Strictly speaking, the arc voltage should go down slowly, and not abruptly. e) In general, the abrupt increase in the arc voltage by some reasons (for example, the dsecend of globuls except the transition induces the transition. f) The number of the abnomal increases in the voltage are larger than the numbers of the transitions. g) When we induce the transition by the interrupter, the arc voltage decreases without fail.
社団法人溶接学会の論文
1956-04-10