Melting Characteristics of Flux Cored Wire(Welding Physics, Process & Instrument)

概要

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Metal transfer phenomena and melting rate of flux cored wire were studied by using high speed cine technique and measurement of high temperature resistivity of wire. Factors influencing the melting rate are discussed and experimentally analyzed. In flux cored wire, the flux has little influence on the high temperature resistivity of wire but it certainly increases the heat capacity. The influence of ohmic heating on melting rate is suppressed due to the presence of flux at longer extension or lower wire feed speed. The arc heating is also observed to have reduced contribution on wire melting due to its dissipation for melting the core flux. Since the heat conducted into core flux from the melted sheath and the one from the arc also used to melt the core flux are not taken into account, it may be improbable to apply the usual procedure used in the solid wire welding for the flux cored wire melting.
大阪大学の論文