JPH0585264B

PURPOSE:To facilitate an arc shift and to form a preferable bead by superposing a charge stored in a capacitor on an arc current in reverse polarity to apply it to between an electrode and a base material when shifting an arc current from positive polarity to reverse polarity. CONSTITUTION:A voltage...

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Bibliographische Detailangaben
Hauptverfasser:	AOYAMA MASAHIRO, FUJOSHI TOSHIICHI, KANO KUNIO, MORIGUCHI HARUO
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CLADDING OR PLATING BY SOLDERING OR WELDING CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING ELECTRICITY GENERATION MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	PURPOSE:To facilitate an arc shift and to form a preferable bead by superposing a charge stored in a capacitor on an arc current in reverse polarity to apply it to between an electrode and a base material when shifting an arc current from positive polarity to reverse polarity. CONSTITUTION:A voltage input from a commercial power source 1 and rectified and smoothed by a rectifier 2 and a smoothing capacitor 3 is converted by a high frequency converter 4 to a high frequency. The high frequency voltage is stepped down by a transformer 5, produced from the secondary windings 5a, 5c, and applied through positive and negative polarity rectifiers 6, 7 to a base material 12 and an electrode 11. A capacitor 18 is connected with the secondary winding 5c of the transformer 5, and the charge stored in the capacitor 18 is superposed in reverse polarity between the electrode 11 and the material 12 on a welding voltage, and applied therebetween.