Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Via Mechanics Ltd
Original Assignee
Hitachi Ltd
Hitachi Seiko Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd, Hitachi Seiko LtdfiledCriticalHitachi Ltd
Priority to JP1428581ApriorityCriticalpatent/JPS57130770A/ja
Publication of JPS57130770ApublicationCriticalpatent/JPS57130770A/ja
Publication of JPH0249829B2publicationCriticalpatent/JPH0249829B2/ja
B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
B23K9/00—Arc welding or cutting
B23K9/09—Arrangements or circuits for arc welding with pulsed current or voltage
B23K9/091—Arrangements or circuits for arc welding with pulsed current or voltage characterised by the circuits
B23K9/093—Arrangements or circuits for arc welding with pulsed current or voltage characterised by the circuits the frequency of the pulses produced being modulatable