High speed arc welding method

• US 3,288,982 A
• Filed: 03/08/1965
• Issued: 11/29/1966
• Est. Priority Date: 03/14/1964
• Status: Expired due to Term

• Current Assignee: Arinobu Yamada, Haruyoshi Suzuki, Ohaza Itozu, Takeshi Nishi, Teiji Ito
• Original Assignee: Arinobu Yamada, Haruyoshi Suzuki, Ohaza Itozu, Takeshi Nishi, Teiji Ito
• Inventors: HARUYOSHI SUZUKI, TEIJI ITO, TAKESHI NISHI, ARINOBU YAMADA, OHAZA ITOZU
• Application Number:
  US04/437,731
• Time in Patent Office: 631 Days
• US Class Current: 219/137.00R
• CPC Class Codes: B23K 28/02 Combined welding or cutting procedures or apparatus
• CPC Class Codes: B23K 33/004 Filling of continuous seams
• CPC Class Codes: B23K 9/1735 making use of several electrodes
• CPC Class Codes: B23K 9/235 Preliminary treatment

Claims

1. A NON-PRESSURE ARC WELDING METHOD FOR ARC WELDING THICK METAL PLATES AT HIGH SPEED AND WITH A WELDING ROD, CONSISTING ESSENTIALLY OF THE STEPS OF PROVIDING A SMALL ANGLE GROOVE BETWEEN THE PLATES TO BE WELDED, PASSING A HIGH FREQUENCY CURRENT THROUGH THE SURFACE PORTIONS OF THE PLATES DEFINING SAID GROOVES AND THROUGH WELD METAL DEPOSITED IN SAID GROOVE FROM THE ARC WELDING ROD AND ELECTRODE, TO HEAT THE SAID SURFACE PORTIONS TO A TEMPERATURE ABOVE 900*C., AND CONTINUING TO PASS SAID HIGH FREQUENCY CURRENT AND DEPOSIT WELD METAL FROM SAID WELDING ROD AND ELECTRODE AT A RATE SUFFICIENT TO COMPLETELY FILL SAID SAID PLATES IN A SINGLE PASS AT A SPEED OF MORE THAN TWO GROOVE DURING A SINGLE PASS BY ARC WELDING AND ARC WELDING METERS PER MINUTE.