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1. US20220063012 - TIG WELDING TORCH EQUIPPED WITH NARROW NOZZLE FOR SPOT WELDING, AND ELECTRODE NOZZLE USED IN SAME

Office
United States of America
Application Number 17413284
Application Date 23.12.2019
Publication Number 20220063012
Publication Date 03.03.2022
Publication Kind A1
IPC
B23K 9/29
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
9Arc welding or cutting
24Features related to electrodes
28Supporting devices for electrodes
29Supporting devices adapted for making use of shielding means
B23K 9/16
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
9Arc welding or cutting
16making use of shielding gas
B23K 9/167
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
9Arc welding or cutting
16making use of shielding gas
167and of a non-consumable electrode
CPC
B23K 9/325
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
9Arc welding or cutting
32Accessories
325Devices for supplying or evacuating shielding gas
B23K 9/296
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
9Arc welding or cutting
24Features related to electrodes
28Supporting devices for electrodes
29Supporting devices adapted for making use of shielding means
291the shielding means being a gas
296using non-consumable electrodes
B23K 9/167
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
9Arc welding or cutting
16making use of shielding gas
167and of a non-consumable electrode
B23K 9/164
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
9Arc welding or cutting
16making use of shielding gas
164making use of a moving fluid
Applicants MURATA WELDING LABORATORIES, INCORPORATED
Inventors Akihisa MURATA
Tadasuke MURATA
Manabu TANAKA
Priority Data 2018-241404 25.12.2018 JP
Title
(EN) TIG WELDING TORCH EQUIPPED WITH NARROW NOZZLE FOR SPOT WELDING, AND ELECTRODE NOZZLE USED IN SAME
Abstract
(EN)

The present invention enables even a beginner to acquire the technique easily and perform suitable spot welding, and achieves improved workability, improved welding quality, improved productivity, and the like. The present invention includes a torch body 2 for passing a shielding gas, a tungsten electrode rod 5 inserted into the torch body 2 and connected to a cathode, a constricted nozzle 6 for supporting a distal end portion of the tungsten electrode rod 5 concentrically, defining a gas passage 6e between the tungsten electrode rod 5 and the constricted nozzle 6 for flowing a shielding gas G, and discharging the shielding gas G from the constricted nozzle 6 at a higher speed than the shielding gas G discharged from the distal end of the torch body 2, and a cylindrical electrode nozzle 7 having conductivity arranged concentrically with the tungsten electrode rod 5 on the outer circumference of the constricted nozzle 6, connected to the anode via a ground cable 18, and configured to have a tapered shape at a distal end portion, wherein the tapered distal end portion is located further outside than the distal end portion of the tungsten electrode rod 5, gas vent ports 7c and 7d of the shielding gas G are provided on the electrode nozzle 7.