Anode and cathode geometry and shielding gas interdependence in GTAW
Parametric analyses and high-speed photography of the interdependence of electrode (cathode) tip geometry, shielding gas composition, and groove (anode) geometry indicate that spot-on-plate tests show that blunt cathode shapes have penetration effects similar to addition of a high ionization potential inert gas (such as helium) to the argon shielding gas. Electrode shape and shielding gas composition effects are not synergistic. The time required to develop a given penetration is a function of anode and cathode geometry and shielding gas composition, in addition to other essential welding variables. Spot-on-plate tests are a valid analysis of radical pulsed GTAW. Bead-on-plate tests are a valid analysis of mild pulsed or constant current GTAW.
- Research Organization:
- Idaho National Engineering Lab., Idaho Falls (USA)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- EY-76-C-07-1570
- OSTI ID:
- 5837752
- Report Number(s):
- CONF-7904106-1; TRN: 79-020826
- Resource Relation:
- Conference: 61. AWS annual meeting, Los Angeles, CA, USA, 14 Apr 1979
- Country of Publication:
- United States
- Language:
- English
Similar Records
EFFECT OF MINOR ADDITIONS OF HYDROGEN TO ARGON SHIELDING GAS WHEN WELDING AUSTENITIC STAINLESS STEEL WITH THE GTAW PROCESS
Investigation of factors controlling GTA weld bead geometry
Related Subjects
GAS TUNGSTEN-ARC WELDING
STAINLESS STEEL-304
ANODES
CATHODES
ELECTRODES
GEOMETRY
TUNGSTEN
WELDED JOINTS
ALLOYS
ARC WELDING
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
ELEMENTS
FABRICATION
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
JOINING
JOINTS
MATERIALS
MATHEMATICS
METALS
NICKEL ALLOYS
REFRACTORY METALS
STAINLESS STEELS
STEELS
TRANSITION ELEMENTS
WELDING
360101* - Metals & Alloys- Preparation & Fabrication