Sensing and modelling of gas metal arc welding
Welding automation is normally concerned with directly controlling such factors as current, arc voltage, travel speed, and filler wire speed. Several other levels of control can be identified beyond present technology including control of weld heat input, cooling rate, and bead geometry (bead width, penetration, reinforcements, and defects). This work describes the development of a steady-state model of the gas metal arc (GMA) welding process which allows independent control of the heat and mass input to the base metal. An electro-optical technique for measurement of the welding pool and groove geometry is also described along with an ultrasonic method for sensing the weld bead. 5 refs., 5 figs., 1 tab.
- Research Organization:
- EG and G Idaho, Inc., Idaho Falls (USA)
- DOE Contract Number:
- AC07-76ID01570
- OSTI ID:
- 6185666
- Report Number(s):
- EGG-M-17987; CONF-870679-6; ON: DE89011153
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360101* -- Metals & Alloys-- Preparation & Fabrication
360201 -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360601 -- Other Materials-- Preparation & Manufacture
42 ENGINEERING
420200 -- Engineering-- Facilities
Equipment
& Techniques
ACOUSTIC TESTING
ARC WELDING
AUTOMATION
CURRENTS
ELECTRIC CURRENTS
ELECTRO-OPTICAL EFFECTS
ENERGY TRANSFER
EQUATIONS
FABRICATION
GAS METAL-ARC WELDING
HEAT TRANSFER
JOINING
MASS TRANSFER
MATERIALS TESTING
MONITORING
NONDESTRUCTIVE TESTING
TESTING
ULTRASONIC TESTING
WELDING