Gas Tungsten Arc Welding of Inconel 825 Sheet: Study on Weld Bead Geometry and GA Optimization

2020 ◽  
pp. 413-420
Author(s):  
Bishub Choudhury ◽  
M. Chandrasekaran
Keyword(s):  
Arc Welding ◽  
Gas Tungsten Arc Welding ◽  
Weld Bead ◽  
Bead Geometry ◽  
Weld Bead Geometry ◽  
Gas Tungsten Arc ◽  
Gas Tungsten ◽  
Inconel 825

scholarly journals Processing of copper by keyhole gas tungsten arc welding for uniformity of weld bead geometry

2020 ◽  
Vol 35 (15) ◽  
pp. 1707-1716
Author(s):  
Raghavendra Darji ◽  
Vishvesh Badheka ◽  
Kush Mehta ◽  
Jaydeep Joshi ◽  
Ashish Yadav
Keyword(s):  
Arc Welding ◽  
Gas Tungsten Arc Welding ◽  
Weld Bead ◽  
Bead Geometry ◽  
Weld Bead Geometry ◽  
Gas Tungsten Arc ◽  
Gas Tungsten

Fuzzy rule based approach for predicting weld bead geometry in gas tungsten arc welding

2008 ◽  
Vol 13 (2) ◽  
pp. 167-175 ◽  
Author(s):  
P. Ghanty ◽  
S. Paul ◽  
A. Roy ◽  
D. P. Mukherjee ◽  
N. R. Pal ◽  
...  
Keyword(s):  
Arc Welding ◽  
Fuzzy Rule ◽  
Gas Tungsten Arc Welding ◽  
Weld Bead ◽  
Bead Geometry ◽  
Weld Bead Geometry ◽  
Rule Based ◽  
Gas Tungsten Arc ◽  
Gas Tungsten ◽  
Rule Based Approach

scholarly journals Arc Characteristics and Weld Bead Microstructure of Ti-6Al-4V Titanium Alloy in Ultra-high Frequency Pulse Gas Tungsten Arc Welding (UHFP-GTAW) Process

2020 ◽  
Vol 26 (4) ◽  
pp. 426-431
Author(s):  
Wei LI ◽  
Gaochong LV ◽  
Qiang WANG ◽  
Songtao HUANG
Keyword(s):  
Titanium Alloy ◽  
Fusion Zone ◽  
Arc Welding ◽  
Gas Tungsten Arc Welding ◽  
Weld Bead ◽  
Gas Tungsten Arc ◽  
Arc Characteristics ◽  
Arc Pressure ◽  
Gtaw Process ◽  
Gas Tungsten

To resolve the problem of grain coarsening occurring in the fusion zone and the heat-affected zone during conventional gas tungsten arc welding(C-GTAW) welded titanium alloy, which severely restricts the improvement of weld mechanical properties, welding experiments on Ti-6Al-4V titanium alloy by adopting ultra-high frequency pulse gas tungsten arc welding (UHFP-GTAW) technique were carried out to study arc characteristics and weld bead microstructure. Combined with image processing technique, arc shapes during welding process were observed by high-speed camera. Meanwhile the average arc pressure under various welding parameters were obtained by adopting pressure measuring equipment with high-precision. In addition, the metallographic samples of the weld cross section were prepared for observing weld bead geometry and microstructure of the fusion zone. The experimental results show that, compared with C-GTAW, UHFP-GTAW process provides larger arc energy density and higher proportion of arc core region to the whole arc area. Moreover, UHFP-GTAW process has the obviously effect on grain refinement, which can decrease the grain size of the fusion zone. The results also revealed that a significant increase of arc pressure while increasing pulse frequency of UHFP-GTAW, which could improve the depth-to-width ratio of weld beads.

Rule-Based Control of Weld Bead Width in Pulsed Gas Tungsten Arc Welding (GTAW)

1996 ◽  
Vol 210 (1) ◽  
pp. 93-98 ◽  
Author(s):  
C S Wu ◽  
Y C Liu
Keyword(s):  
Process Control ◽  
Arc Welding ◽  
High Speed ◽  
Gas Tungsten Arc Welding ◽  
Weld Bead ◽  
Bead Width ◽  
Rule Based ◽  
Television Camera ◽  
Gas Tungsten Arc ◽  
Gas Tungsten

A rule-based control system of weld bead width is established for realizing in-process control of pulsed gas tungsten arc welding. The system consists of a microprocessor-controlled power supply and working table, a solid state television camera, a high-speed analogue-to-digital converter and an image processing and control computer. Considering the characteristic of arc light and its influence on vision sensing, special measures were taken for image capturing, processing and weld bead width extraction. The rule-based model was combined with the principle of PID (proportional integral derivative) control, and a parameter-changing PID controller was designed. The bead-on-plate welding experiments were carried out. The results show that the system is of good adaptablity for in-process control of weld bead width in pulsed gas tungsten arc welding (GTAW).

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