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Welding Motion Experimentsof

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welding machine
Process parameter Value Welding Speed (mm/min) 160 80 Welding Current (A) 140 60 Table 1:Process Parameter by Trial Experimentsof A-TIG
Welding

Fig. 2:Appearance of a weld made on Stainless Steel 304L

E. Selection of Work-piece Parameter:
Stainless steels are engineering materials with good corrosion-resistance, strength and fabrication characteristics. They can readily meet a wide range of design criteria, including load, service life and low maintenance.
Selecting the proper stainless steel grades involves four qualities in the following order of importance:
a. Corrosion or heat resistance
b. Mechanical properties
c. Fabrication operation
d. Cost

Type 304L is an extra low-carbon variation …show more content…

A-TIG welding was increased penetration joint and decreased angular distortion. It was characteristic of high degree of energy concentration during welding and reduced the quality of supplied heat. It was prevented to overheat of the base metal and reduced the incidence of thermal strains and incompatible strain was caused by shrinkage in thickness.

VI. CONCLUSION
TIG welding with mixture of SiO2 and TiO2 fluxes achieves increase in weld depth and decreasein weld width as well as angular distortion.
The results indicate that TIG welds produced without flux the surface appearances clean andsmooth but with flux formed residual slag, spatters and small amount of fume is reported.Hardnessvalueoftheweldzonechangewiththedistancefromweldcentre dueto changeof microstructure.
The G-PCA method is supplemented by the ANOVA which is revealed that current, speed andflux are controllable factors significantly the multiple quality characteristics withdesirecontribution of 47.81%, 13.09% and 20.61% respectively.
The optimal combination of the process parameters was obtained from the proposedmethod was set with values of current, speed and flux 140 A, 100 mm/min and mixture of SiO2and TiO2 flux respectively. The corresponding responses are penetration depth, weldwidth and distortion of 3.64mm, 3.76mm, and 0.76

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