WELDING PROCESSES
Each of the welding and cutting processes will be treated as follows :
æ Weldability
æ Welding metallurgy
æ Welding chemistry
æ Prewelding preparation
æ Limiting factors
æ Discontinuities
æ Inspection processes
Whaever process is specified by engineer, both you and welder must also be aware of limiting factors for specific job, so that you both can anticipate and overcome the factors that could cause discontinuities or more serious problems.
In addition to weldability, these other factors influence the selection of welding process :
æ Dimensions of material being welded, especially thickness, and its shape or form
æ The welding positionthat must be used
æ Root of joint requirements
æ Back side accessibility
æ Joint preparation
æ Availability of welding equipment, power sources, and fixtures
æ Availability of consumables
æ Availability of qualified welders and opearators
æ Quality level required
æ Economics
æ Safety
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