The main difference between these two types of welding is that GTAW uses gases to create the weld whilst SMAW uses an an electrical current. Both are very popular welding processes.
Bohler EASN 2 Si-IG for GTAW Bohler FOX EAS 2Si for SMAW
For GTAW Process use ER90-B9 and for the SMAW Process use E 9018-B9, or E 9015-B9
Almost all welding today is done with electricity (Arc Welding) even on cast iron. SMAW, GTAW, GMAW etc. --AW means Arc Welding.
no need
In European Shipbuilding Industries used SMAW,GTAW,GMAW,SAW,FCAW(MAG). In INDIAN Shipbuilding Industries used, LBW,EBW,EGW,ESW,FCAW,SAW.
A certified welder is one who has successfully passed the requirements of an industry specification for welding in a particular process (SMAW, GMAW, FCAW, GTAW), and in a specific position (1G, 2G, 3F, 6G, etc.), with a specific material (mild steel, aluminum, stainless, etc.) The certification relates only to the specification that was qualified to, in the position qualified, on the material qualified, and only with the process used. A master welder is one who can, or has, passed the most restrictive position (Usually 6G), in all processes, and in many different material groups. There is no mention of "master welder" in welding specifications, it is usually an internal company designation. It is expected that a Master Welder can weld any material, in any position, with any process.
Understanding the composition of the alloy helps the welder select the appropriate welding process, filler material, and welding parameters to ensure a strong and reliable weld. Different alloys have unique properties that can affect the weld's integrity, such as melting point, heat sensitivity, and susceptibility to cracking or distortion during welding.
smaw and tig(gtaw) are using CC source. because these both types using manual wire feeding. so welder can not able to maintain constant arc length. change in arc length will change voltage. so it needs power supply which should not affected by this arc length = voltage changes. that's why CC type is used for these process. in CC type source change in voltage will not change current much.
smaw welding is sheilded metal arc welding
Yes. There are covered electrodes made for SMAW (stick) welding of SS. I have actually repaired one of my wifes SS cooking pots that had a broken handle with a stick welder.
There is two technique of arc initiation, first TAPPING Technique and second SCRATCH Technique. TAPING Technique is generally use in GTAW and SCRATCH Technique is used for SMAW process.