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I would say that SMAW (stick) is still the most widely used process. The GMAW (mig) process has gained a wide acceptance in construction and fabrication and may even have surpassed stick welding in many situations. Unfortunately with mig welding the machine has to be close to the welding site. Dragging a welding lead into and around fabrications is still much easier than moving a mig machine.
oxygen and acetylene
Thermite process is a procedure of welding using an exothermic reaction to produce a high temperature.
Acetylene welding is a process in which like metals are joined by heating them to their melting temperature with an oxy-acetylene flame produced by a torch.
The slag in the welding process protects the weld from oxidation and slows down the rate at which the weld cools. It also prevents brittleness of the metal.
Underwater welding is the process of using an energy source that produces lots of heat to melt together large pieces of metal while diving underwater. There are many great underwater welding schools that can provide this training. You can find these listed from the American Welding Society.
Underwater welding uses a special flux around the welding rod which produces gasses which form a bubble around the end of the rod ,excluding the water. It is difficult and never as strong, lacking penetration. It is only used when absolutly necessary.
how much does it cost to learn how to weld underwater
steel
http://www.studydiscussion.com/best-underwater-welding-schools/ Should answer all the question you may have. If not, then sorry I misunderstood the question.
sub-mersible welding machine using reverse polaity. miller welding company as well as Lincoln specialize and sell welding equipment. for more info contact the Ocean Corp in Houston tx.
s
Where it was developed I am not sure, however I know that it uses a special kind of arc welding.
If you are looking for a class where you can learn underwater welding then you can do this through a company called Interdive Services. This is a three week course resulting in a professional qualification.
BYU Brigham Young University
ethan barnes
Underwater welding jobs have extremely tough technical requirements. For that reason, this job pays more than a job as a power lineman.