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Pipe Welding the Right Way

Wednesday, March 19, 2014
Pipes, like the ones used in homes as well as in major constructions, do not necessarily come as one long unit. In most cases, workers would have to weld it in order to connect one unit to the other as well as to set it in place. Not many people may know it, however, but there are actually a number of things a welding and fabrication specialist has to keep in mind when it comes to welding pipes.

One of the most common mistakes done by those involved in customised fabrication is incorrectly cutting the metal sheet. Depending on the material used, cutting the sheets way before the heat is applied could cause distortion as soon as the fillers are set in place. With the application of a high temperature, the corners could become distorted which could result in an ill fit between materials. What welding and fabrication people can do is make use of such tool as the orbital pipe cutting equipment.

It is also a common mistake for amateurs on customised fabrication to make use of too much shielding gas. While most welders think that making use of more shielding gas gets the job done efficiently and faster, it actually does the opposite. With too much shielding gas, what actually happens is that the weld puddle becomes unnecessarily agitated which, in turn, could lead to, in most cases, lack of fusion between the metals.

While it is okay for experienced welders to mix the gas themselves, this is not something that is recommended for someone who has not had much experience doing so. Relying on a gas regulator would only do wonders if one has a thorough knowledge of how the gases should be mixed. For those who do not have that years of experience, the best thing to do would be to buy gases that have been premixed. That way, he or she would not longer have to do any guess work.

Depending on the MOG process involved, welders would have to make use of a specific size of nozzle. Making use of the wrong nozzle size could lead to wrong gas coverage. Of course, in order to determine the correct nozzle size, one does not only take into consideration the procedure that would be done but a number of other variables as well, including the amount of gas flow needed.

With more and more businesses putting more onus on having everything automated, it can be quite easy for service shops providing welding services to jump the gun and make use automated machineries without really understanding the machine's strengths and limitations as well as what the specific situation is all about. Without a proper look at what should be done, the service shop runs the risk of causing bottlenecks either in the upstream or the downstream processes, or both. In the same line, there are also some service shops that make the mistake of assuming that there is a one-size-fits-all welding machine that they can use regardless of the nature of the job that needs to get done.


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