Advantages And Disadvantages Of Mag Welding

It was hard to weld back in those times, but throughout time and progression welding became more of a phenom for the building of metal surfaces and structures. The American Welding Society (AWS) was founded in 1919, it was formed to advance the technology and science of welding. It put more detail and analysis on how to form the welds, how to control the weld puddle, The distance of the arc length from the electrode and the work piece. Welding is a special trade, it takes a person to have good near and far sight, steady arm and hand motion, and concentration. Welding has become great for a lot of amazing things like building automobiles, building structures, bridges. Their have been a lot of things that welding can be attributed to and is amazing for

Welding is a process used to join metal parts by producing a coalescence, called a weld, at a joint. Advances in welding technology have opened the way for innovative designs in structures and machinery. Of modern welding processes, the greatest number fall under the general classifications of arc welding, gas welding and cutting, resistance welding, and brazing.

Tungsten inert gas (TIG) welding is the process of blending together reactive metals such as magnesium and aluminum. The TIG welding method became popular and useful in the early 1940s and, as a result, has greatly propelled the use of aluminum for welding and structural processes. TIG welding is commonly used for both high quality and manual welding.

Going on a few centuries to the 1890s C.L. Coffin a man from Detroit was credited the U.S. patent for the metal electrode. This was the first recorded passing of melted metal from the electrode through the arc onto the metal forming a weld. This process made the welds stronger than ever holding longer and looking better as well. They proved this point by having two steel beams one that was riveted and bolted vs welded. The put both through extreme bed test and the welded joints held a lot longer and proved there last. This showed the world that welding was a reliable way to join metals. This sparked a fire buildings were allowed to have more joints and curves opening up a new design for houses and commercial buildings. After this new styles were showed the demands for welding machines went through the roof and the needs for welders as well.

The temperature requirement for forge welding is upto 90 percent of the melting temperature of individual metals. Steel has a lower temperature requirement than iron. The metal may have a shining or wet finish at the welding temperature. Care must be taken to avoid overheating of the metal to the point

Gas metal arc welding was originally made for weld materials such as aluminum, copper, brass, tin and lead. It was also used on steels, but shielding gases were highly expensive in the early 1900s limiting GMAW’s use on steel. It wasn’t till the mid 1900’s for GMAW to really take off. There were many different variations of arc-length, electrode size, and power supply units. Since the MIG welder is so versatile, there are many different types of things to make this piece of equipment.

The different gases produce a different weld because of the way the electricity flows through the arc contacting the base metal

In most welding you will need to know how to study blueprints, sketches, or specification calculates. Welding is the best way of permanently joining metal parts because welding is used in building ships, buildings, and cars. Welding is good for repair because the welds will not come apart unless you cut it with a torch. Welding also is used to join steel beams in the construction of buildings, bridges, and other structures and to join pipes in pipelines. The work that welders do and the equipment they use all come from the company they work with.

Explosion welding is unique, because it is the only kind of welding that can join any metal together into a single piece known as clad. Two metals are placed together with an explosive powder in between. When designated about 2 million pounds of downward force join the two pieces together. Originated in World War I and II, after strap metal became welded onto pieces armor.

When beginning your journey to become a welder you will need specific information to help you start and progress. One of the best ways to start to learn welding

Being a welder is not just a job, it’s a life style dedicated to the many things they do. “Welders use hand held or remotely controlled equipment to join or cut metal parts. They also fill holes, indentations or seams in metal products” (BLS.Gov). Basically, welding is a job for an individual to cut metal to the size needed whether by hand or electronic equipment. After the metal is cut, it is properly welded where it needs to be based on what the blueprint says. “Welding is the most common way of permanently joining metal parts. In this process, heat is applied to metal pieces, melting and fusing them to form a permanent bond.” (BLS.Gov) In other words, welding is just a way of putting metal together just like gluing paper.

The use of thinner gauge Ti and Ni alloys is pushing the aircraft engine industry to ensure high quality welds can be made with lower levels of heat input. Every part we produce goes through our nondestructive laboratory to test the welds under x-ray or die penetrant.

On some accounts a welder can perform a task and not make a good weld. In an account with Northrop Grumman Corp. and the U.S. Navy, some welders and inspectors were careless when it came to performing routine job tasks and guidelines. In an article by the Newport News a welding inspector falsified the passing of welds in a U.S. Navy shipyard. Robert Ruks admitted to falsifying weld inspections on vessels in the shipyard. The Navy stated that, “the navy is considering re-examining 23 welded joints on the submarine the USS New Hampshire”, (Newport News, VA) 11 June 2009: Newspaper Source Plus. Wed. 14 Sept. 2015). Mistakes when welding can cause a bad weld to occur. When running a bead you can go to slow which causes large beads of metal that make the weld sloppy and blotchy, going too fast can cause small tiny beads of metal to not form a constant bead. Those can lead to a weld that can fail its

GMAW (Gas Metal Arc Welding) is more economic; Springer reports that “ GMAW is an economic process because it has higher speeds and higher deposition rates than manual arc welding. There is also no need to constantly change electrodes” ( Page 11). GMAW has a higher speed, which means that you can get the job done faster. It also has high deposition rates which makes the weld look clean and smooth.” This method can be used for a high range of work, but it is not suited for repair work because of it’s weld quality” (Page 4). This process can be used for many variations of work including root welds, joints, T’s, butts, laps, and many more applications. Even though its used for many practices, it is not recommended to use this method for

Aluminium alloys which are widely used across the globe can be produced in two different ways: -