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How many welding and joining processes are available commercially?
There are numerous commercially available welding and joining processes, with the most common ones including arc welding, MIG (metal inert gas) welding, TIG (tungsten inert gas) welding, resistance welding, and laser welding. Additionally, processes like spot welding, electron beam welding, and friction welding are also widely used in various industries. The choice of process often depends on factors such as the materials being joined, the desired strength of the joint, and production efficiency. Overall, the diversity of welding and joining methods enables tailored solutions for specific applications across different sectors.
What is tungsten's nickname?
Tungsten is often referred to as "Wolfram" in many European countries, with its chemical symbol being "W."
What are the ten difference between TIG and MIG welding processes?
ElectrodeTIG welding uses a tungsten electrode that is not consumed during the welding process. MIG welding uses a metal electrode that doubles as filler material for the weld and is consumed during welding.Shielding GasTIG welding primarily uses argon as a shielding gas, with helium occasionally used. Argon is also the primary shielding gas used in MIG welding, but argon mixtures and carbon dioxide are often used for different applications.Filler MaterialTIG welding requires a separate filler material in rod or wire format because the electrode is not consumed. MIG welding delivers the filler material via the electrode.Work Piece MaterialsTIG welding can be applied to just about any metal, from steel to aluminum and exotic alloys. MIG welding was developed for nonferrous metals, but can be applied to steel.DifficultyTIG welding is considered to be more difficult than MIG welding because tighter tolerances have to be maintained between the electrode, the filler rod and the work piece.
Why is a transformer rectifier often prefferred for smaw?
SMAW stands for shielded metal arc welding. The rectifier used in the welding machines must be referring to this type welding.
Which element is used in light bulbs as filment?
Most often it is tungsten.
What is intermittent welding?
intermittent welding (also known as skip welding) is a pattern of welding that allows the weld joint to cool by welding in a series of "skips" on opposite or far sides from the last bead. This pattern is often used for thin material as it is likely to warp if overheated.
The element found in cheaper light bulbs?
Cheaper light bulbs often contain tungsten as the filament material. Tungsten is a cost-effective option for producing light bulbs because of its ability to withstand high temperatures and its long lifespan.
How strong Tungsten is?
It is a extremely durable metal but often mistaken as Tungsten Carbide. Tungsten Carbide is Tungsten ground to a powder with Carbon and compressed then nickel is heated and added as the binding agent or glue. The result is a very hard composition, but it is not a metal and it is not a solid. It is, however brittle. This means it is prone to chipping or cracking when Tungsten Carbide hits a hard surface.
Which element has the chemical symbol 'W'?
The W stands for "Wolfram" which is an alternative name for the metallic element Tungsten. One of the chief ores from which Tungsten is extracted is called Wolframite.
Why it is difficult for a firefighter to hold a hose which ejects a large amount of water at a high velocity?
The answer is very simple and it goes back to a basic law of physics.We all know that for every action, there is an equal and opposite reaction, right? So with regards to a fire hose, as the water discharges from the nozzle, there is force pushing back called nozzle reaction. The narrowed nozzle is forcing the speed of the water to accelerate.The higher the pressure, the higher the nozzle reaction, for a given nozzle diameter. Some of the reaction is dissipated in the friction of the hose on the ground, but a lot of it results in a force pushing the nozzle back toward the firefighters.In short, the amount of force necessary to accelerate that water through the nozzle is about the same as the force pushing the nozzle in the opposite direction from the discharge.For example, if you were to pump 357 gallons per minute at 60 pounds per square inch, through a nozzle orifice of 1 1/2 inches, you would have nozzle reaction of approximately 205 pounds. That means the firefighters would have to push BACK with that amount of force to hold the nozzle in position. If the same amount of water were pumped at the same pressure through a tip with 1 3/4-inch diameter, the force would be closer to 270 pounds. This is a critical consideration when operating a nozzle from the top of a ladder!Sudden Nozzle ReactionsThe nozzle must also be opened and closed slowly to avoid a much higher nozzle reaction due to the static pressure generated at the pump (there is no friction loss when the water is stopped).Ref NFPA Report: Test of Heavy Stream Appliances, 1957.
Why on a periodic table is there a W for tungsten?
Tungsten's chemical symbol is W because it comes from its older, German name "Wolfram." In the early 19th century, tungsten was often referred to as wolfram in Europe, and the symbol W was chosen to represent this element on the periodic table.
What happens when tungsten reacts with silicon?
When tungsten reacts with silicon at high temperatures, it forms a compound called tungsten silicide (WSi2). Tungsten silicide is a hard, refractory material that is often used in the semiconductor industry for making contact with silicon chips. The reaction between tungsten and silicon is mainly driven by the formation of strong covalent bonds between the two elements.
