Here are some of the latest developments from the word of welding. Read on to learn more.
Laser Welding
Laser welding is used for processes that require high welding speed, low thermal distortion, and small weld seams. The laser is an acronym for Light Amplification by Stimulated Emission of Radiation. Thus, laser welding is actually a non-contact process. The laser serves as a source of concentrated energy which allows the material to heat faster. There are three types of welds that can be achieved through laser welding. These are conduction, conduction-penetration, and keyhole.
Laser welding works well in high alloy metals and can be used in open-air conditions. Unlike other methods, it does not require filler metals and is extremely accurate. Its application includes the production of medical equipment, electronics, and jewelry.
Friction stir welding
Friction stir welding is a process invented in Cambridge. It works through a rotating tool that presses into the materials’ joint and traverses along the weld path. The materials are welded through frictional heat generated by the rotating shoulder of the machine. The shoulder also contains the softened material which, in the process, becomes a solid phase weld. Just like laser welding, it does not require filler materials and is used in joining components made of aluminum and other alloys. When components are restrained properly, friction stir welding results in a high quality and solid weld.
Advanced Arc Welding
Arc Welding is a process of fusing metals together. In this process, electric current is used to create an electric arc between the materials and an electrode. With the help of heat, the filler metal placed between the joints of the two materials is melted. When it cools and solidifies, a metallurgical bond is formed. Since the joint is a mixture of different metals, the weld potentially has the same strength as that of the component metals. This process is used in welding non-ferrous metals. It is also widely applied in the manufacture of space vehicles and bicycles. Welds produced by this process are very resistant to corrosion and cracking even after a long period of time thus, it is suitable for crucial welding operations such as sealing of spent nuclear fuel canisters.
Source: https://www.weldinghandbook.com/advancements-in-welding-technology/
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