Manual Welding Technology
What is manual welding?
Manual welding is a technology used extensively at LaserNett that joins metal of various materials, shapes and configurations together to form a strong bond between them.
Welding is a metal fabrication process that joins metals together through a process called coalescence. Coalascence is a process that’s accomplished by melting metal work pieces and adding a filler material to form a pool of molten material that cools and binds together to make a strong joint.
Tungsten inert gas (TIG) welding, is a manual welding process that uses a nonconsumable tungsten electrode, an inert or semi-inert gas mixture and a separate filler material. TIG welding is extremely useful and is a process typically used when welding thin materials. This method of manual welding is characterized by a stable arc and high quality welds, but it requires significant operator skill and can only be accomplished at relatively low speeds.
Metal inert gas (MIG) welding, is a semi-automatic or automatic process that combines two metals by using a filler wire with a current to produce the electrode. Inert gas is also used simultaneously to protect the weld from any air contaminants. MIG welders use a trigger to dispense the wire that is fed from a spool to the weld joint. The welder controls the process of feeding the small electrode or wire continuously and semi-automatically. MIG welding can be used on all thicknesses of steels, aluminum, nickel and stainless steel.
Spot welding is a manual welding method used to join overlapping metal sheets of up to 3 mm thick. Two electrodes are simultaneously used to clamp the metal sheets together and to pass current through the sheets. The advantages of this method of welding include efficient energy use, limited workpiece deformation, high production rates, easy automation, and no required filler materials. Weld strength is significantly lower than with other welding methods, making the process suitable for only certain applications.
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