Remote laser welding and cutting

January 5, 2016 6:12 pm

An overview on the advantages and potential application areas of remote laser welding and cutting
 The high welding speeds coupled with an excellent automatic operation and the possibility to control the quality online during the process make the laser welding a common joining method in the modern industrial production. Thin and small weld seams and low thermal distortion are additional advantages.
Satish M. Bhat, Managing Director, Ador Welding Ltd says, “The application range is very wide covering finest welding of non-porous seams in medical technology to precision spot welding in electronics or the jewellery industry, to deposit welding in tool and mould-making and welding complete car bodies in automobile construction.”
LaserLaser stands for Light Amplification by Stimulated Emission of Radiation. The laser beam is a coherent (single phase) light of a single wavelength (monochromatic). The laser beam has low beam divergence and high energy content and thus will create heat when it strikes a surface.
The primary types of lasers used in welding and cutting are:• Gas lasers: Use a mixture of gases such as helium and nitrogen. There are also CO2 or carbon dioxide lasers. Carbon dioxide lasers use a mixture of high purity carbon dioxide with helium and nitrogen as the lasing medium.
• Solid state lasers: Nd: YAG (Rod Laser)-Neodymium Yttrium Aluminium Garnet
Yb: YAG (Disk Laser) – Ytterbium Yttrium Aluminium Garnet
Ruby Laser
• Diode lasers.
Laser beam welding is a non-contact process that requires access to the weld zone from one side of the parts being welded.
The weld is formed as the intense laser light rapidly heats the material – typically calculated in milli-seconds.
Laser output is not electrical in nature and does not require a flow of electrical current. This eliminates any effect of magnetism and does not limit the process to electrically conductive materials.

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