Laser welding technology is increasingly being utilized in several industrial
processes ranging from the production of micro electronics to shipbuilding.
However, amongst various applications, the technology has gained considerable
acceptance in automotive industries due to its advantages of being cost
effective, flexible and faster. The technique has been extensively used for
welding automotive parts like bumper, seat rests, tracks, recliners, roof rail,
tunnel, motor, gearbox, torque converters, clutches, side panels, power train,
exhaust systems and so on.
Benefits of the technique in automotive industry
Laser welding offers many advantages over other joining processes in various
automotive manufacturing processes due to its: High productivity Low distortion
rage High wholesale butt welders speed and strong welds Less distortion on work pieces
Unmatched advantages in intricate and thin-walled components Higher production
rates Low maintenance Low heat input Little or no joint preparation; hence saves
time and money High degree of accuracy due to precision weld beads Ability to
join dissimilar metals with no filler metal Capability to join wide arrays of
metals and alloys These benefits have made this welding technique popular and
suitable for many industrial applications that used resistance welding in the
past. Some of the most common types of welding laser types used by automotive
industries worldwide are CO2, solid state and fiber lasers. However,
advancements in technology have resulted in the invention of high power diode
lasers to carry out specific welding applications.
Due to improved performance, high power diode welding has received large attention and is slowly replacing traditional laser techniques in many industrial applications. Types Laser welding - can be broadly classified as conduction and keyhole welding. Both these welding have been extensively used in automotive industry for several complicated joining processes. Let us understand these types in brief. Conduction welding – In this welding type, heat is transmitted from the surface to the material by thermal conduction.
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