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Hairpin

COHR Automotive light ENG.pdf

COHR Automotive light ENG.pdf

…in the production of the electric car is the welding of copper coil pins in the stator of an
electric motor. These rigid pins (called 'hairpins' due to their
'u' shape) replace the copper wire windings that are traditionally used in an electric motor. Because they are much
stiffer…

Microsoft Word - 2018 11 Whitepaper CleanWeld E

Microsoft Word - 2018 11 Whitepaper CleanWeld E


In the assembly process, the individual hairpins are first loaded into slots in the stator. Then,
the ends of adjacent hairpins are welded together in order to connect them electrically; when
the entire motor is finished, all the hairpins will act as a single, long, twisted conductor,…

COHR HighLightFL-ARM Standard DS 1119.pdf

COHR HighLightFL-ARM Standard DS 1119.pdf

…Welding
· Independent power control of center and ring
· Zero-gap overlap welding of zinc-coated steel with no blowouts
· Defect-free welding with high repeatability of copper hairpins
· Up to 80% spatter reduction
· Minimal cracking and porosity, improved stability

COHR HighLightFL ARM Compact DS 1119.pdf

COHR HighLightFL ARM Compact DS 1119.pdf

…Welding
· Independent power control of center and ring
· Zero-gap overlap welding of zinc-coated steel with no blowouts
· Defect-free welding with high repeatability of copper hairpins
· Up to 80% spatter reduction
· Minimal cracking and porosity, improved stability