Curing Mold Laminations Miao Yu 05/17/2012

QC on the cross-section 30/30 samples before production 16/500 samples during production 2

Bow Shape Type A and B, to mitigate the edge thickness effect or to have better straightness in the final assembly. Bow shape in type B is due to the coil bow tendency direction = stamping direction 3

Stacking test 4

Plan The vendor is stamping the rest of the laminations (~5000) Deliver by 05/31. QC and surface cleaning to remove the oil Stacking 5 sections, each with more than 1000 laminations Welding Final assembly and gently polishing in inner surface Curing press test Ready to use by August. 5

Welding 6 Short: 2 end sections Long: 3 middle sections