抄録
A laminated and plane-welded electrical steel (LPW) is made in the way that laminated electrical steel sheets plated with Cu and/or Sn are heated in order to fuse the plated Cu andSn, weld the sheets at the surfaces and then combined them together. The LPW has a higher permeability than usual electrical steel plates and a higher electric conductivity than laminated electrical steel sheets. The mechanical strength of LPW is as high as those of electrical steel plates. The 2-dimensionally free shape of LPW is made by punching before welding the sheets at the surfaces. If LPW is used in a voice coil motor (VCM). the size of VCM is small, and the characteristcs of VCM are more improved if the LPW is made of grain-oriented electrcal steels and the easy axises are arranged along the magnetic path of VCM.
