Laminations

This page provides details of typical lamination requirements along with benefits of using chemical milling.

Collection of Laminations

Benefits of chemical milling :

• Low cost tooling

• Customised parts – you design it – we make it!

• Various apertures, shapes and bar combinations

• Variable bar heights

• Burr free & Stress free manufacturing method

• Prototypes made quickly

• High volume capabilities

• Various surface finishes available

Laminations:

• Photofabrication have over 30 years experience in the production of electrical steel laminations for high speed and ultra high speed motors.

• We can manufacture to your specification from a range of high silicon, ferrite core materials. 

• We can advise on metal type/thickness etc. 

• We can produce and bond stacks of laminations (both ‘E’ and ‘I’ profiles) the stack height is completely customizable which incorporates top and bottom resist layers which also acts as an insulated coating and a good bonding agent. The liquid photosensitive resist that we use on most laminations is the ideal solution for the above. 

• Photofabrication lamination standards for all applicable mechanical and physical characteristics meet or exceed the recognized industry standards.

• A layer of rust inhibiting paper (V.C.I. or equivalent) shall be packed between lamination layers.

Photofabrication laminations are made from various grades of electrical steels, silicon steels, nickel-iron alloys, and cold rolled motor lamination steel.

• Cold Rolled Motor Lamination Steel
  Photofabrication provides cold rolled motor lamination steel in various thicknesses (please ask). Laminations produced from cold rolled motor lamination steel are used in fractional motors and transformers where low core losses are not critical and better permeability at a high KG is desired. Laminations made from this material are supplied in a fully stress relief annealed condition.

• Low Nickel-Iron Alloys (50% Nickel)
  Photofabrication provides low nickel alloys in various thicknesses, typically 0.35mm (0.014”). This material shows high initial and maximum permeability for use in moderately low flux density applications, such as: servomotors, relay, armatures, and solenoids. Laminations made from this material are supplied in a fully annealed condition, assuring high permeability.

• High Nickel-Iron Alloys (80% Nickel)
  Photofabrication provides high nickel alloys in various thicknesses, typically 035mm (0.014”). This material has very high initial and maximum permeability for use in low density, high frequency applications, including telecommunications, ground fault interrupters and magnetic shielding. Laminations made from this material are supplied in a fully annealed condition, for highest permeability or lowest total harmonic distortion.

To find out more about the Photo Etching Process please either contact us on 01480 226699, or take “The Process Tour” on our website