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Fabricated Mica

The term FABRICATION applies to various processes, such as cuttings, stamping and punching of natural sheet mica to a specified size, shape, thickness and design within close dimensional tolerances for electrical and electronic end-uses.

Natural mica being available only in flat sheets, fabrication of mica are per- formed on a production basis by using foot or power punch presses by the help of a compound die similar to those used in metal stampings. Where the quantities are not large enough to permit the cost of a die, mica may also be hand-sheared, drilled or lathe turned on any of the common tools used for machining metals. A template is used for accurate dimensional measurement. Machine speeds should be similar to those used for machining brass.

Normally, mica is fabricated with compound dies by foot or power punch process, especially if the finished piece contained perforation of any kind. A compound die punches the outside shape and all the inside holes with one stroke of the press most accurately.

A different die is required not only for each change in the pattern, but also for each change in thickness for precision work. The mica is fed to the press by hand. Mica pieces whether in the form of block, thins, or films, are usually calibrated to close range of thickness for precision punching, as it is an important variable in the process. An uniformly thick mica fed to a die improves the cutting quality of the die and produce parts having contour and holes. Mica films for capacitors are usually fabricated within a very close range of thickness tolerances.

Key Benefits

  • Customized to any critical shape, thickness and sizes.
  • Ready to assemble material. No need of large inventory.


Declaimer Statement

Technical Data, Properties and specifications related to products described or mentioned are based on practical experience and should be used as guidelines only. We are not responsible for any loss or damage.

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Copyright 2001 Tough International (P) Ltd.
Last modified: 01/14/02