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How to manufacture parts in mica ?

Updated: Aug 2, 2023

Produced in rectangular sheets, tubes or rolls, rigid and flexible, mica laminated sheets and rolls play a crucial role in various application, which may vary from industrial furnace manufacturing, electric transportation to simple domestic appliance such as microwave. The mica combines outstanding electrical insulation under high temperature (up to 1100°C), mechanical resistance, chemical neutrality, low thermal conductivity and low porosity. Few material combines those properties without noticeable alteration in high temperature environment.




“The mica combines outstanding electrical insulation under high temperature (up to 1100°C). ”

Mica is a naturally occurring mineral. It is a hydrolysed Silicate of Aluminum and Sodium or Aluminum and Potassium. Naturally occurring in thin sheets, it 'built-up' from the mica flakes into thicker sections by laminating with synthetic resins, the matrix is very soft and brittle due to the large number of extremely thin layers stacked together, requiring advance methods to carefully shaped it.



“Mica is a naturally occurring mineral. Few material combines those properties without noticeable alteration in high temperature environment. ”

Two main type of mica grade are common: Muscovite and Phlogopite, the main difference being the thermal resistance to high temperature while maintaining other properties (ex: dielectric strength).


Various technologies available in the manufacturing are applied to cut and shape mica: water jet, dry milling, laser cutting or stamping are among the most popular ones. Through the years, ATIMA-TPIM has developed specific methods, know-how and equipments to shape mica and match the customer expectations. Specialised tooling, tuned machine parameters (ex: cutting speed, feed rates) to obtain the right cutting edge makes mica machining challenging. Our team has gained unparalleled experience in producing mica parts with the expected quality, the absence of any delamination or cracks, and the exacted edge sharp precision.



“With the last 5 years growth of the electrification market, the demand for insulation parts in mica is obviously not faltering. ”

With the last 5 years growth of the electrification market, the demand for insulation parts and sealing gaskets in mica is obviously not faltering. To remain competitive and improve the productivity in the electrification industry, our material buyers are sourcing the best industrial grade mica from the mica producers. In parallel, ATIMA-TPIM has developed dedicated methods and strategies to cut and shape the mica at scale into a wide variety of complex shape and size. With our most recent equipments investment in new machining technologies, we cut mica sheets at a thickness from 0,1 mm through 100 mm with the most stringent customer specifications.



Interested in buying mica or machine mica part, do not hesitate to contact us.

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Rue des Alouettes 90

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Belgium

info.composites@atima-tpim.be

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