|
Ceramic shaping processes
The basic technology for the manufactoring of piezoceramic components is the pressing of shaped bodies
using spraydried granular material. This is achieved using high-capacity
presses with up to 1 MN compacting force. The shaped bodies are either
manufactured true-to-size, taking into account the sintering contraction, or
with machining excesses which are removed to achieve the required precision.
By using high-production inboard diamond sawing equipment, it is possible to
manufacture reasonably priced components (disks, plates, etc.) with a
thickness as low as 0.2 mm. Modern ultrasonic machining techniques are used
to manufacture thin-walled tubes with wall thicknesses of 0.5 mm as standard
products.
Cofiring technology is available, in particular for the
production of multilayer components (PICMA series). In it, after the
application of noble metal electrodes by means of special screen printing
techniques and subsequent lamination, a ceramic film of at least 25 µm -
made in a process known as tape casting - is applied and sintered in a
onestep process.
|
|