Thermal
expansion is the tendency of a material to change in shape, volume and area in
response to the change in temperature. Fine ceramic products used to have low
coefficients of thermal values in respect to changes in temperature, which
depends on the bond between the atoms of the materials.
Ceramic
is a known low thermal expansion
material and poses excellent thermal, mechanical, chemical and electrical
properties. Some common machinable ceramics are Macor, Macerite, Photoveel and
more. Macor has high electrical resistivity, high dielectric strength and can
withstand temperature upto 1000 degree Celsius. It can easily be machined into
complicated shapes and precision parts using different traditional machining
tools.
Non-machinable
ceramics such as high purity Alumina, Zirconia, Aluminium Nitride, Silicon
Carbide, Silicon Nitride, Boron Nitride, and more also used in various
applications. It requires best ceramic machining tools and equipment such as 3
and 5 axis machining centers as well as precision measuring instruments in
order to deliver quick results without compromising on the quality part.
For
machining Ceramics, companies generally employ diamond tools, machining centers
and jigs which are especially designed and produced to perform shaping, carving,
embossing, grooving, hole drilling and tapping effectively. Many companies also
use slicing machines to cut low thermal
expansion materials effectively as it is not only affordable but also
reduce wastage of material during the process.
Machining
ceramics require clean rooms equipped with vacuum constant temperature drying
machine, hot air drying machine, de-airing sealer and 5 tanks deionized water
ultrasonic cleaning machine to meet requirements of the semi-conductor
industry.
