The investment casting process, known also as lost wax
process, dates back many thousands of years and it is the most ancient
of metal casting arts. In fact the sculptors of ancient Mesopotamia
and Egypt, the Han Dynasty in China, and the Benin civilization
in Africa used this method of casting to produce their intricately
detailed artwork of gold, copper and bronze.
Aztec gold-smiths of pre-Columbian Mexico used the lost wax process
to create much of their elaborate jewelry, and some very nice examples
of these works are from the tribe of Quimbaya, who lived
in a little area between the Cauca river and the Micos and Gauiaya
Europe we find our technology during the sixteenth century, when
Benvenuto Cellini describes in his autobiography the method he used
to create the Perseo,
a great masterwork of italian renaissance sculpture.
cast this 3 ½ tons statue Cellini indeed uses the lost wax process.
Only at the beginning of 1900 pepole start using this technology
for industrial applications.
may quote Dr. Taggart of Chicago, who wrote a detailed study on
the investment casting process in 1907, and who developed a new
wax and an investment material.
technology had a great evolution in the United States during World
War II, due to the need of precision components with complex geometry
(i.e. turbine blades for aircraft engines).
the fifties the lost wax process started to spread over Europe,
specially in those fields where complex shaped components and tight
tolerances are required.
very first industrial applications of the investment casting process
in Italy took place in Gardone Val Trompia, for the production of
then Metrocast Italiana has gained credibility all over Europe as
a qualitymanufacturer of a large range of castings.