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FROM START TO FINISH CASTING WAX INJECTION:-
With the help of tools (Die), wax patterns are produced by
injecting wax under required pressure. At INTRICAST highly
sophisticated design wax injection presses are used.
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WAX ASSEMBLY:-
Produced wax pattern from single cavity or multi cavity tools
are assembled on wax runners with wax made pouring cup, tie-bar
and required handling arrangements for robotic or manual coating.
This is one of the most specific and important stages of the
process, At INTRICAST wax assembly designing is backed by
rich computerized data bank and highly experienced methoding
team of engineers.
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SHELL
MANUFACTURE :-
The wax assembly is coated with a ceramic shell by repeated
dipping in ceramic slurries and alternately in dry beds of
sand and clays, heavy or thick sections are features of any
part, additional coating are to give added strength to the
shell. Thus eliminating bulging or distortion of the casting
to complete this stage, the ceramic shell is heated under
pressure in an autoclave and the wax removed by melting, leaving
a hollow shell. The most crucial stage of the shelling process
is the primary coating, where a very fine grade of sand is
used. This in turn results in a casting with excellent reproduction
detail and the designated surface finish.
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CASTING :-
The hollow shell (after removing the wax) is ready for
firing, which pre-heats in shell backing furnace and prepares
it to receive the specified alloy. Induction melting units
are used to melt the alloy. Strict control of the shell backing
temperature is one of the important factors. Having melted
and de-gassed the molten metal, the pre-heated shell is filled
to the required level and left to solidify.
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FINISH :-
When metal filled ceramic shells are fully cooled, the ceramic
shell is removed mechanically from the cast assembly. All
cast parts are then removed from the runner system by cut-off
wheel or conventional engineering methods. INTRICAST offers
a choice of finishes and appearance achieving by using a variety
of blasting techniques and chemical process.
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