ATUL TECHNOCAST Pvt. Ltd. have the following Process facilities.
With the help of tools (Die), wax patterns are produced by injecting wax under required pressure.
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 manual coating. This is one of the most specific and important stages of the process,
At ATUL TECHNOCAST wax assembly designing is backed by rich computerized data bank and highly experienced methoding team of engineers.
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.
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 unitsare 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.
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.