![](https://rainbowtechnocast.com/wp-content/uploads/sites/297/2020/06/die-tool.gif)
Die Tool Manufacturing
A single or multi cavity of product is prepared in form of metal with adding all the contraction of wax & metal to make wax pattern, which will match shape & dimension of casting parts.
![](https://rainbowtechnocast.com/wp-content/uploads/sites/297/2020/06/wax-injection-1.gif)
Wax Injection
Virgin Or Re-Claimed wax in semi liquid form is injected in single or multi-cavity die tool by using Wax injection press (Fully Auto, Semi Auto, Manually Operated). These processes will give wax pattern which will be the model of parts intended for casting.
![](https://rainbowtechnocast.com/wp-content/uploads/sites/297/2020/06/wax-pattern-assembly.gif)
Wax Pattern Assembly
Clean wax pattern are assembled on runner with all handling and knock off arrangements for next process. this process is backed by methoding Engineer.
![](https://rainbowtechnocast.com/wp-content/uploads/sites/297/2020/06/shell-building-1.gif)
Shell Building
First, Primary Coating applied on wax pattern assembly by using ceramic slurry & sand, surface finish depends on primary coating & wax pattern surface. Then repeated back-up coating will apply with defined drying time to form a self supporting shell.
![](https://rainbowtechnocast.com/wp-content/uploads/sites/297/2020/06/de-waxing-12.gif)
De Waxing
At De-waxing stage wax is melted out by applying steam pressure (Using Autoclave). Now, shells having cavities inside.
![](https://rainbowtechnocast.com/wp-content/uploads/sites/297/2020/06/melting.gif)
Melting
Shells are preheated at specific temperature & time. Specific molted metal are melt in induction melting furnace. De-gassed & De Slaged molted metal poured in preheated shells at specific temperature.
![](https://rainbowtechnocast.com/wp-content/uploads/sites/297/2020/06/cast-shells-release.gif)
Knock Out
After cooling of cast shells, ceramics are removed by mechanical vibration and then parts are separated by cut-off machines or gas-arc cutting machines.
![](https://rainbowtechnocast.com/wp-content/uploads/sites/297/2020/07/heat-treatment-furnaces-712660861-rszww1200-90-200x200-1.jpg)
Heat Treatment
Castings are heat treated in house, according to the required standard in programmable heat treatment furnace.
![](https://rainbowtechnocast.com/wp-content/uploads/sites/297/2020/06/castings.gif)
Fettling
heat treated parts are send for gate grinding & surface cleaning depending upon requirement of finish products.
![](https://rainbowtechnocast.com/wp-content/uploads/sites/297/2020/07/finishing.png)
Machining
Castings are machined inhouse using various numerical control CNC, VMC and VTL machines to achieve dimensional accuracy as per the drawings.
![](https://rainbowtechnocast.com/wp-content/uploads/sites/297/2020/07/testing.png)
Testing
The parts are inspected for surface and sub-surface defects. Visual and liquid penetrant inspection is done for surface defect identification. Radiography and magnetic particle inspection is done for sub surface defect detection.Pressure testing insures leak free components.
![](https://rainbowtechnocast.com/wp-content/uploads/sites/297/2020/06/final-1.gif)
Final Inspection
Finished products of investment casting are inspected visually & dimensionally as per customer supplied drawing, purchase order & technical data sheet.