Process

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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.

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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.

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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.

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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.

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De Waxing

At De-waxing stage wax is melted out by applying steam pressure (Using Autoclave). Now, shells having cavities inside.

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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.

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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.

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Heat Treatment

Castings are heat treated in house, according to the required standard in programmable heat treatment furnace.

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Fettling

heat treated parts are send for gate grinding & surface cleaning depending upon requirement of finish products.

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Machining

Castings are machined inhouse using various numerical control CNC, VMC and VTL machines to achieve dimensional accuracy as per the drawings.

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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.

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Final Inspection

Finished products of investment casting are inspected visually & dimensionally as per customer supplied drawing, purchase order & technical data sheet.

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