Our Proccess

Meena Cast Pvt. Ltd. is well equipped with the ultra-modern machineries and technologies to follow department-wise investment casting. Facilities in process casting consist of Cut-off, Manual and High Pressure Belt Grinding, Sand & Shot Blasting, as well as TIG welding machines. Heat Treatment Furnace and water quenching services add mettle to these investment castings. Here is our process:

1. DESIGN

After getting consultation from Meena Cast Pvt. Ltd., a drawing is provided to Meena Cast Pvt. Ltd. by the client, defining geometry, required finishing, and reception criteria. As per the complexity, tooling can be designed with suitable feeding included wherever possible.

2. WAX INJECTION

Molded wax patterns from the single or multi-cavity tools create an assembly or cluster of the tree assembled proceeding wax runners having wax-made pouring cups, tie-bar and necessary handling arrangements to provide manual or robotic coating. The designing of wax assembly is among the most precise and significant stages of the procedure, backed by our highly experienced engineering team.

3. WAX ASSEMBLY

Molded wax patterns from the single or multi-cavity tools create an assembly or cluster of the tree assembled proceeding wax runners having wax-made pouring cups, tie-bar and necessary handling arrangements to provide manual or robotic coating. The designing of wax assembly is among the most precise and significant stages of the procedure, backed by our highly experienced engineering team.

4. SHELL BUILDING

The shell can be built through dropping the assembly into themelted ceramic slurry as well as coated with good ceramic refractory. Equal to eight added coatings are given to provide additional strength to the applied shell.The most important stage of this shelling procedure is its primary coating, in which textured sand of extremely good quality is used. This actually results in the investment casting with outstanding reproduction details and chosen surface finishing. After drying, the process is again repeated with coarser refractories until the self-supporting mould or shell is made.

5. DEWAXING

When the ceramic shell becomes dry; its wax is melted either through heating under pressure with autoclave or heating in the wax bath, making a negative impact of the assembly in the shell.

6. CASTING

After removal of the wax, the hollow shell is all set for firing that the pre-heats in the shell help furnace at higher temperature to trash the shell, removing all the residual traces for wax as well as pre-heat to pour. Induction melting furnace can be used for melting the metal with anticipated melting point. Severe control over shell backing temperature as well as cooling rates are among the significant factors to make sure investment casting integrity and metal purity. Having melted as well as de-gassed the melted metal, a pre-heated shell reaches the necessary level with required solidify.

7. KNOCKOUT

When the metal-filled ceramic shells are solidified and fully cooled, the ceramic shellsare broken from the cast assembly through mechanical vibrating machines, vibrations or chemical cleaning or water blasting.

8. CUT OFF

Then, the cast parts are removed from a runner system through cut-off wheels or predictable engineering techniques.

9. FINISHING

After negligible finishing appearance achieved using different blasting methods and chemical procedure, the metal casting (same like the original wax pattern) is all set for the shipment to our customer.

10. VERIFICATION

Each & every stage of the process is followed with Traceability and Routine Inspection according to the Activity Charts.