Investment Casting is also known as precision casting and manufactured casting by a special process called Lost Wax / Feinguss / Microfusion Process, this is explaining as under by different stage.

• 1. Tool/Die Making.

  Tool/Die to be prepare by CNC & VMC machine in which is cavity same as original casting & pressurized liquid wax injected into it and & create wax pattern, commonly use aluminum alloys for easy machining, high strength, high cooling rate & easy handling during wax injection.

• 2. Wax Preparation

  Petroleum wax used for pattern production, which melted in melting pot & prepare as per QCP requirement of wax pattern in semi liquid form.

• 3. Wax Injection (Wax Pattern Making)

  Pattern Wax is feed into the hydraulic injection press & injected into the tool/dies. After cooling wax get solidified & same to be removed from die.

• 4. Assembly (shell Making/Cluster Making)

  After cleaning and finishing the pattern, the assembly is prepared by Runner, riser & Sprue. This Runner, Riser & Sprue are made from wax by wax extrusion press.

• 5. Ceramic Coating

  Than assembly (Shell/Cluster) are wash into water & dip into ceramic slurry (Binding Slurry) & apply zirconium Sand by Sand Raining Machine this process call primary coat & same process follow repeated 8 to 12 Times by different mesh size alumina contain ceramic sands, is called secondary process. Casting’s finishing is depending upon primary coating and strength of shell is depending upon secondary coating. Now final drying is done in shell trolleys. In weather controls drying room at Temperature 20- 25C’& maintain humidity at 50-55 %.

• 6. Dewaxing

  Now dyed shell are put into dewaxing autoclave which is pressured chamber & Steam injected at 6 – 7 KG/Cm2 pressure so wax are getting melted & remove from Shell. Now this ceramic shell are fired at 1000 C’ in Shell Backing furnace to achieve high thermal strength to withstand high Temperature of Liquid metal during pouring. Liquid wax is recycling to re use for pattern making.

• 7. Melting & Pouring

  Now metal is melted in induction Furness @ 1580- 1650 °C. & prepared accordingly standard requirement of chemical properties in metal & poured into heated shell.

• 8. Knockout & Shell Cutting

  After cooling poured shell are knockout in hammer machine & remove ceramic slurry & heat identification transfer into casing Pcs & finally casting remove by Welding cutting or Gas cutting process & remaining runners & riser are reused for melting.

• 9. Heat Treatment

  Semi finished Casting is heat treated accordingly standard requirement by Solution Annealing, Normalization, and Tempering to achieve mechanical properties of casting.

• 10. Fettling

  After heat treatment castings are final finishing are carried out by different process like pneumatic grinding, grit blasting etc.

• 11. Machining & assembly

  Finished casting are duly machine in CNC & VMC accordingly requirement of drawings. Also provide service to customer for providing semi assembly of machined casting.

• 12. Value added Process

  Depend on special requirement microfusion carried out various tests like Pressure testing, Non Destructive Testing (MP, DP, UT, RT), IGC testing, Impact testing, through in house facility or by working with well-known external agencies.

• 13. Final Inspection

  We apply 100% visual inspection followed by dimensional inspection. & NDT is done as per customer’s requirement.

• 14. Packing & dispatch

  Finally product duly packed into Wooden Boxes or Corrugated Boxes followed by fumigated condition & sea worthy packing with all tracabilites & dispatch as per customer suggested logistic.