Home > Services > Precision Investment Casting Process

Step 1. MOLD DESIGN

  • The mold will be designed by our engineer. The mold will be purchased from a mold factory.

Step 2. WAX INJECTION

  • Injection molding produces wax designs for the desired castings. This process is called patterns.

Step 3 . ASSEMBLY TREE

  • Casting clusters or assembly trees are formed by attaching patterns to a central wax stick, called a sprue.

Step 4. SHELL MAKING

  • To build the shell, the assembly is immersed in a liquid ceramic slurry and then in a bed of extremely fine sand. Up to SEVEN layers can be applied in this manner.

Step 5. DEWAX

  • When the ceramic is dry, the wax will be melted. The melted wax will flow out.

Step 6. CASTING

  • During the conventional process, the shell is filled with molten metal by gravity pouring, which cools into solid parts, gates, sprues, and pouring cups.

Step 7. KNOCKOUT

  • The ceramic shell will be broken off by vibration or a knock-out machine after the metal has cooled and solidified.

Step 8. CUT OFF

  • A high-speed friction saw is used to cut away the parts from the central spruce.

Step 9. GRINDING

  • The casting pouring part will be ground carefully after the casting has been cut off.

Step 10.Inspection and Post Treatment.

  • Inspectors will inspect the casting according to the drawing and quality request. Unqualified parts will be repaired and inspected again if necessary.

Step 11. FINISHED CASTINGS

  • The metal castings are ready for shipment after surface finishing operations making them identical to the original wax patterns.