Valve Casting with lost wax Investment Casting process for Valve Body

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Valve Casting with lost wax Investment Casting process for Valve Body.


Quick Detail:


  • Casting of valve body for flow control industry;
  • Casting process: silica sol lost wax method;
  • Foundry with PED 97/23/EC & AD2000 W0 Certifications;
  • ISO9001:2008 certificated;
  • Chemical composition tested by German spectrometer;
  • NDT such as Dye test, X ray test are available.



Investment casting with ceramic shell process, die making and CNC machining capacity in house. Stainless steel, alloy steel, carbon steel investment castings weight from 10g to 80kg.
The most common material that Winnington cast:

Stainless Steel (70%)

Carbon Steel

Alloy Steel

303, 430, 420, CF3M (AISI 316L), CF8M (AISI 316), CF8 (AISI 304),CD4MCu, CD4MCuN,ANC20,1.4408,1.4517, 1.4306, 1.4581, 17-4PH, SCS1

and more

WCC, 1020, S355JR, SCS16, SCS14, SCS13, 1.0619, WCB, 1045 , LCC

and more


and more


Investment Casting Process:

  • Wax die making: Our wax tooling is made of Aluminum which is easy for machining and fast for cooling, at the same time, light for handling.
  • Wax injection: Filling the entire mould with molten wax, and let it cool, until a desired wax pattern is shaped and harden.
  • Assemble the wax patterns: The wax patterns are welded to a runner system by a heated metal tool according to a certain pattern cluster(tree) design.
  • Investment: The ceramic mould, known as the investment, is produced by three repeating steps: coating, stuccoing, and hardening. The first step involves dipping the cluster into a slurry of fine refractory material and then letting any excess drain off, so a uniform surface is produced. This fine material is used first to give a smooth surface finish and reproduce fine details. In the second step, the cluster is stuccoed with a coarse ceramic particle, by dipping it into a fluidised barrel, placing it in a rainfall-sander. Finally, the coating is allowed to harden.
  • Dewax: The investment is then allowed to completely dry, which can take 16 to 48 hours. It is then turned upside-down and placed in a autoclave to melt out and/or vaporize the wax.
  • Burnout & preheating: The mold is then subjected to a burnout, which heats the mold to remove any moisture and residual wax, and to sinter the mold. The mold is preheated to allow the metal to stay liquid longer to fill any details and to increase dimensional accuracy.
  • Pouring: The investment mold is then placed cup-upwards into a tub filled with sand and be poured.
  • After treatment: The shell is then hammered, media blasted, vibrated, waterjeted, or chemically dissolved to release the casting. Further actions like weld repairing,grinding, shot blasting,CNC machining, electro plating will be taken to get a final cleaned precision casting part.


Pipe Fittings
Marine and Oil
Power & Energy
Other Mechanical Castings



Casting process type

silica sol lost wax casting

Maximum Casting Size


Casting weight


Wall thickness

1.5-2mm Min




CNC machining, CNC lathe

Surface finish types

electro polishing, satin finish, hand polishing, pickled, zinc plating, vibration polishing;

Tolerances Standard

VDG P690

NDT test service

Dye test, X ray test etc


Competitive Advantage:


One-stop Services of Winnington Casting
From wax die making, wax injection, pouring, secondary machining, welding, heat treatment to electro polishing and other surface finishing method.


Send message to this supplier
Mr. Sophia Peng
Tel: 86-752-2652780
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Contact Method
Winnington Casting CO.,LTD,
Xikeng Industrial Zone, Huizhou, Guangdong, China (Mainland)
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