Delivery Time:30-90 days
Certification:PED/AD2000

Precision Casting for valve made of CF8M by investment casting silica process.
 

Quick Detail:

Valve body- Investment casting part manufactured by Winnington with ceramic shell casting process; Casting type: silica sol lost wax process; PED/AD2000 certificated; Chemical composition tested by German spectrometer; X ray test available.

Description:

 
Stainless steel investment castings weight from 10g to 80kg, electro polishing or vibration polishing finish available.
 
The most common material that Winnington cast:

Stainless Steel (70%)	Carbon Steel	Alloy Steel
CF8 (AISI 304), CF3M (AISI 316L), CF8M (AISI 316), CD4MCu, CD4MCuN,ANC20,1.4408,1.4517, 1.4306, 303,  430, 420, 17-4PH, SCS1 and more	1020,SCS16, SCS14, SCS13, 1.0619, WCB, WCC,S355JR, 1045 , LCC and more	ANC2,CLA12C,42CrMo,8Q,4140,6150 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.

 
 
Applications:

 
Pumps & Valves
Pipe Fittings
Automotive
Marine and Oil
Machinery
Power & Energy
Other Mechanical Castings
 

 
Specifications:

Standards	ASTM,JIS,DIN,BS,MIL
Maximum Casting Size	500*500*350mm
Casting weight	10g~80kg
Wall thickness	1.5-2mm Min
Casting process type	silica sol lost wax casting
Machining	CNC machining, CNC lathe
Surface finish	electro polishing, satin, hand polished, pickled, zinc plating, vibration polishing;
Tolerances	German VDG P690
NDT test	Dye test, X ray test etc

 
Competitive Advantage:

 
Winnington One-stop Services
 
Design Assistance
We assist our customers with concepts, estimating manufacturing costs, manufacturing techniques and material considerations. We are able to participate in upgrading, redesigning, re-evaluating or modernizing ex