Pipe & Fittings

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Impeller of CF8M hardened stainless steel casting by lost wax ceramic shell process.
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Quick Detail:
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1. Hardened Stainless steel part of impeller cast by lost wax process;
2. Material: CF8M (316);
3. Max size: 500X500X350mm;
4. Weight: 3.5kg;
5. Chemical composition tested by German spectrometer;
6. PED and ISO9001:2008 certificated;
7. NDT test can be operated.
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Description:
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316 (CF8 stainless steel) lost wax castings for pump industries, weights up to 80kg;
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We perform steel lost wax casting process in a wide range of alloys, please refer to below table for the most common material that Winnington cast:

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Stainless Steel (70%) | Carbon Steel | Alloy Steel |
CF3M (AISI 316L), CF8M (AISI 316), CF8 (AISI 304),CD4MCu, CD4MCuN,ANC20,1.4408,1.4517, 1.4306, 303,? 430, 420, 17-4PH, SCS1 and more | 1020, 1040, SCS16, SCS14, SCS13, 1.0619, WCB, WCC,S355JR, 1045 , LCC and more | ANC2,CLA12C,42CrMo,8Q,4140,6150 and more |
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Overview of ?Lost Wax Method
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1.TOOL MAKING
A wax injection mold is designed and built to produce castings per customer specifications.
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2. WAX PRODUCTION
A wax pattern is produced from the wax injection mold.
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3. PATTERN ASSEMBLY
Wax patterns are attached to gating system by hot knife.
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4. SHELL MAKING
The pattern assembly is dipped into a ceramic slurry, coated with a refractory material and dried. The process is repeated until the desired thickness and strength is achieved.
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5. DEWAXING
Using regulated steam pressure, an autoclave melts and remove the wax from the ceramic shells.
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6.SHELL PREHEAT
High temperature ovens cure and preheat the ceramic shells before pouring.
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7. CASTING
Pre-heated Ceramic cavities are poured with the molten metal.
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8.KNOCK OUT
The ceramic shell is removed by vibration knocking and the cluster is cleaned.
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9.CUT OFF
Castings are cut off from the gating system.
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10.MACHINING,SURFACE FINISH,AND INSPECTION
After cut off and gate removal, all secondary finishing operations are performed. Each casting is inspected according to customer specifications and requirements.
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Applications:
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Pumps &?Valves
Pipe Fittings
Machinery
Power & Energy
Automotive
Marine and Oil
Other Mechanical Castings
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Specifications:

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Standards | ASTM,JIS,DIN,BS,MIL |
Maximum Casting Size | 500*500*350mm |
Casting weight | 10g~80kg |
Wall thickness | 1.5-2mm Minimum |
Casting process type | silica sol lost wax casting method |
Machining capability | CNC machining, CNC lathe |
Surface finish | electro polishing, satin finish, hand polished, pickled, zinc plating, vibratory polishing; |
Tolerances | VDG P690 Germany |
Physical performance | Tensile test, Impact test, Hardness test |
Chemical composition test | Spectrometer |
NDT test | Dye test, X ray test etc |
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Competitive Advantage:

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One-stop Services to save your cost and time:?

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Wax die and fixture Making ?

With in house expertise and tool shop, we have the complete engineering team to create molding / tooling necessary for production.

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CNC Machining?????

Winnington is equipped with High-precision CNC lathe/milling center to process the interior and exterior of various types of curved surfaces, such as cylinder, cones, contrate, chamfer, bevel edges, screw thread, milling holes and boring holes, while conforming to the JB/T8324.1-96 Standard.

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Surface Finishing

We provide customers with various surface finishing treatments, including hand polishing, passivation, sand blasting, shot blasting, barrel finishing and vibratory finishing. To meet the growing needs of our customers, special treatments may also be arranged.

Testing and Inspection ?

We provide a number of testing and inspection services including ultrasonic inspection, magnetic particle inspection, material hardness and/or material properties testing.