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Winnington Casting Co., Ltd
Expert of stainless steel kitchen and bathroom products, investment casting parts!
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Pump Precision Investment Casting Stainless Steel By Silica Sol Lost Wax Process

Pump Precision Investment Casting Stainless Steel By Silica Sol Lost Wax Process

Place of Origin : China
Brand Name : Winnington
Certification : ISO 9001:2008, PED/AD2000
Model Number : Custom specification
Minimun weight : 20g
Maxium weight : 80kg
Minumum wall thickness : 1.5-2mm
Max dimensions : 500*500*350mm
Capacity : 120Ton/month
Standards : AISI,BS,DIN,JIS,GB
casting process : Silica sol lost wax casting
Machining : CNC machining,CNC lathe
surface finish : electro polish,satin,hand polished,pickled,zinc plating
MOQ : 20pcs for Precision Investment Casting
Price : Customer specification for Precision Investment Casting
Packaging Details : Air bubble or foam paper packing for Precision Investment Casting
Delivery Time : 45-90 days for Precision Investment Casting
Payment Terms : TT,LC
Supply Ability : 120 Tons/Month for Precision Investment Casting
Port : Shenzhen
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Pump Precision Investment Casting Stainless Steel By Silica Sol Lost Wax Process


Quick Detail:



1. SS304 hood of a shaft on a diving pump;
2. Manufactured by silica sol lost wax process;
3. Max size: 500*500*350mm;
4. Max Weight: 80kg;
5. Chemical composition tested by German spectrometer;
6. ISO9001:2008 certificated;
7. PED/ AD2000 certificated;



Description:



We cast stainless steel, carbon steel, alloy steel up to size 500*500*350mm; NDT service available;

The most common materials that Winnington cast:

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, S355JR, 1045 , LCC

and more

4140, 8Q, ANC2,CLA12C,42CrMo,6150

and more




Winnington uses Lost Wax Method for casting:


1. Mold making. A wax mould is made according to the CAD system.
2. Wax Model-making. Molten wax is poured into the mould and formed a model that exactly same shape as the cast part.
3. Wax assembly. The wax patterns are connected to the runner system by hot knife according to certain rules. When this finish, a pattern tree is ready.
4. Slurry. The wax pattern tree is dipped into a slurry of silica, then into a sand-like stucco, or dry crystalline silica of a controlled grain size. The slurry and grit combination is called ceramic shell mould material, although it is not literally made of ceramic. This shell is allowed to dry, and the process is repeated until at least a half-inch coating covers the entire piece. The bigger the piece, the thicker the shell needs to be.
5. Burnout. The ceramic shell-coated piece is placed cup-down in an autoclave, who hardens the silica coatings into a shell, and the wax melts and runs out. This process makes hollow in the shell where formerly occupied by the wax.
6. Pouring. The shell is preheated in the clave to harden the patches and remove all traces of moisture, then placed cup-upwards onto a sand bed. Metal is melted in a furnace, then poured carefully into the shell. The shell has to be hot because otherwise the temperature difference would shatter it. The filled shells are then allowed to cool.
7. Release. The shell is hammered or sand-blasted away, releasing the rough casting. The gates, which are also created in metal, are cut off.
8. Machining and finishing. The casting is shot blasted and then machined to required tolerance if necessary. Further finish like plating or polishing can also be operated according to customer needs.


Applications:



Pumps
Valves
Pipe Fittings
Marine, Gas and Oil
Machinery
Automotive
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, vibratory polishing;

Tolerances

According to VDG P690

Physical performance

Tensile test, Impact test, Hardness test

Chemical composition test

Spectrometer

NDT test

Dye test, X ray test etc



Competitive Advantage:


By injecting wax into a permanent-molding die to form a pattern, investment casting became the solution for many complex parts that are required in large quantities and almost applicable for all alloy.

Pump Precision Investment Casting Stainless Steel By Silica Sol Lost Wax Process



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Pump Precision Investment Casting Stainless Steel By Silica Sol Lost Wax Process Images

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