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Winnington Casting CO.,LTD

[Province: Guangdong ]

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Duplex Stainless Steel CD4MCu Impeller Investment Casting using ceramic mold

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Duplex Stainless Steel CD4MCu Impeller Investment Casting using ceramic mold

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Duplex Stainless Steel CD4MCu / 25-5PH Impeller Investment Casting using ceramic shell mold process.

Quick Detail:

Investment casting of a pump impeller;
Material: Duplex stainless steel CD4MCu / 25-5PH;
Size: 320X320X450mm;
Weight: 3.45kg;
Casting method: silical sol lost wax process;
PED and ISO9001:2008 certificated foundry;
Chemical composition test operated before each casting process;
Heat No. Tracing.

Description:

Duplex Stainless steel Investment Castings for water solution and other fluid control industries, especially for pump impeller and valve body, pipe fittings. NDT such as Dye penetration and Magnetic particle inspection can be operated.

Winnington Casting has rich experience casting a wide variety of stainless steel, carbon steel, nickel based alloys. The most common alloys we have poured are listed below:

Stainless steel: 300 Austenitic, 400 series Hardenable, Duplex etc
Carbon steel: 10XX series, 11XX series etc
Alloy Steel
Tool steel
Nickle based alloy

Specifications:

Standards	ASTM,JIS,DIN,BS,MIL
Maximum Casting Size	500500350mm
Casting weight	10g~80kg
Wall thickness	1.5-2mm Min
Casting process type	silica sol lost wax casting,medium temperature
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 component test	Spectrometer
NDT test	Dye test, X ray test etc

Overview of Lost Wax Method

The model of the part is made of wax from an aluminum die, then the wax patterns are welded onto the runner system which is also made of wax - it forms a pattern tree or called pattern assembly. Next, the pattern tree will be dipped into ceramic slurry of sand or stucco, with drying process between each coating until the shell is thick enough to hold the weight of molten metal which will be poured later.

Then the Pattern tree with wax in it is going to a high pressure oven which melt the wax out. It forms a hollow in the shell. The shell is preheated before pouring to help fluidity of melton metal. A sand bed is always aside to hold the hot poured shell.

In the following process, the shell is broken and removed, so the castings can be seen now. The castings are then cut off from the metal tree and shot blast/polished/machined to get better tolerance and surface.

Competitive Advantage:

Precision casting based on the lost wax method is often preferred because it:

Allows greater design freedom high complexity parts
Can cast a wide variety of alloys even which melting temperature is higher than die steel
Yields lighter, stronger metal parts with superior finishes
Reduces greatly on tooling and machining costs
Possible for rapid prototype development

Applications:

Pumps, Valves, Pipe Fittings for Fluid control industry

Automotive

Marine and Oil, gas

Machinery

Power Generation

Energy

Other Mechanical part Castings