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304 Pump Impeller

Home Pump Castings 304 Pump Impeller

304 Pump Impeller

  • Product name: semi-closed pump impeller or semi-open impeller
  • Material: ASTM SAE 304 stainless steel
  • Process: Lost wax investment casting
  • Application: The semi-open impellers or semi-closed impellers are usually used with liquids or mixed solid-liquid products. Mainly, they are well suited for medium sized pumps.

Baoding Guokun, a 25 years of casting experience, can produce various pump impellers as per your drawings or design. Cast steel, low-carbon steel, mild steel, stainless steel, cast iron, cast bronze industrial pump impeller could be casted by Baoding Guokun. If any similar need, please contact gina@guokuncasting.com 

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Description

304 pump semi-open impeller or CF8 pump semi-closed impeller

The pump impeller is the rotating component in the pump that directly transfers the energy from the motor into the fluid being pumped. Pump impellers are classified as one of three types: Open impeller, semi-open impeller, or closed impeller. Their classification is based on whether they have a protective shroud or not.

Impellers are casted in a variety of materials, including stainless steel, cast iron, bronze, aluminum, austenitic stainless steel, titanium, etc. When you choose the suitable material for pump impeller, you should think about the following several factors, strength, fluid compatibility, abrasion resistance, environmental conditions, type of liquid being pumped, casting and machining properties, etc.

Baoding Guokun can offer you the most suitable material as per your pump’s requirements. And with 25 years casting experience, we can produce the custom pump impellers with the suitable cast metal and casting process. The most common material for industrial pump impeller is 300 series stainless steel, for example, SAE 304 stainless steel, SAE 316 stainless steel, ASTM A351 CF8, ASTM A351 CF8M, etc

Product name Material Casting process
Pump impeller 300 series Stainless steel, 400 series stainless steel, low-carbon steel, alloy steel, mild steel, cast steel Investment casting ( lost wax casting)
Cast iron, ductile iron, grey iron Sand casting, lost foam casting
Bronze, Nickel-aluminum bronze, brass, aluminum, etc. Sand casting or gravity casting for aluminum pump impeller

What’s the best material for a pump impeller?

Stainless steel is the most common pump impellers material because of its anti-corrosive, anti-heat and anti-contamination properties. The Baoding Guokun stainless steel casting pump impellers are made as investment casting process, or lost-wax casting process that results in a significantly improved surface finish & casting tolerance and impeller quality than other sand cast bronze pump impellers.

 

What’s the difference between 304 and 316 stainless steel?

The main difference between 304 and 316 stainless steel is the addition of molybdenum in 316, which gives it superior corrosion resistance. Please the above chart, you can judge that the stainless steel 316 and 316L are with 2~3% Mo, which improves the alloy’s resistance to acids, alkalis, and chloride pitting. The more corrosion resistance of 316 allows it to be used in highly acidic environments that other steels can’t tolerate without incurring damage. And ASTM 316 can be used in sea and marine applications because 316 can withstand exposure to salt and chlorides without breaking down.

 

Baoding Guokun Investment casting stainless steel pump impeller’s steps:

No. Steps Details
1 Patterns Makings Creating a wax mold of the desired stainless steel pump impellers, and then adding sprues to the wax model to create a tree-like structure.
2 Shell Building Coating the wax pattern with a layer of fire-resistant paint, and then to be sprinkled with sand, so after a period of hardening, the surface will form a layer of fire-resistant thin shell.

 
3 Dewaxing Removing the wax, the shell is placed into an oven, melting the wax so that it can run out of the shell.
4 Pouring Pouring the molten stainless steel into the shell, and waiting for solidification under room temperature.
5 Post treatment After cooling, knock the shell and cut the sprue gate by grinding machinery to achieve net shape impeller castings. Then shot blasting to move mill scales to assure the smooth casting surface.
6 Machining CNC Machining & Balancing

Baoding Guokun Machinery Co., Ltd.

Office Add: 777# Chaoyang South Street, Baoding City, Hebei, 071000, China

Factory Address: Wangdu County, Baoding City, Hebei, 071000, China

Website: www.metalcastingfactory.com

Tel: 86-312-5951319 Fax: 86-312-5951296

Phone: 86-181 3278 9710 (WhatsApp & WeChat)

Email: gina@guokuncasting.com or gina.guokun@gmail.com

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