Pump Impeller Replacement

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 pump impeller manufacturer, 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

Investment Casting Tags: Pump Impeller, 304 stainless steel castings

Description

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.

Impeller type	Details	Application
Closed impeller	The construction of enclosed impellers includes additional back and front walls on both sides of vanes that enhances its strength. The efficiency of closed impellers is higher. But the more complex design leads to higher production costs than open impellers.	They are generally used in large pumps, centrifugal pumps and clear water applications.
Semi-open impeller	The semi-open impeller is very similar in its design to the closed impeller. The one major difference is the absence of the front shroud. The additional back wall, giving it more strength.	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.
Open impeller	An open face impeller doesn’t have a back or front wall, only have blade and blade reinforcement. Without walls making open impellers slightly weaker than closed or semi-closed impellers. The number of open impeller blades is 2~6.	Open impellers are generally operating at higher tip speed and easier to clean and repair. Open impellers are usually used in smaller pumps and pumps that handle suspended solids and less to clog.

Pump Impellers are made from 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.

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 replacements 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

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

Pump Impeller replacement casting process

Baoding Guokun can produce various pump impeller replacement, water pump impeller, pool pump impeller, pump impeller and shaft, pump impeller and casing, pump impeller and housing, air pump impeller, semi-open pump impeller, semi-closed pump impeller, open pump impeller, closed pump impeller, stainless steel pump impeller, aluminum pump impeller, cast iron pump impeller, centricugal pump impeller, oil pump impeller, pump impeller and other pump parts.

A High Quality China Metal Casting Factory！

Guokun Casting, of Baoding Hebei is an ISO 9001-2008 registered iron and steel foundry & supplier of high quality carbon steel, cast iron and machined castings used in power, mining, railway, agricultural, tillage, truck, automobile, pump, valve, motor, pipe fittings and gear industry.

With a monthly capacity of 10,000kgs and with more than 15 years of experience ensure the short delivery and the highest valued iron & steel casting parts.

Baoding Guokun Machinery Co., Ltd

Baoding Guokun Export and Import Trading 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

gina.guokun@gmail.com