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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.
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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 manufactured from a variety of materials, including stainless steel, cast iron, bronze, aluminum, austenitic stainless steel, titanium, and others. When selecting the appropriate pump impeller material, several factors should be considered: strength, fluid compatibility, wear resistance, environmental conditions, the type of liquid being pumped, and casting and machining properties.
Zen Young can provide the most suitable material for your pump requirements. We are capable of producing custom pump impellers using the appropriate casting metals and processes.
With strict quality control system, and top chemical and metallurgical laboratory facilities, like spectrometer, ultrasonic detector, universal material tester, metallographic analyzer and CMM, we can ensure the exact material quality and standard as well as mechanical properties.
Cast iron pump impellers are typically used in small, low-cost pumps for water supply, drainage, irrigation, or industrial applications. Cast iron impellers offer good castability, machinability, and vibration damping properties.
Compared to bronze impellers or stainless steel pump impellers, gray cast iron impellers exhibit inferior resistance to corrosion, erosion, and cavitation. This is because cast iron is prone to rusting in water environments, and cast components may also experience crevice corrosion. However, cast iron impellers are robust, durable, and cost-effective, making them well-suited for handling abrasive fluids in applications such as mining, construction, and agriculture.
| Product | 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 |
| Gray iron pump impellers | ASTM A48 Standard Specification for Gray Iron Castings, for example, ASTM A48 Class 30, ASTM A48M class 35, ASTM A48 class 40, etc. | More brittle but has better vibration damping and is generally cheaper than ductile iron. |
| Ductile iron pump impellers | ASTM A536 Standard Specification for Ductile Iron Castings. ASTM A536 grade 65-45-12, ASTM A536 Grade 80-55-06, ASTM Gade 60-40-18, etc | Offers greater strength and ductility, making it suitable for applications with higher impact loads. |
| 1. Water supply and drainage | Cast iron impellers are used in pumps that transfer clean water and similar liquids in factories, mines, cities, and for fire fighting |
| 2. Irrigation | Cast iron impellers are used in irrigation pumps. |
| 3. Industrial applications | Cast iron impellers are used in industrial applications, such as in the food and beverage, pharmaceutical, and cosmetics production industries. |
The sand casting foundry occupis over 130.000 m2, facilitated with a resin-sand processing line, a disa line and a 5 tons electric furnace, CNC lathes, CNC milling machines, CNC boring machines, CNC machining centers, heavy- duty lathes, vertical lathes, vertical drilling machines, etc.The foundry is able to cast parts weight from 0.1kgs up to 10,000kgs, to machine size up to 1600mm( rotating diameter). Annual output exceeds 10000 tons.
Heat Treatment:
Quenched and Tempered
Machining :
CNC Vertical lathe+Boring Machine
Procedures:
1. Incoming material inspection 2.Charge mixture 3.Moulding 4.Melting&Pouring 5.Shot blasting&grinding 6.Painting 7.Visual test 8.Machining 9.Process inspection 10.Cleaning 11.Leakage test 12.FQC 13.Packing&stocking 14.Pre-shipment inspection 15.Delivery
Tolerance:
+/-0.05mm（ or according to the customers drawing indicated）
Inspection:
MT/UT/RT/100% Visual+100%gauge/CMM
Standard:
ASTM. AISI. DIN. BS. JIS. NF. AS.
Certification:
ISO9001/TS16949/ISO14001
Supply Ability:
1000 Ton/Tons per Month
Packing:
Seaworthy Wooden Cases
Port:
TIANJIN XIN'GANG
Drawing:
Provide by customer, or design according as the sample,in the format of Pro/E, Auto-CAD, SOLIDWORK, CAXA, UG, CAD, CAM, CAE, STP, IGES, etc.
Mould :
Design and produced by ourselves according to provided drawings
Please send us your drawing together with the weight,material and quantity requireed.
Yes, we can scan your sample and make the drawing for your confirmation.
PDF, IGS, DWG, STEP, etc.
1kg~2000kg
1pc
Sample time: 6-8 weeks including tooling construction. Order time: 4-6 weeks after sample approval, it can be flexible due to complexity or quantity.
L/C，D/P， T/T are accepted.
Tooling:100% in advance, Order:50% deposit, 50% before shipment.
We always cast make and cast with aluminum patterns.
Keywords: Lost Foam Casting Pump Impeller, Bronze Impellers,Stainless Steel Impeller
