What is an impeller casting?
Impeller casting is a specific process that allows the creation of an impeller (or rota, as they are frequently referred to).
What material is used for impeller?
Cast iron has hitherto been the most extensively used material for the manufacture of pump impellers. Cast iron, however is notorious for its poor corrosion resistant property. Cast iron is a generic term that applies to high carbon-iron alloys containing silicon.
How is an impeller manufactured?
Traditionally, there have been several ways to manufacture impellers. In one method, molds for the vanes are placed on top of a hub. The molds are arranged as desired for the vanes, and filled with weld material. The material fills the mold, forms the vanes, and is attached to the hub.
What is a pump casting?
Pump casting is a process cycle in which pump parts are planned and projected by various metals or metal compounds. It can give more prominent strength and erosion resistance items and manage fluid substances. We can create any pump castings or cast pump parts in our foundry.
Why is cast iron used for impeller?
We use a sand cast C87500 silicon bronze impeller and discharge ball valve body and a wrought 416 martensitic stainless steel for the impeller shaft. The reason for using cast iron is because it is the best material when factoring in corrosion resistance, material strength and material cost. Cast iron corrodes.
What is water pump casing made of?
The pump casing is made of duplex stainless steel (50% ferrite + 50% austenite). As the strength of cast steel becomes higher, usually when the pressure is greater than 16Mpa, the pressure-bearing parts are mostly cast steel. The national standard code is ZG, and the most commonly used grade is ZG230-450.
What is impeller hub?
An open impeller has a hub with attached vanes and is mounted on a shaft. In pumps, the fluid enters the impeller’s eye, where vanes add energy and direct it to the nozzle discharge. A close clearance between vanes and pump volute or back plate prevent most of fluid from flowing back.
What is pump housing?
from inlet to outlet by boosting its pressures. The pump housing is casting enclosed the inner parts of a pump. This component is very important because it works to protect the inside of the pump to atmosphere to prevent leakage and retain pressure.