Manufacturing process and material selection of pump casing
First, the manufacturing process of the pump casing
Pump casing is generally manufactured by casting, forging and machining processes.
- Casting
Casting is one of the main processes for manufacturing pump casing. According to different materials and requirements, pump casing casting can be divided into sand casting, air cavity casting, pressure casting and other different casting processes. Among them, sand casting is a common process, its main process for the production of casting, melting alloy, casting, cooling, sand and other steps.
- Forging
Forging is the use of metal in the heating conditions of the force to change the shape of the characteristics of the metal material to produce changes in shape, density and mechanical properties of a process. Forging can make the uniformity and mechanical properties of the pump casing material to get a better guarantee, and at the same time reduce its internal defects and cracks and other defects.
- Processing
Machining refers to the surface of the pump casing has been manufactured for machining, cutting, drilling and other operations to achieve the machining accuracy and surface quality requirements. Machining process includes milling, turning, drilling and cutting.
Second, the pump casing material selection
Pump casing material selection directly affects its service life and performance. Commonly used pump casing materials are gray cast iron, ductile iron, copper alloy, cast steel and forged steel, etc. The selection of different materials need to consider the following factors:
- Medium properties
Pump casing materials in direct contact with the medium, the choice of materials should consider the medium's acidity and alkalinity, solid particles and other characteristics.
2.Working conditions
Different working conditions of the pump casing material requirements are different, such as working temperature, working pressure, etc..
3.Cost
Material cost is one of the important factors that restrict the selection of pump casing materials.
In short, the manufacturing process and material selection of the pump casing directly affects the performance and life of the pump, manufacturers and users should choose the appropriate process and material according to different use, and in the use of the process of maintenance and repair to extend the service life of the pump.
