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fuyangby@126.com
86 15188770013
Material selection
Basic Requirements
When selecting the materials for the pump casing before and after the slurry pump, the main considerations include the material's wear resistance, corrosion resistance, and compatibility with the slurry. Especially for handling slurries containing solid particles, the material must have sufficient strength and hardness to resist wear.
Common material types and their characteristics
Cast iron: has good processing performance and certain wear resistance, suitable for general industrial applications.
Cast steel: High strength, good wear resistance, suitable for use in high-pressure environments.
Stainless steel: It has excellent corrosion resistance and is suitable for transporting corrosive slurries.
High chromium cast iron: It has extremely high wear resistance and is particularly suitable for processing slurries containing high concentrations of solid particles.
Material selection suggestions
Select appropriate materials based on specific application scenarios, such as the concentration, temperature, and presence of corrosive substances in the slurry. For example, for slurries containing high concentrations of acidic substances, stainless steel or high chromium cast iron can be chosen to improve corrosion resistance and service life.
manufacturing process
Overview of Casting Process
The casting of slurry pumps is the most critical and fundamental step in determining pump quality. The quality of castings directly determines the quality of products. The main process of casting includes metal melting, mold manufacturing, pouring solidification, and box cleaning.
Selection criteria for raw sand
Suitable strength: Excessive or insufficient strength can affect the quality of castings.
Good breathability: reduces the occurrence of pores and extends the service life.
Good dispersibility: affects the surface quality of castings.
Casting solidification principle
The important parts should be placed at the bottom.
The important processing surface is facing downwards.
Ensure that the casting is fully filled.
Beneficial for the positioning, stability, and exhaust of sand cores.
Design characteristics of pump casing
The front and rear pump casings of slurry pumps are usually made of gray cast iron or ductile iron, vertically split and connected with bolts. The rear pump casing is connected to the bracket with bolts, and the pump outlet can be rotated and installed at eight angles. The front and rear cover plates of the impeller are equipped with back blades to reduce leakage and improve the service life and efficiency of the pump.
Application of wear-resistant materials
Overcurrent components are generally made of expensive wear-resistant materials, such as hard nickel, high chromium cast iron, ceramics, etc., to improve wear resistance and service life. This type of material relies on its own hardness and dense metallographic matrix structure to resist the wear of solid particles in the slurry.
Improvement of comprehensive performance
When designing slurry pumps, in addition to material selection, hydraulic design, structural design, hydraulic losses, and wear-resistant materials need to be considered to fully utilize equipment efficiency and extend service life.
In summary, the material selection and manufacturing process of the pump casing before and after the slurry pump have a direct impact on its performance and service life. Reasonable selection of materials and optimization of manufacturing processes can effectively improve the efficiency and reliability of slurry pumps.
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(Editor in charge: Slurry Pump https://www.fuyangpumps.com/)
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