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Structural material matching and application conditions of polymer melt gear pump

Polymer melt gear pumps can be divided into standard type, high wear-resistant type, corrosion-resistant type, and high corrosion-resistant type according to application conditions. Their structure consists of pump casing, front and rear cover plates, gears, bearings, and shaft seals.

For standard polymer melt gear pumps, they have good wear resistance, high toughness, high cost-effectiveness, and are suitable for most low abrasion working conditions. The material of the pump casing is nitride steel, the gear material is nitride steel, the bearing material is tool steel, and the cover plate material is nitride steel.

For high wear-resistant polymer melt gear pumps, they have the characteristics of high strength and high wear resistance, and are suitable for abrasive wear conditions. The material of the pump casing is nitride steel, the gear material is high-speed steel, the bearing material is high-speed steel, and the cover plate material is nitride steel.

For corrosion-resistant melt gear pumps, they have the characteristics of wear resistance and corrosion resistance, and are suitable for low corrosive working conditions. The pump casing material is stainless steel, the gear material is nitride steel, the bearing material is tool steel, and the cover plate material is stainless steel.

For high corrosion resistant melt gear pumps, they have high corrosion resistance characteristics and are suitable for high corrosive working conditions. The pump casing material is stainless steel, the gear material is stainless tool steel, the bearing material is stainless tool steel, and the cover plate material is stainless steel.

The polymer extrusion system uses a polymer melt pump, also known as a melt metering pump or extrusion pump, which can be used in various extrusion industries such as sheet, plate, pipe, film, granulation, drawing, cable, co extrusion, mixing, precision extrusion, etc.

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