The "high-chromium alloy flow components" of 50ZJ-A33 is a component system, mainly consisting of:
High-chromium alloy impeller: It adopts a closed impeller design, usually with 3 to 6 twisted blades, and has back blades to reduce leakage and balance axial force. The impeller is connected to the pump shaft by threads, facilitating disassembly and assembly.
High-chromium alloy casing (bladder): As the inner shell of the pump, it collects and guides the slurry, converting kinetic energy into pressure energy.
High-chromium alloy front and rear guard plates: Located at the inlet and back of the impeller respectively, they cooperate with the impeller to form an efficient flow channel and protect the pump body.
High-chromium alloy pump cover / front pump housing: Together with the casing, they form a complete flow passage.
Core material and process: These components are generally made of high-chromium wear-resistant alloy cast iron (such as Cr26, Cr28, etc.), through precise casting and multiple heat treatment (annealing, normalizing, tempering) processes, ensuring that the material has a high hardness (HRC above 58) and good toughness, to resist harsh abrasive conditions.

Core feature

Extremely durable, long-lasting: The high hardness carbides in the high chromium alloy make it far more wear-resistant than ordinary materials. It is particularly suitable for transporting media containing hard particles such as sand, gravel, and slag, significantly reducing the frequency of replacement and maintenance costs.
Efficient energy-saving design: Based on the optimized hydraulic model of modern fluid mechanics, the flow channel design is reasonable, reducing vortex and impact losses. The pump efficiency is high, helping to reduce operating energy consumption.
Double pump casing structure, convenient maintenance: The outer pump casing (usually made of ductile iron QT500-7) provides structural strength, while the inner liner (i.e., the high chromium alloy flow passage components) is of a replaceable design. When the inner liner wears out, there is no need to replace the entire pump body, greatly saving maintenance time and costs. Stable and reliable operation: The overall structure is compact, and it is supported by heavy-duty bearings, ensuring smooth operation with low vibration and noise.

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Application fields

Electric power industry
Water removal and slag removal systems for thermal power plants, slurry for desulfurization.
The slag and ash are highly abrasive, and high-chromium alloy components provide long-term protection.
Metallurgical mining
Transportation of raw ore, concentrate, and tailings slurries in beneficiation plants.
The slurry concentration is high (up to 60%), and the particles are hard, so high wear resistance is crucial.
Coal industry
Coal slurry, heavy medium suspension, and coal water slurry in coal washing plants.
The medium may contain abrasive particles such as gangue, so the pump needs to be wear-resistant and not prone to clogging.
Building materials and chemical industry
Slurry in cement plants and corrosive slurries containing solid particles in chemical plants.
It needs to balance wear and possible chemical corrosion, and the high-chromium alloy has certain corrosion resistance.