stirring shaft

The stirring shaft is a key component in mixing equipment, mainly used to drive the mixing blades to rotate, thereby achieving material mixing and stirring. The structure of the stirring shaft includes the shaft, stirring blades, and coupling, as follows:

Shaft: The shaft is the "backbone" of the mixing shaft, usually made of high-strength metal materials, capable of withstanding various forces generated during the mixing process, such as torsion, shear force, etc. The thickness and length of the shaft should be designed according to specific stirring requirements to ensure uniformity and efficiency of mixing.

There are various types of stirring shafts, commonly including straight shafts and crankshafts. The straight shaft structure is simple, easy to manufacture, and cost-effective, suitable for general stirring needs. The crankshaft is suitable for situations that require greater torque or special stirring paths.

The materials of the stirring shaft mainly include carbon steel, stainless steel, and special alloys. The specific choice of material depends on the usage environment and requirements of the mixing shaft.

carbon steel

Carbon steel is a commonly used material for stirring shafts, with high strength and good processability. Common carbon steel materials include 35, 40, 45 steel or 40Cr steel. After quenching and tempering treatment, the hardness ranges of these materials are HB190~HB250 and HB240~HB290, respectively.

stainless steel

Stainless steel stirring shafts are commonly used in environments that require corrosion resistance. Austenitic stainless steel is a commonly used material, and its sealing section requires hardening treatment, such as hard chromium plating, nitriding, welding, or ceramic spraying, to improve its hardness and corrosion resistance.

Special alloy

In certain special applications, special alloys such as nickel based alloys are also used for stirring shafts to meet higher requirements for corrosion resistance and high temperature resistance.

Material selection criteria

The material selection of the stirring shaft is mainly based on its usage environment and specific requirements:

Strength and hardness: Choose the appropriate material based on the load and working environment that the mixing shaft needs to withstand.

Corrosion resistance: The stirring shaft used in corrosive media needs to have good corrosion resistance.

Processing performance: Considering the difficulty and cost of material processing, choose materials that are easy to process and have reasonable costs.

Apply:Suitable for: pharmaceutical, chemical, cement, construction, plastics industry, agriculture industry.