Electric submersible mixers play a central role in a variety of industrial processes, from wastewater treatment to chemical processing. The materials used to manufacture these mixers have a decisive influence on their efficiency, durability, and ability to cope with harsh operating environments.

Cast Iron

Cast iron is a common material for submersible electric mixers, especially for parts such as the housing and impeller. Its advantages include:

Strength and durability: Cast iron has a high strength and good weight ratio, which can withstand the mechanical stress of the mixer during operation and ensure long service life.

Cost-effectiveness: Cast iron is cheaper to manufacture than other materials, which helps to reduce production costs.

Vibration absorption: Cast iron naturally absorbs vibrations, reducing operating noise and wear, which is particularly important for reducing vibration.

Machinability: Cast iron is easy to machine and can accurately manufacture complex shapes and parts to meet complex design requirements.

However, cast iron may not be suitable for highly corrosive environments, in which case more durable materials or protective coatings are required to extend service life.

Stainless Steel

Stainless steel is an important material for the manufacture of electric submersible mixers, especially for parts that are in direct contact with the mixed liquid. AISI 316 and AISI 304 are two commonly used stainless steel grades:

AISI 316 stainless steel is known for its excellent corrosion resistance, especially for aggressive chemicals such as chlorides. It is often used in highly corrosive environments, such as agitator shafts and impellers in chemical processing or marine applications.

Although AISI 304 stainless steel is slightly less corrosion resistant than 316, it still has good resistance to a variety of corrosive media and is lower in cost. It is suitable for less corrosive environments, such as food processing and general industrial applications.

The advantages of stainless steel in submersible mixers include:

Corrosion resistance, which can protect the integrity of the mixer in harsh environments and prevent contamination of the mixed liquid.

High strength and durability, able to withstand large mechanical stress and fatigue.

Hygienic, with a smooth surface that is easy to clean and disinfect, suitable for the food and beverage industry.

High temperature resistance, suitable for applications with a wide temperature range.

The choice of AISI 316 or AISI 304 (or other grades) should take into account the corrosiveness of the media, the operating temperature and the budget. Under extreme conditions, duplex stainless steels may be used for higher strength and corrosion resistance.

Plastics

Plastic materials also play a key role in the manufacture of electric submersible mixers, especially the following:

Polyester: Due to its good chemical resistance, dimensional stability and mechanical strength, it is often used in the casing or impeller part, suitable for applications requiring corrosion resistance and lightweight.

PEEK: As a high-performance material, PEEK has excellent chemical resistance, high temperature stability and low moisture absorption. It is suitable for agitator parts under extreme conditions and provides excellent wear resistance.

PTFE: Known for its non-stick and chemical inertness, it is often used in seals, gaskets or as a coating to enhance chemical resistance and reduce friction. Brand names such as Teflon are well known.

Special Coatings

In order to improve the efficiency and life of electric submersible mixers, special coatings are generally applied to key components. Among them, Ceram C0 ceramic coating is widely praised for its excellent performance. Its main advantages are:

Enhanced wear resistance: The hard and smooth surface layer formed can effectively resist the wear of abrasives in the mixed liquid, which is particularly helpful for parts that are often in contact with the fluid, such as impellers.

Enhanced corrosion protection: Provides an additional chemical protection barrier for the underlying material, especially suitable for applications containing corrosive media.

Improve working efficiency: Its smooth surface helps to reduce fluid turbulence, optimize the flow path, and may improve the overall working efficiency of the agitator.

Extended service life: By effectively preventing wear and corrosion, the service life of agitator components is significantly extended, reducing maintenance frequency and downtime.

In addition to Ceram C0, there are several other special coatings that are widely used in electric submersible mixers:

Epoxy coating: Often used to protect cast iron parts in mildly corrosive environments due to its good chemical resistance.

Fluoropolymer coatings: Similar to PTFE, these coatings offer excellent chemical resistance and non-stick properties.

Hard chrome plating: commonly used on parts such as shafts to enhance surface hardness and wear resistance.

The correct selection and application of these coatings are critical aspects of the design and manufacture of electric submersible mixers, and can significantly improve their performance, durability, and ability to adapt to a variety of complex environments.

Electric Submersible Mixer Manufacturers

When choosing an electric submersible mixer, it is critical to select the right manufacturer, and Tianjin Kairun is a leader in this field. With deep expertise in pump and mixer technology, the company offers a range of high-quality electric submersible mixers designed to suit a variety of industrial needs. Tianjin Kairun understands that different applications require specific mixer configurations, so it provides customization services to ensure that customers receive a mixer that fits their unique needs. Its experienced team of engineers works closely with customers to design and manufacture custom submersible mixers that fully meet application expectations. Tianjin Kairun provides customization services to ensure that customers receive electric submersible mixers that fit their needs, helping to improve efficiency, reduce operating costs and extend equipment life. Customers who are interested in exploring custom submersible mixer options or seeking technical support are welcome to contact Tianjin Kairun at catherine@kairunpump.com for quotes, technical information and to discuss customization requirements.

References

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2. Gülich, J. F. (2010). Centrifugal Pumps. Springer Berlin Heidelberg.

3. Karassik, I. J., Messina, J. P., Cooper, P., & Heald, C. C. (2008). Pump Handbook. McGraw-Hill Education.

4. Totten, G. E., Funatani, K., & Xie, L. (2004). Handbook of Metallurgical Process Design. CRC Press.

5. Davis, J. R. (1994). Stainless Steels. ASM International.

6. Schweitzer, P. A. (2006). Corrosion of Polymers and Elastomers. CRC Press.