Cleaning is a civilized labor. "Cleaning", a kind of subconscious or unconscious labor, has been accompanied by the development of human beings from the evolution of ancient humans to the life and production practice of modern people. With the progress of society, the development of productivity, and the improvement of human civilization consciousness, the development of "cleaning" has become a practical technology with a wide range and rich content. In addition to the continuous progress of civilian cleaning technology that people consider from the aspects of health, hygiene, civilization, and living environment, the development of cleaning methods and technologies in industrial production is even more colorful. This book only expands from the "ultrasonic cleaning" in industrial cleaning, explaining some concepts and meanings of industrial cleaning.

The Concept of Industrial Cleaning

In the process of components manufacturing of industrial products, during the assembly of products, in the process of storage, transportation and use of industrial equipment, in the process of continuous operation of industrial systems, various liquid or solid contaminants will stick to or cover them. The so called industrial cleaning means to remove the contaminants that the surface (or inner surface) of industrial parts, components, products, systems and equipment should not have through physical, chemical or biological ways, and clean them as new as possible in order to restore devices to initial good condition.

Generally speaking, to clean an industrial product, the cleaning system should include four elements: industrial products or parts (cleaning objects), adhering pollutants, cleaning media and cleaning force. The entire cleaning process can be expressed in a simple formula:

Industrial products here refer to parts being manufactured and assembled; contaminants refer to oil, solid particles, etc. Cleaning refers to ultrasonic power, chemical molecular force, other mechanical forces; Cleaning medium refers to water base, activator, organic solvent, etc.

The Significance of Industrial Cleaning

With the advancement of science and technology and the improvement of productivity, people increasingly realize that industrial cleaning is an indispensable and important process in the production process. The significance of industrial cleaning lies in the following aspects:

(1) It is beneficial to improve the quality and performance of products.

Industrial cleaning is beneficial to improve the quality and performance of products. Removal of dirt on the surface of raw materials can ensure the accuracy and size of parts in manufacturing; in component assembly, it can improve the quality of products. For example, in the assembly of cameras and copiers, it is conducive to shaft hole coordination and gear meshing. For some products, cleaning is to meet the needs of the next process, such as electroplating pretreatment, spraying pretreatment, vacuum coating pretreatment, metal antirust passivation pretreatment, etc.

(2) It is conducive to extend the service life of industrial equipment

Cleaning is conducive to extend the service life of industrial equipment and maintenance. For example, in maintenance of power plants and chemical plants, the sensitivity and reliability of all kinds of control spool and regulator can be restored quickly through ultrasonic cleaning. Another example is the cleaning of cylinders, piston rings, fuel injectors, and various sports bearings of automobiles and diesel engines, which can greatly improve assembly quality, reduce wear and extend their service life.

(3) It is conducive to low-carbon economy and safe production

Industrial cleaning is conducive to low-carbon economy and safe production. For example, various pipeline installations in power plants, due to fouling, reduce the flow area of the pipeline, increase the flow resistance, and increase the energy consumption and material consumption. Another example is in chemical plants. The pneumatic and hydraulic spool of various automatic control systems and the nozzle of the regulator will be blocked by dirt, resulting in control failure. In continuous operation, the pressure of the pipeline or reaction kettle increases, which may cause explosions and other production safety accidents. Industrial cleaning and descaling can restore the production efficiency of equipment.

Therefore, industrial cleaning is an indispensable important process in the production process, and industrial cleaning has made an undoubted contribution to industrial production.