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Study on Mechanism of High Speed Spinning Bell Electrostatic Spray

Author: ZhangFuShun
Tutor: ZhangDaWei
School: Tianjin University
Course: Mechanical Manufacturing and Automation
Keywords: High - speed rotating cup Electrostatic spraying Painting Atomization Mechanism
CLC: TG174.44
Type: Master's thesis
Year: 2004
Downloads: 228
Quote: 1
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Abstract


Liquid atomization phenomena abound in nature and engineering , and the atomization mechanism is the subject of an important theoretical significance and engineering background . This article is closely combined with the technical problems of domestic car cover spraying process , the analysis and research of the spinning cup high-speed electrostatic spraying atomization mechanism , and atomization conditions influencing factors were analyzed . According fluid continuity and the equations of motion , research the movement of the paint in the spinning cup , to establish the mathematical model of the the spinning cup high-speed electrostatic spraying paint movement within the spinning cup . The spinning cup high-speed electrostatic spraying to contain centrifugal force atomization and electrostatic atomization and paint atomization mechanism ( centrifugal atomization , electrostatic atomization ) and its influencing factors analysis and research , the spinning cup speed n and the electric field strength of the electrostatic field ( voltage pole pitch ) on the atomization of the impact of the largest , followed by spinning cup structure parameters : spinning cup diameter and density of the cone angle and coatings , paint viscosity and flow of fogging on relatively small . Tremendous centrifugal force , established a the spinning cup high-speed electrostatic spraying paint pigment component in the film , the uneven distribution of the mathematical model , even with the separation of liquid paint . The pigment component and the liquid paint two phase density difference is to make the pigment component uneven distribution, even separation of the necessary conditions , i.e. , the internal driving force , the force field is a pigment component is separated the outer driving force , the diameter of the coating of the pigment particles viscosity , flow , spinning cup geometric parameters ( diameter , cone angle ) are larger . Atomization theory , simulation , simulation results verify the rationality and correctness of the theory and engineering practice . The above analysis and research, not only in the theoretical aspects of the the spinning cup high-speed electrostatic spray atomization mechanism , affecting factors analysis of the system to provide a theoretical basis for the optimal set of controllable parameters in the production process and scientific guidance to address the production in practical problems , and in all areas of the research and manufacture of modern painting equipment , paint production and even the chemical , pharmaceutical , spray drying , have engineering significance .

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Metallurgy and Heat Treatment > Metal corrosion protection,metal surface treatment > Corrosion control and protection > Metal surface protection technology > Metal complex layer of protection
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