Description/ Specification of CED Coating services
The CED or Cathodic Electro Deposit process is an Electro-chemical process for applying protective coating like paints or primer on metal surfaces. The process finds extensive application in automobile industry for coating of body components. Besides it is also used for electrical machinery, appliances, metal furniture etc. The process is based on the principle that oppositely charged particles get attracted to each other. A bath of the material with colloidal suspension is used as the electrolyte and in it the metal component to be coated is used as cathode or negatively charge electrode. A set of positive electrodes completes the circuit. A DC current is passed through it which charge the colloidal particles(polymer/ceramic/metal) particles with positive charge and they get deposited on the negatively charge fabricated metal component acting as cathode. After completion of deposition the paint which has not been deposited is rinsed. An ultrafiltration system may be employed for recovery of most of the rinsed paint and recycling the same to the bath, thereby improving process efficiency. Finally curing is done by applying heat to the metal component in an oven. This cross links and strongly bind the polymer. It also removes the porosity in the coating by removing the gas particles produced in the process and trapped below the coating. The process has several benefits like lower cost, less time taken, ability to form coating in both interior and exterior side, ability to coat irregular shapes, attractive surface finish, protection from corrosion and hence long life, uniformity of coating thickness etc. This process is also environment friendly, and can be fully automated with PLC control thereby reducing cost and improving efficiency. However, as the deposition progresses the resistance of the plating increases. Also heating of the paint increase it’s electrical resistance. These reasons cause slowdown of the process. The control of paint thickness can be achieved through control of deposition time and applied voltage, This page lists the catalogues of businesses providing CED coating Service.
CED Coating services
The CED or Cathodic Electro Deposit process is an Electro-chemical process for applying protective coating like paints or primer on metal surfaces. The process finds extensive application in automobile industry for coating of body components. Besides it is also used for electrical machinery, appliances, metal furniture etc. The process is based on the principle that oppositely charged particles get attracted to each other. A bath of the material with colloidal suspension is used as the electrolyte and in it the metal component to be coated is used as cathode or negatively charge electrode. A set of positive electrodes completes the circuit. A DC current is passed through it which charge the colloidal particles(polymer/ceramic/metal) particles with positive charge and they get deposited on the negatively charge fabricated metal component acting as cathode. After completion of deposition the paint which has not been deposited is rinsed. An ultrafiltration system may be employed for recovery of most of the rinsed paint and recycling the same to the bath, thereby improving process efficiency. Finally curing is done by applying heat to the metal component in an oven. This cross links and strongly bind the polymer. It also removes the porosity in the coating by removing the gas particles produced in the process and trapped below the coating. The process has several benefits like lower cost, less time taken, ability to form coating in both interior and exterior side, ability to coat irregular shapes, attractive surface finish, protection from corrosion and hence long life, uniformity of coating thickness etc. This process is also environment friendly, and can be fully automated with PLC control thereby reducing cost and improving efficiency. However, as the deposition progresses the resistance of the plating increases. Also heating of the paint increase it’s electrical resistance. These reasons cause slowdown of the process. The control of paint thickness can be achieved through control of deposition time and applied voltage, This page lists the catalogues of businesses providing CED coating Service.
