Film-coated barrel and preparation method thereof

Abstract

The invention relates to a film-coated barrel and a preparation method thereof. The barrel comprises a barrel body formed by winding and welding a metal plate, end covers used for sealing the two ends of the barrel body, film-coated layers attached to the inner and outer surfaces of the barrel body and the end covers and film repairing layers attached to the inner and outer surfaces of the welding position of the barrel body. In the preparation process, the method mainly comprises the steps that the film-coated layers are attached to the front end face and the back end face of the metal plate, cutting is conducted, edge milling or edge grinding is conducted on the two ends, the barrel body is formed through welding, film repairing is conducted on welding seams, and edge curling and fixing are conducted on the end covers. Surface treatment of the barrel body is achieved in the mode that the inner surface and the outer surface of the barrel body are coated with films, and the problems that environmental pollution generated by spraying seriously exceeds the standard and the input cost is too high are solved. In the film covering process, the barrel body is provided with the welding seams, so that surface film covering treatment at the welding seams is achieved in a film repairing mode, and the using effect and the service life of the barrel body are effectively guaranteed.

Description

technical field [0001] The invention relates to the technical field of film-coated barrels, in particular to a film-coated barrel and a preparation method thereof. Background technique [0002] In the metal barrel industry, the barrel body is generally made of thin steel plates. In order to ensure that the surface of the steel plate is not corroded, it is usually sprayed on the inner and outer surfaces of the barrel. The steel barrel needs to be cleaned, phosphated, and dried before spraying; According to the amount of 7 steel barrels sprayed with 1Kg of paint, each steel barrel is sprayed with about 142g of paint, of which about 20% are inner-coated epoxy phenolic inner-coated barrels. During the heating and baking process, 60% of the ring Oxyphenol aldehyde will volatilize, which will have a serious impact on the environment, and the emissions will seriously exceed the standard; at the same time, the cost of paint spraying is too high, generally including paint fees, elect...

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Problems solved by technology

[0003] The object of the present invention is to provide a film-coated barrel and its preparation method to solve the problems of poor film-coating effect and low service life at the welding position of the barrel prepared by film-coating technology in the prior art

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