Production process for rapidly achieving galvanization and polyvinyl fluoride (PVF) paint coating of tubular products

Abstract

The invention relates to a production process for rapidly achieving galvanization and polyvinyl fluoride (PVF) paint coating of tubular products, which belongs to the technical field of metal plating coating processes. The production process for rapidly achieving the galvanization and the PVF paint coating of the tubular products enables a plurality of tubes to move parallelly, achieves process integration of galvanization PVF paint coating, achieves high-speed electrogalvanization and PVF coating surface processing, and simultaneously meets organic combination of trivalent chromium galvanization passivation and trivalent chromium PVF paint with the speed as high as 20m / min. Surface quality of produced tubular products is excellent, galvanization efficiency is high, yield is improved, and production cost is reduced. Key technical problems that an existing electroplating device has poor environment protection, tightness and product operation stability, large current can generate heat during electroplating, and the like are solved. When the process is utilized, tubes do not generate electric sparks during continuous galvanization operation, the plating is free of burns and rough black phenomena. Besides, due to large current density, high galvanization efficiency and fast electroplating speed in galvanization, the production purposes of high efficiency and low cost are achieved.

Description

technical field

[0001] The invention relates to a rapid galvanizing and PVF paint production process for pipes, which belongs to the technical field of metal electroplating coating technology. Background technique

[0002] Existing pipe galvanizing and PVF coating are generally completed separately, the production process is complicated, the production cost is high, and the quality does not meet the technical requirements. Moreover, affected by the current, density and deposition of the electroplating solution during electroplating, the moving speed of the pipe cannot be too fast; on the other hand, the temperature uniformity and sealing in the oven cannot be guaranteed after the oven is too long, and it will cause cracks on the surface of the pipe during baking. The hardness of the coating is poor; the production efficiency, low production capacity, poor environmental performance, insufficient cleanliness of the production process, and the harsh environment during productio...