External galvanization device for welded pipe and galvanization method of external galvanization device

• Main Author: TIAN JIABIN
• Format: Patent
• Language: Chinese; English
• Published: 01.11.2022
• Subjects: CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION

The invention relates to the technical field of outer galvanizing of welded pipes, in particular to an outer galvanizing device for welded pipes and a galvanizing method thereof.The outer galvanizing device comprises a galvanizing pool, lifting tables are installed on the two sides of the top of a working platform through driving devices, and the driving devices are used for driving the lifting tables to drive the welded pipes to penetrate through the interior of the galvanizing pool for galvanizing; an inner cooling device is installed between the rotating cylinder and the adjacent limiting plate and used for conducting internal cooling on the welded pipe after the welded pipe penetrates through the interior of the galvanizing pool. According to the device, through the arrangement of the rotating cylinder, the rotating cylinder is pushed to be inserted into the welded pipe, and after the rotating cylinder is inserted, the rubber sleeve is driven to be inserted into the welded pipe, so that the sealing perfor