Corrosion prevention production line for welding epoxy coating in welded steel tube and corrosion prevention process

Abstract

The invention discloses a corrosion prevention production line for welding an epoxy coating in a welded steel tube and a corrosion prevention process. The production line comprises a flame preheatingfurnace, an inner wall shot blasting derusting machine, an in-pipe purging device, an intermediate-frequency heating furnace, a temperature detection and warning device, an epoxy powder coating and dust collection device and a curing slow cooling furnace which are arranged in sequence. The corrosion prevention process comprises the steps of preheating, shot blasting, purging, heating, detection, powder spraying and recycling, curing cooling and finished product warehouse storage on welded steel tube. Through the corrosion prevention production line for welding an epoxy coating in a welded steel tube and the corrosion prevention process, the problem that the product is instable during the production process for welding the epoxy coating in the steel tube through an existing production lineand process is solved, and the quality of the epoxy coating welded to the interior of the welded steel pipe is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of welded steel pipe manufacturing, and in particular relates to an anti-corrosion production line and anti-corrosion process for welding epoxy coatings inside welded steel pipes technical background [0002] The existing welded steel pipe inner fusion epoxy coating production line is relatively simple, and the working environment in the workshop is harsh. Although the final inspection coating thickness and other indicators meet the requirements, the depth of the anchor pattern, cleanliness level, and epoxy coating in the process of production are still relatively poor. The temperature and solidification slow cooling time cannot be guaranteed, which in turn affects the service life of the steel pipe. Therefore, the existing process must be improved to ensure the coating quality of steel pipes and prolong the service life of steel pipes by adding processes such as flame preheating, internal purging, epoxy pow...

AI Technical Summary

Problems solved by technology

[0002] The existing welded steel pipe inner fusion epoxy coating production line is relatively simple, and the working environment in the workshop is harsh. Although the final inspection coating thickness and other indicators meet the requirements, the depth of the anchor pattern, cleanliness level, and epoxy coating in the process of production are still relatively poor. The temperature and solidification and slow cooling time cannot be guaranteed, which will affect the service life of the steel pipe

Images