A square tube shot blasting protective cover and a method using the same

By designing a lightweight yet robust protective cover for shot blasting of square tubes, the problems of high labor and material costs and inconvenient disassembly and assembly in existing technologies have been solved. This design prevents steel shot from entering the square tube cavity and allows for quick disassembly, facilitating subsequent cutting and ensuring continuous operation of the production line.

CN122125629APending Publication Date: 2026-06-02DALIAN COSCO KHI SHIP ENG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DALIAN COSCO KHI SHIP ENG
Filing Date
2026-03-26
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing shot blasting protective covers for square tubes suffer from high labor and material costs during recycling, insufficient robustness due to repeated disassembly and assembly, and reduced production efficiency. Furthermore, existing technologies are not suitable for mass production of square tubes.

Method used

Design a square tube shot blasting protective cover, which adopts a composite structure of adhesive layer, sealing layer and protective layer. The adhesive layer is U-shaped, the sealing layer is polytetrafluoroethylene plate, and the protective layer is metal plate. The structure is lightweight and strong, and is equipped with a handle for the sealing layer for easy disassembly.

Benefits of technology

This technology prevents steel shot from entering the square tube cavity, avoids equipment damage, allows for quick disassembly, facilitates wall thickness measurement, reduces labor costs, ensures smooth production line operation, and minimizes equipment wear and energy waste.

✦ Generated by Eureka AI based on patent content.

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    Figure CN122125629A_ABST
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Abstract

A protective cover for shot blasting of square tubes and a method for using the protective cover belong to the field of shipbuilding technology. The disposable protective cover uses polytetrafluoroethylene (PTFE) as the sealing layer and aluminum sheet as the protective layer. The PTFE and aluminum sheet are fixedly bonded using a high-temperature hot-pressing process. In use, the protective cover is pasted onto both ends of the square tube, which is then fed into a shot blasting machine for shot blasting. Finally, the protective cover is removed. This protective cover is lightweight, easy to handle and store; it can withstand shot blasting impacts, is easy to dismantle, and does not affect subsequent cutting operations; it is firmly attached and does not easily fall off during shot blasting, and even if it does fall off, it will not cause fire or damage to equipment; installation and disassembly are convenient and quick, saving labor costs.
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