Chemical anti-corrosion steel pipeline manufacturing technology

Abstract

The invention relates to a chemical anti-corrosion steel pipeline manufacturing technology. A plastic-lined steel pipe forming device is adopted in the technology and comprises a bottom plate, a heating sleeve, a positioning plate, a sliding plate, a clamping rod, a rotating motor, an adjusting mechanism and an adhesion mechanism. The technology for manufacturing a chemical anti-corrosion plastic-lined steel pipeline by adopting the plastic-lined steel pipe forming device comprises the following steps of S1, base pipe treatment, S2, clamping and locking of a steel pipe, S3, preheating of the steel pipe and S4, plastic lining of the steel pipe. The problems that when an existing plastic-lined steel pipe is machined, a clamp for the plastic-lined steel pipe can only clamp the steel pipe of a specific model, the applicability is low, the steel pipe is unstable in rotation, and preheating of the steel pipe is uneven are solved, and the problems that when the inner side surface of the steel pipe is subjected to plastic lining treatment, a plastic injection machine cannot adjust the synchronous moving speed along with the rotating speed of the steel pipe, so that plastic lining on the inner wall of the steel pipe is uneven, and plastic on the inner wall of the steel pipe cannot be flattened are solved.

Description

technical field [0001] The invention relates to the field of pipeline processing, in particular to a process for manufacturing chemical anticorrosion steel pipes. Background technique [0002] Plastic-lined steel pipe is a steel-lined composite pipe, which uses ordinary carbon steel pipe as the base pipe and is lined with thermoplastic plastic with excellent chemical properties. Plastic-lined steel pipes have the mechanical properties of steel pipes and the corrosion resistance of plastic pipes, slow scaling, and are not easy to grow microorganisms. They are ideal pipes for transporting media such as acid, alkali, salt, and corrosive gases. [0003] Before the plastic-lined steel pipe is formed, the steel pipe needs to be polished so that the plastic can be stably attached to the inner surface of the steel pipe. By spraying the inner wall of the steel pipe with plastic, and using a three-dimensional rotary machine to shape the plastic-lined steel pipe, The existing problems...

AI Technical Summary

Problems solved by technology

[0004] 1. The clamps for plastic-lined steel pipes can only be clamped for specific types of steel pipes, and the applicability is low, and the rotation of the steel pipes is unstable, resulting in uneven preheating of the steel pipes;

[0005] 2. When the inner surface of the steel pipe is lined with plastic, the plastic injection machine cannot follow the rotation speed of the steel pipe to adjust the synchronous speed, so that the inner wall of the steel pipe is not evenly lined with plastic, and the plastic on the inner wall of the steel pipe cannot be smoothed.

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