A method and device for treating the inner surface of an elbow with plasma technology

Abstract

The invention discloses a method for treating an inner surface of an elbow pipe with a plasma technology. The method comprises the following steps: regulating a plasma gun clamping cantilever to be close to the shape of a pipeline to be processed; moving the head of a plasma gun from one end to the other end along the inner wall of the elbow pipe; rotating the plasma gun by a proper angle; reversely moving the head of the plasma gun to an original end along the inner wall of the elbow pipe; continuously rotating the plasma gun by a proper angle in an original direction; and repeating the previous movements until the entire processing is completed. The invention discloses plasma equipment applicable to the method for processing, and the equipment mainly comprises a small-size plasma gun, a gun rotation device, a telescopic supporting arm, a curvature degree adapting cantilever and a rotation platform. The method and the equipment for treating the inner surface of the elbow pipe with the plasma technology, which are disclosed by the invention, can be applied to the plasma surface treatment of the inner walls of pipelines with different bending radius arcs, and are good for improving the material property of the inner surface of the elbow pipe and prolonging the service life of the elbow pipe.

Description

technical field [0001] The invention belongs to the technical field of thermal plasma, and in particular relates to a method and equipment for treating the inner surface of an elbow with plasma technology. Background technique [0002] Thermal plasma is generated by using an external electric field or a high-frequency induction electric field to make the gas conductive and ionized. Its main components are electrons, ions, neutral particles and photons. Thermal plasma technology mainly uses the high temperature and high speed plasma jet after being compressed to process various materials. Thermal plasma is much higher than the gas temperature that can be achieved by common combustion systems, and its energy density is second only to laser and electron beams. Thermal plasma technology has the advantages of simple equipment, low equipment cost, strong continuous production capacity, and high safety. It is more suitable for large-scale industrial production. [0003] Plasma su...

AI Technical Summary

Problems solved by technology

Especially the inner surface of the elbow bears a large impact load, and its wear is more serious

However, there are few treatment processes for the inner surface of the elbow, which makes the elbow a vulnerable part in the pipeline, which has a short service time and is inconvenient to replace, which has an adverse effect on industrial production

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