Tube inner wall surfacing equipment and its control method

Abstract

The invention provides a build up welding device for the inner wall of a pipe type piece. The build up welding device comprises a pipe fitting clamping unit, a pipe type piece build up welding unit, a weld joint quality detection unit, a walking unit and a control unit. The pipe fitting clamping unit is used for fixing the pipe type piece and can make the pipe type piece be able to do rotation movement around the axis of the pipe type piece. The pipe type piece build up welding unit is used for conducting reliable build up welding on the inner wall of the pipe type piece. The weld joint quality detection unit is used for conducting weld joint quality detection on the inner wall of the pipe type piece where build up welding is completed. The pipe type piece build up welding unit and the weld joint quality detection unit are both arranged on a supporting frame. The supporting frame is rotationally installed on the walking unit. The walking unit is used for getting close to or getting away from the pipe type piece. The control unit is used for controlling the operation speed of the walking unit and the operation speed of the pipe type piece clamping unit so that the pipe type piece build up welding unit installed on the walking unit can conduct reliable build up welding on the inner wall of the pipe type piece. The device conducts automatic welding on a wear-resistant material on the inner wall of the pipe type piece and can conduct quality detection on the pipe type piece where welding is completed, and the work efficiency is improved.

Description

technical field [0001] The invention relates to the field of surfacing welding equipment, in particular to a surfacing welding equipment for the inner wall of a tubular part and a control method thereof. Background technique [0002] In electric power, metallurgy, mining, building materials and other industries, when pipelines are used to transport ash, coal powder, mineral powder, concrete slurry and other materials, the inner wall of the pipeline not only bears severe wear, but sometimes also bears greater pressure. Under such working conditions, ordinary steel pipes are extremely easy to wear and tear, have a short service life, and require a longer steel pipe size. [0003] Usually, in order to save costs, the steel pipe is usually stacked with two straight plates, wherein the outer plate is a stainless steel plate, and the inner plate is a wear-resistant plate. After welding, it is rotated and rolled to form a cylindrical shape. The coiled cylinder is welded to make it...

AI Technical Summary

Problems solved by technology

[0002] In electric power, metallurgy, mining, building materials and other industries, when pipelines are used to transport ash, coal powder, mineral powder, concrete slurry and other materials, the inner wall of the pipeline not only bears severe wear, but sometimes also bears greater pressure. Under such working conditions, ordinary steel pipes are prone to wear and tear, and their service life is short, and the required steel pipe size is longer

[0003] Usually, in order to save costs, the steel pipe is usually stacked with two straight plates, wherein the outer plate is a stainless steel plate, and the inner plate is a wear-resistant plate. After welding, it is rotated and rolled to form a cylindrical shape. The coiled cylinder is welded to make it a seamless steel pipe, but the thickness of the seamless steel pipe welded to the steel plate and the inner diameter of the seamless steel pipe are limited. When the thickness of the seamless steel pipe is large, the inner diameter of the seamless steel pipe When it is small, the seamless steel pipe cannot be coiled and cannot meet the requirements for use

[0004] In order to adapt to the above working conditions, a practical and effective method is to surfacing wear-resistant layers on the inner wall of ordinary carbon steel pipes, thereby producing a high-wear-resistant composite pipeline, which has a wide range of applications and a large demand. If manual welding is used, not only the production efficiency is low, the working conditions are poor, but also the quality of surfacing welding cannot be guaranteed. When the diameter of the pipe is relatively small, the welder cannot enter the pipe for surfacing operation, and when the length of the pipe is long, the welder cannot reach The required welding space causes the length of the delivery pipeline to fail to meet the usage requirements

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