Manufacturing method of large-diameter anti-corrosion plastic-coated steel tube

Abstract

The invention relates to a manufacturing method of a large-diameter anti-corrosion plastic-coated steel tube. The manufacturing method of the large-diameter anti-corrosion plastic-coated steel tube adopts the following manufacturing device of the large-diameter anti-corrosion plastic-coated steel tube. The manufacturing device of the large-diameter anti-corrosion plastic-coated steel tube comprises a base, a bearing mechanism, sliding bottom plates, an adjusting mechanism, a welding mechanism and a driving mechanism, wherein the bearing mechanism is arranged in the middle of the upper end face of the base, the sliding bottom plates are arranged on the upper end face of the base and located on the left side and the right side of the bearing mechanism in a left-right sliding fit mode, and the adjusting mechanism, the welding mechanism and the driving mechanism are sequentially arranged on the upper end faces of the sliding bottom plates from back to front. The problems that in the process of welding a flange and a large-diameter anti-corrosion plastic-coated steel tube in a manual mode, the plastic-coated steel tube and the flange are prone to shaking, then the welding effect between the flange and the plastic-coated steel tube is lowered, and the efficiency of manually welding the flange and the plastic-coated steel tube is low and the like are solved.

Description

technical field [0001] The invention relates to the field of manufacturing plastic-coated steel pipes, in particular to a method for manufacturing large-caliber anti-corrosion plastic-coated steel pipes. Background technique [0002] Plastic-coated steel pipes, also known as plastic-coated pipes, steel-plastic composite pipes, and plastic-coated composite steel pipes, use steel pipes as the substrate, and weld a layer of plastic anti-corrosion layer or Steel-plastic composite steel pipe with plastic anti-corrosion layer welded on the inner and outer surfaces. The plastic-coated steel pipe also contains a large-diameter plastic-coated steel pipe. The large-diameter plastic-coated steel pipe is widely used in seawater treatment, quicksand engineering, marine engineering, chemical sewage and other projects, and has high strength, good toughness, anti-aging and corrosion resistance. , long service life, good combination with the insulation layer, etc., and the two ends of the l...

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Problems solved by technology

[0004] 1. When manually welding the flange and the plastic-coated steel pipe, it is usually necessary to place the plastic-coated steel pipe and the flange on the upper end of the support bracket, and then manually weld the flange on both sides of the plastic-coated steel pipe. However, the support bracket It is difficult to stably clamp the plastic-coated steel pipe and the flange, which makes the plastic-coated steel pipe and the flange easy to shake during the welding process, which reduces the welding effect between the flange and the plastic-coated steel pipe;

[0005] 2. The existing technology can usually only weld one side of the plastic-coated steel pipe at the same time, and the manual welding process between the flange and the plastic-coated steel pipe needs to be constantly moved to replace the welding position, so the manual welding of the flange and the plastic-coated steel pipe The efficiency of welding between pipes is low, and the welding operators need to move their positions constantly, resulting in high work intensity

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