An operation method of a fully automatic internal and external plastic coating production line for steel pipes

Abstract

The invention provides an operating method for a full-automatic inside-outside plastic coating production line of a steel pipeline. Machining platforms for steel pipe plastic coating are arranged on conveying devices linearly arranged in the same plane. The four sections of the machining platforms of the steel pipe include the inside plastic coating section, the preheating section, the cooling section and the discharging section. The steel pipe moves through two rows of rubber conveying wheels in the axial direction and enters dust removal holes in an outside dust removal device to be subjected to outside rust removal. The steel pipe is placed on an inside dust removal feeding device to be subjected to inside rust removal; medium-frequency electric heating is conducted through a heating device, and the inner wall of the steel pipe is subjected to plastic coating through an inside plastic coating device; the steel pipe moves in the axial direction and enters the holes in the outside plastic coating device to be subjected to outside plastic coating; the end of the steel pipe gradually enters the cooling device, and the steel pipe obtained after outside plastic coating is conducted is cooled with spray water in a water tank; the steel pipe is packaged and warehoused after the assay is approved. According to the operating method, full-automatic continuous production is controlled through a system on the aspects of inside and outside rust removal, heating, inside and outside plastic coating and cooling, the cost is low, environmental protection, energy saving and non-pollution are achieved, high management quality is facilitated, and production of different pipe diameters is achieved.

Description

technical field [0001] The invention relates to pipeline anti-corrosion production equipment for steel pipelines, in particular to an operation method for a fully automatic internal and external plastic coating production line for steel pipelines. Background technique [0002] At present, plastic-coated steel pipe is a new type of high-efficiency anti-corrosion steel, which has excellent anti-corrosion performance, high compressive strength, long service life, smooth inner surface, good liquid flow performance, etc., making it quickly recognized by the market. However, my country's plastic-coated steel pipe production technology and equipment and its product status are still in the development stage, and there are many gaps compared with the more developed countries in the world. In the production of anti-corrosion steel pipes, especially in the production of anti-corrosion steel pipes with large and small diameters, most of the production equipment used is independent, and ...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the current domestic production of anti-corrosion steel pipes, especially in the production of anti-corrosion steel pipes with large and small diameters. Most of the production equipment used is independent, and each process is produced independently. There are not many manufacturers, and most of them are small-scale production. From process technology, equipment to product quality, and production efficiency, they are still in the initial stage of development. This production method is time-consuming, energy-consuming, dusty, and polluting; Through reasonable design, an operation method of a fully automatic internal and external plastic coating production line for steel pipes is provided. The present invention can realize fully automatic continuous production from internal and external rust removal, heating, internal and external plastic coating, and cooling controlled by a program control system, thereby improving production efficiency. , to reduce production costs and eliminate pollution, it is necessary to design a fully automatic production line that is conducive to improving product quality, energy saving, environmental protection, and continuous production to solve problems encountered in the production process; reasonable layout and easy management , reduced labor intensity, small footprint, high production efficiency, energy saving and environmental protection, and can meet the production needs of different pipe diameters

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