Method for manufacturing lining plastic composite carbon steel pipe

A manufacturing method and composite carbon technology are applied in the manufacturing field of environmentally friendly composite pipes, which can solve problems such as poor composite quality of composite pipes, and achieve the effects of good rigidity, low production cost, and overcoming destructive effects.

Inactive Publication Date: 2005-01-26
成都帝拓管业科技开发有限公司
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the above-mentioned types of composite pipes with poor composite quality, and provide users with a plastic-lined composite carbon pipe with low investment, low cost, good rigidity, wide applicability, and excellent composite quality, which can meet the urgent needs of the market. Manufacturing method of steel pipe

Method used

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  • Method for manufacturing lining plastic composite carbon steel pipe
  • Method for manufacturing lining plastic composite carbon steel pipe
  • Method for manufacturing lining plastic composite carbon steel pipe

Examples

Experimental program
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Embodiment Construction

[0018] A method for manufacturing a liner composite carbon steel pipe. Firstly, the steel pipe 1 and the polypropylene plastic pipe 2 are inspected; the inner wall of the inspected steel pipe 1 is cleaned; the outer surface of the inspected polypropylene pipe 2 is coated with a glue machine. Apply a thin and uniform layer of adhesive 4 (that is, a hot melt that is solid at room temperature and melts when heated), and the thickness of the adhesive layer is controlled between 0.1 and 0.2 mm; the polypropylene tube 2 coated with adhesive Sleeve into the outer steel pipe 1, the sleeve gap 3 should be small and not large, so as not to damage the rubber layer; the fitted pipe is first sent to the general drawing machine to draw the mouth ring 5 compulsorily. pull out to reduce the diameter of the outer steel pipe 1, eliminate the casing gap 3, and properly make the polypropylene pipe 2 produce some elastic interference, so that the inner polypropylene pipe 2 and the outer steel pipe ...

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Abstract

The invention discloses a manufacturing method for plastic lining compound carbon steel pipe. The character is: the outer surface of the plastic pipe is painted with a layer thin and even bond which is solid in normal temperature; the plastic pipe is inserted into the external steep pipe whose inner wall is cleaned; the pipes are put into drawing machine to reduce the diameter of the external steep pipe, eliminate the gap, discharges the air, makes the two pipes attached tightly. The compound pipe is put into the heater before the interference elastic deformation force of the plastic pipe disappears, makes the bond melted to the best state and the two pipes are bonded together; then they are cooled to normal temperature and bonds the two pipes tightly; the merits are: the process is simple, the cost is low, and the quality is excellent, and it has no contamination to environment.

Description

technical field [0001] The invention relates to a method for manufacturing an environment-friendly composite pipe, in particular to an environment-friendly method for manufacturing a plastic-lined composite carbon steel pipe. Background technique [0002] At present, the manufacturing process of rigid environment-friendly composite pipes can be summarized into four categories: one is to put the finished plastic pipe into the finished aluminum pipe in advance, and then draw at room temperature to reduce the diameter of the outer aluminum pipe on a general-purpose drawing machine to eliminate the casing gap , and properly select the amount of interference, there is no adhesive between the layers, and the elastic fit generated by the interference amount forms a composite pipe with an outer surface of an aluminum tube and an inner layer of an environmentally friendly plastic tube. The second is to put the plastic pipe coated with adhesive (a kind of hot melt adhesive) on the out...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C63/18
Inventor 岳成平张孝琪曾鑫明
Owner 成都帝拓管业科技开发有限公司
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