Sealing method of steel-frame reinforced plastic composite pipe

A technology for reinforced plastic and composite pipes, applied in the field of plastic pipe processing, can solve the problems of difficult sealing quality, high production cost, cumbersome operation, etc., and achieve the effect of reducing personnel and equipment, reducing sealing cost and improving sealing performance.

Inactive Publication Date: 2010-02-03
DAQING PETROLEUM ADMINISTRATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a reinforced steel frame that can ensure the quality of the seal in order to solve the existing problems such as cumbersome operation of the straight pipe sealing process of the steel skeleton plastic composite pipe, complicated equipment required, high production cost, and difficulty in ensuring the sealing quality. The Method of Sealing the Steel Skeleton on the Straight Pipe End Face of Plastic Composite Pipe

Method used

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  • Sealing method of steel-frame reinforced plastic composite pipe

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with embodiment:

[0017] The steel frame reinforced plastic composite pipe sealing method comprises the following steps:

[0018] ① Clean the heating plate with a clean cotton fabric;

[0019] ② Grind the end face of the pipe with an electric angle grinder to remove the oxide layer;

[0020] ③Tighten the pipe 1, plastic preheating ring 2, and plastic sealing ring 4 on the welding machine at the same time, and keep the end faces aligned;

[0021] ④ Use a milling cutter to mill the end face of the pipe to be melted and the end face of the sealing ring, and start welding immediately after milling;

[0022] ⑤ Install the heating plate 3 between the plastic preheating ring 2 and the plastic sealing ring 4, make the end faces of the plastic preheating ring 2 and the plastic sealing ring 4 stick to the heating plate, and apply a pressure of 0.15MP;

[0023] ⑥Heat the heating plate 3. The temperature of th...

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Abstract

The invention discloses a sealing method of a steel-frame reinforced plastic composite pipe, comprising the following steps: grinding the end surfaces to be smooth, removing a pipe material (1), a plastic pre-heating ring (2) and a plastic sealing ring (4) of an oxidation layer, installing on a welding machine and clamping and keeping the end surfaces to be aligned; using a milling cutter to millthe end surfaces of the sealing ring to be melted; installing a heating plate (3) between the plastic pre-heating ring (2) and the plastic sealing ring (4), and applying pressure of 0.15MP; heating the heating plate (3), releasing pressure when the temperature of the steel-frame composite pipe end surface plastic is 210+/-10 DEG C, and drawing the heating plate (3) fast; stably closing the pre-heating ring and the sealing ring; and disassembling the clamp after the cooling nominal wall thickness/2 of the melted areas adds ten minutes, and taking out the pipe material. The stability of sealingquality of the pipe material and the leakproofness of the pipe system are respectively and obviously improved, the used staffs and the equipment in the procedure of sealing are obviously reduced, thusleading the sealing cost of the pipe material to be obviously reduced.

Description

Technical field: [0001] The invention relates to the technical field of plastic pipe processing, in particular to a sealing method for a steel frame reinforced plastic composite pipe. Background technique: [0002] At present, there are two commonly used sealing methods for steel skeleton reinforced plastic composite pipe ends: cone sealing and flat sealing: 1. Cone sealing: first use a cyclone lathe to seal and turn the end of the pipe to make it meet the requirements of the sealing turning size. Remove the remaining weft steel wires, and polish the end steel wires, then use an external heater to bake and heat the outer circular surface of the straight pipe seal, clamp the baked pipe ends into the sealing injection molding mold, and use Injection molding equipment seals the straight semi-finished pipe, the seal made has a taper, the injected melt is in the state of end surface and circumferential coating, and the outer diameter of the seal is larger than the outer diameter ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C65/02
Inventor 林宝清冯海彦姜琳琳
Owner DAQING PETROLEUM ADMINISTRATION
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