Manufacturing method of aluminium butt welding type composite pipe

A manufacturing method and technology for composite pipes, which are applied to manufacturing tools, welding equipment, tubular articles, etc., can solve problems such as complex production processes, and achieve the effects of high pipe quality, fast welding speed, and uniform pipe wall thickness.

Inactive Publication Date: 2020-03-06
樊伟
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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 method for manufacturing an aluminum bu

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0031] Example 1

[0032] First, punch the aluminum strip according to a certain arrangement pattern; the aluminum strip is transformed into an aluminum half-pipe through a pre-forming mechanism; After the tube is released from the mold, it is welded into a tube; the polymer plastic material, acrylic acid and filler are fully mixed, heated to 165 ° C, and extruded through an extruder; the extruded plastic polymer is extruded with an inner tube head. At the same time, blow out compressed air to expand and press the inner plastic tube; extrude the extruded plastic high molecular polymer out of the outer plastic tube with the outer tube head, wrap the outer rubber and the outer plastic on the outer wall of the aluminum tube, and put the polymer The propylene hot-melt adhesive is evenly coated on the inner and outer walls of the perforated aluminum tube; the temperature in the mold cavity is heated to about 220 ° C, the pressure is increased to more than 7Mpa, and the constant tem...

Example Embodiment

[0034] Example 2

[0035] First, punch the aluminum strip according to a certain arrangement pattern; the aluminum strip is transformed into an aluminum half-pipe through a pre-forming mechanism; After the tube is released from the mold, it is welded into a tube; the polymer plastic material, acrylic acid and filler are fully mixed, heated to 165 ° C, and extruded through an extruder; the extruded plastic polymer is extruded with an inner tube head. At the same time, blow out compressed air to expand and press the inner plastic tube; extrude the extruded plastic high molecular polymer out of the outer plastic tube with the outer tube head, wrap the outer rubber and the outer plastic on the outer wall of the aluminum tube, and put the polymer The propylene hot-melt adhesive is evenly coated on the inner and outer walls of the perforated aluminum tube; the temperature in the mold cavity is heated to about 220 ° C, the pressure is increased to more than 7Mpa, and the constant tem...

Example Embodiment

[0037] Example 3

[0038]First punch the aluminum strip according to a certain arrangement pattern; the aluminum strip is transformed into an aluminum half-pipe through the pre-forming mechanism; After the tube is released from the mold, it is welded into a tube; the polymer plastic material, acrylic acid and filler are fully mixed, heated to 165 ° C, and extruded through an extruder; the extruded plastic polymer is extruded with an inner tube head. At the same time, blow out the compressed air to expand the inner plastic tube and pressurize it; extrude the extruded plastic high molecular polymer out of the outer plastic tube with the outer tube head, wrap the outer plastic and the outer plastic on the outer wall of the aluminum tube, and put the polymer The propylene hot-melt adhesive is evenly coated on the inner and outer walls of the perforated aluminum tube; the temperature in the mold cavity is heated to about 220 ° C, the pressure is increased to more than 7Mpa, and the...

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Abstract

The invention discloses a manufacturing method of an aluminium butt welding type composite pipe. The manufacturing method is carried out according to the following specific steps: punching an aluminium strip to manufacture an aluminium half pipe; welding the aluminium half pipe into a pipe; preparing a plastic high-molecular polymer; extruding the plastic high-molecular polymer out of an internalplastic pipe and an external plastic pipe, and uniformly coating polypropylene hot melt adhesive on the inner and outer walls of a porose aluminium pipe; simultaneously feeding the internal plastic pipe, the external plastic pipe and the porose aluminium pipe in the die cavity of a coextrusion die head; after the pipe finishing copolymerization for formation, adopting the circulating water coolingmanner to cool to the room temperature, and storing the pipe for 3-7 hours to finish cross-linking reaction; and adding a thermite and the additive silicon dioxide in the inner cavity of the composite pipe to have thermit reaction so as to form a ceramic layer, so that the composite pipe base material and a composite coating are integrally solidified to form the composite pipe. The manufacturingmethod solves the problem in the prior art that the production technology is complicated.

Description

technical field [0001] The invention belongs to the technical field of composite pipe manufacture, and relates to a method for manufacturing an aluminum butt-welded composite pipe. Background technique [0002] At present, aluminum-plastic composite pipes are made of aluminum plates and strips, overlapped and overlapped with each other, and then the ultrasonic welding head is used to heat up the overlapping pipe walls to melt and weld them together to form a pipe. This method can only weld 0.3mm The following thin materials, but the welding speed is slow, and at the same time, due to the stitch welding, the geometric dimensions of the pipe are inaccurate, the thickness of the pipe wall is uneven, and the combination of the aluminum pipe and the plastic pipe is not firm, thus affecting the treatment of the overall composite pipe. The production process is as follows: It consists of a device for forming a continuous metal strip into a U-shaped strip, a jig sleeve that bends th...

Claims

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Application Information

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IPC IPC(8): B29D23/00B29C48/09B29C48/21B23K31/02C23C26/02
CPCB23K31/027B29D23/001B29C48/09B29C48/21C23C26/02
Inventor 樊伟
Owner 樊伟
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