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Thin wall metal casing plastic composite pipe and its producing method

A metal shell, plastic parts technology, applied in the direction of pipe elements, pipes/pipe joints/pipe fittings, pipes, etc., can solve the problems of unfavorable mass production, unstable quality, low efficiency, etc. Low, high welding efficiency

Inactive Publication Date: 2007-04-11
浙江芽芽特种管业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, manual welding of thin-walled metal shells not only requires welders to master superb welding techniques, but also has low efficiency, unstable quality, and is not conducive to mass production.

Method used

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  • Thin wall metal casing plastic composite pipe and its producing method
  • Thin wall metal casing plastic composite pipe and its producing method
  • Thin wall metal casing plastic composite pipe and its producing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] Below, the present invention is described in further detail in conjunction with accompanying drawing and specific embodiment:

[0021] Figure 1: The elbow is composed of plastic parts and a metal shell, and the elbow shell is composed of three parts with different shapes - W1, W2, and W3. W1 is composed of a tube with one end turned inward twice and a half tube cut along the axis; W2 is composed of a half tube cut along the axis and a 1 / 4 spherical shell; W3 is a circle Disk, the hole in the middle of the disk has a flange.

[0022] Figure 2: When W1, W2, and W3 are welded as a whole, there are two straight-line welds and a 1 / 2 circular weld between W1 and W2, and a circular weld between W3 and W1W2.

[0023] Figure 3: The tee is composed of plastic parts and a metal shell, and the tee shell is composed of three parts - two W1s and one W3.

[0024] Figure 4: When two W1s and one W3 are welded into a whole, there are two sections of straight line welds and 1 / 2 circular...

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PUM

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Abstract

The present invention relates to composite pipe fitting with thin wall metal casing and plastic layer and its production process. The composite pipe fitting is used in connecting thin wall metal pipe with plastic lining. The composite pipe fitting features its metal casing comprising several parts with seams of straight lines and circular lines. Therefore, the composite pipe fitting may have its thin wall metal casing welded in production line with manipulator in low cost, high quality and high efficiency.

Description

technical field [0001] The invention relates to a plastic composite pipe fitting with a thin-wall metal shell and a production method thereof. The pipe fitting is used for connecting plastic-lined thin-wall metal pipes. Background technique [0002] In the plastic-lined thin-walled metal piping system, the pipes and fittings can be connected by hot-melt connection. The outer layer of the pipe fittings has a thin-walled metal protective shell, and the inner layer is a plastic pipe fitting that is hot-melt connected with the pipe (the function of the thin-walled metal shell of the pipe fitting is to protect the inner plastic pipe fitting, and has no connection function). [0003] The production method that has appeared is: use two parts of the processed metal shell to tightly wrap the plastic pipe fittings in it, and the metal shell can be connected as a whole by welding, riveting, bonding and other methods to make thin-walled metal-plastic composite pip...

Claims

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Application Information

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IPC IPC(8): F16L9/147F16L43/00F16L41/00
Inventor 万平华沈宇轩沈舞源
Owner 浙江芽芽特种管业有限公司
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