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Method for manufacturing parts of multiple way union

A manufacturing method and technology of multi-way pipes, which are applied in the field of manufacturing multi-way metal pipe joints, can solve the problems of increased manufacturing costs of multi-way pipe joints, and achieve the effects of short occupation time, high forming efficiency, and reduced manufacturing costs

Inactive Publication Date: 2005-11-16
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this technology can form multi-way pipe joint parts with a large straight pipe height, it needs to use special equipment with a high-pressure hydraulic system, which increases the manufacturing cost of multi-way pipe joints

Method used

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  • Method for manufacturing parts of multiple way union
  • Method for manufacturing parts of multiple way union

Examples

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Embodiment Construction

[0014] to combine figure 1 Taking the three-way pipe joint part as an example, describe the concrete manufacturing method of the present invention:

[0015] First cut the straight pipe to length ( figure 1 a), pouring heated and melted low melting point medium such as industrial vaseline into the tube ( figure 1 b); cooled to a solid, the two ends can be sealed with a plastic (such as polyethylene) film with holes in the middle; then wrap the pipe wall with a plastic film (preferably a polytetrafluoroethylene film with a low friction coefficient) ( figure 1 c), into the forming die; at least one of the two punches has a hole in the center. When forming, the punch squeezes the pipe filled with low-melting point medium during the feeding process, which not only feeds the pipe, but also automatically generates internal high pressure by extruding the low-melting point medium, so that the tee part is formed. The tip of the punch has a tapered step ( figure 2 Shown), squeeze in...

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Abstract

A technology for manufacturing the jointer of multi-way pipe includes cutting a through pipe by needed length, filling the fused low-smelting-point medium in the pipe, cooling to become solid, sealing both ends by the plastic film with central hole, wrapping the pipe surface by plastic film, putting it in shaping die, and using two punch heads to press the both ends of pipe to become said jointer.

Description

technical field [0001] The invention belongs to a manufacturing method of a multiway metal pipe joint. Background technique [0002] Multi-way metal pipe joints include three-way, four-way and other pipe joint parts. They are commonly used industrial pipe fittings and are widely used in the transmission of liquid and gas. Metal multi-way pipe joints are generally manufactured from straight pipes through special equipment and molds. During the manufacturing process, a medium capable of transmitting deformation force is required inside the pipe for forming and preventing wrinkling. There are mainly two types of existing metal multi-way pipe joint manufacturing technologies: 1) one needs to be filled with rubber medium. By axially extruding the pipe filled with rubber medium in the die, the straight pipe is deformed into a multi-way pipe joint under the combined action of axial feeding and the pressure generated by the extruded rubber. The disadvantage is that due to the poor...

Claims

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Application Information

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IPC IPC(8): B21D26/037
Inventor 高霖李泷杲谢兰生李波
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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