Method for manufacturing plastic forming thin wall three-way pipe with threaded couplings

A threaded interface and plastic forming technology, which is applied in the direction of metal extrusion dies, etc., can solve the problems of high material cost and manufacturing cost of casting tee pipes, complex and large manufacturing equipment, and high sealing requirements, etc., and achieve the required power for forming. , Reduce material cost and manufacturing cost, small volume effect

Inactive Publication Date: 2005-09-21
王文辉
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing tee pipe manufacturing methods use casting technology. Due to the limitations of the casting process, the wall of the manufactured tee pipe is often thicker, and the thread of the tee pipe generally needs to be turned out by a lathe, resulting in the casting of the tee pipe. Higher material and manufacturing costs
There is another method for manufacturing tee pipes, which uses liquid as the medium for extrusion molding. Its disadvantages are that it requires high sealing performance, and the power required for molding is relatively large, which makes its manufacturing equipment more complex and bulky, and the tee pipe's The three-section interface thread is not formed at the same time

Method used

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  • Method for manufacturing plastic forming thin wall three-way pipe with threaded couplings
  • Method for manufacturing plastic forming thin wall three-way pipe with threaded couplings

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Embodiment Construction

[0012] The present invention is described in further detail by the following examples.

[0013] Such as figure 1 , figure 2 As shown, the manufacturing method of a thin-walled three-way pipe with plastically formed threaded joint in this embodiment, the process steps are to insert the stainless steel tube blank 1 into the mold 2 composed of two valves, and insert the plastic mold 3 into the stainless steel tube blank 1 , and then insert the shaft columns 4 and 5 into the two ends of the tube blank 1 respectively, and apply axial forces P1 and P2 of 20-50Mpa to the shaft columns 4 and 5, so that the rubber mold 3 is compressed by the axial forces P1 and P2 to produce The bulging force forces the middle part of the stainless steel tube blank 1 to produce plastic deformation near the tube wall of the forming cavity 7 in the mold and the tube walls close to the three sections of threads 10, 11, and 12, and exhausts the gas from the exhaust cavity 6, and presses the forming cavit...

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Abstract

This invention discloses a method for making plastic-shaping light-wall tee pipe with shoulder interface, belonging to common accessories-making technology field for pipe joint, which bears disadvantages of convenient process, less need of equipments and power, and can one-shot form tee pipe and triple screw thread and lower cost. It is characterized in inserting pliofilm in light-wall pipe blank with bipetalous mold, exerting axial force to pliofirm by two side jack-posts, forcing the blank to generate plastic deformation, and forming as the shape of shaping chamber and triple screw thread. The invention is mainly applied in making light-wall tee steel pipe, especially stainless steel pipe, and also in non-metal material pipes.

Description

technical field [0001] The invention relates to the technical field of manufacturing common fittings for pipe connections, in particular to a method for manufacturing a thin-wall tee pipe with a plastically formed threaded joint. Background technique [0002] Tee pipe is an indispensable and common fitting in the connection of liquid conveying pipes. Most of the existing tee pipe manufacturing methods use casting technology. Due to the limitations of the casting process, the wall of the manufactured tee pipe is often thicker, and the thread of the tee pipe generally needs to be turned out by a lathe, resulting in the casting of the tee pipe. The material cost and manufacturing cost are higher. There is another method for manufacturing tee pipes, which uses liquid as the medium for extrusion molding. Its disadvantages are that it requires high sealing performance, and the power required for molding is relatively large, which makes its manufacturing equipment more complex and...

Claims

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Application Information

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IPC IPC(8): B21C23/14B21C25/02
Inventor 王文辉
Owner 王文辉
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