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Spinning and cold drawing process of three-way pipe

A three-way pipe and process technology, applied in the field of three-way pipe spinning and cold drawing technology, can solve the problems of uneven pipe mouth, increased production cost, and large taper of the pipe body, so as to reduce production cost, prevent cracks, and pipe Mouth smoothing effect

Inactive Publication Date: 2015-03-25
HENGYANG FENGSHUN AXLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the tee fittings commonly used in the refrigeration system and petrochemical industry mostly use cold drawing or liquid bulging methods, and new pipes are processed on the main body, which are processed by traditional cold drawing process or liquid bulging method. The taper of the new pipeline is large, the nozzle is prone to unevenness, and cracks often appear, which is easy to produce waste products and increase production costs

Method used

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  • Spinning and cold drawing process of three-way pipe

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Embodiment Construction

[0011] Such as figure 1 As shown, a tee pipe spinning cold drawing process, the specific process steps are as follows

[0012] 1. According to the height of the pipe body and the diameter of the nozzle of the new pipeline 2, drill a pre-processed hole on the pipe fitting 1 to be processed;

[0013] 2. Put the spinning body 3 with a cross-sectional diameter larger than the pre-processing hole from one end of the pipe fitting 1 under the pre-processing hole and align the connecting hole of the spinning body 3 with the pre-processing hole so that the two holes are concentric;

[0014] 3. Set a top-sealed tubular spinning sleeve 5 with a flat inner wall on the pre-processed hole, and install a spring 6 on the upper part of the spinning sleeve 5, and pass the expansion head of the machine tool connecting rod 4 through the spring 6, the tubular spinning sleeve in turn. The top surface of the pressing sleeve 5 and the pre-processed hole are closely connected with the connecting hole...

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PUM

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Abstract

The invention relates to a spinning and cold drawing process of a three-way pipe. The spinning and cold drawing process is characterized by comprising the steps of drilling a preprocessed hole, screwing a spinning body, connecting a machine tool, spinning and drawing. When a connection rod is pulled outwards along the axial direction of the preprocessed hole, a pipe body is pressed downwards by a spinning sleeve under the effect of a spring, a rising position of a pipe orifice of a new pipeline is limited, so that the new pipeline extends upwards along the inner wall of the spinning sleeve, the produced pipe body is small in taper, the pipe orifice is smooth, the crack is unlikely to occur, fewer reject products are produced, simplicity and convenience in operation can be realized, and the production cost can be effectively reduced.

Description

technical field [0001] The invention relates to a cold-drawing process for pipe fittings, in particular to a three-way pipe spinning cold-drawing process. Background technique [0002] At present, the tee fittings commonly used in the refrigeration system and petrochemical industry mostly use cold drawing or liquid bulging methods, and new pipes are processed on the main body, which are processed by traditional cold drawing process or liquid bulging method. The pipe body of the new pipeline has a large taper, and the nozzle is prone to unevenness, and cracks often occur, which is easy to produce waste products and increase production costs. Contents of the invention [0003] In order to solve the above-mentioned technical problems, the present invention provides a tee pipe spinning and cold drawing process that combines spinning and cold drawing processes to produce pipe fittings with small taper, flat nozzles, and less cracks. [0004] For realizing the above-mentioned p...

Claims

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Application Information

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IPC IPC(8): B21C37/29
CPCB21C37/29
Inventor 刘登发
Owner HENGYANG FENGSHUN AXLE CO LTD
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