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Opposite roller spinning and deformation heat treatment combined manufacturing process for large bellows

A manufacturing process and bellows technology, which is applied in the compound manufacturing process of wheel spinning and deformation heat treatment of large bellows, can solve the problems of limited processing capacity of spinning equipment and difficult processing of large-diameter thick-walled pipe fittings, etc., to reduce Requirements for equipment power and forming force, requirements for reducing equipment forming force, and the effect of reducing heat treatment costs

Active Publication Date: 2014-12-03
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

Spinning technology can process rotating parts very well, but ordinary spinning equipment has limited processing capacity, and it is difficult to process large-diameter thick-walled pipe fittings

Method used

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  • Opposite roller spinning and deformation heat treatment combined manufacturing process for large bellows
  • Opposite roller spinning and deformation heat treatment combined manufacturing process for large bellows
  • Opposite roller spinning and deformation heat treatment combined manufacturing process for large bellows

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Embodiment Construction

[0022] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0023] refer to figure 1 , figure 2 with image 3 , a compound manufacturing process of wheel spinning and deformation heat treatment for large bellows, comprising the following steps:

[0024] The first step is to clamp the cylindrical blank 1 on the main shaft of the spinning machine, and run a set of first internal rotation wheels 2 and second internal rotation wheels 3 with more than one corrugated inner shape to the clamping end of the blank 1 Close position, close to the inner surface of blank 1, non-contact;

[0025] The second step is to run a group of first outer rotation wheels 4 and second outer rotation wheels 5 with more than one corrugated shape to the position opposite to the first inner rotation wheel 2 and the second inner rotation wheel 3 on the outside of the blank 1, Close to the outer surface of blank 1, non-contact;

[0026] The third step...

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Abstract

The invention provides an opposite roller spinning and deformation heat treatment combined manufacturing process for large bellows. The deformation heat treatment mode is used in an opposite roller spinning process, and novel internally and externally rotated roller sets provided with one or more corrugation shapes are used for spinning corrugation sequentially under the condition of local heating. The manufacturing process can process the bellows with large diameter, large wall thickness and high strength and has the characteristics of high processing capability and high adaptability.

Description

technical field [0001] The invention belongs to the technical field of plastic processing of large corrugated pipes, and in particular relates to a compound manufacturing process of wheel spinning and deformation heat treatment of large corrugated pipes. Background technique [0002] Large bellows are widely used in oil and gas transportation, chemical plants, heating pipelines and other fields. The traditional manufacturing process of this kind of parts is mainly hydraulic bulging, rolling, etc. The process is complicated, and some bellows that need to be completed by a large number of welding processes have problems such as easy cracking, easy corrosion, and poor strength. Since large bellows have certain requirements for rigidity and strength, and in many cases require corrosion resistance, there is a great demand for metal bellows with large wall thickness. Spinning technology can process rotating parts very well, but the processing capacity of ordinary spinning equipme...

Claims

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Application Information

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IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 赵升吨朱成成孟德安张琦范淑琴
Owner XI AN JIAOTONG UNIV
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