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Metal pipeline multi-order ovality machining forming method

A metal pipe, processing and forming technology, applied in furnace types, manufacturing tools, heat treatment process control, etc., to avoid springback, ensure molding performance, and ensure processing accuracy.

Active Publication Date: 2022-01-04
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are many studies and analyzes on the second-order modal collapse of submarine pipelines, but there are few related studies on the multi-angle ellipticity of high-order modal collapse.

Method used

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  • Metal pipeline multi-order ovality machining forming method
  • Metal pipeline multi-order ovality machining forming method
  • Metal pipeline multi-order ovality machining forming method

Examples

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Comparison scheme
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Embodiment Construction

[0040] The implementation mode of the present invention is illustrated by specific specific examples below, and those who are familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this description. Obviously, the described embodiments are a part of the present invention. , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0041] Such as figure 1 As shown, the present invention provides a method for processing and forming metal pipes with multi-stage ellipticity, including:

[0042] S100. Determine the processing area of ​​the metal pipe 1 to be processed, and push the processing area onto the annular heating device 2;

[0043] S200, using the heating device 3 to surround the processing area and monitor the tempe...

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Abstract

The embodiment of the invention discloses a metal pipeline multi-order ovality machining forming method. The method comprises the steps that S100, a machining area of a to-be-machined metal pipeline is determined, and the machining area is pushed to an annular heating device; S200, a heating device is adopted to conduct surrounding heating on the machining area, and the temperature of the machining area is monitored; S300, when the temperature of the machining area reaches the preset temperature, the metal pipeline to be machined continues to be pushed till the machining area is located in an ovality machining device; and S400, the propelling depth of the ovality machining device at the multiple angles is calculated, inward propelling is conducted according to the obtained propelling depth, and the set metal pipeline with the multi-order ovality is obtained. According to the method, the metal pipeline is subjected to surrounding heating, the temperature is controlled, so that the prestress of the metal pipeline is effectively eliminated, the metal pipeline is further extruded from multiple angles on the basis of calculation of the propelling depth, and the metal pipeline with the multi-order ovality is formed.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of metal pipe ellipticity processing, and in particular to a method for processing and forming metal pipes with multi-stage ellipticity. Background technique [0002] With the development of marine resources, not only traditional industries such as deep-sea aquaculture have received greater attention, deep-sea mining and deep-sea oil fields have also been studied by countries all over the world. As a reliable and stable mode of transportation in the development of deep-sea resources, deep-sea pipelines are often accompanied by marine disasters due to the complex marine environment. Deep-water pipelines are subject to external loads and water pressure, and are prone to collapse and damage. Pipeline leakage will cause serious economic losses and environmental pollution. In order to improve the reliability of submarine pipeline design and ensure the stability of pipeline operation, it is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D31/00C21D9/08C21D11/00
CPCB21D31/00C21D9/08C21D11/00Y02A40/81
Inventor 余杨许伟澎田博文胡少谦刘泽生徐盛博
Owner TIANJIN UNIV