Machining process for double-layer composite metallic tube

A double-layer composite and processing technology, which is applied in the field of metal double-layer composite pipe processing technology, can solve the problems of difficult to guarantee processing quality, high product scrap rate, low profit margin, etc., to reduce product scrap rate and optimize processing The effect of simple process and processing technology

Active Publication Date: 2017-02-01
山东辛丁管理咨询有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

In the traditional processing technology, it is necessary to use dozens of processes such as stamping and shrinking to complete the processing of a bimetallic comp

Method used

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  • Machining process for double-layer composite metallic tube
  • Machining process for double-layer composite metallic tube
  • Machining process for double-layer composite metallic tube

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Embodiment Construction

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

[0023] A kind of processing technology of metal double-layer composite pipe, this technology comprises the following steps:

[0024] The first step is to select the metal outer tube 1 and the metal inner tube 2 to be processed so that the length of the metal outer tube 1 is greater than the length of the metal inner tube 2, and insert the metal inner tube 2 into the inside of the metal outer tube 1;

[0025] In the second step, sealing plugs 3 are installed at both ends of the metal outer tube 1;

[0026] The third step is to select the inner tube forming die 4, the inner tube model cavity 41 of the inner tube forming die 4 is consistent with the shape of the outer wall of the metal inner tube 2 after forming; the metal outer tube 1 and the metal inner tube 2 that are socketed together are placed into the inner tube mold cavity 41, see figure 1 ;

[0027] The fourth...

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Abstract

The invention discloses a machining process for a double-layer composite metallic tube. The process sequentially comprises the following steps that an outer metallic tube body and an inner metallic tube body are placed into an inner tube model cavity; high-pressure water is led into the inner metallic tube body so as to finish inner high-pressure forming of the inner metallic tube body, and a primary semi-finished double-layer composite metallic tube is prepared; the primary semi-finished double-layer composite metallic tube is placed into an outer tube model cavity; high-pressure water is led into the outer metallic tube body so as to finish inner high-pressure forming of the outer metallic tube body, and a secondary semi-finished double-layer composite metallic tube is prepared; and end post-treatment is conducted on the secondary semi-finished double-layer composite metallic tube, so that the finished double-layer composite metallic tube is prepared. Two passes of inner high-pressure forming are adopted, the forming effects of the inner metallic tube body and the outer metallic tube body are guaranteed, the machining procedures are optimized, and the machining process is more concise, so that the machining efficiency is improved, the profit rate is increased, and the product rejection rate is decreased.

Description

technical field [0001] The invention relates to the technical field of metal double-layer composite pipes, in particular to a processing technology of metal double-layer composite pipes. Background technique [0002] Bimetal composite pipe is a cost-effective product, which has been widely used in the fields of energy, shipbuilding, chemical industry, petroleum and machinery manufacturing. Bimetal composite pipe structure. The structure of the bimetal composite pipe is divided into two parts: the metal outer pipe and the metal inner pipe. The bonding force of the two parts is the main symbol to measure the reliability of the bimetal mechanical composite process. In the traditional processing technology, it is necessary to use dozens of processes such as stamping and shrinking to complete the processing of a bimetallic composite pipe. Not only is the process cumbersome and the profit margin is low, but the product scrap rate is high and the processing quality is difficult. ...

Claims

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Application Information

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IPC IPC(8): B21D26/051B21D26/045
CPCB21D26/045B21D26/051
Inventor 吴尧锋刘文刘明亮于艳东李继强
Owner 山东辛丁管理咨询有限公司
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