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Magnetic pulse forming method for lining bimetal composite pipe

A bimetallic composite pipe and magnetic pulse forming technology, which is applied to the field of magnetic pulse forming processing of lined bimetallic composite pipes, can solve the problem that the bimetallic composite pipe cannot be formed into large-diameter tube blanks and other problems, and achieves easy processing energy and reduced processing energy. Friction effect, high processing efficiency effect

Active Publication Date: 2015-11-04
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem that the existing method of magnetic pulse forming bimetallic composite pipe cannot form the composite of large-diameter pipe blanks, and to provide a magnetic pulse forming processing method for lining bimetallic composite pipe

Method used

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  • Magnetic pulse forming method for lining bimetal composite pipe
  • Magnetic pulse forming method for lining bimetal composite pipe

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Experimental program
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specific Embodiment approach 1

[0023] Specific implementation mode 1: A magnetic pulse forming processing method of a lined bimetallic composite pipe according to this implementation mode is carried out according to the following steps:

[0024] 1. Surface purification treatment of the composite tube billet: clean the inner surface of the composite outer tube and the outer surface of the composite inner tube with acetone to remove the pollutants on the inner surface of the outer tube to be composite and the outer surface of the inner tube to be composited , to obtain the cleaned outer pipe to be compounded and the cleaned inner liner to be compounded;

[0025] 2. Positioning and clamping of the composite tube blank: first use alcohol to wipe the inner surface of the cleaned outer tube to be composited and the outer surface of the cleaned inner tube to be composited, and then the outer tube to be composited and The lining pipe to be composited is placed concentrically, and the pipe wall gap between the outer...

specific Embodiment approach 2

[0035] Embodiment 2: This embodiment differs from Embodiment 1 in that the outer pipe to be composited in step 1 is a carbon steel pipe. Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0036] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the lining pipe to be compounded in Step 1 is an aluminum pipe. Other steps and parameters are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to a bimetal composite pipe machining method in particular to a magnetic pulse forming method for a lining bimetal composite pipe. The method aims at solving the problem that an existing magnetic pulse bimetal composite pipe forming method cannot combine a large-diameter pipe blank. The method includes the steps of firstly, surface purification treatment of the pipe blank to be combined, secondly, locating and clamping of the pipe blank to be combined, thirdly, machining of the first combining sub-step, fourthly, machining of the following combining sub-steps and fifthly, machining of the bimetal composite pipe. By the adoption of the forming method, an expanding and bulging manner of a thin wall pipe is used for achieving mechanical combination of an inner pipe and an outer pipe, the manufacturing process is simple, and the combined strength can reach 0.5 MPa to 13 MPa compared with similar products and higher than the combined strength of about 0.2 MPa of the similar products. The forming method is suitable for manufacturing the lining bimetal composite pipe.

Description

technical field [0001] The invention relates to a processing method for a bimetallic composite pipe, in particular to a magnetic pulse forming processing method for lining a bimetallic composite pipe. Background technique [0002] Composite pipe, also known as bimetallic pipe, is also called clad pipe. It is composed of two metal pipes of different materials. The pipe layers are tightly combined through certain deformation or connection technology to form an integrated layered composite material. Compared with single metal pipes, bimetallic composite pipes take advantage of the advantages of the two metals. It not only has the required high strength, but also has excellent properties such as good corrosion resistance and wear resistance, so as to achieve "make the best use of everything". "the goal of. [0003] In recent years, a large number of lined bimetallic composite pipes have been widely used at home and abroad in water supply pipelines, oil and gas field pipelines, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D26/14
Inventor 范治松于海平李春峰
Owner HARBIN INST OF TECH
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