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Self-incremental spinning thermal mechanical coupling synchronous forming device and method for titanium-containing laminated composite tube

A technology of thermomechanical coupling and spinning forming, which is applied in the direction of forming tools, other manufacturing equipment/tools, metal processing equipment, etc., can solve the problems of resource waste, safety hazards, single metal pipe corrosion, bulging, etc., to reduce production costs, combine The effect of high strength and high elongation

Active Publication Date: 2018-07-06
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Metal pipes are widely used in petroleum, natural gas transportation, aerospace, construction, energy and chemical industries; due to the harsh environment, single metal pipes will corrode, bulge, and crack during use, and need to be replaced frequently pipelines to maintain normal work, resulting in a large waste of resources and potential safety hazards

Method used

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  • Self-incremental spinning thermal mechanical coupling synchronous forming device and method for titanium-containing laminated composite tube
  • Self-incremental spinning thermal mechanical coupling synchronous forming device and method for titanium-containing laminated composite tube
  • Self-incremental spinning thermal mechanical coupling synchronous forming device and method for titanium-containing laminated composite tube

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specific Embodiment approach

[0049] A kind of specific embodiment of the present invention is as follows:

[0050] Prepare ф inner 50mm*100mm*3mm aluminum-titanium composite pipe, the steps of the method are as follows:

[0051] (1) Mandrel preparation: Prepare a mandrel 1 with an inner diameter of ф50mm*180mm.

[0052] (2) Spinning of the lined aluminum tube 2: select the aluminum tube blank with mm*50mm*5mm inside ф, apply oil lubricant on the surface of the mandrel 1 and the inner wall of the lined aluminum tube 2, and spin with the spinning wheel 4, Set the number of passes and the thinning rate of each pass, multi-pass forward spinning, and the thinning rate of each pass is 20%-40%.

[0053] The feed rate is 1.5mm-3mm / r, the spindle speed is 600-800r / min, and the thickness of the pipe wall is reduced to 1.1mm (the change of wall thickness is 5→4.0→3.3→2.7→2.1→1.6→1.15).

[0054] (3) Install the outer tube: choose 5 titanium tube blanks with one end sealed and set them on the end of the aluminum tub...

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Abstract

The invention provides a self-incremental spinning thermal mechanical coupling synchronous forming device and method for a titanium-containing laminated composite tube. The self-incremental spinning thermal mechanical coupling synchronous forming device comprises a titanium tube blank, a titanium tube blank fixing device, a machining tool group, a self-resistance heating tool and a spinning forming device. The self-resistance heating tool comprises a high-frequency low-voltage power supply, a carbon brush holder assembly, a carbon brush rod, a magnetic fixing frame and a wire, wherein one endof the carbon brush rod is in interference fit with the carbon brush holder assembly through insulating treatment, and the other end of the carbon brush rod is fixed to the magnetic fixing frame in ascrew thread fit mode. The magnetic fixing frame is fixed to a moving tip. The positive pole of the high-frequency low-voltage power supply is connected with the carbon brush holder assembly through the wire, and the negative pole of the high-frequency low-voltage power supply is connected with a binding post of a spinning wheel. The high-frequency low-voltage power supply, the titanium tube blank, the spinning wheel, a tail top, the wire and the carbon brush holder assembly constitute a current loop. According to the self-incremental spinning thermal mechanical coupling synchronous forming device and method for the titanium-containing laminated composite tube, the prepared titanium-containing laminated composite tube is subjected to thermal mechanical coupling spinning, the bonding strength between the inner and outer pipe interfaces is large, and no cracking occurs.

Description

technical field [0001] The invention relates to the technical field of composite pipe preparation, in particular to a titanium-containing layered composite pipe self-incremental spinning thermodynamic coupling synchronous forming device and method. Background technique [0002] Metal pipes are widely used in petroleum, natural gas transportation, aerospace, construction, energy and chemical industries; due to the harsh use environment, single metal pipes will corrode, bulge, and crack during use, and need to be replaced frequently Pipes are used to maintain normal work, resulting in a large waste of resources and potential safety hazards. The emergence of composite pipes can solve the above problems very well, and also improve the utilization rate of metal resources; titanium has the advantages of high strength, high thermal strength, good corrosion resistance, and good low temperature performance. The outer pipe can obtain good anti-compression and impact resistance effect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D39/04B21D22/16B21D37/16B21D37/18B23P23/00
CPCB21D22/16B21D37/16B21D37/18B21D39/04B23P23/00
Inventor 靳凯陶杰王建华王浩郭训忠袁奇炜
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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