Current-assisted titanium alloy bellows hot-forming tool and method

A corrugated tube and titanium alloy technology, applied in the field of corrugated tube thermoforming molds, can solve problems such as heat loss, achieve the effects of improving plastic deformation capacity, uniform temperature distribution, improving energy utilization and heating efficiency

Inactive Publication Date: 2014-01-22
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the technical problem of heat loss caused by integral heating in

Method used

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  • Current-assisted titanium alloy bellows hot-forming tool and method
  • Current-assisted titanium alloy bellows hot-forming tool and method

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Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0022] Specific Embodiment 1: In this embodiment, the current-assisted titanium alloy bellows thermoforming mold includes an argon gas cylinder 1, a gas pipe 2, a right axial loading shaft 3-2, a left axial loading shaft 3-1, and a left axial loading device for fixing Plate 4-1, right axial loading device fixing plate 4-2, left cylinder 5-1, right cylinder 5-2, left axial loading sleeve 6-1, right axial loading sleeve 6-2, left sleeve Tube support plate 7-1, right sleeve support plate 7-2, first workbench 8-1, second workbench 8-2, third workbench 8-3, fourth workbench 8-4, fifth workbench Workbench 8-5, sixth workbench 8-6, left positioning plate 9-1, right positioning plate 9-2, first positioning nut 10-1, second positioning nut 10-2, third positioning nut 10- 3. The third and fourth positioning nuts 10-4, the first positioning stud 11-1, the second positioning stud 11-2, the third positioning stud 11-3, the fourth positioning stud 11-4, the left seal Device 12-1, right sea...

specific Embodiment approach 2

[0029] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the left sealing device 12-1 and the sealing device 12-2 include a rubber ring 17, a fastening ring 18, a copper plug ring 19, a nut 20 and a bolt 21 , which is characterized in that the bolt 21 is screwed with the nut 20, two rubber rings 17 are arranged on the surface of the inner hole of the fastening ring 18, the copper plug ring 19 is screwed on the inner end of the bolt 21, and the fastening ring 18 is located on the copper plug ring 19 and nut 20 between. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0030] Specific implementation mode three: In this implementation mode, the current-assisted hot forming method of titanium alloy bellows is as follows:

[0031] The first ceramic mold 16-1, the second ceramic mold 16-2, and the third ceramic mold 16-3 are embedded in the first metal mold frame 15-1, the second metal mold frame 15-2, and the third metal mold frame 15 In -3, the metal mold frame 15-1, the second metal mold frame 15-2, and the third metal mold frame 15-3 have cavities, the diameter of which is the same as that of the pipe blank 14, and the first ceramic Surfaces where the mold 16-1, the second ceramic mold 16-2, and the third ceramic mold 16-3 are in contact with the first metal mold frame 15-1, the second metal mold frame 15-2, and the third metal mold frame 15-3 Boron nitride is coated on the top after being polished, and the tube blank 14 passes through the cavities of the first ceramic mold 16-1, the second ceramic mold 16-2, and the third ceramic mold 16-3,...

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Abstract

The invention relates to a current-assisted titanium alloy bellows hot-forming die and method, relates to a bellows hot-forming tool and method and solves the technical problem that integral heating in the plastic hot-forming process causes heat loss. The tool comprises an argon cylinder, a gas pipe, an axial loading shaft, an axial loading device fixing plate, a gas cylinder, an axial loading sleeve, a sleeve support plate, a bench, a positioning plate, positioning nuts, positioning studs, a sealing device, an electrifying device, a metal die frame, and a ceramic die. The method includes: keeping the temperature of 600-900 DEG C and inner air pressure 0.1-0.5MPa of a pipe billet for 100-250s, assembling the die, keeping the inner air pressure 2.0-3.0MPa of the pipe billet for 200-400s, powering off, relieving air pressure, and cooling to obtain a titanium alloy bellows. The die and method belonging to the field of bellows production have the advantages that heat loss consumed for the die during integral heating in the traditional plastic hot-forming process is avoided.

Description

technical field [0001] The invention relates to a bellows thermoforming mold and method. Background technique [0002] The corrugated expansion joint has the functions of displacement compensation, vibration reduction and noise reduction, and sealing. It is one of the key components for thermal compensation of equipment and pipe networks in modern industrial production. The bellows is the basic component of the expansion joint. It has been used in chemical industry, petroleum , Electric power, metallurgy, shipbuilding, nuclear energy, aerospace and other industrial sectors have been widely used. With the development of science and technology, large-scale, high-parameter expansion joints are widely used in engineering, especially in recent years, the domestic expansion joint manufacturing technology has been continuously improved and the contents of pressure vessel standards and specifications have undergone major changes. Expansion joint manufacturing has formed an industry...

Claims

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Application Information

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IPC IPC(8): B21D26/047B21D26/033B21D26/045
Inventor 王国峰刘淑芬孙超曹凤超李优吴雪松
Owner HARBIN INST OF TECH
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