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Device and method for hot forming of titanium alloy corrugated pipe through current assistance

A corrugated pipe and titanium alloy technology, which is applied in the field of corrugated pipe thermoforming devices, can solve the problems of high cost, difficulty in manufacturing titanium alloy corrugated pipes, and low production efficiency, and achieve light oxidation, avoid energy loss, and short heating time Effect

Active Publication Date: 2015-04-22
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of existing titanium alloy bellows manufacturing difficulties, high cost and low production efficiency, and further provide a current-assisted titanium alloy bellows thermoforming device and method

Method used

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  • Device and method for hot forming of titanium alloy corrugated pipe through current assistance
  • Device and method for hot forming of titanium alloy corrugated pipe through current assistance
  • Device and method for hot forming of titanium alloy corrugated pipe through current assistance

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specific Embodiment approach 1

[0024] Specific implementation mode one: combine figure 1 , figure 2 and image 3 This embodiment is described. This embodiment includes a press 1, a current heating system and an internal pressurization system. The current heating system includes two electrodes 3, a wire 4 and a low-voltage high-current power supply 5. Connected to the positive and negative electrodes of the electrode 3, the titanium alloy bellows thermoforming device also includes a forming die 2, and the forming die 2 includes an upper end cover 2-1, a ring metal upper die 2-2, and a ring metal lower die 2- 6. Lower mold base 2-9, ceramic upper mold 2-12, ceramic lower mold 2-14, multiple ring metal intermediate molds 2-3, multiple first guide rods 2-4, multiple support sleeves 2 -5, multiple second guide rods 2-7, multiple guide rod connection assemblies 2-8, multiple guide pillars 2-10, multiple support cylinders 2-11 and multiple ceramic middle molds 2-13, upper end cover An electrode 3 is respective...

specific Embodiment approach 2

[0027] Specific implementation mode two: combination figure 2 and image 3 Describe this embodiment, the guide rod connection assembly 2-8 of this embodiment includes a stud 2-8-1, a spring washer 2-8-2 and a nut 2-8-3, and the stud 2-8-1 is screwed on a circle Ring metal upper die 2-2, multiple ring metal middle dies 2-3, and nut 2-8-3 are screwed on the stud 2-8-1 through spring washer 2-8-2. With such arrangement, multiple first guide rods 2-4 and multiple second guide rods 2-7 can be firmly fixed on the ring metal upper mold 2-2 and multiple ring metal middle molds 2-3. Other compositions and connections are the same as in the first embodiment.

specific Embodiment approach 3

[0028] Specific implementation mode three: combination figure 2 To describe this embodiment, in this embodiment, the length of the first guide rod 2-4 is greater than the length of the second guide rod 2-7. With such arrangement, the first guide rod 2-4 can realize the guide of the whole mold, and the second guide post 2-7 plays the role of auxiliary guide while playing the role of positioning, so that the guide precision is high. Other compositions and connections are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention discloses a device and method for hot forming of a titanium alloy corrugated pipe through current assistance, and relates to a device and method for hot forming of a corrugated pipe. The device and method for hot forming of the titanium alloy corrugated pipe through current assistance solve the problem that an existing titanium alloy corrugated pipe is difficult to manufacture, and high in cost and low in production efficiency. According to the device, the positive pole and the negative pole of an electrode (3) tightly sleeve the upper end and the lower end of a tube blank (10), a low-voltage high-current power source (5) is connected with the positive pole and the negative pole of the electrode (3) through a wire (4), a gas cylinder (7) is connected with a gas guide pipe (11) on the tube blank (10) through a gas pipe (6), and a forming die (2) is placed on a working platform of a press machine (1). The method comprises the steps that the first step, the tube blank (10) is manufactured; the second step, die setting is conducted; the third step, device installation is conducted; the fourth step, the corrugated pipe is formed; the fifth step, discharging is conducted; the sixth step, post-processing is conducted. The device and method are used for manufacturing the titanium alloy corrugated pipe.

Description

technical field [0001] The invention relates to a corrugated pipe thermoforming device and method, in particular to a current-assisted titanium alloy corrugated pipe thermoforming device and method, which are suitable for forming titanium alloy corrugated pipes with a diameter of 100-500 mm. 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 fields have been widely used. With the development of science and technology, it is not uncommon for large-size, high-parameter bellows to be used in engineering. The main material for manufacturing bellows is st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D15/06B21D37/10B21D37/16
Inventor 王国峰赵淘杜志豪刘小林杨默赵相禹
Owner HARBIN INST OF TECH
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