Current-aided flexible pressing roll stretch-forming method for titanium alloy and pressing roll stretch-forming device

A pressing roller device and technology of titanium alloy, applied in the field of pressing roller drawing device and current-assisted flexible pressing roller drawing titanium alloy, can solve the problem of unsuitability for mass production, low heating efficiency of pressing roller drawing titanium alloy, and production process. Low efficiency and other problems, to achieve the effect of improving heating efficiency and energy utilization, simple structure and perfect function

Inactive Publication Date: 2011-11-02
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 problem that the heating efficiency of the existing pressure roller stretching titanium alloy is low, which leads to the low efficiency of the entire production process and is not suitable for mass production, and then provides a method for current-assisted flexible pressure roller stretching titanium alloy and pressure roller stretching device

Method used

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  • Current-aided flexible pressing roll stretch-forming method for titanium alloy and pressing roll stretch-forming device
  • Current-aided flexible pressing roll stretch-forming method for titanium alloy and pressing roll stretch-forming device
  • Current-aided flexible pressing roll stretch-forming method for titanium alloy and pressing roll stretch-forming device

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specific Embodiment approach 1

[0016] Specific implementation mode one: combine figure 1 Describe this embodiment, a kind of current-assisted flexible pressure roller drawing method of titanium alloy of this embodiment is as follows:

[0017] Step 1: Select a current of 1000A-20000A according to the cross-sectional size and resistance data of the billet to be formed;

[0018] Step 2: Place the outer edge of the blank to be formed between the electrode 10 and the insulating plate 8, the insulating plate 8 is kept insulated from the blank to be formed, and pressurize the blank to be formed through the lifting cylinder 9, so that the electrode 10 is in contact with the blank to be formed and The insulating plates 8 are in contact with each other. At this time, power on and heat, and the heating rate is 5-20°C / s;

[0019] Step 3: Measure the temperature of the billet to be formed in real time by the infrared thermometer 11, and adjust the output current of the power supply in real time according to its tempera...

specific Embodiment approach 2

[0022] Specific implementation mode two: combination figure 1 and figure 2 Describe this embodiment mode, a kind of device of current-assisted flexible pressure roller drawing titanium alloy of this embodiment mode, it comprises drawing die 1, support platform 2, upper workbench 5-1, lower workbench 5-2, two groups Pressing roller device 3 and two sets of edge-holding devices 4, the drawing die 1 is fixedly installed on the support platform 2, the upper working table 5-1 is arranged above the drawing die 1, and the lower working table 5-2 is arranged on the drawing die On both sides of 1, the pressure roller device 3 is arranged in a straight line on the upper workbench 5-1, and the pressure roller device 3 is located outside the drawing die 1, and the edge pressing device 4 is arranged on the upper workbench 5-1 and the lower workbench 5-2, and the edge-holding device 4 is arranged on the outside of the pressing roller device 3, the current-assisted flexible pressing roller...

specific Embodiment approach 3

[0025] Specific implementation mode three: combination figure 1 The present embodiment is described. The insulating plate 8 of the present embodiment is made of mica sheet, ceramic or asbestos rubber plate. With such setting, the insulation effect is good. Other compositions and connections are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention discloses a current-aided flexible pressing roll stretch-forming method for titanium alloy and a pressing roll stretch-forming device, and relates to a pressing roll stretch-forming method for titanium alloy and a pressing roll stretch-forming device. The problems that the whole production process has low efficiency and is not suitable for batch production because of low heating efficiency of the conventional pressing roll stretch-forming titanium alloy. The pressing roll stretch-forming method comprises the following steps of: selecting current of 1,000 to 20,000 A; placing the outer edge of a blank to be formed between an electrode and an insulating plate, pressing and electrifying for heating, wherein the heating speed is 5 to 20 DEG C per second; measuring the temperature of the blank to be formed through an infrared temperature measuring instrument; after the temperature of the blank to be formed reaches 700 to 930 DEG C, compacting the edge of the blank to be formed by an edge compaction device; and applying pressure to the blank to be formed by a pressing roll device, and finally finishing a plastic forming process. A lift cylinder of the pressing roll stretch-forming device is vertically arranged on the ground, the insulating plate is fixedly arranged at the upper end of the lift cylinder, and the electrode ends of two electrodes are connected with a power supply through leads. The method and the device are used for pressing roll stretch-forming of the titanium alloy.

Description

technical field [0001] The invention relates to a method and a device for forming a titanium alloy with a pressure roller, in particular to a method for forming a titanium alloy with an electric current-assisted flexible pressure roller and a device for forming a titanium alloy with a pressure roller. Background technique [0002] Stretching is the main forming method for aircraft skin parts. The basic principle of traditional stretching is to apply a tangential tensile force when the sheet is bent, so that the stress distribution in the sheet section tends to be uniform, thereby reducing springback and improving the precision of the formed part. However, the use of traditional drawing machines to form three-dimensional curved parts has highlighted many shortcomings, such as production only relying on experience, lack of theoretical guidance, unstable forming quality, high scrap rate, difficult forming control of equipment, long debugging cycle, etc. Flexible roller stretch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D35/00B21D5/08B21D25/02B21D19/02
Inventor 王国峰刘博洋王长文郭晓云张凯锋杨波平
Owner HARBIN INST OF TECH
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