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Hot shaping method of large-specification titanium plate

A large-scale, heat-shaping technology, applied in the field of heat treatment of metal materials, can solve the problems of poor flatness, difficulty in reshaping, and high cost of sheet materials, and achieve high production efficiency, low requirements for annealing equipment and vacuum, and reprocessing The effect of simple shaping process

Active Publication Date: 2013-01-09
WESTERN METAL MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Simple annealing + heavy object pressurization + atmospheric stress relief annealing, it is understood that the principle of this method is basically the same as that of vacuum creep, and the unevenness of the plate produced by it can also meet the needs of customers, but it is different from vacuum creep correction It is the heat-resistant cast steel plate with high flatness, thick thickness and high price that is used to correct the shape and pressurize the titanium plate. The cast steel plate will be deformed during repeated use and the flatness will be poor. The steel plate is thick and heavy, and it is difficult to reshape it, so the cost of the plate produced by this method is also high

Method used

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  • Hot shaping method of large-specification titanium plate

Examples

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Effect test

Embodiment 1

[0024] The thermal shaping method of the large-scale titanium sheet material of the present embodiment comprises the following steps:

[0025] Step 1. Place a piece of carbon steel material, 40mm thick and unevenness ≤ 3mm / m horizontally on the material tray in the pit annealing furnace, and then place 25 sheets with a thickness of 10mm and a width of 2100mm. Large-scale TA2 pure titanium plates with a length of 6000mm and an unevenness of 10mm / m to 26mm / m are neatly stacked on the correcting base plate, and an isolation backing plate is laid between the large-scale TA2 pure titanium plates during the stacking process , the specific process is: first stack 10 large-size TA2 pure titanium sheets to a thickness of 100mm, then lay a layer of isolation pad on the top layer of the stacked TA2 pure titanium sheets, and then stack 10 large-size TA2 pure titanium sheets in turn , one layer of isolation pads and 5 large-size TA2 pure titanium sheets, the stacking thickness of the large...

Embodiment 2

[0033] The thermal shaping method of the large-scale titanium sheet material of the present embodiment comprises the following steps:

[0034]Step 1. Horizontally place a piece of carbon steel on the tray in the trolley-type annealing furnace, with a thickness of 50mm and an unevenness ≤ 3mm / m, and then place 50 sheets with a thickness of 5mm and a width of 2500mm. The large-scale TC4 titanium alloy plates with a length of 7000mm and an unevenness of 20mm / m to 35mm / m are neatly stacked on the correcting base plate, and an isolation backing plate is laid between the large-scale TC4 titanium alloy plates during the stacking process , the specific process is: first stack 10 large-size TC4 titanium alloy plates to a thickness of 50mm, and then lay a layer of isolation pad on the top layer of the stacked TC4 titanium alloy plates, and then continue to stack large-scale TC4 titanium alloy plates and isolate Backing plate, the stacking thickness of large-size TC4 titanium alloy plate...

Embodiment 3

[0042] The thermal shaping method of the large-scale titanium sheet material of the present embodiment comprises the following steps:

[0043] Step 1. Place a piece of carbon steel material, 60mm thick and unevenness ≤ 3mm / m horizontally on the material tray in the pit annealing furnace, and then place 25 sheets with a thickness of 4mm and a width of 2000mm. Large-scale TA1 pure titanium plates with a length of 8000mm and an unevenness of 20mm / m to 29mm / m are neatly stacked on the correcting base plate. During the stacking process, an isolation backing plate is laid between the large-scale TA1 pure titanium plates , the specific process is: first stack 13 large-size TA1 pure titanium plates to a thickness of 52mm, then lay a layer of isolation pad on the top layer of the stacked TA1 pure titanium plate, and then continue to stack 12 sheets on the top of the isolation pad. Large size TA1 pure titanium plate, the material of the isolation backing plate is carbon steel, the thick...

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Abstract

The invention provides a hot shaping method of a large-specification titanium plate. The hot shaping method includes the following steps of firstly, placing a shaping base plate in an annealing furnace and stacking the large-specification titanium plate on the shaping base plate; secondly, laying a shaping pressing plate at the top of the titanium plate; and thirdly, performing hot shaping treatment by using a gradient heating and thermal insulation process to obtain the large-specification titanium plate with unevenness smaller than or equal to 3mm / m. According to the hot shaping method of the large-specification titanium plate, the shaping base plate, the shaping pressing plate and a separation backing plate which are cheap and are made of carbon steel are used, so that the requirement of shaping strength required during a shaping process can be satisfied, the titanium plate is simple in re-shaping and easy to process when the plate is deformed during a repeat usage process, the service life is prolonged, and simultaneously, production costs are greatly reduced; and by means of a gradient heating mechanism and a cooling mode, full release of stress of the surface and the inside of the large-specification titanium plate is facilitated, mechanical properties and process properties of the plate are guaranteed, and simultaneously, the shape of the leveled plate can be well kept in follow-up processing.

Description

technical field [0001] The invention belongs to the technical field of heat treatment of metal materials, and in particular relates to a thermal shape correction method for large-scale titanium plates. Background technique [0002] Titanium has the advantages of light weight, high strength, and corrosion resistance. It is widely used in aviation, aerospace, navigation, metallurgy, chemical industry, petrochemical, medical, sports equipment and other fields. It has long been a research hotspot in the field of materials. With the continuous development of my country's national economy, the consumption of titanium plates is constantly increasing, especially large-scale titanium plates (large-scale titanium plates in this field refer to titanium plates with a width of not less than 1.2m and a length of not less than 4m, large-scale titanium plates in the present invention Titanium sheet refers to the titanium sheet with a thickness of 4mm-50mm, a width of 2000mm-2600mm, and a len...

Claims

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Application Information

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IPC IPC(8): B21D1/00
Inventor 王瑞琴张清倪再鹏邓家彬付文杰谢文龙吴晓东吕利强
Owner WESTERN METAL MATERIAL
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