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Machining method capable of controlling commercial pure titanium plate cold rolling texture

A technology of industrial pure titanium and a processing method, applied in the field of titanium alloy material preparation, can solve the problems of reducing the anisotropy of cold-rolled titanium coils, weakening the anisotropic effect of titanium coils, weakening the anisotropy of titanium coils, etc. Achieve the effect of good follow-up processing and forming performance, reducing heat treatment process and weakening anisotropy

Inactive Publication Date: 2016-05-11
XIANGTAN UNIV
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Problems solved by technology

[0004] Chinese patent CN102989768A discloses a processing method for effectively reducing the anisotropy of cold-rolled titanium coils. In the patent, recrystallization annealing is used to weaken the anisotropy of titanium coils. Anisotropy effect is not ideal
The patents CN101817015A and CN102021296A both recrystallize and anneal the titanium plate at different temperatures, and the process is cumbersome and the production cost is high
Chinese patent CN103230936A introduces the method of weakening the anisotropy of the titanium plate under hot rolling, and does not explain the anisotropy of the weakening of the titanium plate by cold rolling; Anisotropy of titanium plate, but not suitable for industrial production

Method used

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  • Machining method capable of controlling commercial pure titanium plate cold rolling texture
  • Machining method capable of controlling commercial pure titanium plate cold rolling texture
  • Machining method capable of controlling commercial pure titanium plate cold rolling texture

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Embodiment

[0028] The specific implementation steps are as follows:

[0029] (1) After hot rolling and annealing, the TA2 titanium plate with a thickness of 4mm and a width of 1250mm is subjected to cold rolling deformation on a multi-roll cold rolling mill, with a rolling deformation of 75% and a rolling speed of 25m / min; the thickness is obtained 1.0mm, width of 1250mm blooming slab, and conventional degreasing treatment for the blooming slab;

[0030] (2) Put the first-rolled slab coil with a thickness of 1.0mm, a width of 1250mm, and a titanium coil thickness of 162mm in a furnace at a temperature of 950°C for 81 minutes, then take it out of the furnace and air-cool it, and cycle twice;

[0031] (3) The TA2 titanium plate with a thickness of 1.0mm and a width of 1250mm after cyclic phase transformation is subjected to cold rolling deformation on a multi-roll cold rolling mill, the rolling deformation is 20%, and the rolling speed is 35m / min; the thickness is obtained Thin titanium p...

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Abstract

The invention relates to a machining method capable of controlling commercial pure titanium plate cold rolling texture and belongs to the technical field of preparation of a titanium alloy material. The method is used for weakening or even eliminating anisotropy of cold rolling industrial pure titanium plates. According to the invention, TA1, TA2 titanium plates with thickness of 4-8mm are adopted as raw material, are subjected to treatment including primary cold rolling, degreasing, two times of cyclic phase change, two times of cold rolling, degreasing, annealing and the like, and the obtained thin titanium plate reserves [110] || ND phase change fiber texture subjected to two times of alpha-beta-alpha cyclic phase change, so that the anisotropy of the plate is remarkably weakened or even eliminated. The thin titanium plate prepared by adopting the method overcomes the defect of the prior art that weakening of the anisotropy is not ideal by recrystallization annealing, and a thin titanium plate product is good in surface quality, simple in machining process, low in production cost and suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of titanium alloy material preparation, and in particular relates to a processing method for controlling the cold-rolled texture of an industrial pure titanium plate. Background technique [0002] In the chemical industry, aerospace, shipbuilding and other industrial fields, titanium and titanium alloy plates are more and more widely used, and they are mainly used as aircraft skins and ship shells. This is due to the high specific strength and excellent corrosion resistance of titanium and titanium alloys. As an α-titanium alloy, industrial pure titanium has excellent plasticity and excellent cold deformation ability, and various processing techniques can be used to prepare plates of required specifications. [0003] Since α-titanium has a close-packed hexagonal structure, the original chaotic crystal orientation is prone to preferred orientation of crystals during the rolling process, and then forms a text...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/18
CPCC22F1/183
Inventor 林建国郑理
Owner XIANGTAN UNIV
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