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Preparation method of titanium foil, titanium foil and titanium sound film made from the titanium foil

A technology of titanium foil and titanium material, which is applied in the field of loudspeakers, can solve the problems of poor ductility of titanium foil, achieve good ductility and reduce sound distortion rate

Active Publication Date: 2016-08-24
湖南湘投金天钛金属股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a preparation method of titanium foil, titanium foil and a titanium sound film made of the titanium foil, so as to solve the technical problem of poor ductility of titanium foil with a thickness of less than 0.5mm in the prior art

Method used

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  • Preparation method of titanium foil, titanium foil and titanium sound film made from the titanium foil
  • Preparation method of titanium foil, titanium foil and titanium sound film made from the titanium foil
  • Preparation method of titanium foil, titanium foil and titanium sound film made from the titanium foil

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preparation example Construction

[0025] The invention provides a method for preparing titanium foil. By performing pre-cold rolling on the titanium material blank, the thickness reduction of the titanium material blank is not greater than 20%, and the structure of titanium particles in the titanium material blank is optimized to further reduce the titanium foil for subsequent processes. It provides the basis for improving the thickness of the material and improving the ductility of the resulting titanium foil.

[0026] The process flow chart of the titanium foil preparation method provided by the invention can be found in figure 1 . The method comprises the following steps: subjecting the titanium blank to a first group of cold rolling treatments to form a titanium strip with a thickness of 0.4-0.6mm; and subjecting the titanium strip to a second group of cold rolling treatment to form a titanium foil.

[0027] The ductility of titanium foil is related to the thickness of titanium material used in direct rol...

Embodiment 1

[0051] 1) Select a TA1 hot-rolled coil with a thickness of 3.8mm. The content requirements of impurity elements in this hot-rolled coil are shown in Table 1.

[0052] Table 1 Contents of iron, oxygen and hydrogen elements in TA1 hot-rolled coils

[0053] element

Fe

O

H

content%

0.021

0.048

0.002

[0054] 2) The hot-rolled coil with a specification of 3.8*1050mm*C (coil thickness*coil width*coil length) is pickled by shot blasting (impacting the upper surface of the titanium coil with metal pellets to loosen the surface scale, and then using nitric acid The surface of the titanium coil is pickled with a mixed ratio of hydrofluoric acid, and the method of finally removing the black scale on the surface of the titanium coil is shot blasting pickling) After that, it is rolled by a wide multi-roll cold rolling mill, and the first cold rolling is to After the thickness of 3.04mm (80%), the first intermediate annealing and shot blasting pick...

Embodiment 2

[0059] 1) Select a TA1 hot-rolled coil with a thickness of 4.2 mm. The content requirements of impurity elements in this hot-rolled coil are shown in Table 2.

[0060] Table 2 Contents of iron, oxygen and hydrogen elements in TA1 hot-rolled coils

[0061] element

Fe

O

H

content%

0.018

0.036

0.001

[0062] 2) The hot-rolled coil with a specification of 4.2*1050mm*C (coil thickness*coil width*coil length) is shot blasted and pickled and rolled by a wide multi-roll cold rolling mill. The first cold rolling is to 3.5mm ( 83.3%) thickness, the first intermediate annealing and shot blasting pickling are carried out, the first intermediate annealing condition is: 650°C, and the annealing holding time is 30 hours. Then continue the second cold rolling to a thickness of 1.7mm (40%) and carry out the second intermediate annealing and pickling, and then the third cold rolling of the wide multi-roll mill to a titanium strip with a thickness of 0....

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Abstract

The invention provides a preparation method of titanium foil, titanium foil and a titanium sound film made of the titanium foil, wherein the preparation method of the titanium foil includes the following steps: the titanium material blank is processed by the first group of cold rolling to form a thickness of 0.4-0.6mm titanium strip; the titanium strip is subjected to the second set of cold-rolling treatment to form titanium foil, wherein the first set of cold-rolling treatment includes at least two cold-rolling treatments, and the titanium blank in the first cold-rolling treatment The decrease in thickness is no more than 20% of the thickness of the titanium blank. The preparation method of the titanium foil provided by the present invention is through pre-rolling, and the titanium material with a thickness of 3.8-4.2 mm is subjected to multiple cold rolling to obtain a titanium foil whose thickness is reduced to 0.01-0.05 mm. By selecting a thicker titanium material Performing cold rolling increases the elongation of the titanium strip to more than 36%. The titanium foil has a high elongation rate, is easy to form when preparing a speaker sound film, and can also improve the high-pitch performance effect of the speaker and reduce the sound distortion rate.

Description

technical field [0001] The invention relates to the field of loudspeakers, and in particular, relates to a method for preparing titanium foil and the titanium foil thereof. Another aspect of the invention also provides a titanium sound membrane made of the titanium foil prepared by the method. Background technique [0002] High-purity titanium material has good plasticity, punchability and hardness and can be used as a sound film for high-end audio. The titanium metal material used as the sound film needs to be processed into a titanium foil with a thickness of less than 0.05mm. The titanium foil sound film has good rigidity and is not easy to deform. It can reduce the distortion of the sound equipment and improve the detailed analysis of the sound when used in the sound system. [0003] In the prior art, the titanium billet is first hot-rolled and uncoiled, then cold-rolled by a multi-roll mill, and then vacuum annealed at 600-750°C, and then continue to be hot-rolled, ann...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/18H04R31/00
Inventor 张孝军向午渊刘勇刘正乔王浩苏杏
Owner 湖南湘投金天钛金属股份有限公司
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