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Titanium sheet and method for manufacturing same

A thin plate, plate thickness technology

Inactive Publication Date: 2019-03-15
NIPPON STEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although Japanese Patent Application Laid-Open No. 2005-105387 (Patent Document 5) defines the upper limit of the ratio of the region having a crystal grain size of 1.25 times or more the minimum average grain size, it reduces the surface macroscopic texture to improve the surface texture, and No mention of improved processability

Method used

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  • Titanium sheet and method for manufacturing same
  • Titanium sheet and method for manufacturing same
  • Titanium sheet and method for manufacturing same

Examples

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Embodiment

[0083] Repeated cold rolling and annealing once for JIS1 pure titanium material to produce titanium thin plate. Table 1 shows the chemical composition and production conditions of each titanium thin plate.

[0084] In addition, in the table|surface, "prior cold rolling" means the cold rolling performed immediately before final cold rolling, and "initial cold rolling" means the cold rolling performed before this "previous cold rolling". "Prior annealing" means annealing performed immediately before final cold rolling, and "initial annealing" means intermediate annealing performed before this "preliminary annealing". An example where the annealing time is 1 minute is an example of simulated continuous annealing, and an example where the annealing time is 1 hour or more is an example of simulated batch annealing. For the annealing atmosphere, except No.23-26 (Comparative Examples 10, 11, Examples 14, 15), they are all carried out in Ar gas, No. 24, 25 are carried out in nitrogen...

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Abstract

Disclosed is a titanium sheet provided with a cured layer on the surface thereof, the titanium sheet having a thickness of 0.2 mm or less, wherein the titanium sheet has a chemical composition including, in terms of mass%, 0.001-0.08% Fe and 0.03-0.08% O, the crystal particle diameter thereof satisfying formulas (1) through (3), and the thickness of the cured layer being 0.1-2.0 [mu]m. The titanium sheet is provided with adequate strength and excellent workability at the same time. (1): dave > / = 2.5. (2): t / dave > / = 3.0. (3): t / dmax > / = 1.5. In formulas (1) through (3), t is the sheet thickness ([mu]m), dave is the average crystal particle diameter ([mu]m), and dmax is the maximum crystal particle diameter ([mu]m).

Description

technical field [0001] The present invention relates to a titanium thin plate and its manufacturing method. The titanium thin plate refers to, for example, a titanium plate having a plate thickness of 0.2 mm or less. Background technique [0002] Titanium has high specific strength and excellent corrosion resistance. It is used as a raw material for chemical equipment, construction, and a large number of other industries. In addition, it is used as a raw material for civilian products such as camera bodies, clocks, and sporting goods. use. Sheets with a thickness of 0.2 mm or less such as foil are used for audio components (speaker diaphragms, etc.), anti-corrosion films, sheets, etc. [0003] In general, there is a tendency that metallic materials are required to have high strength, and on this basis, workability is also required. Titanium is no exception. However, in general, workability decreases when strengthening is increased, so for titanium materials, attempts hav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22F1/02C22F1/18C22F1/00
CPCC22C14/00C22F1/00C22F1/02C22F1/18C22F1/183
Inventor 岳边秀德千田丽太松本启
Owner NIPPON STEEL CORP
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