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A kind of ta5 titanium alloy plate and its preparation method and application

A technology of titanium alloy plate and rolling direction, which is applied in metal rolling and other directions, can solve problems that have not been seen in domestic literature and patents, and achieve the effect of improving cold bending performance, simple equipment and process, and uniform structure

Active Publication Date: 2020-09-29
LUOYANG SUNRUI TI PRECISION CASTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main factors affecting the cold-bending performance of the plate are composition, inclusions, structure and surface defects, etc. At present, the research on the cold-bending performance of steel is relatively mature, such as the literature "The influence of slab quality and process on the cold-bending performance of hot-rolled coils" The effects of chemical composition, metallographic structure and rolling process on the cold-bending properties of steel plates have been studied; the patent with the publication number CN 107937815A has obtained steel plates with good cold-bending properties by controlling the composition, hot-rolling process and grain size, but Measures and methods for improving the cold bending properties of titanium alloys have not yet been found in domestic literature and patents

Method used

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  • A kind of ta5 titanium alloy plate and its preparation method and application
  • A kind of ta5 titanium alloy plate and its preparation method and application
  • A kind of ta5 titanium alloy plate and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (1) Billet rolling: the 140mm thick slab used in plate production is subjected to billet rolling to obtain a hot plate; wherein, the measured phase transition point of the ingot is 1010°C, and the heating temperature of the first fire is 980°C (T β -30°C), the heat preservation coefficient is 1.5±0.1min / mm, the rolling thickness is 25mm, the rolling deformation is 82%, and the final rolling temperature is 766°C;

[0039] (2) Surface treatment: the first-fired plate obtained in step (1) is ground to remove defects such as surface cracks and press-in, and the grinding direction is perpendicular to the first-fired rolling direction;

[0040] (3) Second fire rolling: the first fire plate after the surface treatment in step (2) is carried out two fire reverse rolling, and heating temperature is 930 ℃ (T β -80°C), heat preservation coefficient is 1.3±0.1min / mm, rolled to a thickness of 5mm, rolling deformation is 80%, and final rolling temperature is 682°C;

[0041] (4) Heat...

Embodiment 2

[0045] (1) Billet rolling: the 120mm thick slab used in plate production is subjected to billet rolling to obtain a hot plate; wherein, the measured phase transition point of the ingot is 1000°C, and the heating temperature of the first fire is 980°C (T β -20°C), heat preservation coefficient is 1.5±0.1min / mm, rolled to a thickness of 18mm, rolling deformation is 85%, and final rolling temperature is 752°C;

[0046] (2) Surface treatment: the first-fired plate obtained in step (1) is ground to remove defects such as surface cracks and press-in, and the grinding direction is perpendicular to the first-fired rolling direction;

[0047] (3) Second-fire rolling: carry out second-fire reversing rolling to the first-fire plate after the surface treatment in step (2), and the heating temperature is 920 ℃ (T β -80°C), heat preservation coefficient is 1.3±0.1min / mm, rolled to a thickness of 5mm, rolling deformation is 72%, and final rolling temperature is 608°C;

[0048] (4) Surface t...

Embodiment 3

[0054] (1) Billet rolling: the 120mm thick slab used in plate production is subjected to billet rolling to obtain a hot plate; wherein, the measured phase transition point of the ingot is 1000°C, and the heating temperature of the first fire is 980°C (T β -20°C), the heat preservation coefficient is 1.5±0.1min / mm, the rolling thickness is 18mm, the rolling deformation is 85%, and the final rolling temperature is 755°C;

[0055] (2) Surface treatment: the first-fired plate obtained in step (1) is ground to remove defects such as surface cracks and press-in, and the grinding direction is perpendicular to the first-fired rolling direction;

[0056] (3) two-fire rolling: carry out two-fire reversing rolling to the first-fire plate after the surface treatment in step (2), heating temperature is 950 ℃ (T β -50°C), heat preservation coefficient is 1.3±0.1min / mm, rolled to a thickness of 5mm, rolling deformation is 72%, and final rolling temperature is 620°C;

[0057] (4) Surface tre...

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Abstract

The invention belongs to the technical field of titanium alloy plate preparation, and in particular relates to a TA5 titanium alloy plate and its preparation method and application. The present invention optimizes and improves key processes such as billet rolling, surface treatment, second-fire rolling, surface treatment, third-fire rolling, heat treatment and surface treatment, and obtains a TA5 alloy plate with excellent performance. The structure of the plate is uniform, Tensile strength at room temperature R m ≥725Mpa, yield strength R p0.2 ≥650Mpa, A≥16%, bending core diameter D=3T, maximum cold bending angle α max =180°, the maximum cold bending angle is increased by 95-100°, which can be used to manufacture marine equipment, and the equipment and process of the present invention are simple, and mass production can be realized.

Description

technical field [0001] The invention belongs to the technical field of titanium alloy plate preparation, and in particular relates to a TA5 titanium alloy plate and its preparation method and application. Background technique [0002] TA5 titanium alloy is widely used in ship chimney skins, masts and other parts due to its excellent properties such as high strength and corrosion resistance. Cold roll forming is an important forming process in the processing and production of TA5 titanium alloy plate, and the cold bending performance is an important index to characterize the formability of the plate. According to the national standard GB / T 3621, for TA5 plates with a thickness of no more than 5mm, the bending core diameter D is required to be equal to 3 times the thickness of the plate, and no visible cracks appear on the surface of the 60° bending sample, but with the continuous upgrading of marine equipment, 60° is not enough To meet the needs of high-end equipment, it is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/18B21B3/00
CPCB21B3/00C22F1/183
Inventor 温方明郝晓博麻毅刘义辉李渤渤陈学伟聂胜东
Owner LUOYANG SUNRUI TI PRECISION CASTING
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