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Manufacturing method of TA6 titanium alloy large-width thin plate

A titanium alloy and sheet technology, which is applied in the field of preparation of TA6 titanium alloy wide sheet, can solve the problems of unsuitable TA6 titanium alloy wide sheet, unstable product performance index, uneven structure, etc., so as to avoid surface or internal cracking , The effect of reducing internal defects and uniform organization

Active Publication Date: 2015-03-25
WESTERN TITANIUM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, it is very difficult to prepare high-quality TA6 wide sheet by traditional methods. The main disadvantage is that many cracks and other defects often appear during material processing, accompanied by uneven structure, unstable product performance indicators and yield. Low disadvantage, so the traditional processing method is not suitable for the preparation of TA6 titanium alloy wide sheet

Method used

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  • Manufacturing method of TA6 titanium alloy large-width thin plate
  • Manufacturing method of TA6 titanium alloy large-width thin plate
  • Manufacturing method of TA6 titanium alloy large-width thin plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The method for preparing TA6 titanium alloy wide sheet in this embodiment comprises the following steps:

[0037] Step 1. Explosively compound a layer of pure titanium plate on the upper and lower surfaces of the TA6 titanium alloy plate with a thickness of 180 mm, a width of 1000 mm, and a length of 1200 mm to obtain a composite plate; the thickness of the pure titanium plate is 1.0 mm, and the width is 1030 cm. The length is 1230cm, and the grade of the pure titanium plate is TA1;

[0038] Step 2. Place the composite plate described in step 1 in a pusher-type natural gas heating furnace, and heat it for 200 minutes at a temperature of 70° C. above the β phase transition point of the TA6 titanium alloy for the first heat treatment;

[0039] Step 3. Send the composite plate after the first heat treatment in step 1 into a 2800mm hot rolling mill, and carry out the first fire rolling under the condition of the final rolling temperature of 920°C to obtain a thickness of 45...

Embodiment 2

[0053] The method for preparing TA6 titanium alloy wide sheet in this embodiment comprises the following steps:

[0054] Step 1. Explosively compound a layer of pure titanium plate on the upper and lower surfaces of the TA6 titanium alloy plate with a thickness of 150mm, a width of 1200mm, and a length of 1200mm to obtain a composite plate; the thickness of the pure titanium plate is 0.8mm, and the width is 1220cm. The length is 1220cm, and the grade of the pure titanium plate is TA2;

[0055] Step 2, placing the composite plate described in step 1 in a pusher-type natural gas heating furnace, and performing the first heat treatment at a temperature of 50°C above the β phase transition point of the TA6 titanium alloy for 180 minutes;

[0056] Step 3. Send the composite plate after the first heat treatment in step 1 into a 2800mm hot rolling mill, and carry out the first fire rolling under the condition of the final rolling temperature of 910°C to obtain a thickness of 40mm and...

Embodiment 3

[0070] The method for preparing TA6 titanium alloy wide sheet in this embodiment comprises the following steps:

[0071] Step 1. Explosively compound a layer of pure titanium plate on the upper and lower surfaces of the TA6 titanium alloy plate with a thickness of 200mm, a width of 1200mm, and a length of 1500mm to obtain a composite plate; the thickness of the pure titanium plate is 1.0mm, and the width is 1225cm. The length is 1525cm, and the grade of the pure titanium plate is TA2;

[0072] Step 2. Place the composite plate described in step 1 in a pusher-type natural gas heating furnace, and carry out the first heat treatment at a temperature of 100°C above the β phase transition point of the TA6 titanium alloy for 240 minutes;

[0073] Step 3. Send the composite plate after the first heat treatment in step 1 into a 2800mm hot rolling mill, and perform the first fire rolling under the condition of the final rolling temperature of 910°C to obtain a thickness of 50mm and a w...

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Abstract

The invention discloses a manufacturing method of a TA6 titanium alloy large-width thin plate. The manufacturing method includes: 1, manufacturing a composite plate; 2, performing first heating; 3, subjecting the composite plate to first fire rolling to obtain a first semi-finished plate; 4, performing second heating; 5, subjecting the first semi-finished plate to second fire rolling to obtain a second semi-finished plate; 6, grinding before third heating; 7, subjecting the second semi-finished plate to third rolling to obtain a third semi-finished plate; 8, annealing the third semi-finished plate; 9, subjecting the third semi-finished plate to temperature rolling to obtain the TA6 titanium alloy large-width thin plate of 2-4mm in thickness and 1200-1500mm in width. By the manufacturing method, internal defects during processing of the TA6 titanium alloy large-width thin plate can be reduced effectively, and the TA6 titanium alloy large-width thin plate is high in stability, excellent in mechanical performance and high in yield. The manufacturing method is simple and easy in realizing of industrialized production.

Description

technical field [0001] The invention belongs to the technical field of titanium alloy plate processing, and in particular relates to a preparation method of a TA6 titanium alloy wide thin plate. Background technique [0002] TA6 (Ti-5Al) titanium alloy is an α-type titanium alloy with good weldability and corrosion resistance. It has medium strength and sufficient plasticity in the annealed state. The plate can be cold stamped and is suitable for temperatures below 400 ° C. It works in environments with corrosive media, and is mostly used for high-temperature structural components in the aviation sector, missile warhead skins, and structural parts of conventional weapons and equipment. But its plate width is narrow (generally cold-rolled plate width <750mm). [0003] In recent years, the demand for titanium for aviation in my country has gradually increased, especially for wide-width titanium alloy plates, so the consumption of wide-width titanium alloy plates will also ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00B21B1/38B23K20/08
CPCB21B1/38B21C37/02B23K20/08
Inventor 王瑞琴周玉川黄先明杨利陈均伟王云刘宇明张清邢秋丽杨永福舒滢
Owner WESTERN TITANIUM TECH
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