Rolling method of TC4 titanium alloy wide thick plate

A titanium alloy, wide-width technology, applied in metal rolling, metal rolling, manufacturing tools, etc., can solve problems such as adverse effects, increased energy consumption, and inability to meet the technical requirements of high-quality TC4 titanium alloy wide-width thick plates, etc. Achieve the effect of reducing energy consumption, reducing production costs, and good consistency of mechanical properties

Active Publication Date: 2013-07-17
WESTERN TITANIUM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of this method is that the deformation process can be completed under a relatively low rolling mill equipment load, but it inevitably increases the energy consumption of the entire rolling process; , the improvement of comprehensive performance, etc. will have adverse effects
[0005] Therefore, the existing conventional rolling method can no longer meet the technical requirements of high-quality TC4 titanium alloy wide thick plate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The rolling method of the present embodiment TC4 titanium alloy wide thick plate comprises the following steps:

[0025] Step 1. Place the TC4 titanium alloy slab with a thickness of 200mm, a width of 800mm, and a length of 1200mm in a roller hearth heating furnace for the first heat treatment. The temperature of the first heat treatment is higher than that of the β phase of the TC4 titanium alloy. The transition temperature is 50°C lower, and the time of the first heat treatment is 130 minutes;

[0026] Step 2, send the TC4 titanium alloy slab after the first heat treatment in step 1 into the 2800mm hot rolling mill along the length direction for the first rolling, and use an infrared thermometer to measure the TC4 during the first rolling process. The temperature of the titanium alloy slab is monitored to obtain a semi-finished slab with a thickness of 77.4mm and a width of 800mm; the first rolling is unidirectional rolling, and the first rolling is divided into 5 pas...

Embodiment 2

[0031] The rolling method of the present embodiment TC4 titanium alloy wide thick plate comprises the following steps:

[0032] Step 1. Place the TC4 titanium alloy slab with a thickness of 370mm and a length and width of 1200mm in a roller hearth heating furnace for the first heat treatment, the temperature of the first heat treatment is higher than the β phase transition of the TC4 titanium alloy The temperature is 60°C lower, and the time for the first heat treatment is 210 minutes;

[0033] Step 2. Send the TC4 titanium alloy slab after the first heat treatment in step 1 into a 2800mm hot rolling mill along the length or width direction for the first rolling, and use an infrared thermometer during the first rolling process The temperature of the TC4 titanium alloy slab is monitored to obtain a semi-finished slab with a thickness of 111mm and a width of 1200mm; the first rolling is unidirectional rolling, and the first rolling is divided into 6 passes to complete, each The...

Embodiment 3

[0038] The rolling method of the present embodiment TC4 titanium alloy wide thick plate comprises the following steps:

[0039] Step 1. Place a TC4 titanium alloy slab with a thickness of 400 mm, a width of 800 mm, and a length of 1000 mm in a roller hearth heating furnace for the first heat treatment. The temperature of the first heat treatment is higher than that of the β phase of the TC4 titanium alloy. The transformation temperature is 70°C lower, and the time of the first heat treatment is 240 minutes;

[0040] Step 2. Send the TC4 titanium alloy slab after the first heat treatment in step 1 into the 2800mm hot rolling mill along the length direction for the first rolling, and use an infrared thermometer to measure the TC4 titanium alloy slab in the first rolling process. The temperature of the alloy slab is monitored to obtain a semi-finished slab with a thickness of 200mm and a width of 800mm; the first rolling is unidirectional rolling, and the first rolling is divided...

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Abstract

The invention provides a rolling method of a TC4 titanium alloy wide thick plate. The method comprises the steps of: 1, heating a TC4 titanium alloy plate blank, of which the thickness is 200mm-400mm and the length and the width are both 800mm-1200mm, for the first time; 2, rolling the TC4 titanium alloy plate blank for the first time to get a semi-finished plate blank; 3, cooling the semi-finished plate blank to be below 400 DEG C with water, shearing and eliminating the surface scale, and then, heating for the second time; and 4, rolling for the second time to get the TC4 titanium alloy wide thick plate of which the thickness is 30mm-100mm and the width is 1000mm-2600mm. The rolling method is simple in technology, and can easily realize industrial large-scale volume production; and the TC4 titanium alloy wide thick plate prepared by the rolling method has uniform and fine tissue, and is excellent in comprehensive performance.

Description

technical field [0001] The invention belongs to the technical field of titanium alloy material preparation, and in particular relates to a rolling method of a TC4 titanium alloy wide and thick plate. Background technique [0002] With the development of technology in the fields of aerospace, shipbuilding, petroleum, chemical and nuclear energy industries, the demand for titanium alloy (Ti-6Al-4V) thick plates is increasing, and higher requirements are put forward for its quality. Small, uniform, and consistent mechanical properties. [0003] Controlled rolling is a very effective method for simultaneously increasing the strength and toughness of metallic materials. However, the thermal conductivity of titanium alloy is poor, the processing window is narrow, and the plasticity of the process is poor, and cracks are easy to occur on the surface and corners of the rolled piece; and the process of large deformation at a lower temperature will greatly increase the rolling equipm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B3/00B21B37/74B21B38/00
Inventor 谢英杰付文杰舒滢李辉王瑞琴高维娜周玉川王蕊宁王兴杨建朝张清吕利强徐志辉乔军伟范晗
Owner WESTERN TITANIUM TECH
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