A rolling method for weakening the anisotropy of tc4 titanium alloy sheet

An anisotropic, titanium alloy technology, applied in metal rolling and other directions, can solve the problems of long production process, serious edge cracking, low yield and other problems, and achieve good surface quality, small anisotropy, and degree of fragmentation. Good results

Active Publication Date: 2019-09-27
重庆大江杰信锻造有限公司
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There are two types of TC4 titanium alloy plate rolling, hot rolling and cold rolling. Due to its α+β two-phase structure, the rolled plate has strong anisotropy and serious edge cracking, resulting in low yield and high product cost.
The raw materials of TC4 titanium alloy rolled plates are basically round ingots obtained by smelting in a vacuum consumable arc melting furnace for 3 to 4 times, and then forged into square ingots or flat ingots, and finally cold rolled or rolled. Plates are obtained by hot rolling, the production process is long, the process is many, and the energy consumption is large, resulting in high cost of the final plate, which limits its wide application

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A rolling method for weakening the anisotropy of tc4 titanium alloy sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A rolling method to weaken the anisotropy of TC4 titanium alloy sheet, the forming process is as figure 1 As shown, the specific steps are as follows:

[0024] (1) The material of this example is Ti-6Al-4V (TC4) titanium alloy. The phase transition point of TC4 titanium alloy was measured, and the phase transition point temperature of the alloy was measured to be 980° C. by differential scanning calorimetry (DSC).

[0025] (2) Heat the cuboid TC4 titanium alloy ingot to 1020°C and keep it warm for 20 minutes.

[0026] (3) The heated cuboid ingot is subjected to two-fire hot rolling, and the first fire rolling process is: the rolling speed is 1.4m / s

[0027] , the cumulative rolling pass is 10 times, and the cumulative deformation is about 72%. First, the first pass is rolled along the length direction, and then the billet is rotated 90° along the length direction and reversely rolled for the second pass, namely Width and thickness commutation, such as figure 1 As sho...

Embodiment 2

[0034] A rolling method to weaken the anisotropy of TC4 titanium alloy sheet, the forming process is as figure 1 As shown, the specific steps are as follows:

[0035] (1) The material of this example is Ti-6Al-4V (TC4) titanium alloy. The phase transition point of TC4 titanium alloy was measured, and the phase transition point temperature of the alloy was measured to be 980° C. by differential scanning calorimetry (DSC).

[0036] (2) Heat the cuboid TC4 titanium alloy ingot to 990°C and keep it warm for 30 minutes.

[0037] (3) The heated cuboid ingot is subjected to two-fire hot rolling, and the first fire rolling process is: the rolling speed is 1.25m / s

[0038] , the cumulative rolling pass is 9 times, and the cumulative deformation is about 73%; firstly, the first pass is rolled along the length direction, and then the billet is rotated 90° along the length direction and reversely rolled for the second pass (ie Width and thickness reversing), repeat this process once, a ...

Embodiment 3

[0045] A rolling method to weaken the anisotropy of TC4 titanium alloy sheet, the forming process is as figure 1 As shown, the specific steps are as follows:

[0046] (1) The material of this example is Ti-6Al-4V (TC4) titanium alloy. The phase transition point of TC4 titanium alloy was measured, and the phase transition point temperature of the alloy was measured to be 980° C. by differential scanning calorimetry (DSC).

[0047] (2) Heat the cuboid TC4 titanium alloy ingot to 1050°C and keep it warm for 25 minutes.

[0048] (3) The heated cuboid ingot is subjected to two-fire hot rolling. The first fire rolling process is as follows: the rolling speed is 1.1m / s, the cumulative rolling passes are 8 times, and the cumulative deformation is about 67%. First roll the first pass along the length direction, then rotate the billet 90° along the length direction and roll the second pass in reverse (ie width and thickness reversal), repeat this process once, and roll 5 passes in tota...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a rolling method for weakening the anisotropy of a TC4 titanium alloy plate, and belongs to the field of plastic forming. According to the method combining multi-directional rolling and heat treatment, on one hand, the anisotropy of the TC4 titanium alloy plate can be reduced or weakened, so that the uniformity of the tissue performance is improved, and the high-quality TC4titanium alloy plate is obtained; and on the other hand, the technological process is shortened, the energy consumption is reduced, the manufacturing cost is reduced, finally the TC4 titanium alloy plate with high quality and low cost is obtained, and then the application field of the TC4 titanium alloy plate is enlarged.

Description

technical field [0001] The invention relates to a rolling method for weakening the anisotropy of TC4 titanium alloy plates, which belongs to the field of plastic forming. Background technique [0002] Roll forming technology is a material processing method that uses the friction force of the rotating roll to drag the rolled piece into the roll, and at the same time relies on the pressure exerted by the roll to make the rolled piece compress and deform between the rolls. After the rolled piece is rolled, not only the shape and size of the rolled piece are changed, but also the structure and performance of the rolled piece are also improved and improved. It is mainly used to produce profiles, plates, and pipes. [0003] TC4 titanium alloy is a typical "α + β" type two-phase titanium alloy, its nominal composition is Ti-6Al-4V, the α / β phase transition temperature is 980 ° C, a small amount of Al (α stable element) can improve the alloy The strength and heat resistance of the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): B21B1/06B21B3/00
Inventor 肖寒赵帅谭聪黄海广周荣锋蒋业华
Owner 重庆大江杰信锻造有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap