Machining method for improving plate shape of TA5-A titanium alloy wide medium-thickness plate

A processing method, TA5-A technology, applied in the field of sheet metal processing, can solve the problems of large influence of rolling temperature, narrow applicable temperature range, sensitive rolling temperature, etc., so as to reduce straightening resistance, improve efficiency and quality , the effect of reducing rolling passes

Active Publication Date: 2018-04-13
WESTERN TITANIUM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

TA5-A titanium alloy has a large deformation resistance during hot working, is very sensitive to rolling temperature, and has a narrow applicable temperature range, so the rolling method and rolling temperature will affect the shape of the TA5-A titanium alloy sheet
When the finished product width is less than 2000mm, the conventional rolling method has a good control over the shape of the TA5-A ti

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] This embodiment includes the following steps:

[0022] Step 1. Heat forging the TA5-A titanium alloy slab at 1050° C., then perform hot rolling for 3 times, and then straighten once; the thickness of the TA5-A titanium alloy slab after the heating forging is 200 mm;

[0023] Wherein the hot-rolling process described in the 1st fire time is: TA5-A titanium alloy slab is carried out 5 times of hot-rolling, obtains the TA5-A titanium alloy slab that thickness is 151mm, then on-line replenishment temperature 30min, carry out 5 more Pass hot rolling to obtain a TA5-A titanium alloy slab with a thickness of 100mm; the total reduction of the first hot rolling is 50%; the initial rolling temperature of the first hot rolling is 950°C, and the final rolling temperature is 800°C;

[0024] The process of the second fire hot rolling is: cutting the TA5-A titanium alloy slab after the first fire hot rolling, and then cutting the cut TA5-A titanium alloy slab relative to the first fi...

Embodiment 2

[0028] This embodiment includes the following steps:

[0029] Step 1. Heat forging the TA5-A titanium alloy slab at 1030° C., then perform hot rolling for 3 times, and then straighten once; the thickness of the TA5-A titanium alloy slab after the heating forging is 90 mm;

[0030] Wherein the hot-rolling process described in the 1st fire time is: carry out 7 pass hot-rolling to TA5-A titanium alloy slab, obtain the TA5-A titanium alloy slab that thickness is 60mm, then on-line replenish temperature 40min, carry out 7 more Pass hot rolling to obtain a TA5-A titanium alloy slab with a thickness of 40.43mm; the total reduction of the first hot rolling is 55%; the initial rolling temperature of the first hot rolling is 980°C, and the final rolling The temperature is 799°C;

[0031] The process of the second fire hot rolling is: cutting the TA5-A titanium alloy slab after the first fire hot rolling, and then cutting the cut TA5-A titanium alloy slab relative to the first fire hot ...

Embodiment 3

[0035] This embodiment includes the following steps:

[0036] Step 1. Heat forging the TA5-A titanium alloy slab at 1020° C., then perform hot rolling for 3 times, and then straighten once; the thickness of the TA5-A titanium alloy slab after the heating forging is 168 mm;

[0037]Wherein the hot-rolling process described in the 1st fire time is: carry out 6 pass hot-rolling with TA5-A titanium alloy slab, obtain the TA5-A titanium alloy slab that thickness is 120mm, then on-line replenish temperature 35min, carry out 6 more Pass hot rolling to obtain a TA5-A titanium alloy slab with a thickness of 90.85mm; the total reduction of the first hot rolling is 54%; the initial rolling temperature of the first hot rolling is 960°C, and the final rolling The temperature is 806°C;

[0038] The process of the second fire hot rolling is: cutting the TA5-A titanium alloy slab after the first fire hot rolling, and then cutting the cut TA5-A titanium alloy slab relative to the first fire h...

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Abstract

The invention discloses a machining method for improving a plate shape of a TA5-A titanium alloy wide medium-thickness plate. The method comprises the following steps: (1) a TA5-A titanium alloy plateblank is heated and forged at a temperature higher than a phase change point; then, the three-heating-number hot rolling is performed; and primary straightening is performed; (2) the TA5-A titanium alloy plate blank is heated and secondarily straightened in sequence after primary straightening to obtain a TA5-A titanium alloy wide and large medium-thickness plate with unevenness not more than 8 mm/m; and the size (thickness*width*length) of the TA5-A titanium alloy wide medium-thickness plate is (10-30 mm)*(2000-2500 mm)*(5000-7000 mm). The method combines high-temperature large deformation hot rolling with reversing hot rolling, reasonably distributes the rolling reduction and the rolling gates, improves the rolling efficiency, reduces the anisotropy of the plate blank, improves the nonuniform deformation phenomenon of the plate blank in the rolling process, effectively reduces the unevenness of the plate blank, and finally obtain the TA5-A titanium alloy wide medium-thickness platewith the excellent plate shape.

Description

technical field [0001] The invention belongs to the technical field of plate processing, and in particular relates to a processing method for improving the shape of a TA5-A titanium alloy wide medium-thick plate. Background technique [0002] Titanium alloy has good physical properties, machinability and seawater corrosion resistance, and is an ideal metal structure material for ships. The research and practical application level of marine titanium alloys in Russia, the United States, Japan and other countries are in the forefront of the world, and they have their own special marine titanium alloy systems, such as пT-XM series, Ti-Mo-Ni series and Ti-Al-V series, etc. . With the development of shipbuilding industry technology and the development of aircraft carrier manufacturing plans, the demand for titanium materials in my country's shipbuilding field is increasing day by day. At present, the amount of titanium alloy used in Chinese ships is relatively small compared wit...

Claims

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Application Information

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IPC IPC(8): B21C37/02C22F1/18
CPCB21C37/02C22F1/183
Inventor 戴毅谢文龙李鹏周玉川刘玉明王瑞琴谢英杰葛鹏邢秋丽唐进
Owner WESTERN TITANIUM TECH
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