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Preparation method for TA15 titanium alloy thin strip

A titanium alloy and strip rolling technology, applied in metal rolling, metal rolling, metal processing equipment and other directions, can solve the problems of high cost, low yield, complicated processes, etc., and achieve high thickness and dimensional accuracy, rolling High force and good surface quality

Active Publication Date: 2021-11-30
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent "A Processing Method of Fine Grain Superplastic TA15 Titanium Alloy Sheet" with application number 201410235456.6 discloses a preparation method of TA15 titanium alloy sheet. TA15 titanium alloy plate of 0.5mm~1.4mm, this kind of preparation method is complicated, the yield is low, and the cost is high

Method used

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  • Preparation method for TA15 titanium alloy thin strip
  • Preparation method for TA15 titanium alloy thin strip
  • Preparation method for TA15 titanium alloy thin strip

Examples

Experimental program
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Effect test

Embodiment 1

[0035] Such as figure 1 As shown, this embodiment includes the following steps:

[0036] Step 1. Place the TA15 plate with a thickness of 2mm, a width of 500mm, and a length of 3000mm in a heating furnace, heat and hold it at 930°C for 30min, and then use a four-roll reversible hot rolling mill to carry out the first rolling pass. Roll to obtain the first rolling range TA15 strip; the thickness of the first rolling range TA15 strip is 1mm, the width is 500mm, and the length is 6000mm; the mass content of iron in the described TA15 plate is 0.12%, and the mass content of oxygen is 0.09%;

[0037] Step 2: Carry out two-end butt-welding of the 4 strips of the first rolling schedule TA15 obtained in step 1 by laser welding, and carry out grinding and polishing treatment on the welds to obtain 1 strip of the first rolling schedule TA15 welded strip material;

[0038] Step 3, carry out alkaline pickling to the first rolling process TA15 welded strip obtained in step 2, and then u...

Embodiment 2

[0049] Such as figure 1 As shown, this embodiment includes the following steps:

[0050] Step 1. Place the TA15 plate with a thickness of 3mm, a width of 550mm, and a length of 4000mm in a heating furnace, heat and hold it at 950°C for 60 minutes, and then use a four-roll reversible hot rolling mill to carry out the first rolling process single-chip reversible heat Roll to obtain the first rolling TA15 strip; the thickness of the first rolling TA15 strip is 1.2mm, the width is 550mm, and the length is 8000mm; the mass content of iron in the TA15 plate is 0.16%, and the mass content of oxygen 0.08%;

[0051] Step 2. Use laser welding to butt-weld the two ends of the 6 strips of the first rolling schedule TA15 obtained in step 1, and perform grinding and polishing on the welds to obtain 1 strip of the first rolling schedule TA15 welded strip material;

[0052] Step 3, carry out alkaline pickling to the first rolling process TA15 welded strip obtained in step 2, and then use a...

Embodiment 3

[0063] Such as figure 1 As shown, this embodiment includes the following steps:

[0064] Step 1. Place the TA15 plate with a thickness of 2.2mm, a width of 520mm, and a length of 3500mm in a heating furnace, heat and keep it at 930°C for 45min, and then use a four-roll reversible hot rolling mill for the first rolling process. Hot rolling to obtain the first rolling TA15 strip; the thickness of the first rolling TA15 strip is 1.1mm, the width is 520mm, and the length is 7000mm; the mass content of iron in the TA15 plate is 0.17%, and the mass content of oxygen The content is 0.12%;

[0065] Step 2. Use laser welding method to butt-weld the two ends of the 5 first rolling schedule TA15 strips obtained in step 1, and carry out grinding and polishing treatment on the weld seam to obtain 1 first rolling schedule TA15 welded strip material;

[0066] Step 3, carry out alkaline pickling to the first rolling process TA15 welded strip obtained in step 2, and then use a slitting slit...

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Abstract

The invention discloses a preparation method for a TA15 titanium alloy thin strip. The preparation method comprises the following steps of 1, carrying out single-strip reversible hot rolling in the first rolling process; 2, carrying out butt welding; 3, carrying out vacuum annealing heat treatment after acid-alkali washing and longitudinal shearing and splitting treatment; 4, carrying out reversible strip rolling in the second rolling process; 5, carrying out vacuum annealing heat treatment after cleaning and longitudinal shearing and splitting treatment; 6, carrying out reversible strip rolling in the third rolling process; 7, carrying out vacuum annealing heat treatment after cleaning and longitudinal shearing and splitting treatment; 8, carrying out reversible strip rolling in the fourth rolling process; 9, carrying out cleaning and longitudinal shearing and splitting treatment; and 10, carrying out annealing treatment so as to obtain the TA15 titanium alloy thin strip. According to the preparation method, a four-roller reversible hot rolling mill and a Sendzimir twenty-roller cold rolling mill are adopted, plate laser butt welding is combined, rolling of one hot rolling process and three cold rolling processes is carried out in sequence, and therefore the rolling efficiency is improved, the yield is increased, the cost is lowered, the number of the rolling processes is decreased, and the thickness precision of the TA15 titanium alloy thin strip with the thickness ranging from 0.3 mm to 0.6 mm is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of preparation of titanium alloy profiles, and in particular relates to a preparation method of TA15 titanium alloy thin strips. Background technique [0002] With the continuous progress of human aviation, the requirements for aviation vehicles are getting higher and higher. Aviation aircraft usually serve in harsh environments and work under extreme conditions such as ultra-high temperature, ultra-low temperature, vacuum, high stress, and high corrosion. This not only requires reliable structural design of the aircraft, but also requires the strength, hardness, high temperature resistance, and corrosion resistance of materials Ability is required. [0003] TA15 titanium alloy has high specific strength and high temperature strength at a service temperature of 450-500°C, and its comprehensive performance is slightly higher than that of TC4 titanium alloy. It can be used as a material for aircraft structura...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/24B21B3/00B21B15/00B21B45/02B21B27/02B21C37/02C22F1/02C22F1/18C21D9/52B23P15/00
CPCB21B1/24B21B3/00B21B15/00B21B15/0007B21B45/0275B21B27/021B21C37/02C22F1/02C22F1/183C21D9/52B23P15/00
Inventor 王国栋薛少博田云飞徐海龙苏艳妮张国霞王成长周立鹏郭学鹏舒滢吴欢
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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