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A kind of preparation method of arc tc4 titanium alloy slab

A titanium alloy and slab technology is applied in the field of preparation of arc-shaped TC4 titanium alloy slabs, which can solve the problems of low sheet rolling yield, unstable flaw detection, uneven structure, etc., and achieve less internal defects and improved flaw detection level. , the effect of uniform organization

Active Publication Date: 2022-07-08
WESTERN TITANIUM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the main problems of TC4 titanium alloy slabs by conventional forging are unstable flaw detection, uneven structure, and low yield of sheet rolling.

Method used

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  • A kind of preparation method of arc tc4 titanium alloy slab
  • A kind of preparation method of arc tc4 titanium alloy slab
  • A kind of preparation method of arc tc4 titanium alloy slab

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] This embodiment includes the following steps:

[0037] Step 1, carry out three vacuum consumable arc smelting with the TC4 titanium alloy consumable electrode, obtain the TC4 titanium alloy ingot rough billet, then cut off the riser and the ingot bottom of the TC4 titanium alloy ingot, remove the TC4 titanium alloy ingot skin pores, and grinding to remove surface defects to obtain TC4 titanium alloy ingots;

[0038]In step 2, the TC4 titanium alloy ingot obtained in step 1 is subjected to one-time open billet upsetting with a 5000T fast forging machine, and after air cooling to room temperature, surface defects are removed by grinding with a grinding wheel to obtain a first forging billet; In the process of billet upsetting and forging, the heating system is as follows: apply anti-oxidation coating to the surface of the TC4 titanium alloy ingot, then keep the temperature at 750 °C for 120 minutes, and then heat up to 150 °C above the β phase transition point of the TC4 ...

Embodiment 2

[0045] This embodiment includes the following steps:

[0046] Step 1, carry out three vacuum consumable arc smelting with the TC4 titanium alloy consumable electrode, obtain the TC4 titanium alloy ingot rough billet, then cut off the riser and the ingot bottom of the TC4 titanium alloy ingot, remove the TC4 titanium alloy ingot skin pores, and grinding to remove surface defects to obtain TC4 titanium alloy ingots;

[0047] In step 2, the TC4 titanium alloy ingot obtained in step 1 is subjected to one-time open billet upsetting with a 5000T fast forging machine, and after air cooling to room temperature, surface defects are removed by grinding with a grinding wheel to obtain a first forging billet; In the process of billet upsetting and forging, the heating system is as follows: apply anti-oxidation coating to the surface of the TC4 titanium alloy ingot, then keep it at 850 °C for 150 minutes, and then heat it up to 180 °C above the β phase transition point of the TC4 titanium ...

Embodiment 3

[0054] This embodiment includes the following steps:

[0055] Step 1, carry out three vacuum consumable arc smelting with the TC4 titanium alloy consumable electrode, obtain the TC4 titanium alloy ingot rough billet, then cut off the riser and the ingot bottom of the TC4 titanium alloy ingot, remove the TC4 titanium alloy ingot skin pores, and grinding to remove surface defects to obtain TC4 titanium alloy ingots;

[0056] In step 2, the TC4 titanium alloy ingot obtained in step 1 is subjected to one-time open billet upsetting with a 5000T fast forging machine, and after air cooling to room temperature, surface defects are removed by grinding with a grinding wheel to obtain a first forging billet; In the process of billet upsetting and forging, the heating system is: apply anti-oxidation coating to the surface of the TC4 titanium alloy ingot, then keep it at 800 ° C for 130 minutes, and then heat it up to 160 ° C above the β phase transition point of the TC4 titanium alloy for...

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Abstract

The invention discloses a preparation method of an arc-shaped TC4 titanium alloy slab. The method comprises: first, performing vacuum consumable arc smelting on a TC4 titanium alloy consumable electrode to obtain a TC4 titanium alloy ingot; second, opening a billet and upsetting The first forging blank is obtained after drawing and forging; 3. The second forging blank is obtained after upsetting and forging; 4. The third forging blank is obtained after upsetting and forging; Sixth, through planing and milling, grinding and polishing in sequence, an arc-shaped TC4 titanium alloy slab with an arc-shaped side surface is obtained. The invention combines the repeated upsetting and elongation processes in the upsetting and drawing forging process with the forming and forging process for generating radians, so that the original structure in the TC4 titanium alloy is sufficiently broken in turn, and the forming forging is used to generate the radians in the width direction, thereby realizing The preparation of arc-shaped TC4 titanium alloy slab, and its flaw detection level is significantly improved, the amount of cutting head of the arc-shaped TC4 titanium alloy slab after rolling is significantly reduced, and the product yield is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of titanium alloy slab preparation, in particular to a preparation method of an arc-shaped TC4 titanium alloy slab. Background technique [0002] Titanium and titanium alloys have the advantages of low density, high specific strength, and corrosion resistance. In recent years, my country's titanium industry has achieved rapid development, and the preparation and processing technology of titanium and titanium alloys has been continuously improved. Titanium and titanium alloy sheets are also widely used in aviation, aerospace, shipbuilding, petrochemical, electronics, medical, marine engineering, refrigeration engineering and other fields . TC4 titanium alloy is a medium-strength and high-damage-tolerant titanium alloy, which is especially suitable for the manufacture of key load-bearing components such as large overall frames, beams, and joints of aircraft, and is widely used in the aerospace field. [0003]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C37/02B21J5/00B21K29/00C22F1/18
CPCB21C37/02B21J5/002B21K29/00C22F1/183
Inventor 张智贠鹏飞李维李进元王兴杨佩
Owner WESTERN TITANIUM TECH
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