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Titanium alloy Ti-62222s and preparation method thereof

A technology of ti-62222s and titanium alloy, which is applied in the field of titanium alloy and its preparation, can solve the problems of inability to meet diversified requirements, fluctuating high and low melting current, and difficult control, etc., and achieves convenience for subsequent processing, low cost, The effect of improving the yield of processed products

Inactive Publication Date: 2009-12-09
忠世高新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the continuous development of titanium alloys, there is an increasing demand for high-strength and high-toughness titanium alloys. In the preparation process of a titanium alloy Ti-62222s, the intermediate alloy is directly added to titanium for smelting, avoiding the simple addition of metal tin separately. And the cumbersomeness of metal chromium avoids the phenomenon that the melting current applied fluctuates up and down due to the inconsistency of the melting point of the metal element, which is not easy to control. In this way, the preparation and smelting process of titanium alloy is stable, and the composition is not easy to segregate; the existing one An aluminum-titanium rare earth compound master alloy smelted with titanium alloy (patent application number 94112628.5), which has better oxidation resistance, but its cost is higher, and its adaptability is narrow (for the smelting of pure rare earth titanium alloy), It cannot meet the diversified requirements of modern titanium alloy production

Method used

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  • Titanium alloy Ti-62222s and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Concrete preparation process is as follows:

[0021] 1. Prepare the alloy package: spread the raw materials AlSn50, AlCr50, AlMo60, zirconium sponge, industrial silicon, and aluminum beans in layers of aluminum foil with predetermined specifications, seal them tightly, store and transport required level;

[0022] 2. Electrode preparation: Each electrode weighs 18kg to 25kg. Divide the titanium sponge into 4 parts and add 3 packages of alloy. After each layer of titanium sponge is spread out, place 1 package of alloy package horizontally. By analogy, extrude the electrode;

[0023] 3. Electrode drying: The extruded electrodes are mainly placed in the drying room for drying, and the drying temperature is 50-60°C to prevent the electrodes from being damp;

[0024] 4. The extruded electrodes are aligned horizontally and welded vertically. The solder joints must be firm and must not be oxidized into blue;

[0025] 5. Furnace loading: use the starting crane to load the weld...

Embodiment 2

[0031] Concrete preparation process is as follows:

[0032] 1. Prepare the alloy package: spread the raw materials AlSn50, AlCr50, AlMo60, zirconium sponge, industrial silicon, and aluminum beans layer by layer in the aluminum foil of predetermined specifications, seal it tightly, store and transport required level;

[0033] 2. Preparation of electrodes: Divide the titanium sponge into 6 parts with a weight of 38kg to 50kg for each electrode, add 5 packages of alloy bags, after each layer of titanium sponge is spread out, place 1 package of alloy bags horizontally, and so on, extrude the electrodes;

[0034] 3. Electrode drying: The extruded electrodes should be dried in a drying room at a temperature of 160-200°C to prevent the electrodes from being damp.

[0035] 4. The extruded electrodes are aligned horizontally and welded vertically. The solder joints must be firm and must not be oxidized into blue.

[0036] 5. Furnace loading: use the starting crane to load the welded ...

Embodiment 3

[0042] Concrete preparation process is as follows:

[0043] 1. Prepare the alloy package: spread the raw materials AlSn50, AlCr50, AlMo60, zirconium sponge, industrial silicon, and aluminum beans in layers of aluminum foil with predetermined specifications, seal them tightly, store and transport required level.

[0044] 2. Electrode preparation: Each electrode weighs 18kg to 25kg. Divide the titanium sponge into 4 parts and add 3 packages of alloy. After each layer of titanium sponge is spread out, place 1 package of alloy package horizontally. By analogy, extrude the electrode;

[0045] 3. Electrode drying: The extruded electrodes should be dried in a drying room at a temperature of 80-120°C to prevent the electrodes from being damp.

[0046] 4. The extruded electrodes are aligned horizontally and welded vertically. The solder joints must be firm and must not be oxidized into blue.

[0047] 5. Furnace loading: use the starting crane to load the welded electrodes into the fu...

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Abstract

The invention relates to a titanium alloy, in particular to a titanium alloy and a preparation method thereof. The titanium alloy comprises the following components in percentage by weight: balanced of Ti, 5.3-6.10 percent of Al, 1.80-2.20 percent of Sn, 1.80-2.20 percent of Zr, 1.80-2.20 percent of Mo, 1.80-2.20 percent of Cr, 0.13-0.19 percent of Si, lower than 0.08 percent of Fe, lower than 0.08 percent of C, not more than 0.03 percent of N, not more than 0.015 percent of H and not more than 0.12 percent of O; the smelting technical parameters are as follows: the vacuum degree before smelting is lower than 3Pa, the leakage rate within 3 min is equal to or lower than 3Pa, the smelting vacuum degree is equal to or lower than 3Pa, and the smelting current and the feeding current range from 2kA to 10kA; and the preparation method comprises the following steps: firstly, preparing the intermediate alloys AlSn50, AlCr50 and AlMo60, and then performing electrode preparation, electrode baking, electrode welding, furnace loading, smelting, cooling, furnace tapping, turning and sampling analysis by budgeting. The invention has the advantages that the refined grains of the alloy for silicon are added in, the processing and the forging are easy, the tensile strength in the performances of a plate processed by the alloy reaches 1100-1300MPa, the elongation rate reaches 12-20 percent, and meanwhile, the Beta phase can be stabilized.

Description

technical field [0001] The invention relates to a titanium alloy and its preparation, in particular to a Ti-62222s titanium alloy and its preparation method. Background technique [0002] With the continuous development of titanium alloys, there is an increasing demand for high-strength and high-toughness titanium alloys. In the preparation process of a titanium alloy Ti-62222s, the intermediate alloy is directly added to titanium for smelting, avoiding the simple addition of metal tin separately. And the cumbersomeness of metal chromium avoids the phenomenon that the melting current applied fluctuates up and down due to the inconsistency of the melting point of the metal element, which is not easy to control. In this way, the preparation and smelting process of titanium alloy is stable, and the composition is not easy to segregate; the existing one An aluminum-titanium rare earth compound master alloy smelted with titanium alloy (patent application number 94112628.5), which...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22B34/12C22B9/20
Inventor 张忠世郭树军
Owner 忠世高新材料股份有限公司
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