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A kind of titanium alloy for preparing impeller and its preparation method

A technology of titanium alloy and impeller, which is applied in the field of titanium alloy for impeller preparation and its preparation, to achieve the effects of easy metal internal flow, good weight reduction effect, and improved high temperature resistance and oxidation resistance

Active Publication Date: 2017-07-14
SHENYANG HENGYUNDA TITANIUM DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it can no longer meet the requirements of users in the current titanium market, and it is urgent to provide titanium alloy materials that are more corrosion-resistant, wear-resistant, and high-temperature resistant.

Method used

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  • A kind of titanium alloy for preparing impeller and its preparation method
  • A kind of titanium alloy for preparing impeller and its preparation method
  • A kind of titanium alloy for preparing impeller and its preparation method

Examples

Experimental program
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Embodiment 1

[0021] Based on Ti-6Al-4V as the benchmark, set Ti-6.5Al-4.2V, according to Al: 6.5%; V: 4.2%; Fe: 0.27%; Si: 0.07%; Zr: 0.07%; Mo: 0.07%; C: 0.07%; N: 0.015%; H: 0.001%; ​​O: 0.15%, and the remainder is the set amount of Ti to prepare the material. Prepare Al skin, Al beans, titanium sponge, powders of various metal elements, graphite and titanium dioxide according to the measurement, and put various materials into the distributing machine for full mixing. The total weight after mixing was 380 kg. The particle size of sponge titanium is 0.254-25.4mm; the alloy is put into the mold of the vertical hydraulic press to extrude the electrodes, and the weight of each electrode is 45Kg; 9 electrodes are shared and smelted in a conventional way in a vacuum furnace for Φ380 *L, Φ480*L and Φ580*L are smelted three times into ingots of Φ580*1700mm; the smelted ingots weigh 1.65t. After the flaw detection, the riser and bottom of the head were sawed to Φ560*1400mm, and the weight was 1...

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Abstract

The invention belongs to the technical field of production processing, and particularly relates to a titanium alloy used for preparing an impeller and a preparation method of the titanium alloy. The titanium alloy is prepared from, by weight, 6.0%-7.0% of Al, 4.0%-4.5% of V, 0.2%-0.3% of Fe, 0.05%-0.15% of Si, 0.05%-0.15% of Zr, 0.05%-0.15% of Mo, 0.05%-0.10% of C, 0.01%-0.04% of N, 0.001%-0.012% of H, 0.14%-0.18% of O and the balance Ti. Compared with the prior art, strength of the developed titanium alloy material is increased, the wear resistance and the corrosion resistance are high, and the high-temperature resistance and the oxidation resistance are both improved; because the titanium alloy impeller can work underwater for a long time and does not need to be frequently maintained or replaced, the maintenance cost can be reduced, the service life can be prolonged, and efficiency can be improved; and meanwhile, the price cost is reduced, benefits are increased, the prepared large impeller only has the weight less than 750 kg while having the diameter reaching 1010 / 280*330 mm, and the weight reduction effect is remarkably good.

Description

technical field [0001] The invention belongs to the technical field of production and processing, and in particular relates to a titanium alloy used for preparing an impeller and a preparation method thereof. Background technique [0002] Titanium is a high-tech industry. After more than half a century of development, Ti-6Al-4V alloy is a common alloy in the world today, and still accounts for more than 50% of the amount of titanium alloy. All major titanium countries in the world are developing their own Ti-6Al-4V alloy series grades, such as Russia has BT6, BTGc, BT6T, BT6K and other grades. The company began to develop TC4 (Ti-6Al-4V) alloy series grades in 1996 for all TC4-1, TC4-2 and TC4-3 of Beijing 621. Now, TC4EL1, TC4-A, TC4-B and other grades have been added. However, it can no longer meet the requirements of users in the current titanium market, and it is urgent to provide titanium alloy materials that are more corrosion-resistant, wear-resistant, and high-te...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/02C22C14/00C22F1/18
CPCC22C1/02C22C14/00C22F1/183F05D2300/174
Inventor 陈国财单学峰杨文甲张宝利杨晓辉陈苏
Owner SHENYANG HENGYUNDA TITANIUM DEV
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