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Method for preparing titanium alloy cast ingot

A titanium alloy and ingot casting technology, which is applied in the field of preparing titanium alloy ingots, can solve the problems of difficult to control the composition of ingots, the inability to produce size alloys, and the inability to produce size ingots, etc., to achieve high strength, fine grain size, good plastic effect

Pending Publication Date: 2019-05-21
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, methods such as electric arc furnace melting, electron beam cooling bed melting and spark plasma sintering are often used for Ti-29Nb-13Ta-4.6Zr alloy materials at home and abroad. Ti-29Nb-13Ta-4.6Zr prepared by electric arc furnace melting Alloy materials, due to the limitation of the process, the materials will be high-density inclusions, segregation is serious, and large-sized ingots cannot be produced
Although the electron beam cooling bed smelting eliminates the previous shortcomings, the method has a lot of metal loss, the composition is not easy to control, and the ingot is generally super large and long, which requires high equipment requirements for subsequent processing.
The spark plasma sintering method is inefficient and cannot produce larger alloys

Method used

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  • Method for preparing titanium alloy cast ingot
  • Method for preparing titanium alloy cast ingot

Examples

Experimental program
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Effect test

Embodiment 1

[0040] A method for preparing a titanium alloy ingot, the preparation steps are as follows:

[0041] Step 1. Material preparation: 5*5*5 mm3 titanium sheet, 3*3*3 mm3 tantalum sheet, 2*2*2 mm3 niobium sheet, and 2*2*2 mm3 zirconium sheet with a purity of 99.99% are used as raw materials , use a file or sandpaper to remove the oxide layer on the surface of the raw material, use an ultrasonic cleaner to add absolute ethanol to clean and dry the raw material, and then press Ti53.4%, Nb29%, Ta13%, Zr4.6% according to the total mass of 10Kg % by mass (wt.%) for batching. Put the niobium slices and tantalum slices into the crucible with a diameter of 140mm in the suspension melting furnace, and place the zirconium slices and titanium slices in the feeder.

[0042] Step 2. Vacuumize the vacuum suspension melting furnace:

[0043] Check whether the vacuum system, pneumatic system, water cooling system, power supply system and other indicators are normal.

[0044] After closing the ...

Embodiment 2

[0056] A method for preparing a titanium alloy ingot, the preparation steps are as follows:

[0057] Step 1. Material preparation: 3*3*3 mm with a purity of 99.99% 3 Titanium sheet, 3*3*3 mm 3 Tantalum sheet, 3*3*3 mm 3 Niobium sheet, and 1*1*1 mm 3 Zirconium slices are used as raw materials. Use a file or sandpaper to remove the oxide layer on the surface of the raw material. Use an ultrasonic cleaner to add absolute ethanol to clean and dry the raw material. The mass percentage (wt.%) of Zr4.6% is used for batching. Put the niobium slices and tantalum slices into the crucible with a diameter of 140mm in the suspension melting furnace, and place the zirconium slices and titanium slices in the feeder.

[0058] Step 2. Vacuumize the vacuum suspension melting furnace:

[0059] Check whether the vacuum system, pneumatic system, water cooling system, power supply system and other indicators are normal.

[0060] After closing the vacuum suspension melting furnace door, start ...

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Abstract

The invention discloses a method for preparing a titanium alloy cast ingot. Under argon shielding, high-purity flaky raw materials are smelted in batches by a vacuum suspension smelting furnace underdifferent heating powers; and after the raw materials are refined and furnace-cooled and a cast ingot is turned over to be smelted repeatedly, the final Ti-29Nb-13Ta-4.6Zr alloy cast ingot is obtained. The Ti-29Nb-13Ta-4.6Zr alloy cast ingot which has the beneficial effects of the uniform structure, high purity, refined grains, excellent mechanical performance and the like can be prepared, the method is a good choice for preparing the Ti-29Nb-13Ta-4.6Zr alloy cast ingot through smelting, and the method is simple in technological process and suitable for industrial production.

Description

technical field [0001] The invention belongs to the field of preparation of biomedical materials, and in particular relates to a method for preparing titanium alloy ingots. Background technique [0002] With the continuous improvement of medical technology, people's demand for medical materials is increasing, and traditional medical materials can no longer meet the existing needs. Titanium alloys are widely used in biomedical metal materials due to their excellent mechanical properties, low Young's modulus and good biocompatibility. Due to its wide application prospects, titanium alloy has become a research hotspot of biomedical metal materials. [0003] With the continuous advancement of science, the requirements for medical materials are also increasing. The original titanium alloys are mainly represented by Al and V, which are harmful to the human body, and have poor wear resistance. The current medical titanium alloy is mainly Ti-6Al-4V medical titanium alloy, because...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C30/00C22C1/02
Inventor 何勇王传婷郭志平何源潘绪超焦俊杰郭磊方中马跃季铖
Owner NANJING UNIV OF SCI & TECH