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A kind of flame-retardant titanium alloy with high vanadium content and preparation method thereof

A technology of flame-retardant titanium alloy and content, which is applied in the coating process and coating of metal materials, can solve the problems of complex alloy composition improvement process, difficult flame-retardant performance and processing performance, and large deformation resistance, and achieve the internal structure Excellent, pollution-free, compact structure

Active Publication Date: 2017-03-08
西安聚束智能技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are two difficulties in the development and processing of the existing flame-retardant titanium alloys with V and Cr as the main additive elements: (1) The development of the existing flame-retardant titanium alloys uses traditional smelting methods, and the alloy composition improvement process is complex, The response speed is slow; (2) At present, most titanium alloy parts are formed by forging method. The increase of V element content is beneficial to improve the combustion resistance of titanium alloy, but at the same time, it will lead to excessive deformation resistance of titanium alloy during forging, difficult to process, and resistance to corrosion. Combustibility and processability are difficult to balance

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  • A kind of flame-retardant titanium alloy with high vanadium content and preparation method thereof
  • A kind of flame-retardant titanium alloy with high vanadium content and preparation method thereof
  • A kind of flame-retardant titanium alloy with high vanadium content and preparation method thereof

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Effect test

Embodiment 1

[0028] The flame-retardant titanium alloy with high vanadium content in this embodiment is composed of the following components by weight percentage: V 30%, Cr 15%, and the balance is Ti and unavoidable impurities.

[0029] The method for preparing the flame-retardant titanium alloy with high vanadium content in this embodiment is:

[0030] Step 1. Mix titanium powder, vanadium powder and chromium powder to obtain a mixed powder, and then dry the mixed powder at 120°C for 1.5 hours, and then grind and mix the dried mixed powder evenly to obtain a powder; The average particle size of the titanium powder is 131.4 μm, the average particle size of the vanadium powder is 58.5 μm, the average particle size of the chromium powder is 75 μm, and the mass purity of the titanium powder, vanadium powder and chromium powder is not less than 99.9%, The oxygen content of the titanium powder, vanadium powder and chromium powder is not more than 0.1wt%;

[0031] Step 2. Use laser cladding deposition...

Embodiment 2

[0034] The flame-retardant titanium alloy with high vanadium content in this embodiment is composed of the following components by weight percentage: V 27%, Cr 15%, and the balance is Ti and unavoidable impurities.

[0035] The method for preparing the flame-retardant titanium alloy with high vanadium content in this embodiment is:

[0036] Step 1. Mix titanium powder, vanadium powder and chromium powder to obtain a mixed powder, and then dry the mixed powder at 110°C for 2 hours, and then grind and mix the dried mixed powder evenly to obtain a powder; The average particle size of the titanium powder is 150 μm, the average particle size of the vanadium powder is 50 μm, the average particle size of the chromium powder is 89 μm, and the mass purity of the titanium powder, vanadium powder and chromium powder is not less than 99.9%. The oxygen content of powder, vanadium powder and chromium powder is not more than 0.1wt%;

[0037] Step 2. Use laser cladding deposition to deposit the pow...

Embodiment 3

[0040] The flame-retardant titanium alloy with high vanadium content in this embodiment is composed of the following components by weight percentage: V 35%, Cr 15%, and the balance is Ti and inevitable impurities.

[0041] The method for preparing the flame-retardant titanium alloy with high vanadium content in this embodiment is:

[0042] Step 1. Mix titanium powder, vanadium powder and chromium powder to obtain mixed powder, and then dry the mixed powder at 130°C for 1 hour, and then grind and mix the dried mixed powder uniformly to obtain a powder; The average particle size of the titanium powder is 75 μm, the average particle size of the vanadium powder is 61.7 μm, the average particle size of the chromium powder is 50 μm, and the mass purity of the titanium powder, vanadium powder and chromium powder is not less than 99.9%. The oxygen content of titanium powder, vanadium powder and chromium powder is not more than 0.1wt%;

[0043] Step 2. Use laser cladding deposition to deposi...

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Abstract

The invention discloses a flame-retardant titanium alloy with high vanadium content, which is composed of the following components in weight percent: 27%-35% of V, 15% of Cr, and the balance is Ti and unavoidable impurities. In addition, the present invention also discloses a method for preparing the flame-retardant titanium alloy. The method is as follows: 1. Mix titanium powder, vanadium powder and chromium powder to obtain a mixed powder, and after drying, grind and mix the mixed powder evenly to obtain powder; 2. The powder is deposited on the surface of the substrate by means of laser cladding deposition, and a flame-retardant titanium alloy is obtained after deposition, and then the flame-retardant titanium alloy is separated from the substrate. The flame retardant titanium alloy of the invention has compact structure, no defect, excellent internal structure and good flame retardant performance.

Description

Technical field [0001] The invention belongs to the technical field of laser processing of titanium alloy materials, and specifically relates to a flame-retardant titanium alloy with high vanadium content and a preparation method thereof. Background technique [0002] Titanium and titanium alloys are widely used in aviation, aerospace, ships, weapons, medical and other industries because of their low density, high specific strength, high temperature resistance, corrosion resistance, and good biocompatibility. When designing advanced aero-engines, titanium alloy is an indispensable key material. However, conventional titanium alloys will burn under certain air pressure and temperature conditions, which is the so-called "titanium fire", which limits the application of titanium alloys. Generally, the combustion spreading time of titanium alloy parts is only 4s to 20s from start to end, and it is too late to take fire extinguishing measures in such a short time. Therefore, improvin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C14/00C23C24/10
Inventor 张凤英陈永楠张学敏杨雪坤刘桐赵汉宇
Owner 西安聚束智能技术有限公司
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