A kind of vanadium-chromium-titanium alloy plate and preparation method thereof

A technology of titanium alloy plate and alloy plate, which is applied in the field of metal plastic processing, can solve the problems of high price and limit the popularization and application of alloys, achieve good effect, reduce the probability of cracks on the processed surface, and achieve the effect of uniform heating and temperature

Active Publication Date: 2017-04-26
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, V with a purity of 99.9% has a market price of about 2,500 yuan / kg, and the cost to configure a furnace of the alloy (20kg, V4Cr4Ti) is about 50,000 yuan. The price is very high, which limits the popularization and application of this alloy

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  • A kind of vanadium-chromium-titanium alloy plate and preparation method thereof

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preparation example Construction

[0042] A kind of preparation method of vanadium-chromium-titanium alloy plate of the present invention comprises the following steps:

[0043] a. Prepare V 88-94%, Cr 2.9-6%, Ti 2.6-6% according to the weight percentage of the raw material composition of the alloy plate, and the balance is unavoidable impurities with a total mass≤0.5%;

[0044] b. Use the raw material prepared in step a to obtain the crude product of V-Cr-Ti alloy by metallothermic reduction method, and melt it into a standard V-Cr-Ti alloy ingot in a vacuum environment, and heat it in a vacuum furnace at 3 to 20°C Heat up to 1000-1350°C at a rate of 1 / min, keep warm for 0.5-8h, and cool down to room temperature with the furnace under vacuum;

[0045] In this step, the alloy raw material is prepared by metallothermic reduction method + vacuum induction refining method to obtain alloy ingots under the standard requirements, and heat treatment in a vacuum heating furnace can eliminate casting stress and make the...

Embodiment 1

[0064] (1) Prepare V 92%, Cr3.9%, Ti4% according to the weight percentage of the raw material composition of the alloy plate, and the balance is the unavoidable impurities of the total mass≤0.5%;

[0065] (2) Using Ca thermal reduction method + two times of water-cooled copper crucible vacuum induction melting V-3.9wt%Cr-4wt%Ti alloy ingot, put the ingot into a vacuum heating furnace and raise the temperature to 1100 at a rate of 5°C / min After 1 hour of heat preservation at ℃, the vacuum degree in the furnace is 5×10 -3 Pa, after the heat preservation is over, the vacuum is cooled with the furnace;

[0066] (3) Cut a cylindrical billet with a thickness of 50mm on the ingot after vacuum annealing and chamfer the corners. -3 Pa, then the temperature was raised to 800°C at a rate of 5°C / min, and the holding time was 1h; after the holding time was completed, the sheath was sealed and welded to obtain an alloy forged sheath body.

[0067] (4) Heat the alloy forging sheath body in...

Embodiment 2

[0076] (1) Prepare V 90%, Cr 5.3%, Ti 4.6% according to the weight percent of the raw material composition of the alloy plate, and the balance is unavoidable impurities of total mass≤0.5%;

[0077] (2) Adopt Ca thermal reduction method + three water-cooled copper crucible vacuum induction smelting to obtain V-5.3wt%Cr-4.6wt%Ti alloy ingot, put the ingot into a vacuum heating furnace and heat up to After holding at 1100°C for 1 hour, the vacuum in the furnace is 5×10 -3 Pa, after the heat preservation is over, the vacuum is cooled with the furnace;

[0078] (3) Cut a cylindrical billet with a thickness of 40mm from the ingot after vacuum annealing and chamfer the corners. -3 Pa, then the temperature was raised to 800°C at a rate of 10°C / min, and the holding time was 1h; after the holding time was completed, the sheath was sealed and welded to obtain an alloy forged sheath body.

[0079] (4) Heat the alloy forging sheath body in a box-type resistance furnace at a rate of 10°C / mi...

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Abstract

The invention relates to a vanadium, chrome and titanium alloy plate and a preparation method thereof, and belongs to the technical field of metal plastic machining. The vanadium, chrome and titanium alloy plate is composed of, by weight, 88-94% of V, 2.9-6% of Cr, 2.6-6% of Ti and the balance not more than 0.5% of inevitable impurities. The vanadium, chrome and titanium alloy plate is prepared by sequentially conducting ingot casting homogenizing annealing, pancake forging, hammer cogging, pancake hot rolling, cold rolling, solid solution and aging treatment, argon filling cooling following a furnace and other procedures with alloy ingots prepared through the metallothermics and the vacuum induction refining method as blanks. The obtained V-Cr-Ti alloy plate is small in crystalline grain, uniform in component, good in surface quality and excellent in performance.

Description

technical field [0001] The invention relates to a low-cost vanadium-chromium-titanium alloy plate and a preparation method thereof, belonging to the technical field of metal plastic processing. Background technique [0002] Vanadium-chromium-titanium alloy has long-term stable low radioactivity, low decay heat, and can be recycled; anti-radiation swelling, heat resistance up to 850°C, high thermal conductivity, low thermal expansion, low thermal stress, high temperature Applicable limit, good compatibility in the liquid lithium circuit, and good machinability, can be rolled into thin sheets, extruded into tubes, and has good weldability, so it is selected as the fusion reactor V-Li cladding Structural materials, among which V4Cr4Ti and V5Cr5Ti alloys are the most representative. [0003] Since the 1960s, the preparation and basic research of vanadium alloys have been started abroad. The current preparation methods mainly include electron beam melting, vacuum consumable ele...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C27/02C22F1/18
Inventor 卢东贺同正孙朝晖马坪钟兵毛凤娇尹丹凤
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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