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Method for preparing composite carbide solid solution by processing NbTi alloy waste

A composite carbide and waste treatment technology, which is applied in the field of metallurgy, can solve the problems of not finding and producing composite carbide solid solution, etc., achieve good development prospects, reduce production costs, and reduce product costs

Active Publication Date: 2018-06-05
NINGXIA ORIENT TANTALUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] At present, there is no report on the production of composite carbide solid solution after processing niobium and titanium alloy waste.

Method used

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  • Method for preparing composite carbide solid solution by processing NbTi alloy waste
  • Method for preparing composite carbide solid solution by processing NbTi alloy waste
  • Method for preparing composite carbide solid solution by processing NbTi alloy waste

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Embodiment 1

[0031] This embodiment is a method for preparing a multi-element composite carbide solid solution by processing the niobium-titanium alloy scrap of No. 1# in the production table 2. Its main component ratio is WC:TiC:TaC:NbC=56:24:12:8, and its technological process for:

[0032] The turning of NbTi alloy produced in the production of NbTi alloy is used as the raw material. Turning refers to the scraping of smelting ingots or bars. First, put the turnings into a container, add hot water, and use 0.5kg degreaser for 20kg scraps. , Skim off the oil floating on the surface of the water one by one until there is no oil floating on the surface. After the oil is removed, pour the car scraps into a clean trough to rinse off the degreaser with water; then use the volume percentage as HF :HNO3:H2O=1:3:4 concentrated acid solution soak for 10-20 minutes, then put it in living water to rinse and dry or put it in an oven to dry; put the dried car chips into a hydrogenation degassing furnace ...

Embodiment 2

[0037] This embodiment is the preparation of the multi-element composite carbide solid solution with the serial number 4 in Table 2. The main component ratio is WC:TiC:NbC=49:40:11, and the process is:

[0038] Calculate according to the production of 100Kg WC:TiC:NbC=49:40:11, take 18.3Kg of NbTi alloy powder in Table 4 as the raw material, and mix in 40.8Kg of TiO 2 , 46.2W powder, 24.5kg carbon black, add it to the V-type blender and mix for 8h, and the mixed material is carbonized in a graphite carbon tube furnace. The carbonization temperature is controlled at 1650±50℃, and the boat pushing time is 30min. / Boat, the loading volume is controlled at 2kg / boat. The material after the primary carbonization is ball milled, mixed, and analyzed. According to the analysis results, the total carbon and main effective components of the carbide are adjusted. The secondary carbonization is carried out in a vacuum carbon tube furnace, and the temperature is controlled at 1600±50℃. The hig...

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Abstract

The invention relates to a method for preparing a composite carbide solid solution by processing NbTi alloy waste. The method comprises the following preparation process steps: carrying out hydrogenation, crushing, ball-milling grinding and blending on the NbTi alloy waste, and carrying out mixing, primary low-temperature carbonization, sieve grinding, secondary vacuum carbonization and ball-milling grinding, so as to obtain the composite carbide solid solution. The process comprises the steps of with the NbTi alloy waste obtained during the machining of a NbTi alloy product as the raw material, carrying out conventional processes such as cleaning, hydrogenation and ball-milling grinding so as to obtain fine-particle-size alloy hydrogenation powder, adding a certain amount of metallic oxides such as tungsten, tantalum, niobium and titanium or metal powder or carbon black for carbonation reaction, and sintering, so as to obtain the composite carbide solid solution. According to the process, the NbTi alloy waste can be effectively treated and can be prepared into a new composite carbide solid solution product, so that the method has very good economic and social values; and the production cost of multi-component solid solutions is effectively lowered, so that the process has good development prospects.

Description

Technical field [0001] The invention relates to the technical field of metallurgy, in particular to a method for preparing composite carbide solid solution by processing NbTi alloy waste. Background technique [0002] NbTi alloy is mainly used to construct superconducting high-energy accelerators, superconducting MRI medical diagnostic devices, controlled nuclear fusion new energy development devices, superconducting energy storage implementation projects, superconducting magnetic levitation high-speed trains, high-speed propulsion system and other large-scale superconducting projects Material manufacturing can also be used in aerospace structural materials. This kind of alloy will produce a large number of scraps, extrusion tails, forging scraps and other forms of NbTi scrap during the manufacturing process. The specific chemical composition is shown in Table 1. Nb and Ti are widely used in civil, military and other fields due to their excellent high temperature and corrosion r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/907
CPCC01P2004/82
Inventor 白掌军颉维平黄云红陈飞牟东王强石晓军李秉华
Owner NINGXIA ORIENT TANTALUM IND