Process for recovering and remelting TC4 wastes by electronic beam cold bed furnace
A technology of electron beam cooling hearth furnace and recycled materials, which is applied to the improvement of process efficiency, etc., can solve the problems that have not been reported, the volatilization loss of Al element, and the chemical composition of ingots cannot reach the standard, etc., achieving obvious economic benefits and convenient operation , good effect
Active Publication Date: 2017-01-04
QINGHAI JUNENG TITANIUM IND CO LTD
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Problems solved by technology
However, since the main alloying element Al in TC4 scrap is much larger than the matrix element, if it is directly remelted, the Al element will inevitably be volatilized and lost in a large area, so that the chemical composition of the final TC4 ingot cannot meet the standard
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[0032] A process for recovering remelting TC4 waste in an electron beam cold hearth furnace, comprising the following process: material preparation→cutting of Al plates→swinging materials→drying→smelting in furnace. The process steps include: (1) Determine the chemical composition of TC4 recycled materials, and weigh 2540kg of materials as required, of which TC4 waste is 98% to 99%, and Al plate is 1% to 2%; (2) Limit the length and width of the material, according to the requirements Cut the Al plate; (3) place the material by superimposing the TC4 waste and the Al plate, and dry the placed material; (4) send the dried material into the electron beam cooling hearth furnace for melting, one-time melting Obtain TC4 titanium alloy ingot.
[0033] Further, the chemical composition of the TC4 waste described in step 1 complies with the national standard GB / T3620.1-2007: its specific composition content is: the content of Al is 5.5% to 6.75%, the content of V is 3.5% to 4.5%, O Th...
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The invention discloses a process for recovering and remelting TC4 wastes by an electronic beam cold bed furnace, and belongs to the technical field of preparation of titanium alloys. The process comprises the following steps: (1) chemical components and the weight of the TC4 wastes are measured; and the weight of Al plates needing to be added is calculated; (2) the size of the materials is estimated according to the bulk density of the TC4 wastes; and the Al plates are tailored according to requirements; (3) the materials are placed by a mode of stacking the TC4 wastes with the Al plates, and are dried; and (4) the dried materials are fed in the electronic beam cold bed furnace for once smelting to obtain a TC4 titanium alloy. The invention provides a treatment scheme for recovering and remelting the TC4 wastes with reliability, practicability, high efficiency and low cost; and meanwhile, the process is continuous in flow, convenient for operation and thorough in treatment, can solve the demands of recovering and remelting treatment of the TC4 wastes with irregular sizes, and is suitable for recovering and remelting treatment of ingot head and ingot tail materials of TC4.
Description
technical field [0001] The invention relates to a recycling and remelting treatment process for TC4 waste and ingot processing sawing TC4 head and tail, belonging to the technical field of titanium alloy ingot preparation. Background technique [0002] The economic development model of recycling renewable resources based on the continuous recycling of materials is becoming a global trend, and the renewable resource recycling industry that follows the path of sustainable development has become a key support object of the state. Titanium alloy waste is a renewable resource, and its comprehensive utilization saves a lot of energy compared with the development of primary mines. TC4 alloy accounts for 50% of the total titanium alloy and 95% of all titanium alloy workpieces. It has a wide range of uses, and the significance of recycling and remelting TC4 waste is also extraordinary. [0003] The inherent defect of the traditional vacuum consumable arc melting process, impurities...
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IPC IPC(8): C22B9/22C22B7/00C22B34/12
CPCC22B7/001C22B9/228C22B34/1218C22B34/1295Y02P10/20
Inventor 张志斌周武杜彬
Owner QINGHAI JUNENG TITANIUM IND CO LTD