Preparation method of large-scale high-purity copper ingot
A high-purity copper, large-scale technology, applied in the field of metal material forming, can solve the problems that cannot meet the requirements of high-quality large-scale rotating target production, high-purity ingot grains are thick, dendrites are developed, etc., to achieve fine structure, branched The effect of undeveloped crystal and convenient operation
Active Publication Date: 2022-02-01
SHENYANG NONFERROUS METALS PROCESSING CO LTD
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Problems solved by technology
[0004] In order to solve the problem that the prior art high-purity ingots have coarse grains and developed dendrites, which cannot meet the needs of high-quality and large-scale rotating target production, the purpose of the present invention is to provide a method for preparing large-scale high-purity copper ingots
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Embodiment 1
[0033] Example 1 Preparation of an iron-copper alloy ∮ 290mm round ingot.
[0034] Product requirements: Overproduction of the newly manufactured smelting furnace is not less than 3 days in the early stage, and then it is transferred to normal production; when smelting, the coupling magnetic field power supply is connected and the crystallizer is installed. The diameter of the crystallizer is ∮297mm.
[0035] The preparation method of the iron-copper alloy ∮ 290 mm circular ingot specifically includes the following steps.
[0036] Step 1, raw material selection.
[0037] Conditions The raw materials required for the production of high-purity copper ingots must have higher copper content than the ingots. Usually under atmospheric conditions, cathode copper with a purity not lower than grade A is used to make ingots with a purity greater than 99.99%; or 99.999% pure copper ingots should be made of copper materials with a purity higher than 99.999%.
[0038] Step 2, melting.
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Abstract
The invention relates to the technical field of metal material forming, in particular to a method for preparing large-scale high-purity copper ingots. The preparation method of the large-scale high-purity copper ingot The preparation method includes the following steps: Step 1, raw material selection: the copper content must be higher than the ingot; Electrolytic copper—heating and melting—insulation and standing; step 3, casting: install graphite casting tube, flow limiting valve and other components—scalding burner—insulation and standing—casting; step 4, inspection and sawing. The method for preparing large-scale high-purity copper ingots provided by the present invention produces finer ingot structures and undeveloped dendrites; the process is simple, no special equipment is required, and there is no equipment investment, which can make full use of the existing facilities of general nonferrous metal processing enterprises. Induction melting furnace with upper and lower structure, semi-continuous casting machine, coupled magnetic field power supply system, crystallizer with induction coil, easy to operate, clean and environmentally friendly, high production efficiency, and can form industrialized mass production.
Description
technical field [0001] The invention relates to the technical field of metal material forming, in particular to a method for preparing large-scale high-purity copper ingots. Background technique [0002] In recent years, with the transformation and upgrading of my country's industry, copper and copper alloy products have been applied in many fields due to their good comprehensive performance, especially in the 5G field, which also puts forward higher requirements for copper processing products. Taking the rapid development of the electronics industry as an example, with the rapid development of thin film materials, the demand for high-purity copper rotating targets used in these industries is increasing, and the quality requirements are getting better and better, especially emphasizing the utilization rate of materials, large-scale rotating targets The utilization rate of the tube target can reach 80%, while the utilization rate of the small block material is only 40%. There...
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IPC IPC(8): B22D7/00B22D27/08
CPCB22D7/005B22D27/08
Inventor 董艳霞
Owner SHENYANG NONFERROUS METALS PROCESSING CO LTD