Method for smelting copper magnesium alloy
A technology of copper-magnesium alloy and smelting furnace, which is applied in the production of copper-magnesium alloy strands or contact wires, and in the field of smelting copper-magnesium alloys. It can solve the problems of magnesium being easy to volatilize, poor safety, and easy to be oxidized, so that it is not easy to splash and volatilize. Effect
Active Publication Date: 2013-03-27
JIANGYIN ELECTRICAL ALLOY
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Problems solved by technology
However, since magnesium is a very active metal with low melting point and boiling point and low density, it is easily oxidized. Therefore, when magnesium ingots are added to the melting furnace, the magnesium ingots will start to burn as soon as they touch the molten copper in the melting furnace. Reaction will produce splashing phenomenon, its safety is poor, and magnesium is easy to volatilize, the magnesium content of the final copper-magnesium alloy is often low, and additional magnesium ingots need to be added to supplement, resulting in poor uniformity of magnesium content in the final product
Method used
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Embodiment 1
[0026] 1. Take 24.75Kg of cathode copper, calculate the required magnesium ingot weight of 0.1375Kg according to the copper-magnesium alloy ratio, insert the required weight of magnesium ingot into the lifting lug at the bottom of the cathode copper, and press the lifting lug to fix it, forming Combination of copper cathode and magnesium ingot.
[0027] 2. Lift the combination of cathode copper and magnesium ingot by crane and special fixture, put it into the smelting furnace, and use the weight of cathode copper to sink to the bottom of the smelting furnace.
[0028] 3. Heating to 1050~1200°C during smelting, melting the cathode copper and magnesium ingot combination into a copper-magnesium alloy melt, and adding a cathode copper and magnesium ingot combination at intervals according to the production efficiency of the billet, so that the cycle realizes continuous Production.
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The invention relates to a method for smelting copper magnesium alloy, which belongs to the technical field of electrical alloy materials and comprises the following process steps of: step 1, calculating the magnesium ingot weight required by each block of standard cathode copper according to the copper and magnesium alloy mixture ratio; step 2, plugging magnesium ingots with the circulated required weight into lifting lugs arranged at bottom of the cathode copper, tightly pressing the lifting lugs for fixation, and forming cathode copper and magnesium ingot combining elements; step 3, lifting the cathode copper and magnesium ingot combining elements, throwing the cathode copper and magnesium ingot combining elements into a smelting furnace, and fast sinking the combining elements into the bottom of the smelting furnace by the self weight of the cathode copper; and steps 4, heating the combining elements to 1050 to 1200 DEG C during smelting, smelting the cathode copper and magnesium ingot combining elements into copper magnesium alloy molten liquid, adding one block of cathode copper and magnesium ingot combining element at time intervals, and realizing the continuous production through the circulation in such a way. The method for smelting the copper magnesium alloy in the smelting furnace, the uniformity of magnesium elements in copper liquid is better, and the magnesium element content can be ensured.
Description
technical field [0001] The invention relates to a method for smelting copper-magnesium alloys, which is mainly used in the production of copper-magnesium alloy strands or contact wires, and belongs to the technical field of electrical alloy materials. Background technique [0002] Due to the strengthening effect of the alloy, the contact wires, catenary cables and hanging strings for electrified railways made of copper-magnesium alloys have good corrosion resistance, much higher mechanical strength than pure copper stranded wires, good current-carrying performance, large overload capacity, and thermal stability. Good performance, its single wire strength is about 1.5 times higher than that of pure copper single wire, can withstand overload impact, stable and reliable work, long service life, so it is widely used in high-speed electrified railway catenary as current-carrying alloy contact wire and load-bearing cable use. [0003] In the past, when copper-magnesium alloys wer...
Claims
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IPC IPC(8): C22C1/02C22C9/00
Inventor 陈希康冯岳军张忠良
Owner JIANGYIN ELECTRICAL ALLOY