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Generally, electrodes with a certain strength need to be prepared first to prevent pieces from falling off during the smelting process. The four commonly used electrode preparation methods are:
(1) Fully mix the chipped return charge or small-sized block return charge with sponge titanium and alloy elements, press it into an electrode block on a hydraulic press, and then weld it into a consumable electrode. This is a vacuum consumable arc furnace The most commonly used method is to recover the returned charge, and the proportion of returned charge can reach 40%.
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(2) The return charge of the same brand is bundled in a certain proportion to form self-consumption power f and the added amount of return charge can reach 100%.
(3) The electrode block is used as the core material, and a certain proportion of plate and tubular return materials are bundled around it to form a consumable electrode. The amount of return materials added can be less than 80%.
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(4) Consumable electrodes are made from ingot risers of the same brand and specifications through plasma argon arc welding, and the utilization rate of returned charge is 100%.
