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Why is aluminum wire not equally soft and hard in the annealing furnace

Heat treatment furnace is divided into annealing furnace, quenching furnace, tempering furnace, normalizing furnace, tempering furnace, mainly used for large carbon steel, alloy steel parts of the annealing;Surface hardening parts tempering;Stress relief annealing, aging and other heat treatment processes for welding parts.Heating methods include electric heating, fuel oil, gas, coal, hot air circulation.Annealing furnace is a new type of heat exchange equipment.The annealing furnace is an energy saving periodic working furnace with super energy saving structure, adopting fiber structure and saving 60% electricity.