Aluminum Processing Related Process

The heat treatment to ensure the final properties of the product is called finished heat treatment, including finished annealing, solution treatment, quenching, natural aging and artificial aging treatment; in addition, graded aging and deformation heat treatment processes are also developed. The aging treatment not only improves the mechanical properties of the product, but also improves the stress corrosion resistance and fracture toughness of the product. The transfer time from solution heating to quenching should generally be controlled within 30 seconds. The quenching cooling rate is to ensure that the supersaturated solid solution is obtained without excessive quenching stress and bending deformation of the product. The coils and sheets are annealed in a powerful circulating ventilated box furnace, pit furnace, vertical sheet continuous annealing furnace or air-cushion continuous annealing furnace. The new furnace uses a protective atmosphere. The quenching is generally carried out in a salt bath, and the new process is quenched by an air-cushion continuous quenching furnace.