Method for preparing high-performance magnesium alloy sheet
A magnesium alloy, high-performance technology, used in metal rolling, manufacturing tools, temperature control, etc., can solve the problem of not finding the optimal configuration of cast-rolled slabs, and achieve the effect of high tensile strength, fine and uniform grains
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[0018] Proportioning is carried out according to the alloy composition of the following magnesium alloy sheet:
[0019] 2.5% to 3.5% Al, 0.6% to 1.4% Zn, Fe≤0.005%, Si≤0.08%, Cu≤0.01%, Ni≤0.001, Ca≤0.04%, and the rest is Mg.
[0020] The production process is:
[0021] 1) Casting and rolling process
[0022] 1.1) Alloy melting:
[0023] The batching is carried out according to the set ingredients, and then heated from room temperature to 640-660°C under the SF6+N2 protective atmosphere to melt the batching. Raise the temperature to 700-720°C, add the intermediate alloy, and stir vigorously to make the added alloy disperse evenly, and keep it warm for 25-30min. Raise the temperature to 720-750°C, pass argon gas into the melt for 10-15 minutes, carry out hydrogen removal treatment, and keep stirring until the melt is relatively uniform.
[0024] 1.2) High temperature casting and rolling:
[0025] Lower the temperature to the casting and rolling temperature of 670-740°C, and...
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