Preparation method of large-sized magnesium alloy forged disc
A magnesium alloy, large-scale technology, which is applied in the field of preparing large-scale magnesium alloy forging cakes, can solve the problems of narrow magnesium alloy forging temperature range, adverse effects, inconsistent deformation of core and edge, etc., to ensure microstructure and performance. , Improve tissue recovery ability, improve the effect of comprehensive mechanical properties
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Embodiment 1
[0051] A magnesium alloy forging cake forging process, with diameter D=300mm, composition (wt.%): Al8.2~8.5; Mn0.2~0.25; Zn0.4~0.5; Cu≦0.05; Ni≦0.005 ; Si≦0.15; Be≦0.02; Fe≦0.05; other impurities≦0.3; the balance is Mg, the homogenized magnesium alloy continuous casting ingot is forged into a magnesium alloy forging cake with a diameter of 695mm and a thickness of 105mm; including the following step:
[0052] a. Material flaw detection: Remove surface scale and visible cracks from the continuous casting billet, process it into an ingot with a height of 550mm and a diameter of 300mm, and use ultrasonic waves to detect flaws in the billet to ensure that there are no obvious cracks and shrinkage cavities inside the billet , inclusion defects;
[0053] b. Heating: Heat the ingot without obvious cracks, shrinkage cavities and inclusion defects to 400°C, keep it warm for 6 hours, and heat the hydraulic press mold to 300°C;
[0054] c. Thickness of pier: Stand the ingot after heati...
Embodiment 2
[0060] A magnesium alloy forging cake forging process, the diameter is D=325mm, the composition is (wt.%): Al8.2~8.5; Mn0.2~0.25; Zn0.4~0.5; Cu≦0.05; Ni≦0.005 ; Si≦0.15; Be≦0.02; Fe≦0.05; other impurities≦0.3; the balance is Mg, the homogenized magnesium alloy continuous casting ingot is forged into a magnesium alloy forging cake with a diameter of 685mm and a thickness of 110mm; including the following step:
[0061] a. Material flaw detection: Remove surface scale and visible cracks from the continuous casting billet, process it into a billet with a height of 500mm and a diameter of 325mm, and use ultrasonic waves to detect flaws in the billet to ensure that there are no obvious cracks and shrinkage cavities inside the billet , inclusion defects;
[0062] b. Heating: Heat the ingot without obvious cracks, shrinkage cavities and inclusion defects to 420°C, keep it warm for 10h, and heat the hydraulic press mold to 320°C;
[0063] c. Thickness of pier: put the ingot after he...
Embodiment 3
[0069] A magnesium alloy forging cake forging process, the diameter is D=350mm, the composition is (wt.%): Al8.2~8.5; Mn0.2~0.25; Zn0.4~0.5; Cu≦0.05; Ni≦0.005 ; Si≦0.15; Be≦0.02; Fe≦0.05; other impurities≦0.3; the balance is Mg and the homogenized continuous casting billet is forged into a magnesium alloy forging cake with a diameter of 700mm; including the following steps:
[0070] a. Material flaw detection: Remove surface scale and visible cracks from the continuous casting slab, process it into an ingot with a height of 525mm and a diameter of 350mm, and conduct flaw detection on the ingot with ultrasonic waves to ensure that there are no obvious cracks, shrinkage cavities, inclusion defects;
[0071]b. Heating: Heat the ingot without obvious cracks, shrinkage cavities and inclusion defects to 430°C, keep it warm for 10h, and heat the hydraulic press mold to 350°C;
[0072] c. Thickness of the pier: Stand the ingot after heating and heat preservation on the lower anvil of...
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