Forming method of Mg-Gd-Y-Zn-Zr magnesium alloy bidirectional expansion equal channel extrusion blank forming
An equal channel extrusion, magnesium alloy technology, applied in the direction of metal extrusion dies, etc., can solve the problems of difficult to achieve ultra-fine material, small strain, etc., achieve small deformation force, improve material performance, and enhance uniformity. Effect
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[0037] The invention discloses a method for forming a billet by bidirectional expansion equal-channel extrusion of a Mg-Gd-Y-Zn-Zr magnesium alloy, which involves a bidirectional expansion equal-channel extrusion of a Mg-Gd-Y-Zn-Zr magnesium alloy Forming dies for compacts, see Figure 1-15 , the mold includes an upper mold base 1, a punch 2 and a die 5.
[0038] Such as Figure 6 As shown, the punch 2 is a cylinder, and the upper end of the punch 2 forms a radially extending fixing portion 21, and the fixing portion 21 is square, such as Figure 11 As shown, the upper mold base 1 is provided with a square groove 11 for the insertion of the fixed part 21. After the insertion is completed, the lower end of the upper mold base 1 is provided with a fastening nut 3, and an external thread that cooperates with the fastening nut 3 is formed. The nut 3 passes through the punch 2 to clamp the fixing part 21, so that the punch 2 is coaxially and vertically fixed on the upper die base...
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