Pre-diverging-wedge pressing precision forming die and disc forming method
A precision forming and pre-splitting technology, applied in the direction of metal extrusion dies, etc., can solve the problems of large forming force, high equipment tonnage requirements, high manufacturing cost, etc., to reduce extrusion forming force, reduce contact area, and wide application range Effect
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[0032] Example 1:
[0033] This embodiment is used to form the outer diameter of 480mm, the inner diameter of 50mm figure 1 LC4 aluminum alloy disc of the structure shown. The mold includes: a pre-split mold, a wedge die, a punch mandrel and a template to form an extrusion punch, and a concave mold.
[0034] Specific steps when using the mold:
[0035] Step 1: Heat the assembled precision extrusion die to 370°C±5°C as a whole. After keeping the temperature for 4-5 hours, install the male and female molds on the forming hydraulic press, and place them on the mold and the hydraulic press table and slide Heat insulation pads are installed on the contact surfaces of the blocks.
[0036] Step 2: Put the LC4 aluminum alloy ring blank (outer diameter 425±2mm, inner diameter 248±2mm, height 75±2mm) heated to 370°C±5°C for 2-3 hours into the cavity and turn on the hydraulic press Perform precision extrusion molding.
[0037] The third step: remove the load of the hydraulic press, and after th...
Example Embodiment
[0038] Example 2:
[0039] This embodiment is used to form the outer diameter of 480mm, the inner diameter of 50mm figure 1 AZ80 magnesium alloy disc of the structure shown. The mold includes: the mold includes: a pre-split mold, a wedge die, a punch mandrel and a template to form an extrusion punch, and a concave mold.
[0040] Step 1: Heat the assembled precision extrusion die to 390°C±5°C as a whole. After keeping the temperature for 4-5 hours, install the male and female molds on the forming hydraulic press, and place them on the mold and hydraulic press workbench and slide Heat insulation pads are installed on the contact surfaces of the blocks.
[0041] Step 2: Put the AZ80 magnesium alloy ring blank (outer diameter 425±2mm, inner diameter 248±2mm, height 75±2mm) heated to 380°C±5°C for 2-3 hours into the cavity and turn on the hydraulic press Perform precision extrusion molding.
[0042] The third step: remove the load of the hydraulic press. After the sliding block on the hy...
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