Plastic forming method for large complex special-shaped structural part
A plastic forming and cavity technology, applied in metal processing equipment, metal extrusion dies, etc., can solve the problems of increasing process and cost, high difficulty of pre-forming, improving plastic fluidity, solving filling problems, and high efficiency. Effect
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Embodiment 1
[0034] A plastic forming method of non-proportional pressure loading of a PG-1 crankshaft reciprocating ejection die, the specific steps are as follows:
[0035] Step one, cutting
[0036] Step one, cutting
[0037] Will The 34CrNiMo6 steel bar is sawed as of blanks.
[0038] Step 2. Heating
[0039] The billet completed in the first step is heated in a gas furnace to the initial forging temperature of 1100°C.
[0040] Step three, mold heating
[0041] The use of induction heating equipment will be as figure 1 The upper and lower dies of the follow-up cavity shown are heated to 400°C and held for 30 minutes;
[0042] Step 4. Loading
[0043] Put the blank heated in step 2 into such as figure 1 In the mold cavity of the follow-up cavity shown, the follow-up cavity includes an upper punch 1, an upper die 2, a cavity 3, a lower die 4 and a lower punch 5 arranged vertically in sequence;
[0044] Step five, close the mold
[0045] After step 4 is completed, the mold is...
Embodiment 2
[0085] A plastic forming method of non-proportional pressure loading of a 7A04 aluminum alloy support body with a reciprocating ejection die, the specific steps are as follows:
[0086] Step one, cutting
[0087] Will The 7A04 aluminum alloy bar stock sawing is of blanks.
[0088] Step 2. Heating
[0089] The billet completed in the first step is heated in a gas furnace to the initial forging temperature of 430°C.
[0090] Step three, mold heating
[0091] The use of induction heating equipment will be as figure 1 The upper and lower dies of the follow-up cavity shown are heated to 400°C and held for 30 minutes;
[0092] Step 4. Loading
[0093] Put the blank heated in step 2 into such as figure 1 In the cavity 3 of the follow-up cavity shown in the figure, the follow-up cavity includes an upper punch 1, an upper die 2, a cavity 3, a lower die 4 and a lower punch 5 arranged vertically in sequence;
[0094] Step five, close the mold
[0095] After step 4 is complete...
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