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Aluminum Alloy DieCasting Process Case
2023-08-18 10:30
Weight of casting:1.4 kg(including 0.6 kg of inserts).
Wall thickness:2~2.5mm.
Projection area:150mm square
1. technical requirements
1) Pressure resistance. The casting structure is shown in Figure 18-23.
2) Material: ADC12.
3) Die-casting machine: 500t.
4)Pouring system design: to establish good filling conditions and sufficient exhaust, see Figure 18-24.
5)Adopt the casting method, and set wear-resistant cast iron cylinder liner.
Figure 18-23 Die casting with cast iron cylinder liner Figure 18-24 Forms of pouring system and overflow system
2. Die casting process parameters
1) low speed: 0.3 m/s.
High-speed speed: 3 m/s.
2) low-speed stroke: 310 mm.
High-speed start point:310mm.
High-speed travel:130mmo
3)Accumulator pressure:10 MPa.
Booster pressure:20 MPa.
Specific pressure of injection:75 MPao
4)Holding time:10 s.
5)Punch diameter:p70mm.
Pouring metal quantity: 2 kg
Shank thickness: 25 mm
6)Pouring temperature:660C
7)Mold release agent: water-based paint
8)punch lubricant: oil-based (graphite-free), in order to maintain the surface of the casting is bright and clean
3. Die casting process
Cleaning the cavity and spraying → Installation of inserts → Insertion of movable mold core 1 → Insertion of movable mold core 2 → Insertion of movable mold core 3 → Insertion of movable mold core 4 → Closing of the mold → Pouring → Injection → Opening of the mold → Withdrawal of the core 4 → Withdrawal of the core 3 → Withdrawal of the core 2 → Withdrawal of the core 1 → Ejecting of castings → Removal of the castings → Cutting of edges
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