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Pressure Die Casting: The Steps

OEM Plastic Molding Auto Car Part Connector Injection Mould

precision (17)

To start the process, the die will need to be designed and manufactured using high-grade steel that’s suitable for the part’s flow, solidification, cooling, and other specs. Once assembled, the die has a release agent applied to it in order to prevent any of the molten metal from sticking to it and making removing the part a nightmare. You also have to preheat the die before casting to minimize any thermal shock and avoid any issues with the flow of the metal. The die is then ready to go into the casting machine, get aligned, and clamped in place. Lubrication and cooling systems are often integrated within the die to keep the temperature optimal and everything running smoothly.

After you’ve designed the mold, these are the steps to follow:

  1. Start by cleaning the two halves of the die and applying a release agent. If necessary, preheat the die.
  2. Heat the metal in a furnace until it reaches its melting point
  3. Transfer the molten metal to the injection system of the die-casting machine, using a piston to inject it into the die cavity at high speed and pressure. For low-pressure die casting, use lower speeds and pressures.
  4. Keep the pressure consistent until the metal has completely solidified and cooled
  5. Once nice and solid, separate the die halves, and remove the solidified part using ejector pins
  6. Use a trimming process to remove any excess material from the sprue, runners, gates, or flash
  7. If needed, this is the step where you’d carry out additional procedures to the casting like machining, painting, or assembly
  8. In this final step, you’d apply any finishing touches and make sure the part meets the standards you initially set out.

 

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