Plastic molding and die casting how do you choose?

What Is Die Casting vs. Injection Molding?

Making a part is basically the same using die casting or injection molding.  You create a die or mold in the form of your part.  You liquefy your new material and pressure it into the die or mold.  When the mold cools, you open the die and remove the shot.

Although there are some variations in the techniques, the major difference between die casting and injection molding is that die casting uses some kind of metal, often an aluminum alloy, as the raw material, while injection molding uses plastic or polymers.

Benefits of Plastic Injection Molding

  • Production is quicker due to more flexibility in the molding process
  • Plastic Injection molds can accommodate different plastic or polymer materials
  • Fillers can be used in plastic molds to increase strength
  • An efficient process with very accurate finishes

Benefits of Aluminum Die Casting

  • An efficient process with a high degree of accuracy
  • Complicated designs can be more easily cast
  • Produces higher-quality products with better tolerance that will last longer

Aluminum Die Casting vs. Injection Molding

Injection Molding allows you to produce a lot of parts very inexpensively.  After considering labor and material costs, it is important to keep in mind the cost of initial machines and any secondary equipment.

If accuracy and finish a high priority, or you make many complex parts in a short time frame, die casting is almost always the preferred option.  Remember if you are designing simpler parts, most people prefer the durability and quality in solid metal parts over plastic.

What is plastic molding?