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What is the difference between die casting & injection moulding?
Plastic Injection Molding and aluminum die casting are similar in a lot of ways:
* Both require a mold or tool to produce parts.
* The tooling cost is very similar in both industries.
* Both processes inject material into a mold to make parts.
* Both processes can make hundreds or thousands of parts every day.
Plastic Injection Molded Parts
Advantages
* Plastic parts are produced at a lower temperature than aluminum parts, plastic melts at only a few hundred degrees Fahrenheit
* Plastic Parts weigh less than aluminum die casting parts.
Disadvantages:
* Plastic is not typically biodegradable
* Plastic parts require metal inserts to hold a thread for screws.
* Plastic does not block EMI/RF waves
* Plastic Parts are not as strong.
Aluminum Die Casting Parts
Disadvantages
* Aluminum parts weigh more than plastic.
* Aluminum parts are produced in only one color and need paint or powder coat for color.
Advantages
* Aluminum naturally shieds EMI/RF waves.
* Holes can be directly threaded into the parts.
* Features can be machined into aluminum.
* Aluminum has great thermal transference properties.
* Aluminum is a natural conductor of electricity.
* Aluminum material is environmentally friendly and can be recycled easily when done.
* All aluminum alloys (360, 380, 383, and 413) are made from recycled materials.
* Aluminum parts are stronger than plastic