The comparison of die casting and other manufacturing process


The comparison of die casting and other manufacturing process

There are many different kind of manufacturing process for metal and plastic, here below we would like to share few main manufacturing process and a simple comparison with die casting process.

CNC Machining
CNC machining is a quick and accurate manufacturing process, widely used to produce metal or plastic components. Compared with CNC machining, die castings can be made to closer dimensional limits and with thinner sections; die castings can be produced at higher volume with less manual labor; have smoother surfaces and usually cost less per die casting. But CNC machining requires no tooling costs, as die casting process needs casting tooling for molding.

Plastics Injection Molding
Compared with plastic injection moldings, die castings are stronger, stiffer, more stable dimensionally, more heat resistant, and are far superior to plastics on a properties/cost basis. They help prevent radio frequency and electromagnetic emissions. For chrome plating, die castings are much superior to plastic. Die castings have a high degree of permanence under load when compared to plastics, and are completely resistant to ultra-violet rays, weathering, and stress-cracking in the presence of various reagents. Manufacturing cycles for producing die castings are much faster than for plastic injection moldings. Plastics, however, may be cheaper on a unit volume basis, may have color inherent properties which tend to eliminate finishing, are temperature sensitive, and are good electrical insulators.

Metal Stamping
Compared with metal stamping, die casting can often replace several parts. Die castings frequently require fewer assembly operations; can be held within closer dimensional limits; can have almost any desired variation in section thickness; involve less waste in scrap; are producible in more complex shapes and can be made in shapes not producible in stamped forms. Stampings, on the other hand, have properties of wrought metals; can be made in steel and in alloys not suitable for die casting, and in their simpler forms, are produced more rapidly, and may weigh less than die castings.

Sand Castings
Compared with sand castings, die castings require much less machining; can be made with thinner walls; can have all or nearly all holes cored to size; can be held within much closer dimensional limits; are produced more rapidly in dies which make thousands of die castings without replacement; do not require new cores for each casting; are easily provided with inserts die cast in place; have smoother surfaces and involve much less labor cost per casting. Sand castings, on the other hand, can be made from ferrous metals and from many non-ferrous alloys not suitable for die casting. Shapes not producible by die casting are available in sand castings; maximum size can be greater; tooling cost is often less and small quantities can be produced more economically.

Metal Forgings
Compared with metal forgings, die castings can be made more complex in shape and have shapes not forgeable; can have thinner sections; can be held to closer dimensions and have coring not feasible in forgings. Forgings, however, are denser and stronger than die castings; have properties of wrought alloys; can be produced in ferrous and other metals, and in sizes not suitable for die castings.

Based on different manufacturing demands, you can choose one of those manufacturing process mentioned above and do feel free to contact us once you have any die casting process to run, we will provide you most economical die casting solution with high quality products.



Mr. Yu, the founder of Eco die casting manufacturer. Focus on alloy die casting over 20 years. Offer high quality die casting service, 30% cheaper than other die casting companies.

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