Casting and Molding are both practices that can come in handy for industrial and personal reasons. The two practices have certain similar aspects to them, but their key differences make them suitable for specific jobs,
The main difference between casting and molding is the material that is used for both practices. Even though, in both cases, the melted material goes into the mold to take the final form, casting typically uses metals, while plastics are used for molding. Other factors that separate the two practices involve; the quality of results, the expenses of both the processes, the time that each process requires, and the different products that can be made using the practices.
We have only given you a brief rundown of the differences; to understand them in more detail, keep reading ahead.
What Is Metal Casting?
Metal casting is a process whereby molten metal or metal alloy is poured into a frame that is typically made of wood or silicon. The metal takes the shape of the frame.
What Are Different Types Of Casting?
The most popularly used type of casting is die casting. This also has two categories.
- Hot Chamber Die Casting: The metal is heated and melted inside the casting chamber.
- Cold Chamber Die Casting: Typically used for metals with high melting points. The metal is first liquified separately before being used.
What Is Molding?
In molding, the plastic is injected into a metal form or frame. The frame gives the product its final shape.
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What Are Different Types Of Molding?
- Thin Wall Molding: In this process, the walls of the frame are kept as thin as possible
- Gas-assisted injection molding: A gas is used to create a hole in the mold; this is done to prevent the plastic from dislocating during the injection process.
What Are The Main Differences?
The two practices are used for different things because they are inherently different in nature.
They Make Use Of Different Material
Metal casting is used to create metal objects or objects made of metal alloy. The frame is usually made of any hard substance like wood. In the end, the frame is removed.
While Molding is used to make plastic products. The frame is made of metal.
The Time duration And Expenses Are Different
Molding takes less time because, in the practice of casting, the metal needs to be melted first before being cast. However, casting is less expensive than molding because molding requires more delicate tools.
Difference In Durability
The results of molding may not be as durable as that of casting. That is because casting uses strong metals instead of plastic. The result of molding is often more intricate and precise than molding.
Conclusion
Since the two practices are different in terms of their materials, their durability, and the expenses that go into them, their uses are also different. Casting is generally not used in mass production; molding is ideal. Either way, manufacturers consider these factors before determining what practice they want to adopt.
