Casting refers to the process in which metal is heated until molten and then poured into a mold; it is well-suited for manufacturing parts with complex geometries.
Classification of Casting Methods:
Sand Casting: Characterized by low costs and suitability for small-batch production, this method allows for the creation of complex shapes, though it may necessitate extensive post-processing operations.
Investment Casting (Lost-Wax Method): This manufacturing technique offers exceptional consistency and precision, and is also capable of producing intricate shapes. It delivers superior surface finishes at relatively low processing costs, making it ideal for mass production.
Gravity Casting: Used for manufacturing complex shapes where higher dimensional tolerances are acceptable. Due to the inherent nature of the process, the finished product typically requires no post-processing; however, its cost-effectiveness is realized only within the context of mass production. Die Casting: Involves high initial processing costs, making it economically viable only in mass production scenarios. Nevertheless, the cost of the final product remains relatively low, and the dimensional tolerances are generally higher. It is suitable for producing parts with thin wall sections.
Centrifugal Casting: An ideal method for manufacturing small parts, commonly employed in jewelry making. Rubber molds can be utilized to help reduce processing costs.
Directional Solidification: Enables the production of exceptionally robust, super-heat-resistant alloys with superior fatigue resistance. The molten metal is poured into a mold and subjected to strictly controlled heating and cooling cycles to eliminate even the most minute defects. Plastic Forming Section: Plastic Forming: Refers to the process of heating metal to high temperatures to reshape it; this is typically a labor-intensive manufacturing process.
