What is the scope and characteristics of casting?

Sand casting: Scope of application: Hand-made molding: single-piece, small-batch and large-scale castings with complicated shapes that are difficult to use. Mechanical shape: Suitable for medium and small castings and various materials for mass production. Process characteristics: Manual: flexible, easy, but low efficiency, labor intensity, dimensional accuracy and surface quality. Machinery: high dimensional accuracy and surface quality, but the investment is large. Metal casting: Scope of application: Non-ferrous alloy castings produced in small batches or in large quantities, also used in the production of steel castings. Process characteristics: Precision casting, high surface quality, compact structure, good mechanical properties and high productivity. Investment Casting: Scope of application: Small and complex precision castings of various batches of cast steel and high melting point alloys, especially suitable for casting art and precision mechanical parts. Process characteristics: high dimensional accuracy, smooth surface, but many processes, labor intensity. Ceramic casting: Scope: molds and precision castings. Process characteristics: high dimensional accuracy, smooth surface, but low productivity. Low-pressure casting: Scope of application: Small batches, preferably large-volume large and medium-sized non-ferrous alloy castings, which can produce thin-walled castings. Process characteristics: The casting structure is dense, the process yield is high, the equipment is simple, and various casting molds can be used, but the production efficiency is low. Pressure casting: Scope of application: large and medium-sized small and medium-sized castings, thin-walled castings, and pressure-resistant castings. Process characteristics: castings have high dimensional accuracy, smooth surface, compact structure, high productivity and low cost. However, die casting machines and castings are costly. Centrifugal casting: Scope of application: small batch to large batch of rotating body castings, pipe fittings of various diameters. Process characteristics: castings have high dimensional accuracy, smooth surface, compact structure and high productivity. Continuous casting: Scope of application: Long-form castings with fixed sections, such as steel ingots, steel pipes, etc. Process characteristics: compact structure, good mechanical properties and high productivity. Lost Foam Casting: Scope: A variety of complex alloy castings of different batch sizes. Process characteristics: casting dimensional accuracy is high, casting design freedom is large, the process is simple, but the pattern burning affects the environment.

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