What are the advantages and disadvantages of forging and casting

Forging advantages:
Through forging, the defects such as cast loose generated in metal smelting process can be eliminated, and the microstructure can be optimized. At the same time, the mechanical properties of forging parts are generally better than those of casting parts of the same material because of the intact metal streamline. For the important parts with high load and severe working conditions in the related machinery, mostly are forging parts except for rolled plates, profiles or welded parts with relatively simple shapes.

Advantages of casting:
1. It can produce casting parts with complex shape, especially rough parts with complex inner cavity.
2. It has wide adaptability. Metal materials commonly used in industry can be cast, from several grams to hundreds of tons.
3. The source of raw materials is wide and the price is low, such as scrap steel, scrap parts, chips, etc.
4. The shape and size of the casting parts are very close to the parts, which reduces the cutting amount and belongs to non cutting processing.
5. It is widely used. 40% - 70% of the weight of agricultural machinery and 70% - 80% of the weight of machine tools are castings.

Forging disadvantages:
In forging production, it is easy to cause injury accidents.

Casting disadvantages:
1. Mechanical properties of casting parts are inferior to forging parts, such as coarse structure and many defects.
2. In sand casting, single piece, small batch production, high labor intensity of workers.
3. The casting quality is not stable, there are many processes, the influencing factors are complex, and many defects are easy to occur.