What is the difference between forging and casting? Their uses and their respective advantages and disadvantages

1. forging, casting of distinction:

Words have different meanings:

Forging: With hammering and other methods, the metal material in the plastic state becomes a workpiece with a certain shape and size, and changes its physical properties.

Casting: the metal is melted into a liquid after pouring into the mold, after cooling solidification, cleaning to obtain the desired shape of the casting processing method. Can be made into complex shapes of all kinds of objects.

2. The production process is different:

Forging: It is a processing method that uses forging machinery to apply pressure to metal blanks to produce plastic deformation to obtain forgings with certain mechanical properties, certain shapes and sizes. Forging (forging and stamping) is one of the two major components.

Casting: It is a method of casting liquid metal into a casting cavity suitable for the shape of the part, and after cooling and solidification, to obtain the part or blank.

2. forging, casting use:

Forging is generally used in the processing of forgings of a certain shape and size.

Casting is a more economical blank forming method, which is generally used in parts with complex shapes.

3. forging, casting advantages and disadvantages:

Forging advantages:

Forging can eliminate the defects such as loose casting in the smelting process and optimize the microstructure. At the same time, due to the preservation of the complete metal flow line, the mechanical properties of forgings are generally better than castings of the same material. Related machinery in high load, severe working conditions of important parts, in addition to the shape of a relatively simple available rolling plates, profiles or weldments, the use of forgings.

Casting advantages:

Parts with complex shapes can be produced, especially blanks with complex cavities.

2. Wide adaptability, industrial commonly used metal materials can be cast, a few 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.

The shape and size of the casting are very close to the parts, which reduces the amount of cutting and belongs to non-cutting processing.

Widely used, 40% to 70% of agricultural machinery and 70% to 80% of the weight of machine tools are castings.

Forging Disadvantages:

In the forging production, prone to trauma accidents.

Casting Disadvantages:

1. The mechanical properties are not as good as forgings, such as coarse organization and many defects.

2. In sand casting, single piece and small batch production, the labor intensity of workers is high.

3. The casting quality is unstable, the process is many, the influencing factors are complex, and many defects are easy to produce.