Forging is a process by which metal is plastic deformed and its shape and size are changed under the action of external forces. Forging can be divided into several types such as free forging, die forging and impact forging, and different types are suitable for different parts.

The first is free forging. Free forging is suitable for the manufacture of large size, simple shape parts. The process is as follows: the metal is first heated to its plastic state, and then the metal is placed on the forging machine, and the force is applied to the metal to plastic deformation. After the metal has cooled, the finished product can be removed. In the process of free forging, it is necessary to control the heating temperature and forging strength to ensure the mechanical properties and appearance quality of the parts.

The second is die forging. Die forging is suitable for manufacturing parts with higher dimensional accuracy and more complex shapes. The process is as follows: the mold is first made, and then the metal is heated to its plastic state, the metal is placed on the mold, the force is applied to fill the mold cavity, and the finished product is removed after cooling. In the die forging process, the design and manufacture of the die is very important, and the heating temperature and the application force need to be strictly controlled to obtain the ideal part size and surface quality.

Finally, the forging. Swaging is suitable for manufacturing parts with high dimensional accuracy and thin walls. Its process is as follows: First, the metal is heated to its plastic state, and then the metal is placed in the mold, and a certain impact force is applied to make the metal deformed in the mold, and the finished product is removed after cooling. In the forging process, it is necessary to control the heating temperature, impact force and impact speed to ensure the accuracy and surface quality of the parts.

To sum up, casting and forging are common metalworking methods, and they each have their own characteristics when making parts. By mastering different skills and process parameters, parts quality and production efficiency can be improved.