Forging technology is a processing method that changes the shape of metal materials through pressure to obtain the desired shape and size. According to different application scenarios and product requirements, forging processes can be divided into the following types:

1、 Free forging

Free forging is a basic forging method characterized by the free deformation of metal between upper and lower cutting boards. This method is suitable for single piece, small batch production, as well as the manufacturing of large forgings. During the free forging process, craftsmen can adjust the shape of the metal as needed, which provides high flexibility.

2、 Die forging

Die forging, also known as model forging, is the process of placing a heated metal billet in a fixed mold and applying pressure to deform it, resulting in a forged piece that matches the shape of the mold. This method can produce complex shaped parts in large quantities, improving production efficiency.

3、 Rolling ring

The ring rolling process is mainly used to manufacture seamless annular parts, such as bearings, gears, etc. This method involves rolling the circular billet on a rolling mill, gradually changing its shape, and ultimately obtaining the desired circular component. The ring rolling process has the advantages of high precision and high efficiency.

In addition to the common forging processes mentioned above, there are also special forging techniques, including isothermal forging, powder forging, etc., which are suitable for processing specific needs or high-performance materials.

Next, we will provide a detailed introduction to the six basic steps of the forging process:

1. Material preparation

Material preparation is the first step in the forging process, involving selecting appropriate raw materials and cutting them into suitable sizes. The quality and size of raw materials are crucial to the quality of the final product.

2. Heating

The heating process is to heat the metal billet to an appropriate temperature to improve the plasticity of the metal and reduce deformation resistance, facilitating subsequent forming operations. The heating temperature and time need to be strictly controlled to ensure the grain structure and properties inside the metal.

3. Forming

Forming is the core step of forging process, which applies pressure or impact force to cause plastic deformation of metal, thereby obtaining the desired shape. During the forming process, attention should be paid to avoiding problems such as overheating, overcooling, or rapid deformation of the metal to ensure product quality.

4. Cooling after forging

Post forging cooling is the process of slowly cooling the forged parts in an appropriate environment to avoid excessive stress and cracking inside the metal. During the cooling process, it is necessary to control the cooling rate to prevent changes in the metal structure.

5. Heat treatment after forging

Post forging heat treatment is aimed at eliminating residual stresses generated during the forging process, refining grains, and improving the mechanical properties of metals. Common heat treatment methods include annealing, normalizing, quenching, etc.

6. Inspection

The final step is inspection, which includes checking the dimensions, appearance, performance, and other aspects of the forgings to ensure that the product meets design requirements and industry standards. For non-conforming forgings, they need to be repaired or scrapped.

In summary, there are various types of forging processes, each with its own applicable scenarios and advantages. The six steps of forging process are key links to ensure product quality, and each step needs to be strictly controlled to achieve optimization of forging process and improvement of forging quality.