Process flow of hot die forging
Thermal die forging is a process of forging metal billet at high temperature. It is widely used in manufacturing industry to produce various parts with complex shapes and high precision requirements. The process flow of hot die forging will be detailed below.
- Raw material preparation
First of all, you need to choose the right raw materials, usually a variety of metal materials, such as steel, aluminum, etc. These raw materials shall have good malleability and quality. Before putting into production, raw materials need to be tested to ensure that their chemical composition and physical properties meet the requirements.
- heat
Put the qualified billet into the heating furnace for heating. The temperature and time of heating need to be strictly controlled to ensure that the billet reaches the appropriate forging temperature, while avoiding a decrease in material properties due to excessive heating. In general, the heating temperature depends on the type of material and the forging requirements.
- Mold preparation
Prepare the corresponding molds according to the shape and size of the parts to be produced. Mds are usually made of high-strength alloy steel and need to be carefully designed and manufactured to ensure they can withstand great pressure and friction during the forging process. Before use, the mold needs to be preheated and lubrication to reduce wear and improve service life.
- forging operation
When the billet is heated to an appropriate temperature, it is quickly transferred to the forging equipment and put into the preheated mold for forging. During the forging process, huge pressure is applied by the press or forging hammer to plastic deform the billet, and gradually fill the mold cavity for the formation of the required part shape. The forging process may require multiple strikes or pressurization to ensure the dimensional accuracy and internal quality of the parts.
- Cut the edge and make the punch
After the forging is completed, there may be excess flying edges and skin on the parts, which need to be removed by edge cutting and punching processes. These processes are usually done using specialized edge-cutting presses and punching equipment.
- Heat treatment
In order to improve the organization and performance of parts, forged parts usually need heat treatment, such as annealing, ignition, quenching and tempering. The selection of the heat treatment process depends on the material and use requirements of the parts.
- Surface treatment
After heat treatment, the parts may also need surface treatment, such as shot blasting, pickling, etc., to remove surface oxide and impurities, and improve the surface quality and corrosion resistance of the parts.
8, quality inspection
Finally, a comprehensive quality inspection of the forged parts, including dimensional accuracy, surface quality, internal organization and mechanical properties. Only the qualified parts can be put into use or enter the next process.
In short, the process of hot die forging is a complex and rigorous process, and each link needs to be strictly controlled and carefully operated to produce high-quality forgings. With the continuous progress of technology, the hot die forging process is also developing and improving, which provides strong support for the development of manufacturing industry.