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Research on Forged Discs Manufacturing Process
With the continuous advancement of science and technology, the forged discs manufacturing is also being continuously optimized, and it is also used in more and more fields. In ancient China, forging discs was a handcrafted art that was often used to make ornaments that were used in ceremonial music performances and dance performances, among other things. Today, forged discs are a practical tool used to make vital equipment such as turbine engines, steam turbines, heavy trucks, aircraft wings and auto parts.
Forged discs play different roles in different fields, and the manufacturing process will be different. Its manufacturing process is very complicated, which requires us to continuously innovate, research and optimize.
Forged Discs Pretreatment Process
Before forging, in order to ensure the quality and performance of the material, pretreatment must be carried out. The pretreatment process includes steps such as material selection, surface pretreatment, heat treatment and blank preparation.
(1) Material selection
Before manufacturing forged discs, we need to select the required metal materials from the aspects of quality, hardness, corrosion resistance, plasticity, processability and heat resistance, etc. The most important thing is to select materials according to customer needs.
There are many types of materials for manufacturing forged discs, such as high-speed steel, stainless steel, alloy steel, etc. And using different materials, the chemical composition, mechanical properties and mechanical properties of the forged discs produced will be different.
(2) Surface pretreatment
After selecting the metal material, cut the material into a suitable shape and size, and remove foreign matter such as oxides and grease on the surface of the material, which can improve the fatigue resistance of the material and prolong its service life.
Surface pretreatment is carried out in the forged discs manufacturing, the purpose of which is to make the material have the required mechanical properties and structural characteristics, and to avoid or reduce the occurrence of defects during processing.
Forged Discs Forging Process
Before discs forging, put the material into a heat treatment furnace and heat it to a certain temperature to make it reach the temperature required for forging, which generally needs to be controlled below the melting point of the material. In the forged discs manufacturing process, the forging process is relatively complicated, and the methods of free forging and die forging can be used. In the forging process, attention should be paid to controlling the temperature, strength and speed to ensure that the grains of the metal material are refined and homogenized, thereby improving the strength and toughness of the material.
The difference between free forging and die forging is whether it is put into the mold for forging. Free forging uses impact or pressure to give the material placed on the forging table the desired shape. Compared with die forging, free forging is easier to operate and has better versatility. Die forging is a method of putting preheated forgings into a certain mold for heating, forging and cooling. It can control the shape well, with high precision and good surface quality. Die forging is commonly used to manufacture forged discs.
Forged Discs Heat Treatment Process
In the forged discs manufacturing process, the heat treatment process includes tempering, quenching, etc. During the first tempering, the material reaches a certain hardness and strength while reducing brittleness. The manufacture of forged discs needs to be tempered twice, and after the second tempering, it should be put into water for rapid cooling to achieve the purpose of improving the toughness and hardness of the forged discs. Forged discs are usually quenched at 270~300°C, the comprehensive effect is relatively good, good toughness and strength can be obtained, and the deformation of quenching is reduced. If the residual heat of forging can be used for quenching, and the amount of deformation, temperature and time of stopping forging can be well controlled, it can save energy and reduce consumption. Finally, precipitation strengthening treatment can improve its strength and hardness.
The forged discs manufacturing process is constantly developing and innovating. The introduction of some new materials, new processes, and new manufacturing methods has significantly improved the performance and quality of forged discs, and the manufacturing efficiency of forged discs has also become higher.