What are the methods of forging blanks? Forging is an important metal processing technology, which is widely used in various fields, especially military industry, aerospace, automobile manufacturing, etc. The quality of forging blanks directly affects the performance of the final product. Here are the Let’s introduce the forging blank processing method!
1. Free forging
Free forging is the most basic forging method. Its characteristic is that the workpiece deforms freely between the upper and lower anvils and is not restricted by the mold. Open forging is suitable for producing forgings with simple shape, small batch size and large size. During the free forging process, workers can change the shape and size of the workpiece at any time as needed, and the flexibility is high. However, free forging has high technical requirements for workers and relatively low production efficiency.
2. Die forging
Die forging is a method of forging in a mold. According to the structure of the mold, die forging can be divided into open die forging and closed die forging. The upper and lower parts of the mold of open die forging are not completely closed, and are suitable for producing forgings with complex shapes and large sizes; the upper and lower parts of the mold of closed die forging are completely closed, which can accurately control the shape and size of forgings, and are suitable for producing high-precision, Large quantities of forgings. The advantages of die forging are high production efficiency and good forging quality, but the mold manufacturing cost is high and it is suitable for mass production.
3. Squeeze
Extrusion is a forging method in which a metal blank is passed through a hole or cavity in a mold so that it deforms under pressure and fills the cavity. Extrusion is suitable for producing forgings with complex shapes and uneven wall thickness. During the extrusion process, the metal blank is subjected to greater pressure, which can improve the structure and properties of the material. However, extrusion equipment is complex and requires high operating skills.
4. Rolling
Rolling is a forging method that uses rollers to roll metal blanks. Rolling is mainly used to produce plates, strips, profiles, etc. During the rolling process, the metal blank undergoes plastic deformation under the continuous action of the rollers, reducing the thickness and increasing the length. The rolling production efficiency is high, the cost is low, and it is suitable for large-scale production.
5. Spinning
Spinning is a method that uses a rotating mold and mandrel to deform the metal blank under pressure in a local area. Spinning is suitable for producing forgings in the shape of a rotary body, such as wheel discs, wheel hubs, etc. The advantage of spinning is high material utilization and the ability to produce forgings with complex shapes, but the equipment investment is large and the operating technology requirements are high.
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Methods for forging blanks include free forging, die forging, extrusion, rolling and spinning. Each of these methods has its own characteristics and is suitable for different production needs and process requirements. In actual production, the appropriate forging blank method should be selected based on factors such as the shape, size, batch size, and material properties of the forgings.