Why is forging more and more important?

In the process of plastic forming, cracks often appear on the metal surface or inside, and even lead to fracture or scrap of the forgings of Hangsheng Forging Company. Therefore, it is very necessary to study the physical nature of cracking phenomenon and various factors affecting cracking to further improve the plastic deformation performance of metal and prevent cracking of the workpiece. Fracture can be classified from many angles. From the perspective of macroscopic phenomenon, it can be roughly divided into brittle fracture and ductile fracture in terms of the deformation before fracture. The brittle fracture has no plastic deformation or only small plastic deformation before fracture, and the fracture is relatively flat and slightly glossy. The ductile fracture underwent significant plastic deformation before fracture, and the fracture was fibrous and dark. 42CrMo steel, the material studied in this chapter, has a ductile fracture form, so it refers to ductile fracture without special instructions below.

Ductile fracture of metal generally refers to the occurrence of micro-defects, such as micro-cracks and micro-voids, in metal materials under the action of external loads through violent plastic deformation. Then these micro-voids will nucleate, grow, converge and lead to gradual deterioration of the material. When a certain degree of strain is reached, macro-fracture of the material will occur. Its main characteristics are obvious macroscopic plastic deformation, such as excessive swelling of containers, excessive elongation or bending of forgings, fracture size also has a large change compared with the original size.
Forging production is one of the main processing methods to provide blank of mechanical parts in machine manufacturing industry. Through the forging of Hangshenghe Forging Company, not only the shape of mechanical parts can be obtained, but also the internal organization of metal can be improved, and the mechanical and physical properties of metal can be improved. In general, the important mechanical parts with large force and high requirements are mostly manufactured by forging. Such as turbine generator shaft, rotor, impeller, blade, guard ring, large hydraulic press column, high pressure cylinder, rolling machine roll, internal combustion engine crankshaft, connecting rod, gear, bearing, and national defense industry artillery and other important parts, are forged production.

Therefore, forging production is widely used in metallurgy, mining, automobile, tractor, harvesting machinery, petroleum, chemical industry, aviation, aerospace, weapons and other industrial sectors, is in daily life, forging production also has an important position.

In a sense, the annual output of forgings, the proportion of die forgings in the total output of forgings, as well as the size and ownership of forging equipment and other indicators reflect an industrial level to a certain extent.

this is open die forging produced by tongxin precision forging company