This paper introduces the basic technology and application of hot die forging production. Firstly, the definition and process flow of hot die forging are described, and then the key technology of hot die forging production is described in detail, including die design, material selection, process parameter control, etc. Then, this paper discusses the application of hot die forging in various fields, and analyzes its advantages and limitations. Finally, the future development prospect of hot die forging production is prospected.
Hot die forging is a forming process that produces the desired forgings by heating a metal blank and then applying pressure in the die to deform and fill the mold shape. Hot die forging has excellent mechanical properties, good dimensional accuracy and surface quality, and is widely used in automotive, aerospace, energy, machinery manufacturing and other fields. This paper will introduce the basic technology and application of hot die forging in detail.
Basic technology of hot die forging production
Die design: Die is the core of hot die forging production. Reasonably designed mold should have good wear resistance, fatigue resistance and thermal stability. At the same time, the structural design of the mold needs to consider the metal flow, deformation uniformity and demoulding convenience.
Material selection: Choosing the right metal material is critical to the performance of hot die forging. Commonly used materials include carbon steel, alloy steel, stainless steel, aluminum alloy, copper alloy, etc. Material selection should consider mechanical properties, processing properties, cost and environmental impact.
Process parameter control: temperature, pressure, speed and other process parameters in the process of hot die forging have a significant impact on the quality of forging. Precise control of these parameters can ensure full deformation of the metal billet, reduce internal defects, and obtain the desired microstructure and mechanical properties.
Hot die forging application overview
Automotive industry: Hot die forging is widely used in the automotive industry, such as engine connecting rod, crankshaft, steering knuckle and other key components. These forgings need to withstand high loads and complex stresses, and the hot die forging process can meet their high strength and durability requirements.
Aerospace: The aerospace field has extremely high requirements for material performance, and hot die forging can meet the requirements of light weight, high strength and high temperature resistance, so it is widely used in aircraft engine parts, turbine blades and other key components.
Energy field: In the field of energy, hot die forging forgings are used to manufacture key equipment such as oil drilling equipment and nuclear power plant reactor pressure vessels, which require excellent mechanical properties and corrosion resistance.
Advantages and limitations of hot die forging
Advantages: hot die forging forging has excellent mechanical properties, such as high strength, wear resistance and fatigue resistance; High dimensional accuracy, good surface quality; High production efficiency, suitable for mass production.
Limitations: Hot die forging process has higher requirements for equipment and molds, and the investment cost is larger; Metal materials may have oxidation, decarbonization and other problems in the heating process, which will affect the quality of forging.
With the continuous progress of science and technology, hot die forging technology will continue to develop. The future direction includes: first, improve the level of mold design and manufacturing to achieve higher precision and more complex shape forging production; The second is to develop new high-performance materials to meet more demanding application scenarios; Third, promote digital and intelligent production technology to improve production efficiency and resource utilization.
In this paper, the basic technology and application of hot die forging are summarized in detail. As an important metal forming process, hot die forging has wide application prospects in various fields. By continuously improving the level of key technologies and overcoming limitations, hot die forging forging production will usher in a better future.
