Hot die forging is an important metal forming process, which is widely used in manufacturing parts with various complex shapes. In the process of hot die forging, the flow behavior of metal has an important influence on the forming accuracy and product quality. In this paper, the metal flow behavior and forming precision control during hot die forging are discussed.
In the process of hot die forging, the metal blank is heated to a suitable temperature and placed into the mold for plastic deformation. The flow behavior of metals is a key link in this process. The flow of metal is affected by many factors, including temperature, pressure, strain rate, mold structure, etc.
The flow behavior of the metal determines the final shape and internal organization of the forging. If the metal flow is not uniform, it may lead to defects such as shape distortion and loose internal organization of the forging. Therefore, controlling the flow behavior of metal is an important task in hot die forging process.
Forming accuracy is an important index to measure the quality of hot die forging products. To control the forming accuracy, it is necessary to start from the following aspects:
Mold design: The structural design of the mold directly affects the flow behavior of the metal and the shape of the final product. By optimizing the mold design, such as reasonably setting the radius and slope of the mold, the metal flow can be guided and the forming accuracy can be improved.
Process parameter control: The process parameters of hot die forging, such as temperature, pressure, strain rate, etc., have an important impact on the flow behavior of metal and forming accuracy. By precisely controlling these parameters, the uniform metal flow can be achieved and the forming accuracy of the product can be improved.
Numerical simulation and optimization: With the help of numerical simulation technology, it is possible to predict the flow behavior of metals during hot die forging and the forming accuracy of the final product. Through the simulation results, process parameters and mold design can be optimized, trial and error costs can be reduced, and production efficiency can be improved.
On-line monitoring and feedback control: On-line monitoring system is introduced in the process of hot die forging to monitor the metal flow behavior and the forming accuracy of the product in real time. Through feedback control, timely adjustment of process parameters to ensure the stability of product quality.
Metal flow behavior and forming precision control during hot die forging are the key links to ensure product quality and production efficiency. Through in-depth understanding of metal flow behavior, optimization of mold design, precise control of process parameters, combined with numerical simulation and on-line monitoring technology, high precision forming and quality control of hot die forging products can be achieved. This will promote the further development and application of hot die forging technology in modern manufacturing industry.
