In this paper, the influence of optimization of hot die forging process parameters on improving the quality uniformity of hot die forging is studied. The basic principle and flow of hot die forging are introduced first, and then the key factors affecting the quality uniformity of hot die forging are analyzed. Then, this paper puts forward the optimization strategy for these factors, and verifies the optimization effect through experiments. Finally, the significance of optimizing process parameters to improve the quality uniformity of hot die forging is summarized.
Hot die forging is an important metal forming process, widely used in automotive, aerospace, energy and other fields. In the process of hot die forging, the metal blank is plastic deformed under the action of the die to obtain the required shape and size of the forging. However, due to the unreasonable setting of process parameters, hot die forging often has the problem of uneven quality, such as hardness difference, internal defects and so on. Therefore, optimizing the process parameters of hot die forging and improving the quality uniformity of hot die forging are of great significance for improving product quality and reducing production cost.
Hot die forging process mainly includes three stages: heating, deformation and cooling. In this process, the metal billet temperature, deformation rate, deformation degree and other technological parameters have an important effect on the quality uniformity of the forging. Among them, the heating temperature affects the plasticity and deformation ability of the metal, the deformation rate and deformation degree affect the grain size and internal structure of the metal.
In order to improve the quality uniformity of hot die forging parts, the following optimization strategies are proposed: Firstly, through numerical simulation and theoretical analysis, the appropriate heating temperature range is determined to ensure that the metal blank has good plasticity and deformation ability; Secondly, the deformation rate and degree are optimized to obtain uniform grain size and internal structure. Finally, by controlling the cooling speed and cooling method, the internal stress and defects are reduced.
In order to verify the effectiveness of the optimization strategy, comparative experiments are carried out in this paper. The experimental results show that with optimized process parameters, the difference of hardness, internal defects and quality uniformity of hot die forging are significantly reduced. At the same time, compared with before optimization, the optimized hot-die forging also shows better performance in mechanical properties, wear resistance and so on.
By optimizing the process parameters of hot die forging, the quality uniformity of hot die forging can be effectively improved. Proper heating temperature, deformation rate and deformation degree, and control of cooling speed and cooling mode are the keys to achieve the quality uniformity of hot die forging. The optimized hot-die forging has lower hardness differences, fewer internal defects, and better mechanical properties and wear resistance. This is of great significance for improving the quality of hot die forging products, reducing production costs and promoting the development of related industries. In the future research, the optimization method of hot die forging process parameters under multi-factor coupling can be further discussed to achieve more efficient and accurate hot die forging production.
