Compared to free forging, die forging can produce more complex shapes and more accurately sized forgings, with higher production efficiency. It allows for the mass production of forgings with identical shapes and sizes, making it convenient for subsequent machining processes to utilize automatic machines and production lines. Die forging results in a directional fiber structure, or flow lines, within the forging. By selecting appropriate die forging processes and molds, aligning the flow lines with the forging's外形 can significantly enhance the mechanical properties of the forgings. However, die forging requires molds, which must be made from alloy tool steel. The mold cavity shapes are complex, demanding high precision, extensive machining, a long production cycle, and high costs. Therefore, die forging is generally suitable for large-scale production or for cases where the shapes and properties of the forgings are highly specified, even if the batch sizes are not large.
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