For steel parts with high mechanical strength requirements, forging blanks are generally used. There are two types of forgings: free forging and die forging. Free forging forgings can be obtained by hand forging (small blanks), mechanical hammer forging (medium blanks) or press forging (large blanks). This forging has low precision, low productivity, large machining allowance, and the structure of the parts must be simple, suitable for single-piece and small-batch production, as well as manufacturing large-scale forgings.
The precision and surface quality of die forgings are better than those of free forgings, and the shape of the forgings can also be more complex, so the machining allowance can be reduced. The production efficiency of die forging is much higher than that of free forging, but it requires special equipment and forging dies, so it is suitable for small and medium-sized forgings with large batches.
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