| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a hot-forged product in which a variance in hardness and strain is not caused and as a result, the produced cost of various kinds of parts produced by using the hot-forged product is reduced. SOLUTION: In the method for producing the hot-forged product 11, cooling is applied after forging a plurality number of times in order by using a plurality of dies. In the last forging (sizing) after the plurality number of forging times, a steel-made intermediate blank (annular blank 6) is produced by using a die for last forging (die for sizing) set to a lower temperature than the blank temperature just before this forging. Thereafter, this intermediate blank is cooled by conveying into a soaking chamber 8 set at the lower temperature than the temperature of the intermediate blank in a state (die 7 with the annular blank) in which the intermediate blank is attached to the die for last forging (die for sizing). COPYRIGHT: (C)2004,JPO
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