| 摘要 |
PROBLEM TO BE SOLVED: To provide a forging die which can manufacture the product in one forging process to improve the productivity and does not cause a molding trouble such as cracking even in the manufacture of a forged product having, at the forward front end site, a corner part having an acute angle in horizontally sectional form formed by forward extrusion. SOLUTION: The forging die 11 is used in the manufacture of a forged product 9 having, at the front end site 93, a corner part having an acute angle in horizontally sectional form formed by extruding a forging material 5 in a downward and forward direction. A die 34 for applying back pressure for pressing the forward front end face 93b from the downward part waits for the forging material 5 being extruded at a position below a start position M, at which the formation of the forward front end site 93 is started, by a predetermined distance D, and a region in which a lubricant accumulates is formed. COPYRIGHT: (C)2010,JPO&INPIT
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