| 摘要 |
A forged product having thick end parts, and a thin part between the thick parts, is formed by extruding a forging stock such that the cross section of the forging stock varies along the direction of extrusion, wherein in any cross section in a direction perpendicular to the direction of extrusion, the forging stock has two thick end parts, a thin part intermediate the end parts and transitional parts with varying thickness between the thin part and each of the thick end parts; cutting the forging stock in the direction perpendicular to the direction of extrusion to form cut portions; and forging each of the cut portions such that the thick end parts of the cut portions form the thick end parts of the forged product and the thin part of the cut portions forms the thin part of the forged product.
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