METHOD FOR MANUFACTURING FORGED CRANKSHAFT

• Main Authors: HORI, Masao, OKUBO, Junichi, TAMURA, Kenji, NAKANO, Ryusuke, YOSHIDA, Kunihiro, HWANG, Samsoo
• Format: Patent
• Language: English; French; German
• Published: 24.01.2018
• Subjects: FORGE FURNACES; FORGING; HAMMERING; MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES,RIVETS, BOLTS OR WHEELS; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PRESSING METAL; PUNCHING METAL; RIVETING; TRANSPORTING

A forged crankshaft production method includes a first preforming step, a second preforming step, and a final preforming step. In the second preforming step, an initial blank (23) is pressed by a first pair of dies (40) to be formed into an intermediate blank. The first pair of dies (40) includes we...