1400×308×294mmBasic size
Process characteristics:weight: 10% lighter than forged steel; cost: 15% lower than forged steel; product features: ductile iron crankshaft for marine & G-drive engines.
Material requirements:material designation: QT900-6; tensile strength of the body ≥900 Mpa; elongation: ≥5.5%; hardness: HB250-HB310; strengthening process: undercut fillet rolling + journal quenching.