Study on Deformation Coordination in Upsetting Forging Process of the Crank of Continuous Fiber Crankshaft for Marine
In upsetting forging process of the crank of crankshaft the defects such as lap and caving probably occurs since the bending and upsetting is not in good coordination. In this paper, aiming at 305 crankshaft for marine engine, the coordinative relation between bending and upsetting was thoroughly studied based on 3-step crank upsetting forging approach, i.e. bending-upsetting, upsetting and finish forming. Numerical simulation was carried out to find the reasonable stroke matches of bending and upsetting and physical experiment of using lead sample reduced at the ratio 1:6 in size was conducted to verify the match scheme gained from numerical simulation. The result found from numerical simulation is in good accordance with the one gained through experiment. The work in this paper provides theoretical basis for practice of upsetting forging technique of crank.
Xianghua Liu, Zhengyi Jiang and Jingtao Han
B. Wang et al., "Study on Deformation Coordination in Upsetting Forging Process of the Crank of Continuous Fiber Crankshaft for Marine", Advanced Materials Research, Vols. 418-420, pp. 1324-1329, 2012