Transactions of Materials and Heat Treatment

Title：Numerical simulation of crankweb counterweight mounting surface for continuous grain flow crankshaft

Authors： Li Liuru Du Shaogui

Unit： Kocel CSR Foundry Co. Ltd. CRRC Ziyang Co. Ltd.

KeyWords： continuous grain flow crankshaft counterweight mounting surface numerical simulation

ClassificationCode：全纤维曲轴锻件；平衡块安装面；数值模拟

year,vol(issue):pagenumber：2016,41(2):148-152

Abstract：

The underfill defect is easy to appear on the mounting surface of crankweb when the crankshaft of high speed diesel engine is forged by bending and upsetting method. For the planar mounting surface of crankweb 16V240, a crankweb forge piece with four different shapes of mounting surface was designed, and their forging processes with RR forging method were simulated by FE method respectively. The influences of the four shapes of counterweight mounting surface on the forging quality of crankweb were analyzed by the flow velocity and velocity vector of metal blank during the forging process. The simulation results show that the convergence shape of mounting surface can avoid the underfill defect efficiently during the forging process. New die was optimally designed in accordance with the simulation results of plan No.4, and the extrusion test of single crank was carried out, which shows that the testing result is basically identical with the numerical simulation result.

Funds：

李六如（1978－），男，硕士，工程师

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