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运用DEFORM 3D软件对汽车发动机连杆热锻成形进行了数值模拟,研究了不同始锻温度、模具预热温度、模具速度及摩擦系数对连杆热锻成形的载荷、等效应力及金属流动特性的影响。结果表明:随着始锻温度增加,热锻连杆最大成形载荷逐渐减小,最大等效应力减小,而最小等效应力和金属最大流动速度增加。模具预热温度越高,最大成形载荷越小。随着模具运动速度增加,热锻连杆最大等效应力先减小后增加,而最小等效应力则先增加后减小,金属最大流动速度逐渐增加。随着摩擦系数增加,热锻连杆最大等效应力逐渐增加,而最小等效应力基本不变,金属最大流动速度逐渐减小。
DEFORM 3D software was used to simulate the hot forging process of automobile engine connecting rod. The effects of different initial forging temperature, mold preheating temperature, mold speed and friction coefficient on the hot forging forming load, equivalent stress and metal flow characteristics Impact. The results show that with the increase of initial forging temperature, the maximum forming load of hot forging rod decreases, the maximum equivalent stress decreases, while the minimum equivalent stress and the maximum flow velocity of metal increase. The higher the mold preheating temperature, the smaller the maximum forming load. With the increase of die movement speed, the maximum equivalent stress of hot forging rod first decreases and then increases, while the minimum equivalent stress increases first and then decreases, and the maximum metal flow rate gradually increases. With the increase of the friction coefficient, the maximum equivalent stress of the hot forging rod increases gradually while the minimum equivalent stress remains unchanged, and the maximum flow velocity of the metal decreases gradually.