为了解决曲轴模锻材料利用率低和能耗高的问题,基于有限元数值模拟技术,研究了热锻曲轴的无飞边精密成形工艺及模具系统。由于曲轴的几何结构单元主要为单缸曲轴,故首先给出了单缸曲轴的热锻工序,包括板式楔横轧、多向锻造和精锻。利用D...为了解决曲轴模锻材料利用率低和能耗高的问题,基于有限元数值模拟技术,研究了热锻曲轴的无飞边精密成形工艺及模具系统。由于曲轴的几何结构单元主要为单缸曲轴,故首先给出了单缸曲轴的热锻工序,包括板式楔横轧、多向锻造和精锻。利用DEFORM 3D软件对曲轴的无飞边锻造过程进行全程数值模拟,结果表明:楔横轧工序中工件两端易突起,多向锻造中连杆颈圆角容易折叠,精锻中主轴颈圆角处容易折叠;楔横轧工序最大载荷为250 k N,多向锻造X向最大载荷为450 k N,精锻最大载荷为5 450 k N。最后将该技术推广到两缸曲轴和多缸曲轴,同样得到了良好的无飞边结果。展开更多
The article has described the technological analysis of the plastic deformation of slip joint pliers,the design of forging drawing,the sectional diagram and the diametral diagram of the calculating billet.The flashles...The article has described the technological analysis of the plastic deformation of slip joint pliers,the design of forging drawing,the sectional diagram and the diametral diagram of the calculating billet.The flashless die construction and the productive technological process of slip joint pliers are introduced.It has elaborated the advantages of replacing traditional old technology with technology of flashless die forging.In the end it has given the techno economic comparison of the new and old technologies.展开更多
文摘为了解决曲轴模锻材料利用率低和能耗高的问题,基于有限元数值模拟技术,研究了热锻曲轴的无飞边精密成形工艺及模具系统。由于曲轴的几何结构单元主要为单缸曲轴,故首先给出了单缸曲轴的热锻工序,包括板式楔横轧、多向锻造和精锻。利用DEFORM 3D软件对曲轴的无飞边锻造过程进行全程数值模拟,结果表明:楔横轧工序中工件两端易突起,多向锻造中连杆颈圆角容易折叠,精锻中主轴颈圆角处容易折叠;楔横轧工序最大载荷为250 k N,多向锻造X向最大载荷为450 k N,精锻最大载荷为5 450 k N。最后将该技术推广到两缸曲轴和多缸曲轴,同样得到了良好的无飞边结果。
文摘The article has described the technological analysis of the plastic deformation of slip joint pliers,the design of forging drawing,the sectional diagram and the diametral diagram of the calculating billet.The flashless die construction and the productive technological process of slip joint pliers are introduced.It has elaborated the advantages of replacing traditional old technology with technology of flashless die forging.In the end it has given the techno economic comparison of the new and old technologies.