基于修正Archard磨损理论的挤压模具磨损分析.pdf

2006 3 Mar12006 3 ( 175) LUBRICATION ENGINEERING No13 ( serialNo1 175) Archard* 1 1 1 2 (11 212013; 21 230009) : Archard, , : , , , , : ; ; ; : TG315 : A : 0254- 0150 ( 2006) 3- 010- 3 W ear Analysis of Extrusion D ie Based on A rchard. s Theory 1 1 1 2 W ang Le igang H uang Y ao S un X ianp ing Liu Q uankun ( 11SchoolofMaterialsScience andTechnology, JiangsuUniversity, Zhenjiang Jiangsu 212013, China; 21SchoolofMaterials Science andTechnology, HefeiUniversity ofTechnology, HefeiAnhui230009, China) A bstract: Based onmodifiedArchard. swear theory, much usefuldataswere obtained by using finite elementmethod software during the processof extrusion including the instantaneous temperature, pressure and velocity field of every node. According to these datas, the cavity wear of both arc-shaped and cone-shaped was calculated. The results show that extrusion diewear concentrates on entrance; thewear of arc-shaped die is larger than that of cone-shaped one, but arc- shaped diewear ismore uniform, so its life span is longer. All the results are in good agreementw ith actual conditions, therefore, it lays a foundation for forecasting die life and optmi izing die cavity profile. K eyw ords: die life; wear theory; cavity; extrusion [5] , AutoForge , , , , , 1 , Archard [ 1] 70% , ,