Wear Behavior of Diamond-Coated Drawing Dies  

作　　者：林子超 孙方宏 沈彬 

机构地区：[1]School of Mechanical Engineering, Shanghai Jiao Tong University

出　　处：《Transactions of Tianjin University》2011年第4期259-263,共5页天津大学学报（英文版）

基　　金：Supported by National Natural Science Foundation of China (No. 50975177 and No. 51005154);China Postdoctoral Science Foundation (No. 20100470029);Tribology Science Fund of State Key Laboratory of Tribology (No. SKLTKF10B02)

摘　　要：The failure behavior of diamond-coated die was investigated experimentally and analytically through finite element method (FEM) simulation in the present work. Diamond coatings were fabricated by straight hot filament chemical vapor deposition (CVD) passing through the interior hole of the drawing die using a mixture of hydrogen and acetone as source gases. The performance tests were made under real drawing condition. Scanning electron microscopy (SEM) was used for the study of coating wear after die service. The coating wear appears on two regions of the reduction zone: one is near the entrance where the contact begins, and the other is at the end of the reduction zone. FEM simulation was made for calculating the von Mises stresses distribution on the coating and substrate during the drawing process. The present work was of great practical significance for the improvement of drawing performance of diamond-coated drawing dies.The failure behavior of diamond-coated die was investigated experimentally and analytically through fi- nite element method （FEM） simulation in the present work. Diamond coatings were fabricated by straight hot filament chemical vapor deposition （CVD） passing through the interior hole of the drawing die using a mixture of hydrogen and acetone as source gases. The performance tests were made under real drawing condition. Scanning electron mi- croscopy （SEM） was used for the study of coating wear after die service. The coating wear appears on two regions of the reduction zone： one is near the entrance where the contact begins, and the other is at the end of the reduction zone. FEM simulation was made for calculating the von Mises stresses distribution on the coating and substrate during the drawing process. The present work was of great practical significance for the improvement of drawing performance of diamond-coated drawing dies.

关 键 词：wire drawing diamond coating WEAR FEM simulation 

分 类 号：TG174.4[金属学及工艺—金属表面处理]