轻型牙钻机粉末冶金双联凸轮的开发与应用
Development and application of powder metallurgy double-linked cam for lightweight dental drilling rig
叶敏翎 1黄永强1
作者信息
- 1. 广州铁路职业技术学院,广东 广州 511300
- 折叠
摘要
双联凸轮作为轻型电动牙钻机的主要传动零件,需具有轻便性及优良的力学性能.本文采用有限元Deform软件对不同模具结构方案下的压坯密度进行模拟分析,并基于Fe-Cr-Mo烧结硬化材料分别对常规烧结工艺、浸铜烧结工艺、常规烧结+渗碳淬火工艺以及浸铜烧结+渗碳淬火工艺四组试验进行研究,从合金成分、密度以及微观组织等角度分析不同工艺对力学性能的影响.最终选取"上二下三"的模具结构方案,采用浸铜烧结+渗碳淬火的组合工艺,成功制备出了高硬度、高耐磨性的双联凸轮.
Abstract
The double-linked cam,as the main transmission part of a lightweight electric dental drill,is required to have lightness and excellent mechanical properties.In this paper,the finite element software-Deform was used to simulate and analyze the green compact under different die structure schemes.Based on Fe-Cr-Mo sin-tered hardening material,the effects of four different processes,including conventional sintering,copper infiltra-tion sintering,conventional sintering+carburizing quenching and copper infiltration sintering+carburizing quench-ing,on mechanical properties were analyzed from the aspects of alloy composition,density and microstructure.Finally,the mold structure scheme of'two upper punches and three lower punches'is selected,and a combina-tion of copper dipping and carburizing is adopted to successfully prepare the double-linked cam,which owns ex-cellent hardness and wear resistance.
关键词
粉末冶金/双联凸轮/Deform模拟/浸铜/渗碳淬火Key words
powder metallurgy/double-linked cam/deform simulation/copper infiltration/carburizing and quenching引用本文复制引用
出版年
2024
NETL
NSTL
万方数据