摘要
通过对失效的环模型孔形貌进行观测,发现磨损后的型孔倒角类似于一个z>0时的单叶双曲面,建立磨损后型孔倒角处的空间曲面模型,对其进行微元分析从而得出了磨损后环模型孔挤出力与摩擦力的关系,即当比例常数k∈[0.37,0.64]时,制粒条件不全被破坏.
The failure of circular mould is the main factor that effecting the life of pelletizer and increasing the cost of production.Through the observation on the morphology of failure model hole of circular mould,we discovered a model hole after wearing similar to a hyperboloid.Thus the space surface model that approximate to the model hole that after wearing was established.And the infinitesimal analysis was carried out to get the relationship of extrusion force and friction for model hole after wearing of circular mould.It＇s very important to study the failure mechanism and improve the utilization rate of circular mould.
出处
《甘肃农业大学学报》
CAS
CSCD
北大核心
2011年第6期141-144,149,共5页
Journal of Gansu Agricultural University
基金
国家自然科学基金项目(51065001)
甘肃省高校研究生导师科研项目(1002-10)
关键词
环模型孔
倒角
磨损
模型
circular mould
model hole
chamfer
model
