加工参数对热柱冷凝端微沟槽形貌的影响（英文）  

Influence of machining parameters on groove surface morphology of condenser for heat column

作　　者：陶素连[1] 周钦河[1] 韦世丹[1] 

机构地区：[1]广东水利电力职业技术学院,广州510925

出　　处：《机床与液压》2015年第18期110-115,共6页Machine Tool & Hydraulics

基　　金：financially supported by Natural Science Foundation of Guangdong Province,China(No.S2013040013066);the 2014 annual university outstanding young teachers training plan of Guangdong Province

摘　　要：热柱冷凝端的表面结构对其传热性能的影响起着至关重要的作用,粗糙的微沟槽表面形貌有利于强化冷凝。提出了热柱冷凝端表面加工微沟槽的实验加工方法,建立了犁切挤压刀具加工热柱冷凝端的有限元模型。利用deform软件模拟犁切挤压刀具加工热柱冷凝端微沟槽,分析了微沟槽的成形过程及机理。有限元模拟结果表明:在加工环状沟槽时冷凝端表面形成了V形沟槽,两V形沟槽之间形成U形沟槽,V形沟槽两端有鼓包,形成沟槽翅。在轴向沟槽加工时,表面形成了相互正交的微沟槽,呈现许多U形微沟槽。进给量和犁切挤压深度对热柱冷凝端微沟槽形貌起着重要作用,犁切挤压深度越大,微沟槽表面形貌越粗糙,但是受刀具强度和刚度的影响,犁切挤压深度不能过大。进给量过大和过小,都不利于微沟槽表面形貌,只有当进给量恰当,才能形成最优的微沟槽表面形貌。Surface structure of condenser for heat column plays a vital role on its heat transfer performance; micro groove surface roughness is beneficial to the enhancement of condensation and heat transfer performance. The experiment machining method of manufacturing micro grooves on condenser surface for heat column is introduced in this paper; a finite element model machining the condenser for heat column by plough-extrusion( P-E) tool is established,P-E process is simulated using the Deform software; forming process and manufacturing mechanism of micro grooves are analyzed. Experimental results show that feed and P-E depth play important role on surface morphology of micro grooves on condenser,V-shaped grooves are formed when machining ringed grooves on the surface of condenser,U- shaped grooves are formed between two adjacent V- shaped grooves,there are bumps at two end of V- shaped groove,which form fins. Orthogonal micro grooves are formed on the surface of condenser when axial grooves are processed,which present many U- shaped micro grooves. Feed and P-E depth play important role on micro groove surface morphology: the larger the P-E depth,the coarser micro groove surface morphology.but the P-E depth can't be too large because the tool intensity and stiffness are limited. It is disadvantage for the forming of micro groove surface morphology when the feed is too large or too little. Only when the feed is right,can be formed excellent micro groove surface morphology

关 键 词：Heat column  GROOVE morphology  Plough-extrusion  Finite element simulation 

分 类 号：TN305.94[电子电信—物理电子学] TG506[金属学及工艺—金属切削加工及机床]