不锈钢三维整体外翅片管的复合成形  

Compound Forming of Outside 3-Dimension Integral Fins on Stainless Steel Tubes

作　　者：张小霞[1] 汤勇[1] 万珍平[1] 陆龙生[1] 何雅玲[2] 

机构地区：[1]华南理工大学表面功能结构先进制造广东普通高校重点实验室,广东广州510640 [2]西安交通大学动力工程多相流国家重点实验室,陕西西安710049

出　　处：《华南理工大学学报（自然科学版）》2011年第8期13-18,共6页Journal of South China University of Technology(Natural Science Edition)

基　　金：国家自然科学基金委员会与广东省政府自然科学联合基金重点项目(U0934005);国家自然科学基金资助项目(51075155);广东高校优秀青年创新人才培养计划项目(LYM09024);华南理工大学自然科学青年基金资助项目(x2jqE5091010)

摘　　要：设计开发了一种新型的犁切／挤压刀具，通过滚压-犁切／挤压复合成形技术，在不锈钢管外表面加工出三维整体翅片．翅片形成分为两个过程：首先滚压出V型沟槽，然后通过犁切／挤压在V型沟槽上生成三维整体翅片．实验分析了不同滚压条件下形成的沟槽形貌，以及不同犁切／挤压条件下形成的三维整体外翅片形貌；并探讨了犁切／挤压深度、进给量对翅片高度、翅片间距的影响．结果表明：当滚压深度为1．20mm、犁切／挤压深度为0．25—0．45mm、进给量为2．16～3．92mm/r时，可以在不锈钢管外表面加工出性能最优的三维整体翅片．In this paper, a novel plowing/extrusion tool is proposed to develop a new compound forming technique of rolling-plowing/extrusion to machine outside 3-dimension integral fins on stainless steel tubes. The machining process is divided into two stages： to fabricate V-ribs by rolling and to machine 3-dimension integral fins on the V-ribs by plowing/extrusion. Moreover, the morphologies of the ribs and the fins under different processing conditions were experimentally analyzed, and the effect of the plowing/extrusion depth and feed rate on the fin height and pitch were investigated. The results show that the optimal fins are machined at a rolling depth of 1.20 mm, a plowing/extrusion depth of 0. 25 - 0. 45 mm and a feed rate of 2. 16 - 3.92 mm/r.

关 键 词：强化传热 不锈钢管 整体翅片管 滚压 犁切/挤压 

分 类 号：TG506[金属学及工艺—金属切削加工及机床]