欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
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．
英文摘要：
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.
同期刊论文项目
同项目期刊论文
Fabrication of graphite composite bipolar plate forminiature PEMFCs by micro planing with multi-cutt
Microstructure evolution of adiabatic shear bands and mechanisms of saw-tooth chip formation in mach
Operational characteristics of a passive air-breathing direct methanol fuel cell under various struc
Effect of fabrication parameters on capillary performance of composite wicks for two-phase heat tran
Structural diversity and orientation dependence of a liquid-fed passive air-breathing direct methano
Numerical simulation of transport characteristics of porous metal fiber sintered felts used in micro
Fabrication of wave-like microstructure on the bottom of microflow channel of metallic bipolar plate
Three-dimensional finite-difference lattice Boltzmann model and its application to inviscid compress
Problems involved in the shell-side performance of a longitudinal-flow shell-and-tube heat exchanger
Surfactant-free ionic liquid-based nanofluids with remarkable thermal conductivity enhancement at ve
Numerical study of heat-transfer enhancement by punched winglet-type vortex generator arrays in fin-
Experimental study on the performance of a novel structure for two-phase flow distribution in parall
Exergetic analysis of transcritical CO2 residential air-conditioning system based on experimental da
Numerical study of heat transfer enhancement by unilateral longitudinal vortex generators inside par
Roughness effect on flow and thermal boundaries in microchannel/nanochannel flow using molecular dyn
Condensation heat transfer characteristics of zeotropic refrigerant mixture R407C on single, three-r
Preparation and thermal energy storage properties of paraffin/expanded graphite composite phase chan
A numerical study of the deposition characteristics of sulfuric acid vapor on heat exchanger surface
Thermal energy storage cement mortar containing n-octadecane/expanded graphite composite phase chang
Modeling the effect of anisotropy of gas diffusion layer on transport phenomena in a direct methanol
Numerical analysis on performance and contaminated failures of the miniature split Stirling cryocool
Experimental Investigation on the Performances on the Shell Side of Shell-and-Tube Heat Exchangers w
期刊信息
位置：