Groove deformation analysis of a single plough on inner copper tube

Lu, Longsheng; Tang, Yong; Dong, Yuan; Deng, Daxiang

doi:10.1016/j.jmatprotec.2011.05.007

Cited by 8 publications

(4 citation statements)

References 21 publications

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“…The nned tubes can be obtained by different manufacturing routes [11][12][13]. Indeed, they can be processed by plastic deformation or by joining of different parts using mechanical fastening and welding techniques [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

A finite element model to analyse forming defects in rolling-extrusion of finned tubes

Filice,

Borda,

Trotta

et al. 2024

Preprint

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Finned tubes improve the efficiency of air-cooled heat exchangers by increasing the transmission surface area. The rolling-extrusion process can be employed to their manufacturing by plastic deforming single- or multi- material tubes. The forming steps are usually performed by rotating specific heads composed of a series of disks, whose dimensions are customised to achieve the desired fins’ sizes in terms of height, thickness and pitch. Process parameters, such as the temperature of the disks and of the processed material or the lubricant conditions mainly affect the quality of the obtained products in terms of performance, but also in terms of integrity of both manufactured parts and employed equipment. Numerical simulations resulted to be important in understanding the stress and strain distribution during the forming phase of the tubes. Anyway, the process dynamics and the geometries to be produced require 3D simulations that usually are complex to be set and really time consuming. In the proposed research, empirical industrial expertise on rolling extrusion of finned tubes was exploited to propose a 2D numerical approach able to provide manufacturing directions at changing of the pointed-out process conditions. Specifically, the numerical model was set for manufacturing a bimetallic finned tube for oil & gas applications. The model was set to achieve conditions in terms of shape and size of the fins comparable to the experiments. The model was subsequently employed at changing of the process parameters highlighting their influences on the conditions that can result on products non-conformities and/or in rupture of the rotating heads impacting significantly on both product quality and production capacity.

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Section: Introductionmentioning

confidence: 99%

A finite element model to analyse forming defects in rolling-extrusion of finned tubes

Filice,

Borda,

Trotta

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…The finned tubes are mainly of dimple tube, micro-fin tube, integral fin tube, dimple-grooved tube [4]. The main manufacturing methods of these enhanced tubes are coating and sintering [5], flame spraying [6], machining [7] and electrochemical corrosion methods [8]. Among these methods, the most commonly used method is the sintering, followed by the flame spraying because the surface porous structures produced by the sintering and flame spraying have very excellent enhanced boiling properties.…”

Section: Introductionmentioning

confidence: 99%

“…The third method used widely is machining, e.g. ploughing by which the finned structure with rough surface can be produced [7]. The electrochemical corrosion methods are mainly used to manufacture the enhanced boiling tube for some special applications [8].…”

Section: Introductionmentioning

confidence: 99%

Manufacturing of a 3D finned tube for enhanced boiling and condensation using rolling-cutting-extruding composite forming

Huang

Chen

Wan

et al. 2021

Int J Adv Manuf Technol

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3D finned tube is a high efficient enhanced heat transfer element and its manufacturing has always been the focus of research's attention. It is a challenging job to manufacture a 3D finned tube that can enhance both boiling and condensation because the enhanced boiling structure is completely different from the enhanced condensation structure due to different heat transfer enhancement mechanisms. An innovative rolling-cuttingextruding composite forming method is developed to realize the manufacture of a staggered stepped lattice finned tube (SLFT) with helical fins, two layers of staggered stepped lattice fins and inner helical threads, which can enhance boiling as well as condensation heat transfer. The three skewed rolling-cutting tools specially designed are uniformly distributed around the base tube and the kinematics conditions of rolling-cutting-extruding process is analyzed. The relative plunge depth of a rolling blade can't exceed a certain limit value and the feeding angle has to be equal to the helix angle of outer helical fin. According to the kinematic conditions, the parameters of the rolling-cutting tool are selected and processing experiments of the SLFT are conducted.

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“…Moreover, the micro-cutting tool made of cemented tungsten carbide with 0.6 mm in grain size was fabricated by electrical discharge machining to realize the micro-drilling of diameter-3 mm hole [2]. A plough method was also used to fabricate micro-grooves on inner surface of copper tube [3]. However, these approaches easily produced burrs on micro-structured edges.…”

Section: Introductionmentioning

confidence: 99%

Dry electro-contact discharge mutual-wear truing of micro diamond wheel V-tip for precision micro-grinding

Xie

Luo

et al. 2012

International Journal of Machine Tools and Manufacture

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Groove deformation analysis of a single plough on inner copper tube

Cited by 8 publications

References 21 publications

A finite element model to analyse forming defects in rolling-extrusion of finned tubes

A finite element model to analyse forming defects in rolling-extrusion of finned tubes

Manufacturing of a 3D finned tube for enhanced boiling and condensation using rolling-cutting-extruding composite forming

Dry electro-contact discharge mutual-wear truing of micro diamond wheel V-tip for precision micro-grinding

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