Influences of total reduction of area on drawing stress and tube dimension in inner spiral ribbed copper tube sinking

Tangsri, Tanit; Norasethasopon, Somchai

doi:10.1007/s00170-014-6624-7

Cited by 3 publications

(2 citation statements)

References 5 publications

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“…This process has the limitation that, once the tube is reduced, the geometric section of its inner groove will deform. [5], [6] The present research attempts to solve this problem by forming inner-grooved tubes via dieless forming instead of roll forming.…”

Section: Introductionmentioning

confidence: 99%

Development of Inner-Grooved Tubes by Dieless Micro-Forming with Laser-as-Sisted Air Pressure

Cheng

Teng

et al. 2017

MATEC Web Conf.

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Abstract. Grooved tubes are widely used in electronic cooling modules. They are usuallt drawn, a term referring to molding. However, this process has limitations, especially in the production of smaller tubes. Therefore, this study examines the potential of an alternative process, dieless forming, in which the grooves on stainless steel are generated by pulsed laser-assisted air pressure. To begin with, the stainless steel tube in ambient air was heated using a pulsed laser. Then, groove samples were sliced for observation using an optical microscope (OM). Finally, the samples were analyzed using Scanning Electronic Microscope (SEM). The results demonstrate that grooves can be formed utilizing dieless forming with pulsed laser-assisted air pressure. The average observed depth of the grooves 208.5 um at 10-watt power and 0.01 Mpa gas pressure. In conclusion, grooves at a micro scale can be produced effectively by dieless forming for a range of industrial applications.

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Section: Introductionmentioning

confidence: 99%

Development of Inner-Grooved Tubes by Dieless Micro-Forming with Laser-as-Sisted Air Pressure

Cheng

Teng

et al. 2017

MATEC Web Conf.

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“…From the results, the optimum Rt% on the method of the tube sinking process with ISRCT must not exceed 57 %, and the size of the ISRCT has to be precise with a gap between the ribbed base and the ribbed tip; the angle of the ribbed spiral must not be 0. The conclusions are that the optimal Rt% used in the manufacture of ISRCT is suggested to be lower than 57 % [9]. The Kobe Steel Group has the largest share of the Asian market for highperformance copper alloy strips for electronic equipment and for air conditioning copper tubes.…”

Section: Introductionmentioning

confidence: 99%

3D FEM validation of ultra-small inner spiral ribbed copper tube using the tube sinking method

Tangsri

Norasethasopon

2015

Int J Adv Manuf Technol

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This research related to the development of ultrasmall inner spiral ribbed copper tubes (ISRCTs) which have high quality and efficiency in transferring heat. The deformation behaviour of the ISRCT was studied. Three-dimensional finite element models were constructed for the various process parameters: the change of the cross-section profiles of the ribbed contours and the spiral angle of the ribbed area of the ISRCT, for twelve multi-pass drawings through the die using the tube sinking method. The effect of the ribbed spiral angle and the ribbed cross-sectional profile was also studied. Modelling and simulation techniques were performed using commercial Abaqus software to learn whether the surface profiles of the ISRCT increased or reduced with tube sinking using the finite element method (FEM). Results of the multi-pass drawing analysis were summarised and compared to the experimental findings. The FEM simulation approach was used to analyse the changes of ten parameters: von Mises stress, wall thickness, ribbed base width, ribbed tip width, ribbed base gap, ribbed tip gap, ribbed height, ribbed pitch, axial displacement and ribbed spiral angle. This procedure can be used to improve product quality and to study the effect of the various parameters. The results will be very valuable for researchers and well engineers for future design of ultra-small ISRCT to improve the quality and efficiency of heat transfer.

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Cold precision forming and microstructure evolution of ribbed tube for nuclear fuel cladding by multi-pass drawing

Li,

Wang,

Liu

et al. 2024

Journal of Materials Processing Technology

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Influences of total reduction of area on drawing stress and tube dimension in inner spiral ribbed copper tube sinking

Cited by 3 publications

References 5 publications

Development of Inner-Grooved Tubes by Dieless Micro-Forming with Laser-as-Sisted Air Pressure

Development of Inner-Grooved Tubes by Dieless Micro-Forming with Laser-as-Sisted Air Pressure

3D FEM validation of ultra-small inner spiral ribbed copper tube using the tube sinking method

Cold precision forming and microstructure evolution of ribbed tube for nuclear fuel cladding by multi-pass drawing

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