Experimental study of fiber laser surface texturing of polycrystalline diamond tools

Su, Yongsheng; Li, Liang; He, Ning; Zhao, Wei

doi:10.1016/j.ijrmhm.2014.03.001

Cited by 46 publications

(15 citation statements)

References 37 publications

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“…An optimised fluence can produce uniform micro features. Su et al [ 92 ] showed this when creating dimples and linear grooves with a fibre laser on a PCD tool. The study changed the defocusing distance to change the fluence (alters the effective laser spot size).…”

Section: Fabrication Of Surface Texturesmentioning

confidence: 97%

Laser Processing of Hard and Ultra-Hard Materials for Micro-Machining and Surface Engineering Applications

2021

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Polycrystalline diamonds, polycrystalline cubic boron nitrides and tungsten carbides are considered difficult to process due to their superior mechanical (hardness, toughness) and wear properties. This paper aims to review the recent progress in the use of lasers to texture hard and ultra-hard materials to a high and reproducible quality. The effect of wavelength, beam type, pulse duration, fluence, and scanning speed is extensively reviewed, and the resulting laser mechanisms, induced damage, surface integrity, and existing challenges discussed. The cutting performance of different textures in real applications is examined, and the key influence of texture size, texture geometry, area ratio, area density, orientation, and solid lubricants is highlighted. Pulsed laser ablation (PLA) is an established method for surface texturing. Defects include melt debris, unwanted allotropic phase transitions, recast layer, porosity, and cracking, leading to non-uniform mechanical properties and surface roughness in fabricated textures. An evaluation of the main laser parameters indicates that shorter pulse durations (ns—fs), fluences greater than the ablation threshold, and optimised multi-pass scanning speeds can deliver sufficient energy to create textures to the required depth and profile with minimal defects. Surface texturing improves the tribological performance of cutting tools in dry conditions, reducing coefficient of friction (COF), cutting forces, wear, machining temperature, and adhesion. It is evident that cutting conditions (feed speed, workpiece material) have a primary role in the performance of textured tools. The identified gaps in laser surface texturing and texture performance are detailed to provide future trends and research directions in the field.

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Section: Fabrication Of Surface Texturesmentioning

confidence: 97%

Laser Processing of Hard and Ultra-Hard Materials for Micro-Machining and Surface Engineering Applications

2021

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“…Hence, more material in molten liquid phase is carried out by high pressure of steam and results in a larger kerf width. 24 However, the reduction of the kerf width occurs when the LPE rises from 50 mJ to 80 mJ. Tunna et al 15 found decrease of diameter of percussion drilled hole with increase in fluence during nanosecond laser micromachining of Al.…”

Section: Influence Of Laser Pulse Energy On Micro-channelsmentioning

confidence: 99%

“…Bizi-bandoki et al 23 observed micro- and nano-scale ripples, splash-like structures and pores with different fluence during laser irradiation on a moulding stainless steel. Su et al 24 investigated laser texturing on the polycrystalline diamond to develop micro-holes and micro-grooves with different geometries. It is observed that with lower power output, higher pulse repetition rate and SS, the dimensions of microtexture (depth and diameter) are reduced.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigations of nanosecond-pulsed Nd:YAG laser beam micromachining on 304 stainless steel

Behera

Sankar

Baruah

et al. 2018

Journal of Micromanufacturing

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The demand for miniaturized components is increasing day by day as their application varies from industry to industry such as biomedical, micro-electro-mechanical system and aerospace. In the present research work, high-quality micro-channels are fabricated on 304 stainless steel by laser beam micromachining process with nanosecond Nd:YAG laser. The laser pulse energy (LPE), scanning speed (SS) and scanning pass number (SP No.) are used as the process parameters, whereas the depth and width of the kerf as well as the surface roughness are used to characterize the micro-channels. It is found that the kerf depth, width and surface roughness decrease with increase in the SS. The kerf depth sharply increases with increase in the SP No. The kerf width is minimum at 30 mJ LPE, 400 µm s‒1 SS and 10 SP No. The minimum surface roughness is observed at 30 mJ LPE, 500 µm s‒1 SS and 10 SP No. The oxygen content is found to gradually decrease with the distance from the centre of the micro-channel. Based on the experimental results, optimized input parameters can be offered to control the micro-channel dimensions and improve their surface finish effectively on stainless steel.

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“…4 Moreover, using surface textures on a cutting tool for difficult-to-machine materials can increase tool lifetime, as it can enhance the tribological properties of the tool. 5 It has also been proved that compared to smooth surfaces, textured surfaces can enhance evaporation efficiency in spray cooling. 6…”

Section: Introductionmentioning

confidence: 99%

“…4 Moreover, using surface textures on a cutting tool for difficult-tomachine materials can increase tool lifetime, as it can enhance the tribological properties of the tool. 5 It has also been proved that compared to smooth surfaces, textured surfaces can enhance evaporation efficiency in spray cooling. 6 A number of methods have been used to generate micro-dimple arrays: micro-milling, 7 electrical discharge machining, 8 laser beam machining, 9 abrasive jet machining 10 and electrochemical machining (ECM).…”

Section: Introductionmentioning

confidence: 99%

Electrochemical micromachining of large-area micro-dimple arrays with high machining accuracy

Hou

Chen

2016

Proceedings of the Institution of Mechanical Engineers, Part B:

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Surface textures, especially micro-dimple arrays, can significantly improve the friction performance of engineering parts. Through-mask electrochemical micromachining is an effective method for generating micro-dimple arrays. In this article, a new method is introduced to fabricate a large-area polydimethylsiloxane mask containing micro through-holes. Using this technique, a stainless steel mould with micro-pillar arrays is generated by wire electrical discharge machining. A combination of pressure and weight of electrolyte is then proposed to keep the polydimethylsiloxane mask closely attached to the workpiece, which helps to achieve high machining accuracy. The effects of applied voltage, effective machining time and pulse duty cycle on the micro-dimples are investigated. The profiles of the micro-dimples are not sensitive to applied voltage, but pulse duty cycle is a significant factor influencing the depth of the micro-dimples. Micro-dimples of width 95 µm, depth 19 µm and a machining area of diameter 40 mm are successfully generated using a polydimethylsiloxane mask, and the standard deviations of the micro-dimple width and depth are only 0.84 and 0.23 µm, respectively. The present experiments verify that it is feasible to obtain large-area micro-dimple arrays with high machining accuracy using this technique.

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Experimental study of fiber laser surface texturing of polycrystalline diamond tools

Cited by 46 publications

References 37 publications

Laser Processing of Hard and Ultra-Hard Materials for Micro-Machining and Surface Engineering Applications

Laser Processing of Hard and Ultra-Hard Materials for Micro-Machining and Surface Engineering Applications

Experimental investigations of nanosecond-pulsed Nd:YAG laser beam micromachining on 304 stainless steel

Electrochemical micromachining of large-area micro-dimple arrays with high machining accuracy

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