Surface roughness analysis after machining of direct laser deposited tungsten carbide

Wojciechowski, Szymon; Twardowski, Paweł; Chwalczuk, Tadeusz

doi:10.1088/1742-6596/483/1/012018

Cited by 15 publications

(13 citation statements)

References 6 publications

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“…In many publications problems connected with laser heating of material and changes occurring in them are analyzed [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. Mainly, they concern ferrous alloys [4,8,9], nickel alloys [6,7,13] or titanium alloys [2].…”

Section: Introductionmentioning

confidence: 99%

The Effects of Laser Surface Modification on the Microstructure of 1.4550 Stainless Steel

et al. 2018

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In this study a stainless austenitic steel 1.4550 was laser heat treated with diode laser. The influence a gouache coating on remelted steel substrate was carry out. The cooling system during laser melted was analysis as well. Melted layers were manufactured with different laser beam power between 0.6 kW and 1.4 kW, constant scanning laser beam speed vl = 5.76 m/min and laser beam diameter equal dl = 1.2 mm. The surface was treated at room temperature and under CO2 cooling conditions and the results were compered. With the increase of the laser beam power, the dimensions of the laser tracks increase. The depth of laser tracks varies significantly than their width. The deepest melted layer was observed for a material that wasn’t coated by any of absorbent paste and when there wasn’t cooling system.

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Section: Introductionmentioning

confidence: 99%

The Effects of Laser Surface Modification on the Microstructure of 1.4550 Stainless Steel

et al. 2018

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“…On the other hand, in paper [5] wear of polycrystalline diamond (PCD) tools during machining of chromium carbide semi-finished product was investigated. Researches focus as well on carbides milling [8] and examination of surface machined using CBN cutting edges [9]. Basing on the a Corresponding author : martyna.r.wiciak@doctorate.put.poznan.pl , 0…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, decrease of cutting forces by 20% was spotted. Increasing amount of researches focus on analysis of vibrations which accompany the machining process [15]. Generating of too heavy vibrations may lead to a loss of process stability.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation and Performance Analysis of Ceramic Inserts in Laser Assisted Turning of Waspaloy

2018

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In this paper, the influence of laser assisted turning of hard-to-cut nickel-based superalloy on tool cutting ability was presented. The conducted research involved the machining performance along with tool life of ceramic inserts during turning of heat-resistant alloy under a trade name Waspaloy. The ceramic insert with geometry in accordance with the ISO – RPGX 120700 T01020 were applied during longitudinal turning with laser beam. The investigations has been completed with various cutting conditions such as laser power P, cutting speed vc, feed f and depth of cut ap. In order to determine the relations between the tool wear and cutting time, the tool life T has been selected. The increment of tool wear was correlated with the change of vibration signals and the critic points of tool wear was presented. In addition, the shape and form of chip was evaluated based on macroscopic observation and SEM analyses. The conducted research was primarily focused on effective application of ceramic inserts during turning Waspaloy with laser beam and comparison this technology with conventional machining.

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“…the increased corrosion resistance, wear resistance and heat resistance [3]. Nevertheless, the parts produced by cladding technology have an unsatisfactory geometric accuracy and high surface roughness [4]. Thus, in order to produce the finished parts with high surface quality and high productivity, the processes which perform both cladding and machining can be applied.…”

Section: Introductionmentioning

confidence: 99%

The study on minimum uncut chip thickness and cutting forces during laser-assisted turning of WC/NiCr clad layers

Przestacki

Chwalczuk

Wojciechowski

2017

Int J Adv Manuf Technol

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Laser cladding technology enables the regeneration or manufacturing of machine parts with the improved surface layer properties. The materials applied during the laser cladding processes very often contain hard and wear-resistant tungsten carbide (WC) particles. However, the parts obtained after the laser cladding have usually unsatisfactory surface quality and thus require post-process finishing. In addition, the content of WC particles causes that clad layers are difficult to cut. Therefore, in order to improve their machinability, the laser-assisted machining (LAM) technology can be applied. Nevertheless, the material removal mechanisms during LAM of WC/NiCr clad layers are not recognized. Thus, this study is focused on the estimation of minimum uncut chip thickness and analysis of cutting forces which are important factors describing the chip decohesion process. The proposed method is based on the novel approach dedicated directly to the oblique cutting, considering the zeroth tangential force increment located onto rounded cutting edge. The experimental procedure involves cutting force component (F c , F f , F p ) measurements in the range of variable cutting conditions, as well as the cutting tool's micro-geometry inspection. On the basis of the measurements carried out, the force regression equations are formulated and subsequently applied to the determination of tangential force expression. Subsequently, the minimum uncut chip thickness is calculated on the basis of the equation derived from the zero tangential force increment condition and presented in function of cutting speed. The obtained results enable the effective selection of the cutting parameters during LAM of WC/NiCr clad layers.

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Surface roughness analysis after machining of direct laser deposited tungsten carbide

Cited by 15 publications

References 6 publications

The Effects of Laser Surface Modification on the Microstructure of 1.4550 Stainless Steel

The Effects of Laser Surface Modification on the Microstructure of 1.4550 Stainless Steel

Experimental Investigation and Performance Analysis of Ceramic Inserts in Laser Assisted Turning of Waspaloy

The study on minimum uncut chip thickness and cutting forces during laser-assisted turning of WC/NiCr clad layers

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