Effect of Substrate Bias and Coating Thickness on the Properties of nc-AlCrN/a-SixNy Hard Coating and Determination of Cutting Parameters

2017 ◽  
Vol 261 ◽  
pp. 229-236 ◽  
Author(s):  
Tomáš Vopát ◽  
Marián Haršáni ◽  
Marcel Kuruc ◽  
Vladimír Šimna ◽  
Rudolf Zaujec ◽  
...  
Keyword(s):  
Cutting Speed ◽  
Cutting Parameters ◽  
Cemented Carbide ◽  
Depth Of Cut ◽  
Substrate Bias ◽  
Substrate Bias Voltage ◽  
Coated Cemented Carbide ◽  
Carbide Inserts ◽  
Cemented Carbide Inserts

Nitride hard coatings Al25.5Cr21Si3.5N were deposited on WC-Co substrates with a different thickness and a negative substrate bias voltage by the LAteral Rotating Cathodes Arc technology. The nanoindentation tests were performed for analysis of AlCrSiN coatings in order to determine the most promising combination of parameters for subsequent machining. On the basis of results of nanohardness measurement and Ratio H/E*, which represents the resistance to plastic deformation and cracking, deposition conditions were selected for coating of turning cemented carbide inserts. For the evaluation of coating adhesion to substrate, Mercedes adhesion test was used. Chip forming tests and long-term tool life tests were performed for determination of cutting parameters (cutting speed, feed rate and depth of cut) for AlCrSiN coated cemented carbide inserts when machining austenitic stainless steel material.

scholarly journals Surface roughness characterization of stainless steel after laser assisted machining

Mechanik ◽  
2019 ◽  
Vol 92 (12) ◽  
pp. 827-829 ◽  
Author(s):  
Agata Felusiak ◽  
Martyna Wiciak-Pikuła ◽  
Tadeusz Chwalczuk ◽  
Piotr Kieruj ◽  
Paweł Twardowski
Keyword(s):  
Surface Roughness ◽  
Stainless Steel ◽  
Cutting Parameters ◽  
Cemented Carbide ◽  
Roughness Parameters ◽  
Laser Assisted Machining ◽  
Carbide Inserts ◽  
Cemented Carbide Inserts

The paper presents the analysis of the influence of laser assisted machining (LAM) on various parameters of surface roughness of stainless steel. The tests were carried out for cemented carbide inserts with varying cutting parameters. In most cases, a significant reduction in the roughness parameters was observed using LAM.

scholarly journals Machining Performance of TiAlN-Coated Cemented Carbide Tools with Chip Groove in Machining Titanium Alloy Ti-6Al-0.6Cr-0.4Fe-0.4Si-0.01B

Metals ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 850 ◽  
Author(s):  
Zhaojun Ren ◽  
Shengguan Qu ◽  
Yalong Zhang ◽  
Xiaoqiang Li ◽  
Chao Yang
Keyword(s):  
Surface Roughness ◽  
Titanium Alloy ◽  
Feed Rate ◽  
Cutting Speed ◽  
Cutting Parameters ◽  
Cemented Carbide ◽  
Machining Performance ◽  
Cemented Carbide Tools ◽  
Optimal Cutting Parameters ◽  
Coated Cemented Carbide

In this paper, TiAlN-coated cemented carbide tools with chip groove were used to machine titanium alloy Ti-6Al-0.6Cr-0.4Fe-0.4Si-0.01B under dry conditions in order to investigate the machining performance of this cutting tool. Wear mechanisms of TiAlN-coated cemented carbide tools with chip groove were studied and compared to the uncoated cemented carbide tools (K20) with a scanning electron microscope (SEM) and energy dispersive spectrometer (EDS). The effects of the cutting parameters (cutting speed, feed rate and depth of cut) on tool life and workpiece surface roughness of TiAlN-coated cemented carbide tools with chip groove were studied with a 3D super-depth-of-field instrument and a surface profile instrument, respectively. The results showed that the TiAlN-coated cemented carbide tools with chip groove were more suitable for machining TC7. The adhesive wear, diffusion wear, crater wear, and stripping occurred during machining, and the large built-up edge formed on the rake face. The optimal cutting parameters of TiAlN-coated cemented carbide tools were acquired. The surface roughness Ra decreased with the increase of the cutting speed, while it increased with the increase of the feed rate.

The effect of substrate pretreatments and HPPMS-deposited adhesive interlayers’ materials on the cutting performance of coated cemented carbide inserts

CIRP Annals ◽  
2010 ◽  
Vol 59 (1) ◽  
pp. 73-76 ◽  
Author(s):  
K.-D. Bouzakis ◽  
G. Skordaris ◽  
S. Gerardis ◽  
G. Katirtzoglou ◽  
S. Makrimallakis ◽  
...  
Keyword(s):  
Cutting Performance ◽  
Cemented Carbide ◽  
Coated Cemented Carbide ◽  
Carbide Inserts ◽  
Cemented Carbide Inserts

Effect on PVD coated cemented carbide inserts cutting performance of micro-blasting and lapping of their substrates

2005 ◽  
Vol 200 (1-4) ◽  
pp. 128-132 ◽  
Author(s):  
K.-D. Bouzakis ◽  
G. Skordaris ◽  
N. Michailidis ◽  
A. Asimakopoulos ◽  
G. Erkens
Keyword(s):  
Cutting Performance ◽  
Cemented Carbide ◽  
Coated Cemented Carbide ◽  
Carbide Inserts ◽  
Cemented Carbide Inserts

Study on Spindle Vibration and Surface Finish in Turning of Al 7075

2017 ◽  
Vol 261 ◽  
pp. 321-327 ◽  
Author(s):  
Abidin Şahinoğlu ◽  
Şener Karabulut ◽  
Abdulkadir Güllü
Keyword(s):  
Surface Roughness ◽  
Experimental Studies ◽  
Cutting Speed ◽  
Cutting Parameters ◽  
Depth Of Cut ◽  
Machining Parameters ◽  
Dry Cutting ◽  
Al 7075 ◽  
Spindle Vibration ◽  
Coated Cemented Carbide

In this study, the relationship between the spindle vibration and surface roughness was investigated and the effect of the cutting parameters on surface roughness and spindle vibration during the machining of Aluminum alloy 7075 (Al 7075) were determined. Experimental studies have been carried out on a CNC turning machine using coated cemented carbide cutting tools under dry cutting environment. L64 full factorial design of experiments was used to investigate the optimal machining parameters for spindle vibration and surface roughness. The influences of machining parameters on vibration and surface roughness were evaluated by using analysis of variance (ANOVA) and main effect plots. The results revealed that the feed rate was the most effective cutting parameters on spindle vibration and surface roughness. The machine tool vibration amplitude and surface roughness values were significantly increased with increasing cutting feed. The depth of cut and cutting speed have the least effect on the spindle vibration and indicated an insignificant effect on surface roughness. Mathematical equations were developed to predict the vibration and surface roughness values using the regression analysis.

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