Accuracy and topography analysis of hard machined surfaces

Kundrák, János; Sztankovics, István; Molnár, Viktor

doi:10.21062/mft.2021.057

Cited by 4 publications

(2 citation statements)

References 20 publications

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“…In their research, he came to the knowledge that as the cutting speed decreases, the material process of breaking off becomes more and more intense, deteriorating the working surface of the cutting tool more and more. The problem of microgeometry of machined surfaces by finishing turning and grinding was also dealt with in their research by the team of authors Kundrák et al [18]. This comparative study analyzed the roughness and accuracy from just 2D and 3D microgeometric point of view on 20MnCr5 steel.…”

Section: Introductionmentioning

confidence: 99%

Surface Roughness, Topography, Accuracy, Chip Formation Analysis & Investigation of M390 and M398 Steels after Hard Machining

Majerík¹,

Majerský²,

Barényi³

et al. 2023

Manufacturing Technology

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Article deals with processing of intermetallic materials produced by powder metallurgy M390 and M398 Microclean® produced by Böhler. Main interest is the analysis & measurement of their surface roughness and topography after the processing by DNMG and WNMG geometry of cutting inserts with 0.4 and 0.8 mm radius after hard turning at the same process parameters for both materials and all types of cutting inserts. The comparative studies were carried out for the microgeometrical and chip formation research on the machined surfaces and the technological processes were assessed, including chip diagrams. Spectral analysis was used to verify the composition of investigated materials by spectral analysis measuring device. In order to examine the surfaces in detail, in addition to the standard roughness measurement, surface topography was performed by the coherent correlation interferometric microscope. The results of surface roughness as well as topography show higher wear resistance of M398 material compared to M390. This was confirmed indirectly by the fact that it is primarily shown by the higher surface roughness of M398 after machining under the same conditions. These properties are obtained by a higher content of additive elements, respectively of their carbides. Based on the conclusions of these experiments, additional knowledge and recommendations for the processing of these materials were created.

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Section: Introductionmentioning

confidence: 99%

Surface Roughness, Topography, Accuracy, Chip Formation Analysis & Investigation of M390 and M398 Steels after Hard Machining

Majerík¹,

Majerský²,

Barényi³

et al. 2023

Manufacturing Technology

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show abstract

“…This method was successfully applied for face milling [79] and conventional turning operations [80]. However, if the cutting tool has a significant wear, the generated surface topography may look quite different.…”

mentioning

confidence: 99%

Theoretical Roughness Modeling of Hard Turned Surfaces Considering Tool Wear

Felhő

Varga

2022

Machines

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Surface roughness is an important factor in metal cutting, and usually different surface roughness characteristics are used to control the quality of the machined surfaces. However, as the cutting tool wears out during the cutting process, the roughness values change. In most cases, theoretical roughness values are calculated without taking the wear characteristics of the tool into account. For this reason, the calculated and measured roughness values may differ from each other, and the tendency of their change may also be different. This paper presents a method for the determination of the theoretical roughness of hard turned surfaces considering the wear of the cutting tool. The purpose of the analyses performed was to show the effect of wear trace on the tool and the roughness of the machined surface and to give a possible method to take the wear into account when calculating the theoretical roughness values. During the investigations, the shape of the actual (worn) edge section of the cutting tool was recorded by an optical microscope, and the theoretical surface roughness values were calculated with that profile by a CAD modeling method developed earlier. Cutting experiments were conducted on a lathe machine with two similar cutting tools, one of them has significant tool wear, while the other was a completely new one. The calculated theoretical roughness values were compared with real measured roughness values, and the error of the estimates was between 8.7 and 68.3%, larger errors were found at lower feeds.

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Effect of Milling Parameters on the Surface Roughness of SiCp/Al Materials

Wang¹,

Yong-qiang²,

Zhu³

2023

Manufacturing Technology

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The presence of reinforcing particles SiCp seriously affects the cutting surface quality of SiCp/Al materials.In this study, different machining parameters were tested to obtain good surface quality, and the surface quality of SiCp/Al alloy material under different milling parameters was studied by using the surface profilometer and scanning electron microscope to explore the effect of cutting parameters on surface quality. The results showed that the Surface roughness value increased with the increase of feed rate and milling speed, and milling speed was the dominant factor in the microstructure evolution of the machined surface. In addition, an exponential model related to feed rate and milling speed was constructed.

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Accuracy and topography analysis of hard machined surfaces

Cited by 4 publications

References 20 publications

Surface Roughness, Topography, Accuracy, Chip Formation Analysis & Investigation of M390 and M398 Steels after Hard Machining

Surface Roughness, Topography, Accuracy, Chip Formation Analysis & Investigation of M390 and M398 Steels after Hard Machining

Theoretical Roughness Modeling of Hard Turned Surfaces Considering Tool Wear

Effect of Milling Parameters on the Surface Roughness of SiCp/Al Materials

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