Effect of diamond smoothening on the structure and properties of the deposited metal in the laser-affected zone

Razumov, M. S.; Zubkov, N. S.; Afanas’eva, L. E.

doi:10.1007/s11041-010-9220-y

Cited by 4 publications

(6 citation statements)

References 3 publications

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“…Scale and outflow can be removed with hand files, wire brushes, deburring machines, and belt sanders. Mechanical grinding [22] and smoothing with diamond tools [23] can improve the geometrical structure of a laser-cut surface.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Centrifugal Shot Peening on the Surface Properties of Laser-Cut C45 Steel Parts

Skoczylas

Zaleski

2019

Materials

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This article presents the results of experimental studies of the impact of centrifugal shot peening parameters on the roughness, microstructure, and microhardness of the surface layer of laser-cut C45 steel parts. Residual stress distributions and the presence of iron oxides on the surface of these elements were also examined. Centrifugal shot peening tests were performed on an FV-580a vertical machining center while using a specially designed peening head. The parameters that were varied during centrifugal shot peening included tangential speed of the tool vg and feed rate vf. The use of centrifugal shot peening for finish machining of laser-cut C45 steel parts allowed for obtaining a four-fold reduction in the surface roughness parameters Ra and Rz. As a result of shot peening, the geometrical structure of the surface of the steel parts was modified and it acquired new beneficial features, such as large values of the rounding radii of the micropeaks and high material ratios (Rmrmax = 92%). At the same time, the surface layer was hardened (microhardness increased by 16%) and a compressive residual stress layer was produced on the surface of the workpieces. Additionally, as the shot impacted the processed surface, combustion products were “blasted” or “sheared” off it. Shot peening using the proposed technique can be successfully performed while using CNC machines.

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Section: Introductionmentioning

confidence: 99%

“…The use of a diamond tool is associated with the occurrence of sliding friction between the tool and the surface of the workpiece, which leads to an increase in temperature in the machining zone. Hardness in the edge zone is higher than that after laser cutting; discontinuities and microcracks also appear [23].…”

Section: Introductionmentioning

confidence: 99%

Effect of Centrifugal Shot Peening on the Surface Properties of Laser-Cut C45 Steel Parts

Skoczylas

Zaleski

2019

Materials

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“…Flash can be removed from the bottom edge of a workpiece using hand files, deburring machines, wire brushes and belt sanders. The geometric structure of laser-cut surfaces and their properties can be improved by using centrifugal shot peening [ 42 ], smoothing with diamond tools [ 43 ], or mechanical grinding [ 44 ].…”

Section: Introductionmentioning

confidence: 99%

“…This leads to an increase in the temperature of the treated area, which causes phase changes, and ultimately an increase in the hardness of the part in the edge zone, relative to its hardness after laser cutting. An adverse effect of smoothing with a diamond tool is the appearance of discontinuities and microcracks on the processed surface [ 43 ].…”

Section: Introductionmentioning

confidence: 99%

“…A review of the literature shows that laser-cut surfaces require finishing. The methods used so far in finishing laser-cut parts produce surface defects [ 43 , 44 ], generate tensile stress in the surface layer [ 44 ], and often require the use of expensive special tools [ 42 ]. The beneficial effect of ball burnishing on the state of the surface layer of parts with a hardness above 45 HRC is well known, but there are no studies showing that this method could be applied in the processing of laser-cut parts.…”

Section: Introductionmentioning

confidence: 99%

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Selected Properties of the Surface Layer of C45 Steel Parts Subjected to Laser Cutting and Ball Burnishing

Skoczylas

Zaleski

2020

Materials

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In this article, we report the results of experimental studies on the impact of ball burnishing parameters on the roughness, microstructure and microhardness of the surface layer of laser-cut C45 steel parts. We also analysed the distribution of residual stresses generated in the surface layer of these parts. Laser-cut parts often require finishing to improve the quality of their surface. The tests performed in this study were aimed at assessing whether ball burnishing could be used as a finishing operation for parts of this type. Ball burnishing tests were performed on an FV-580a vertical machining centre using a mechanically controlled burnishing tool. The following parameters were varied during the ball burnishing tests: burnishing force Fn, path interval fw and the diameter of the burnishing ball dn. Ball burnishing of laser-cut C45 steel parts reduced the surface roughness parameters Sa and Sz by up to 60% in relation to the values obtained after laser cutting. Finish machining also led to the reorganization of the geometric structure of the surface, resulting in an increase in the absolute value of skewness Ssk. This was accompanied by an increment in microhardness (maximum microhardness increment was ΔHV = 95 HV0.05, and the thickness of the hardened layer was gh = 40 µm) and formation of compressive residual stresses in the surface layer.

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Surface micromorphology and abrasive wear resistance of tool steel after gas-laser cutting

Afanasieva

Barabonova

Ratkevich

et al. 2016

J. Synch. Investig.

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Effect of diamond smoothening on the structure and properties of the deposited metal in the laser-affected zone

Cited by 4 publications

References 3 publications

Effect of Centrifugal Shot Peening on the Surface Properties of Laser-Cut C45 Steel Parts

Effect of Centrifugal Shot Peening on the Surface Properties of Laser-Cut C45 Steel Parts

Selected Properties of the Surface Layer of C45 Steel Parts Subjected to Laser Cutting and Ball Burnishing

Surface micromorphology and abrasive wear resistance of tool steel after gas-laser cutting

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