Air-assisted boric acid solid powder lubrication in surface grinding: an investigation into the effects of lubrication parameters on surface integrity of AISI 1045

Surface integrity has attracted the attention of researchers for improving the functional performance of engineering products. Improvement in surface finish, one of the important parameters in surface integrity, has been attempted by researchers through different processes. Grinding has been widely used for final machining of components requiring smooth surfaces coupled with precise tolerances. Proper selection of grinding wheel material and grade with grinding parameters can result in an improved surface finish and improved surface characteristics. The present work reports the study of the effect of grinding parameters on surface finish of EN8 steel. Experiments were performed on surface grinding and cylindrical grinding for optimization of grinding process parameters for improved surface finish. Grinding wheel speed, depth of cut, table feed, grinding wheel material and table travel speed for surface grinding operation, and work speed for cylindrical grinding operation were taken as the input parameters with four types of grinding wheels (Al 2 O 3 of grades K and L, and white alumina of grades J and K). The surface roughness was taken as an output parameter for experimentation. The grinding wheel material and grade have been observed to be the most significant variables for both cylindrical grinding and surface grinding. Surface roughness in the case of surface grinding is better compared to that of cylindrical grinding, which can be attributed to vibrations produced in the cylindrical grinding attachment. Surface roughness ( R a ) values of 0.757 µm in cylindrical grinding and 0.66 µm in surface grinding have been achieved.

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Study on Grinding Crack of Premium Thread Gauge Material 9Mn2V

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.589-590.252 ◽

2013 ◽

Vol 589-590 ◽

pp. 252-257

Author(s):

Ming Chen ◽

Da Peng Dong ◽

Guo Qiang Guo ◽

Qing Long An

Keyword(s):

Residual Stress ◽

Surface Integrity ◽

Heat Affected Zone ◽

Surface Grinding ◽

Surface Residual Stress ◽

Specific Grinding Energy ◽

Grinding Burn ◽

Metallographic Structure

This paper investigates the surface integrity of premium thread gauge material 9Mn2V in reciprocating surface grinding using SG abrasive, which includes metallographic structure for grinding crack, specific grinding energy and surface residual stress. The specific grinding energy and the surface residual stress can be reduced after the workpiece gets tempered, so small grinding depth can lead to the generation of cracks when the workpiece is not tempered. Otherwise, the depth of heat affected zone increases with the increase of grinding depth, but not increases proportionally. After 9Mn2V is tempered, the occurrence of grinding burn and grinding cracks can be improved.

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Study on Surface Integrity of AISI 1045 Carbon Steel when machined by Carbide Cutting Tool under wet conditions

MATEC Web of Conferences ◽

10.1051/matecconf/20179701075 ◽

2017 ◽

Vol 97 ◽

pp. 01075

Author(s):

N. Fauzi Tamin ◽

U.A.A. Azlan ◽

M. Hadzley ◽

N.S. Remle ◽

M. Hairizal Osman ◽

...

Keyword(s):

Carbon Steel ◽

Surface Integrity ◽

Cutting Tool ◽

Carbide Cutting Tool ◽

Aisi 1045

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Influence of Turning by Burnishing on Surface Integrity to Analyze Feasibility of Hybrid Process

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.375-376.411 ◽

2008 ◽

Vol 375-376 ◽

pp. 411-415

Author(s):

Feng Lei Li ◽

Wei Xia ◽

Zhao Yao Zhou ◽

Tian Zhang

Keyword(s):

Surface Roughness ◽

Surface Integrity ◽

Cutting Speed ◽

Hybrid Process ◽

Surface Microhardness ◽

Aisi 1045 Steel ◽

Aisi 1045 ◽

1045 Steel ◽

Taguchi’S Design Of Experiments ◽

Dominant Influence

Burnishing, an ultra-precision superficial plastic deformation process, is used increasingly as a surface enhancement finishing treatment after machining operations not only to give a mirror-like and work-hardened surface but also to impose favorable compressive residual stress in it. To analyze the feasibility of turning-burnishing hybrid process, the Taguchi’s L27(313) orthogonal array method with the analysis of variance (ANOVA) were used to analyze the influence of the initial turning process on surface integrity of roller burnished AISI 1045 steel such as surface roughness, surface microhardness. three turning parameters, namely the cutting feed, cutting depth and cutting speed, three burnishing parameters, namely the burnishing feed, burnishing depth and burnishing speed were selected as the experimental factors in Taguchi’s design of experiments to determine which one has the dominant influence and how it works on burnishing effects, namely the surface roughness and surface microhardness, the interactions between cutting feed, burnishing feed and burnishing depth were considered. The experimental results agreed well with the theoretical analysis and the conclusion is cutting feed has dominant influence on burnished surface integrity.

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