Selection of Synthesis Corundum Grain in Grinding Flat Parts from Hardened Steel 30ChGSA by the Macrogeometry Criterion

Yakov Iosifovich Soler; Le Van Nguyen

doi:10.4028/www.scientific.net/AMM.788.95

Paper Titles

Modeling of the Magnetic Abrasive Machining Process of Flat Surface Workpieces on Numerically Controlled Machine Tools
p.69

Nickel-Based Composition Coating with Titanium Nanoboride
p.75

Plastic Imprint Formation in the Process of Ultrasonic Surface Hardening
p.82

Quality Improvement of Wear-Resistant Coatings in Plasma Spraying Integrated with High-Energy Heating by High Frequency Currents
p.88

Selection of Synthesis Corundum Grain in Grinding Flat Parts from Hardened Steel 30ChGSA by the Macrogeometry Criterion
p.95

Some Provisions of Rational Contact Conditions for a Composite Cutting Tool during Turning Operations on Intermittent Areas
p.102

An Impact of the Magnetic Field on the Fine Copper Structure under Creep Failure Conditions
p.111

Analysis of the Influence of High Temperature Synthesis Parameters on the Structure Formation in the Mechanically Activated 3Ti+Al Powder Mixture
p.117

Cladding of Ni-Cr-Si-B Powder Coatings by an Electron Beam Injected into the Atmosphere
p.123

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 788Selection of Synthesis Corundum Grain in Grinding...

Selection of Synthesis Corundum Grain in Grinding Flat Parts from Hardened Steel 30ChGSA by the Macrogeometry Criterion

Abstract:

The stochastic nature of grinding predetermines the necessity of attracting statistical methods to predict output parameters. In this research the form accuracy indices of flat workpieces EFE_max (the main parameter) and two additional indices EFE_a and EFE_q called the arithmetic average and the quadratic average, respectively are used (GOST 24642-81). In the conditions of violating normality and homoscedasticity of distributions the selection of the grain in the Norton high porous wheels (HPW) made of synthetic corundum 5SG (46, 60) K12VXP is made with an emphasis on a non-parametric method, wherein medians and quartile latitudes are used as one-dimensional frequency distributions. This paper states that grinding by the coarse-grained HPW 5SG46 in comparison with the small-grained 5SG60 made it possible to increase the form accuracy by the predicted medians within the same accuracy quality class: for EFE_max – TFE7; for EFE_a and EFE_q – TFE6. The precision of the form accuracy of the parts 30ChGSA increased most significantly: for EFE_max it increased by 5 times, for EFE_a by 3.1 times, and for EFE_q by 4.2 times. The fact that the heights of microasperity remained practically at the same level , μm; , μm was due to the features of the synthetic corundum grain structure. In this study the EFE_max parameter is used for selecting the wheel grain. The auxiliary parameters of form accuracy are used in calculating the correction indexes of basic models in the multivariate dispersion analysis because they have more information about the status of the part surface.

You might also be interested in these eBooks

Actual Problems and Decisions in Machine Building

View Preview

Info:

Periodical:

Applied Mechanics and Materials (Volume 788)

Pages:

95-101

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.788.95

Citation:

Cite this paper

Online since:

August 2015

Authors:

Yakov Iosifovich Soler, Le Van Nguyen

Keywords:

Average, Form Accuracy, Grinding, Measure of Dispersion, Median, Statistical Method

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] Ya.I. Soler, A.B. Strelkov, D. Yu, Predicting macrogeomerty of parts made of steel 13Cr15Ni4NMo3 while flat grinding by wheels from cubic boron nitride, Handbook. Engineering Journal. 11 (2009) 26-61.

Google Scholar

[2] GOST 24631-81. The form tolerances and surface position. The numerical values, Moscow, (1981).

Google Scholar

[3] S. Lakota, A. Gorog, Flatness measurement by multi-point methods and by scanning methods, Ad Alta: Journal of Interdisciplinary Research. 1 (2011) 124-127.

Google Scholar

[4] R.F. Ye et al., Minimum zone evaluation of flatness error using an adaptive iterative strategy for coordinate measuring machines data, Advanced Materials Research. 472 (2012) 25-29.

DOI: 10.4028/www.scientific.net/amr.472-475.25

Google Scholar

[5] R. Raghunandan, P. Venkataswara Rao, Selection of an optimum sample size for flatness error estimation while using coordinate measuring machine, International Journal of Machine Tools & Manufacture. 47 (2007) 477-482.

DOI: 10.1016/j.ijmachtools.2006.06.008

Google Scholar

[6] K. Nadolny, W. Kaplonek, Analysis of flatness deviations for austenitic stainless steel workpieces after efficient surface machining, Measurement Science Review. 14 (2014) 240-212.

DOI: 10.2478/msr-2014-0028

Google Scholar

[7] S.T. Huang, K.C. Fan, J.H. Wu, A new minimum zone method for evaluating flatness errors, Precision engineering. 15 (1993) 25-32.

DOI: 10.1016/0141-6359(93)90275-f

Google Scholar

[8] Sohyung Cho, Joon-Young Kim, Straightness and flatness evaluation using data envelopment analysis, The International Journal of Advanced Manufacturing Technology. 63 (2012) 731-740.

DOI: 10.1007/s00170-012-3925-6

Google Scholar

[9] Ya.I. Soler, V.K. Nguyen, Predicting grinding efficiency by wheels of different porosity from traditional and new abrasives by criterion of form accuracy of plates R9Mo4Ko8, ISTU Bulletin. 11 (2014) 49-58.

Google Scholar

[10] GOST 24631-81. The form tolerances and surface position. The basic terms and definitions, Moscow, (1981).

Google Scholar

[11] Ya.I. Soler, D. Yu. Kazimirov, A.V. Prokop'eva, Optimizing the grinding of high-speed steel by wheels of cubic boron nitride, Russian Engineering Research. 27 (2007) 22-26.

DOI: 10.3103/s1068798x07120180

Google Scholar