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Comparison of wear of materials Wear Mechanics In Fig. 9a and 9b, we can observe the selected surface wear of samples of materials Mn steel – HR and Mn steel - Q&P 500 °C.
Das, A comprehensive study on the effect of annealing temperature on the tensile and impact behavior of automotive-grade medium manganese steel (Fe-6.22 Mn-0.18 C), Journal of Materials Engineering and Performance 33 (2024) 5348-5363
Wu, Influence of changes in alloying elements distribution and retained Austenite (RA) on mechanical properties of high boron alloy during quenching and partitioning (Q&P) process, Journal of Materials Research and Technology 18 (2022) 4748-4761
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Krolczyk, A state-of-the-art review on tool wear and surface integrity characteristics in machining of superalloys, CIRP Journal of Manufacturing Science and Technology 35 (2021) 624-658

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Introduction Because it can improve the machining efficiency and the machining quality, the high-speed machining is usually used to machine the workpieces which are made of the brittle materials, the superhard materials, and the parts with special structures, being researched and used widely [1].
There are various experiential formulae for calculating the cutting force given in many literatures [2], but with the needs of machining the brittle materials, the superhard materials, the super-strength materials and the development of high-speed machining, these traditional experiential formulae are no longer suitable for the modern machining conditions.
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Determine the installation process technical indexes (1)calculation of pressure-in force (1) is the maximum pressure of bound surface ,N/mm2 ; d is combining diameter , mm L is combining length , mm ; is the friction factor of bound surface (2) C1=[1+]/[1-]- (3) C2=[1+]/[1-]+ (4) d1 is the outer diameter of contained member ; d2is the inner diameter of containing workpiece E1，E2 are contained and containing workpiece’s materials elastic modulus is maximum magnitude of interference , mm； v is poisson ratio (2)calculation of magnitude of interference Such as rolling bearing , its inner ring rotate with the axis .
This pressure make journal shrink , inner ring wall swell .
The interference quantity of the bearing inner ring with journal in thin-walled is 0.051~0.101mm , its minmum interfenence amount is 0.051mm , maximum interference amount is 0.101mm , changed amount of interference is 0.05mm , so the accuracy of interference fit is 0.05mm
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The Realization that Automatic Controlling of the Bearing Pressure Machine[J].Journal North China University of Technology.200315(3):54-58.

Acknowledgement This paper is part of the project supported by National Natural Science Foundation of China (60975046).
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[2] Donghai Su, Guohui Han: Journal of Shenyang University of Technology Vol.26 (2004), p. 605-608, in Chinese
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By electroforming, the workpiece material is accreted at atomic size and there are no heat affected zones, cutting force and tool wear.
Acknowledgments The project was supported by the Special Project on Science and Technology of Fujian Province (2008H0028), the Project on Science and Technology of Xiamen, Fujian of China (3502Z20083037) and Scientific Research Foundation of Huaqiao University (09BS625).
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Crop Decision Tree Classification Extraction Based on MODIS NDVI in Beijing Shiwei Dong1,2,a, Danfeng Sun2,b and Hong Li1,c 1Institute of Agricultural Integrated Development, Beijing Academy of Agriculture and Forest Science, 100097, China 2College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China aemail:dshiwei2006@163.com, bemail: lihsdf@cau.edu.cn, cemail: lihsdf@sina.com Keywords: MODIS NDVI; Decision Tree Classification; Crop Extraction; Crop Pattern Abstract.
Materials and Methods The research adopted MODIS data in 2007 year from NASA MODIS data product distribution website, and the resolution was 250 meters.
Acknowledgements This work was financially supported by the Beijing Science and Technology Programs.
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