PSI - Issue 32

V.B. Dementyev et al. / Procedia Structural Integrity 32 (2021) 291–294 Author name / Structural Integrity Procedia 00 (2019) 000 – 000

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All in all, the use of cutting tools with ТiN coatings in the given technological process is feasible and gives a range of advantages over the use of base tools. Table 2 shows the recommendations for selection of wear-resistant coatings, applied with the use of CVD, according to the operations to be fulfilled.

Table 2. Recommendations for selection of wear-resistant coatings, applied with the use of CVD

Operation

Material of base (Russia)

Recommended coating

Coating thickness, microns

Tool speed, m/min

Coefficient of resistance improvement

ISO Application Group

Without coating 150 - 180

With coating

Drilling

ВК6 ВК8

TiC-TiCN-A l2 O 3

10 - 12

200 - 250

2 - 3

М20, Р25

К20,

Sharpening

ТТ8К6

TiN-TiC-TiN

6 - 8

120

150

2 – 2,8

Р20, М15,К 15

Sharpening

Т5К10 Т30К4 ВК6 ТТ8К6

TiC-TiCN-TiN

8 - 10

180

240

3 – 5

Р35, М35

Р40,

Milling

TiC-TiCN-TiN

6 - 8

120 - 150

180 - 220

2.5 - 3

Р10, К15

Production experience shows that the use of cutting tool with coating leads to a decrease in contact stresses and thermal processes in the cutting zone. This measure results in improved resistance and increased total operation life of tool, the productivity of the process grows and the time, required to machine the parts, drops. Other advantages include increased dimension accuracy, high quality of the machined surface and reduced expenses on tools. The wide range of various coatings allows selection of the optimum variant for any operation conditions. References [1] Vorobiev, A.A., Kondratenko, V.G., Manuilov S.N. (2020) Efficiency of application of modern materials for wear-resistant coatings of the cutting tool used at repair plants of JSC "RZD" Special equipment and technologies of transport. Collection of scientific articles. St. Petersburg, 151-156. [2] Biały , W. (2017) Fundamentals of Mechanical Engineering. PWN [3] Lobanov, M.L., Kardonina, N.I., Rossina, N.G., Yurovskikh A.S. (2014) Protective coatings. Yekaterinburg. [4] Zhu, D., Yan, S., Li, B. (2014) Single-grit modeling and simulation of crack initiation and propagation in SiC grinding using maximum undeformed chip thickness Computational Materials Science. 92, 13-21. [5] Fries, J. Analysis of Machinability and Crack Occurrence of Steels 1.2363 and 1.2343ESR Machined by Die-Sinking EDM http://dx.doi.org/10.3390/coatings10040406 [6] Lv,L. Deng, Z., Liu, T., Li, Z., Liu, W. (2020) Intelligent technology in grinding process driven by data: A review Journal of Manufacturing Processes, 58, 1039-1051. [7] Mikuš , R., Kováč , I., Žarnovský , J. (2014) Effect of Microstructure on Properties of NiCrBSi Alloys Applied by Flame-Powder Deposition Advanced Materials Research, 1059, 1-9. https://doi.org/10.4028/www.scientific.net/AMR.1059.1