Application of nanostructured Zr-ZrN-(Zr,Al)N and Zr-ZrN-(Zr,Cr,Al)N coatings for improvement of tool life and performance in end milling of carbides

The purpose of the work – development of recommendations on correct choice support of hard-alloy plate quality according to the conditions specified of plates operation. In the work there is formed a new approach to the analysis of hard-alloy plates of a metal-cutting tool which develops an approach existing in the RSSs and conditions a necessity to develop a metrological support of plate quality for the conditions of specified working conditions. The approach is based on the simultaneous account of some plate parameters by means of the introduction of conditional quality grades. The investigation results: - the impact of the value spread of mass and dimensions of plates upon plate quality is defined, - the criteria of their division into grades depending on a spread value are defined. Conclusions: the results of plate classification according to the parameters: “plate weight”, “plate length”, Plate width” and “plate thickness differ considerably; plate weight effects most the output parameters of part work-piece machining process, plate thickness impact is the smallest; home plate quality is not so acceptable for the billet high-performance machining of precision parts; the adaptation of acting RSSs to plates taking into account the requirements for modern NC machines; under current conditions a technologist of an engineering enterprise-consumer of plates is unable to order meaningfully their essential number because of the domination of low-quality plates.

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Cutting Output Parameter Effectiveness Control Based on Analysis of Mass-Dimensional Parameters of Replaceable Hard-Alloy Plates

Mokritskii

Savin²,

Konyuhova

et al. 2019

Bulletin of Bryansk State Technical University

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Diagnostics of Engineering Cutting System Using Cutting Force Parameters

Mokritskii

Morozova²

2020

Bulletin of Bryansk State Technical University

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The purpose of this work: the engineering process optimization of 09H17N7Yu steel turning at the expense of creating the procedure allowing the diagnostics of an engineering cutting system state on the results of cutting force control, inverse problem solution, that is, cutting force control according to the analysis results of system state diagnostics, the optimization of cutting mode parameters to ensure the required values of a cutting force, on the basis of the analysis results of a cutting force the tool materials and tool geometry should be recommended for cutter wear-resistance increase, the prediction of tool life at the expense of designing new tool materials and tool geometry for new conditions of their operation. There are presented recommendations to ensure a correct choice of carbide cutting inserts quality for the specified conditions of their operation. On the investigation results there are obtained conclusions: the most promising for special stainless steel 09H17N7Yu turning were tool materials: TC8+TiCN(mkm) + (TiAl)N(3mkm) + Al2O3(5mkm) + TiC(5mkm); TC8+Al2O3(2mkm) + (Ti)CN(5mkm) + (TiAl)N(3mkm) + TiN(3mkm); TC8 + (TiAl)N(3mkm) + Al2O3(3mkm) + (TiAl)N(3mkm) + Al2O3(3mkm); it is defined that at cutting mode forcing (cutting speed 60m/min, depth 2.5mm) or at turning titanium alloy TT-22 more complex in machining the mentioned tool materials met the demands made, that is, real insert life varied from the designed one not considerably (in the first case – 7% maximum, in the second one – 14%), that is the most acceptable. Work novelty: there is offered and substantiated a procedure for cutting force constituents use on the basis of simulation for the choice or design of tool material for turning in different conditions of tool operation.

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Diagnostics of Engineering Cutting System Using Cutting Force Parameters

Mokritskii

Morozova

2020

Bulletin of Bryansk State Technical University

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Application of nanostructured Zr-ZrN-(Zr,Al)N and Zr-ZrN-(Zr,Cr,Al)N coatings for improvement of tool life and performance in end milling of carbides

Cited by 3 publications

References 34 publications

Cutting Output Parameter Effectiveness Control Based on Analysis of Mass-Dimensional Parameters of Replaceable Hard-Alloy Plates

Cutting Output Parameter Effectiveness Control Based on Analysis of Mass-Dimensional Parameters of Replaceable Hard-Alloy Plates

Diagnostics of Engineering Cutting System Using Cutting Force Parameters

Diagnostics of Engineering Cutting System Using Cutting Force Parameters

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