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Pandova I.,FVT TU Kosice with Seat in Presov
Advanced Materials Research | Year: 2014

Manufacturing activities of people and combustion engines utilisation are accompanying by development of various gases, that are not natural part of atmosphere or their production exceedes limiting attributes specified for them. Burning fossil fill, fuelling by burning engines escape to atmosphere nitrogen oxides, carbon oxide, carbon dioxide, sulphur oxides, organic compounds as aldehydes, ketones, polycyclic aromatic hydrocarbons. At present the attention turnes primarily on so-called greenhouse gases and gases impierment stratospferic ozonous layer, between that are belong also nitrogen oxides, carbon dioxide, methane, halogenic hydrocarbons. At concentration reduction of greenhouse gases partially sorbents are usable, which includes also zeolites. © (2014) Trans Tech Publications, Switzerland. Source


Duplak J.,FVT TU Kosice with Seat in Presov | Cuma M.,FVT TU Kosice with Seat in Presov | Kormos M.,FVT TU Kosice with Seat in Presov
Key Engineering Materials | Year: 2014

The main part of Standard ISO 3685 is T-νc dependence for various cutting materials. The Standard ISO 3685 contains main properties and characteristics for three most important cutting materials those are used in engineering practice. These cutting materials are used for cutting tools made of high speed steel, cutting ceramic and sintered carbide. Some types of cutting materials are defined by means of descriptions in standards ISO, some types by means of catalogues from the manufacturer. There are a lot of types of cutting materials they have not been defined theirs properties exactly yet and theirs properties have to be defined on experiments. There is a presumption that descriptions in standards ISO are not correct and these standards have to be examined and verified, because that this fact have to be confirmed or disproved. Accuracy and completeness technical standards ISO are very important part quality of manufacturing. Article describes process how to define T-νc dependence for cutting tools made of high speed steel, cutting ceramic and sintered carbide, because were found deficiencies in valid standard ISO 3685. © (2014) Trans Tech Publications, Switzerland. Source


Duplak J.,FVT TU Kosice with Seat in Presov | Orlovsky I.,FVT TU Kosice with Seat in Presov | Cuma M.,FVT TU Kosice with Seat in Presov
Advanced Science Letters | Year: 2013

Durability of cutting tool defines lifetime of this cutting tool and it determines its suitability for select technological operation. Technical science defines a lot of different factors, that they may be cause of shorter cutting tool lifetime. Some types of cutting materials are defined by means of descriptions in standards ISO, some types by means of catalogues from the manufacturer. There are a lot of types of cutting materials they have not been defined theirs properties exactly yet and theirs properties have to be defined on experiments. There is a presumption that descriptions in standards ISO are not correct and these standards have to be examined and verified, because that this fact have to be confirmed or disproved. Accuracy and completeness technical standards ISO are very important part quality of manufacturing. Only correct standards ISO should be used like instruction, or tool for manufacturing process of companies. The article describes process how to define and analytically express durability dependence for selected cutting tools, specifically high speed steel (HSS), cutting ceramic (Al2O3) and sintered carbide (P20+TiN). © 2013 American Scientific Publishers All rights reserved. Source


Michalik P.,FVT TU Kosice with Seat in Presov | Zajac J.,FVT TU Kosice with Seat in Presov | Hatala M.,FVT TU Kosice with Seat in Presov
Advanced Science Letters | Year: 2013

The paper deals by two CAM software products that are used for creation of programs for CNC machining. Proceeding of programming itself depends on kind CNC machine, geometrical shape and requested accuracy, kind of workpiece material and also on possibilities of software. On the base of accessibility there was software products selected: Creo 1.0, WCam2K. © 2013 American Scientific Publishers All rights reserved. Source


Panda A.,FVT TU Kosice with Seat in Presov | Duplak J.,FVT TU Kosice with Seat in Presov | Jurko J.,FVT TU Kosice with Seat in Presov
Applied Mechanics and Materials | Year: 2013

Specification cutting tools durability made of cutting ceramic in machining process of steel 80MoCrV4016 is very important for economics of small and medium-sized enterprises, because cutting tool durability is factor that significantly affects the budget of these enterprises. This problematic is determined for small and medium-sized manufacturers of bearings, because steel 80MoCrV4016 is most commonly used for production of bearings. Durability of cutting tool defines lifetime of this cutting tool and it determines its suitability for select technological operation. Especially for cutting ceramic is necessary to define durability dependence on available set of cutting speeds and to determine lifetime of tools made of cutting ceramic. Technical science defines a lot of different factors, that they may be cause of shorter cutting tool lifetime. For increase cutting tool durability is necessary maximally possible elimination of these factors. Determination of cutting tool durability is very important, because provides comprehensive information how to determine appropriate technological conditions for selected cutting tool. In engineering is for determination of cutting tools durability used T-vc dependence. The article describes process how to create durability dependence for cutting tools made of cutting ceramic by means of T-vc dependence in machining process of steel 80MoCrV4016. © (2013) Trans Tech Publications, Switzerland. Source

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