Machining of pure molybdenum using WEDM

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27230%2F20%3A10245511" target="_blank" >RIV/61989100:27230/20:10245511 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/44555601:13420/20:43896019 RIV/00216305:26210/20:PU136522

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0263224120305480?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0263224120305480?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.measurement.2020.108010" target="_blank" >10.1016/j.measurement.2020.108010</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Machining of pure molybdenum using WEDM

Popis výsledku v původním jazyce

Wire electrical discharge machining (WEDM) is an unconventional technology that is indispensable in almost all industries as well as pure molybdenum, which is used in almost all areas of industry, from energy through chemical, automotive, metallurgical to physical laboratory equipment designed for vacuum. However, due to its energy demands, the effort is to maximize the cutting speed with an emphasis on maintaining the quality of machined surfaces, which also often contain a number of defects in the form of cracks or burnt cavities. For this reason, the aim of this study was to find the optimum setting of the machine parameters using a design of experiment consisting of 33 rounds, with the material of pure molybdenum being examined. An extensive analysis of all machined samples was performed in terms of defects occurrence in the surface and subsurface layers, the analysis of topography and morphology including 3D surface reliefs, the analysis of chemical composition with dependence on diffusion processes and measurement of residual stress in the workpieces. Due to the high occurrence of cracks, the influence of the cut orientation through the semi-finished product was tested, and its fundamental influence on the occurrence of massive cracks was found out. In addition, to minimize the topography parameters and maximize the cutting speed, the machine parameters were set to: gap voltage = 70 V, pulse on time = 6 µs, pulse off time = 30 µs, wire speed 10 m.minMINUS SIGN 1 and discharge current = 35 A. (C) 2020 Elsevier Ltd

Název v anglickém jazyce

Machining of pure molybdenum using WEDM

Popis výsledku anglicky

Wire electrical discharge machining (WEDM) is an unconventional technology that is indispensable in almost all industries as well as pure molybdenum, which is used in almost all areas of industry, from energy through chemical, automotive, metallurgical to physical laboratory equipment designed for vacuum. However, due to its energy demands, the effort is to maximize the cutting speed with an emphasis on maintaining the quality of machined surfaces, which also often contain a number of defects in the form of cracks or burnt cavities. For this reason, the aim of this study was to find the optimum setting of the machine parameters using a design of experiment consisting of 33 rounds, with the material of pure molybdenum being examined. An extensive analysis of all machined samples was performed in terms of defects occurrence in the surface and subsurface layers, the analysis of topography and morphology including 3D surface reliefs, the analysis of chemical composition with dependence on diffusion processes and measurement of residual stress in the workpieces. Due to the high occurrence of cracks, the influence of the cut orientation through the semi-finished product was tested, and its fundamental influence on the occurrence of massive cracks was found out. In addition, to minimize the topography parameters and maximize the cutting speed, the machine parameters were set to: gap voltage = 70 V, pulse on time = 6 µs, pulse off time = 30 µs, wire speed 10 m.minMINUS SIGN 1 and discharge current = 35 A. (C) 2020 Elsevier Ltd

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

21100 - Other engineering and technologies

Projekt

<a href="/cs/project/LM2015041" target="_blank" >LM2015041: CEITEC Nano</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Measurement

ISSN

0263-2241

e-ISSN

—

Svazek periodika

163

Číslo periodika v rámci svazku

108010

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

13

Strana od-do

—

Kód UT WoS článku

000575772000006

EID výsledku v databázi Scopus

2-s2.0-85085555840