EFFECT OF FINISHING MACHINING ON THIN-WALLED NICKEL ALLOY COMPONENTS

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F25%3A00388935" target="_blank" >RIV/68407700:21220/25:00388935 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

EFFECT OF FINISHING MACHINING ON THIN-WALLED NICKEL ALLOY COMPONENTS

Popis výsledku v původním jazyce

The machining of thin-walled components made from Inconel 718 presents considerable challenges due to the alloy’s poor machinability, high thermal strength, and low structural stiffness. This study investigates the influence of cutting speed and cooling strategy under dry, flood, and minimum quantity lubrication (MQL) conditions during side milling of thin-walled specimens. Using a full factorial design, the effects on cutting forces, surface roughness, wall deformation, and tool wear were evaluated. Results showed that cutting forces generally decreased with increasing cutting speed, although an anomalously low force was observed for dry machining at 100 m/min, likely caused by elastic deflection of the wall reducing tool engagement. Surface quality was highest for flood cooling at moderate speeds, while dry machining produced unstable built-up edge formation and higher roughness. Wall deformation was most pronounced for dry machining at low speeds, whereas MQL maintained low flatness deviations and minimal thickness taper at moderate speeds. Tool wear was highest for dry machining and lowest for flood cooling, with MQL providing intermediate performance. The findings define a narrow process window that balances dimensional accuracy, surface integrity, and tool life for thin-walled Inconel 718 milling, providing guidance for coolant-limited aerospace manufacturing.

Název v anglickém jazyce

EFFECT OF FINISHING MACHINING ON THIN-WALLED NICKEL ALLOY COMPONENTS

Popis výsledku anglicky

The machining of thin-walled components made from Inconel 718 presents considerable challenges due to the alloy’s poor machinability, high thermal strength, and low structural stiffness. This study investigates the influence of cutting speed and cooling strategy under dry, flood, and minimum quantity lubrication (MQL) conditions during side milling of thin-walled specimens. Using a full factorial design, the effects on cutting forces, surface roughness, wall deformation, and tool wear were evaluated. Results showed that cutting forces generally decreased with increasing cutting speed, although an anomalously low force was observed for dry machining at 100 m/min, likely caused by elastic deflection of the wall reducing tool engagement. Surface quality was highest for flood cooling at moderate speeds, while dry machining produced unstable built-up edge formation and higher roughness. Wall deformation was most pronounced for dry machining at low speeds, whereas MQL maintained low flatness deviations and minimal thickness taper at moderate speeds. Tool wear was highest for dry machining and lowest for flood cooling, with MQL providing intermediate performance. The findings define a narrow process window that balances dimensional accuracy, surface integrity, and tool life for thin-walled Inconel 718 milling, providing guidance for coolant-limited aerospace manufacturing.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20301 - Mechanical engineering

Projekt

<a href="/cs/project/EF16_019%2F0000826" target="_blank" >EF16_019/0000826: Centrum pokročilých leteckých technologií</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název statě ve sborníku

Technological Forum2025

ISBN

978-80-87583-57-9

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

104-109

Název nakladatele

Ing. Jan Kudláček

Místo vydání

Jaroměř

Místo konání akce

Herbertov

Datum konání akce

24. 6. 2025

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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