Surface Integrity Analysis when Machining Inconel 718 with Conventional and Cryogenic Cooling

Iturbe, Ariane; Hormaetxe, E.; Garay, A.; Arrazola, P.J.

doi:10.1016/j.procir.2016.02.095

Cited by 110 publications

(40 citation statements)

References 10 publications

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“…One of them [4] mapped defects in the machined surface in relation to the occurrence of wear and built-up edge. Similar results were reported by authors of [5] who correlated them with cryogenic machining. They found that better outcome is obtained with standard cooling.…”

Section: Introductionsupporting

confidence: 90%

Influence of the Milling Cutter Diameter on the Cutting Tool Life when Machining Inconel 718

Zetek¹,

Vozár²,

Bakša³

et al. 2017

DAAAM Proceedings

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Indexable multi-insert milling cutters are the most economical and productive face milling tools. In case of the Inconel alloy machining there are some specific cutting conditions and strategies that influence cutting tool life and surface quality. When the indexable cutting inserts are used, it is recommended to use always down milling and avoid positioning cutter on-centre. For the tool entry is recommended reduce feed rate and use roll on strategy. When different tool dimeters are used there are different cutting conditions which is influenced by the principal cutting edge angle and it influence cutting tool life and tool wear character. This study is focused on the influence of the three different cutter diameter on the cutting tool life when the Inconel 718 is machined. For the tests different cutter diameters with same rounding cutting inserts are used. The trajectory of the movement are simulated for all diameters by the 3D view and on the base of it the real cutting conditions are calculate and setup for the practical experiment. During the tests, the cutting forces are monitored as well as cutting inserts tool wear (2D visualization and 3D visualization). For the comparing of the tool wear character the difference analyses is used and 2D cuts are made for the evaluation of the general tool wear parameters.

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Section: Introductionsupporting

confidence: 90%

Influence of the Milling Cutter Diameter on the Cutting Tool Life when Machining Inconel 718

Zetek¹,

Vozár²,

Bakša³

et al. 2017

DAAAM Proceedings

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show abstract

“…The process can also achieve higher removal higher rates for fishing grinding operations than alternative methods [19]. Additionally, it is noteworthy that using these kinds of tools, due to process temperature and extreme cutting conditions, cutting fluids are required, particularly cutting oil [20][21][22]. Regarding cutting conditions, in line with [23], they can be optimized with the aim of developing the exact windows parameters.…”

Section: Introductionmentioning

confidence: 99%

Super Abrasive Machining of Integral Rotary Components Using Grinding Flank Tools

González

Calleja

Pereira

et al. 2018

Metals

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Manufacturing techniques that are applied to turbomachinery components represent a challenge in the aeronautic sector. These components require high resistant super-alloys in order to satisfy the extreme working conditions they have to support during their useful life. Besides, in the particular case of Integrally Bladed Rotors (IBR), usually present complex geometries that need to be roughed and finished by milling and grinding processes, respectively. In order to improve their manufacturing processes, Super Abrasive Machining (SAM) is presented as a solution because it combines the advantages of the use of grinding tools with milling feed rates. However, this innovative technique usually needed high tool rotary speed and pure cutting oils cooling. These issues implied that SAM technique was not feasible in conventional machining centers. In this work, these matters were tackled and the possibility of using SAM in these five-axis centers with emulsion coolants was achieved. To verify this approach, Inconel 718 single blades with non-ruled surfaces were manufactured with Flank-SAM technique and conventional milling process, analyzing cutting forces, surface roughness, and dimension accuracy in both cases. The results show that SAM implies a suitable, controllable, and predictable process to improve the manufacture of aeronautical critical components, such as IBR.

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“…MQL was found a useful lubricating method to enhance surface quality and tool life, while cryogenic cooling was found very effective in reducing tool wear and lengthening tool life. However, high costs associated with these cutting fluid supply systems are the principal limitation [33][34][35][36][37].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of a Novel Controlled Cutting Fluid Impinging Supply System When Machining Titanium Alloys

2017

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Abstract:Following a comprehensive review on titanium machining and methods of cutting fluid application, this paper presents a new Controlled cutting fluid impinging supply system (Cut-list) developed to deliver an accurate amount of cutting fluid into the machining zone via well-positioned coherent nozzles based on the calculation of the heat generated. The performance of the new system was evaluated against a conventional flood cutting fluid supply system during step shoulder milling of Ti-6Al-4V using vegetable oil-based cutting fluid. The comparison was performed at different cutting speeds and feed rates. Comparison measures/indicators were cutting force, workpiece temperature, tool flank wear, burr formation and average surface roughness (Ra). The new system provided significant reductions in cutting fluid consumption of up to 42%. Additionally, reductions in cutting force, tool flank wear and burr height of 16.41%, 46.77%, and 31.70% were recorded, respectively. Smaller Ra values were also found with the use of the new system.

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Surface Integrity Analysis when Machining Inconel 718 with Conventional and Cryogenic Cooling

Cited by 110 publications

References 10 publications

Influence of the Milling Cutter Diameter on the Cutting Tool Life when Machining Inconel 718

Influence of the Milling Cutter Diameter on the Cutting Tool Life when Machining Inconel 718

Super Abrasive Machining of Integral Rotary Components Using Grinding Flank Tools

Evaluation of a Novel Controlled Cutting Fluid Impinging Supply System When Machining Titanium Alloys

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