Anomalies in the Geometric Surface Structure of Shaped Elements Composed of Inconel 718 Alloy

Krawczyk, Bartłomiej; Szablewski, Piotr; Legutko, Stanisław; Smak, Krzysztof; Gapiński, Bartosz

doi:10.3390/ma14247524

Cited by 9 publications

(3 citation statements)

References 34 publications

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“…Improving the quality of manufactured components reduces the number of corrections and scrap parts [16]. Manufacturing processes for difficult-to-machine materials are extremely time-consuming, and the characteristics of these materials lead to rapid tool wear [33]. For instance, the process of machining an aircraft engine shaft made of Inconel 718 alloy takes approximately 20 h on a CNC machine, equivalent to an electricity consumption of about 300 kWh.…”

Section: Introductionmentioning

confidence: 99%

On-Machine Measurement as a Factor Affecting the Sustainability of the Machining Process

Krawczyk,

Szablewski,

Gapiński

et al. 2024

Sustainability

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One of the key aspects of the automation of machining processes is the elimination of manual measurements. This is crucial in the production of precision parts, where the absence of in-process control can lead to an increased number of non-compliant parts, resulting in financial losses for the company. In addition to economic considerations, environmental care is a fundamental requirement for manufacturing companies. While many efforts focus on finding environmentally friendly coolants or reducing machining time, researchers often overlook the impact of the measurement method on the balanced development of machining. The conditions inside CNC machines are quite demanding in terms of maintaining measurement stability. For this reason, this paper presents a comparative study of two types of machine inspection probes. The influence of the measurement axis and the effect of returning the probe to the magazine on the accuracy of the measurement were examined. This study revealed that the probe with a kinematic resistive design has a higher measurement uncertainty (2.7 µm) than a probe based on strain gauges (0.6 µm). This paper emphasizes the positive impact of the conducted activity on the sustainability of machining, highlighting benefits such as resource savings, energy savings, and positive effects on the health and safety of operators.

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Section: Introductionmentioning

confidence: 99%

On-Machine Measurement as a Factor Affecting the Sustainability of the Machining Process

Krawczyk,

Szablewski,

Gapiński

et al. 2024

Sustainability

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“…Inconel 718 is a high-strength material and it belongs to the group of heat resistant alloys based on nickel [ 1 ]. Due to its mechanical and physical properties, such as high strength and creep resistance at high temperatures, it is widely applied in the aircraft industry for manufacturing parts working in the hot section of turbine engines [ 2 ]. Since Inconel 718 also shows low thermal conductivity [ 3 , 4 ] and the ability to be strain hardened, it is considered to be a hard-to-machine material.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Influence of Anti-Wear Coatings on the Surface Quality and Dimensional Accuracy during Finish Turning of the Inconel 718 Alloy

Smak

Szablewski²,

Legutko

et al. 2023

Materials

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This piece of work deals with the influence assessment of the kind of coating of the cutting inserts and their wear on the dimensional accuracy and the top layer microstructure and roughness of the surface machined with constant cutting parameters vc = 85 m/min, f = 0.14 mm/obr and ap = 0.2 mm. The tests were performed on shafts made of Inconel 718 material under the conditions of finish turning, requiring a tool life of more than 20 min. The cutting inserts of identical geometry made of fine-grained carbide covered with coatings were applied by the PVD and CVD method. The values of the obtained diameter dimensions were assessed in reference to the assumed ones, as well as the values of the surface roughness and stereometry and the microstructure of the top layer. The nature and mechanisms of edge wear and its value expressed by the VBC parameter were also assessed. It was determined in the tests that the machined surface quality defined by the Ra and Sa roughness parameters and the dimensional accuracy were influenced not only by the coating microhardness but also by the method of applying the given coating. The lowest values of the tested roughness parameters were observed for the surface machined with an edge, with the S205 coating applied by the CVD method, which was characterized by the lowest microhardness. The edge with this coating also showed the lowest wear, defined by the VBC parameter, which translated into dimensional accuracy. Furthermore, the edge with the S205 coating also provided the best results with regard to the surface layer microstructure. The least favorable results, both in terms of dimensional accuracy and surface roughness, were obtained for the surface machined with a 1115-PVD-coated edge. The highest wear value was also recorded for this edge.

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“…The experimental tests proved that, when milling with constant cut layer thickness, the high feed cutter allowed to obtain twice the cutting volume in comparison with the conventional face cutter. Krawczyk et al [35] performed tests concerning turning on shafts made of Inconel 718. The tests were performed in dry and wet conditions, with changing cutting speed and constant feed and depth of cut.…”

mentioning

confidence: 99%

Surface Inspection and Description in Metrology and Tribology—Vol.1

et al. 2022

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Anomalies in the Geometric Surface Structure of Shaped Elements Composed of Inconel 718 Alloy

Cited by 9 publications

References 34 publications

On-Machine Measurement as a Factor Affecting the Sustainability of the Machining Process

On-Machine Measurement as a Factor Affecting the Sustainability of the Machining Process

Investigation of the Influence of Anti-Wear Coatings on the Surface Quality and Dimensional Accuracy during Finish Turning of the Inconel 718 Alloy

Surface Inspection and Description in Metrology and Tribology—Vol.1

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