Energiebedarf für die Hartmetallherstellung

Karpuschewski, Bernhard; Kalhöfer, Eckehard; Joswig, Dirk; Rief, Markus

doi:10.3139/104.110599

Cited by 11 publications

(3 citation statements)

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“…Process chain scenario and data sources (Sphera Solutions, Inc, 2023; Ecoinvent, 2023; Shipway et al , 2019; Qi et al , 2009; Park et al , 2001; Li et al , 2021; Karpuschewski and Kalhöfer, 2011; Hernández et al , 2017; Priarone and Ingarao, 2017)…”

Section: Figurementioning

confidence: 99%

Life cycle analysis results for engine blisk LCA

Fricke,

Bergs,

Ganser

et al. 2024

AEAT

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Purpose The aviation industry has seen consistent growth over the past few decades. To maintain its sustainability and competitiveness, it is important to have a comprehensive understanding of the environmental impacts across the entire life cycle of the industry, including materials, processes and resources; manufacturing and production; lifetime services; reuse; end-of-life; and recycling. One important component of aircraft engines, integral rotors known as Blisks, are made of high-value metallic alloys that require complex and resource-intensive manufacturing processes. The purpose of this paper is to assess the ecological and economical impacts generated through Blisk production and thereby identify significant ‘hot-spots’. Design/methodology/approach This paper focuses on the methodology and approach for conducting a full-scale Blisk life cycle assessment (LCA) based on ISO 14040/44. Unlike previous papers in the European Aerospace Science Network series, which focused on the first two stages of LCA, this publication delves into the “life cycle impact assessment” and “interpretation” stages, providing an overview of the life cycle inventory modeling, impact category selection and presenting preliminary LCA results for the Blisk manufacturing process chain. Findings The result shows that the milled titanium Blisk has a lower CO2 footprint than the milled nickel Blisk, which is less than half of the global warming potential (GWP) of the milled nickel Blisk. A main contributor to GWP arises from raw material production. However, no recycling scenarios were included in the analysis, which will be the topic of further investigations. Originality/value The originality of this work lies in the detailed ecological assessment of the manufacturing for complex engine components and the derivation of hot spots as well as potential improvements in terms of eco-footprint reduction throughout the products cradle-to-gate cycle. The LCA results serve as a basis for future approaches of process chain optimisation, use of “greener” materials and individual process improvements.

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Section: Figurementioning

confidence: 99%

Life cycle analysis results for engine blisk LCA

Fricke,

Bergs,

Ganser

et al. 2024

AEAT

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“…The knowledge whether this energy has an influence on the total energy consumption of the process has to be highlighted. Previous publications investigated the energy necessary to manufacture cemented carbide cutting inserts [11,13,5]. Tools comparable to the tools used during the investigations incorporate a primary energy demand of 4470 kJ [11].…”

Section: Resource Efficiency Of High Pressure Lubricoolant Supply Strmentioning

confidence: 99%

Energy Saving Potentials of High Pressure Lubricoolant Supply

2015

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During recent years high pressure lubricoolant supply in cutting technologies has been emerging, especially for difficult to cut materials in the aerospace industry, for example Inconel 718 or titanium alloys. The potentials are highly promising with respect to reduced flank wear, lowered process temperatures and thus higher achievable productivity rates. This paper aims to highlight possibilities of the technology whilst focusing on energy efficiency matters. The area of conflict between high pressure, thus high power electrical power demand as well as higher productivity rates, and low pressure, thus high energy efficiency, will be discussed in detail and propositions will be made. It will be shown that processes exists in which high pressure lubricoolant supply is highly productive and even ecologically beneficial, despite of the additional power consumption caused by high pressure pumping aggregates.

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“…For reasons of simplicity, the connection power of the machine tools has been multiplied with a constant factor of 0.3 and the time required to manufacture one slot. The ecological assessment of the consumed metal cutting tools is based on the database probes as well as the literature [12][13][14]. For central units, illumination and climatization at a constant value of 70 W/m 2 has been used.…”

Section: Ecological Assessmentmentioning

confidence: 99%

Multi-Criteria Assessment of Machining Processes for Turbine Disc Slotting

Klocke

Bergs

Doebbeler

et al. 2018

JMMP

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Many different process chains are possible to manufacture profiled grooves in turbine discs. Broaching with high speed steel tools is still state of the art today but as a consequence of the rising demand for aero engines, the disc manufacturers are striving for alternative high performance processes to increase both flexibility and productivity in the manufacturing of these safety critical features. Broaching machines are oftentimes at a bottleneck in the production of rotating turbine discs. Several other machining processes have been discussed in the context of slotting, such as broaching with carbide tools, milling, water jet machining, W-EDM and grinding. Within this paper a multi-criteria assessment approach is presented dealing with slotting processes. The assessment comprehends economical, ecological, flexibility and productivity criteria, and is based on data gathered with an aero engine OEM. The technological aspects such as tool life and productivities are based on real machining tests that have been carried out within the project HoFePro. The assessment is conducted for multiple profile shapes that represent different sizes and geometrical complexities of profiled grooves. The manufacturing processes within the assessment include broaching with HSS and carbide, milling with ceramics and carbide (side and end) as well as profile milling with carbide tools. The underlying workpiece material is a nickel-based alloy.

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Energiebedarf für die Hartmetallherstellung

Cited by 11 publications

References 0 publications

Life cycle analysis results for engine blisk LCA

Life cycle analysis results for engine blisk LCA

Energy Saving Potentials of High Pressure Lubricoolant Supply

Multi-Criteria Assessment of Machining Processes for Turbine Disc Slotting

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