Publication detail
Thermal conductivity of Cu7.2Ni1.8Si1Cr Copper alloy produced via SLM and ability of thin-wall structure fabrication
MAŠEK, J.
Czech title
Tepelná vodivost slitiny mědi Cu7.2Ni1.8Si1Cr vyrovené metodou SLM a možnost výroby tenkých stěn
English title
Thermal conductivity of Cu7.2Ni1.8Si1Cr Copper alloy produced via SLM and ability of thin-wall structure fabrication
Type
lecture
Language
en
Original abstract
Three parts – a disk with inner holes and two cylinders with thin-wall web of 0.325 mm and 1.625 mm – were produced by Selective laser melting technology from a copper alloy Cu7.2Ni1.8Si1Cr powder. Based on the previous experience with this copper material, the fabrication was successfully processed with up to 5 % dimensional accuracy according to CAD model. The fabricated samples were tested in an experimental thermo-vacuum chamber to reveal the material thermal conductivity since no data are freely available. Based on the reference samples testing, the evaluation process was upgraded by considering a heat transfer by radiation. The measured thermal conductivity of the SLM produced alloy Cu7.2Ni1.8Si1Cr was 3.4 times lower than the value of a bulk material AMPCOLOY 944 with a similar chemical composition.
English abstract
Three parts – a disk with inner holes and two cylinders with thin-wall web of 0.325 mm and 1.625 mm – were produced by Selective laser melting technology from a copper alloy Cu7.2Ni1.8Si1Cr powder. Based on the previous experience with this copper material, the fabrication was successfully processed with up to 5 % dimensional accuracy according to CAD model. The fabricated samples were tested in an experimental thermo-vacuum chamber to reveal the material thermal conductivity since no data are freely available. Based on the reference samples testing, the evaluation process was upgraded by considering a heat transfer by radiation. The measured thermal conductivity of the SLM produced alloy Cu7.2Ni1.8Si1Cr was 3.4 times lower than the value of a bulk material AMPCOLOY 944 with a similar chemical composition.
Keywords in Czech
Aditivní výroba, výrobní přesnost metody SLM, slitina mědi Cu7.2Ni1.8Si1Cr, struktura tenkých stěn, testování tepelné vodivosti
Keywords in English
Additive manufacturing, SLM production accuracy, Copper alloy Cu7.2Ni1.8Si1Cr, Thin-wall structures, Thermal conductivity testing
Released
07.11.2018
Publisher
Brno University of Technology
Location
READ 2018, Brno, ČR
Pages count
10