Additive Manufacturing for Enhanced Performance of Molds

Brøtan, Vegard; Berg, Olav Åsebø; Sørby, Knut

doi:10.1016/j.procir.2016.05.074

Cited by 45 publications

(22 citation statements)

References 5 publications

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“…Conformal cooling has become a wellestablished principle when producing moulds in additive manufacturing with cooling channel closely following the surface profile of the cavity. The use of conformal cooling channels is already seen in industries such as plastic injection moulding, blow moulding, sheet metal forming, and to some extent bulk forming such as extrusion, rolling, and forging [3,6]. Conformal cooling enhances thermal control and can potentially drastically lower cycle times.…”

Section: Moulds and Dies Based On Additive Manufacturingmentioning

confidence: 99%

“…Such venting systems has successfully been demonstrated both in injection moulding of polymers and in low-pressure die casting of aluminium. The results presented shows that dies and moulds made by additive manufacturing can improve the part quality, increase the productivity and also extend the life of the tooling [4,6].…”

Section: Moulds and Dies Based On Additive Manufacturingmentioning

confidence: 99%

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Additive Manufacturing for Enhanced Cooling in Moulds for Casting

Hovig¹,

Brøtan²,

Sørby³

2016

Proceedings of the 6th International Workshop of Advanced Manufacturing and Automation

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Abstract-Additive manufacturing allows new design solutions for moulds and dies that can improve quality and productivity in casting processes. Complex cooling channels made by additive manufacturing give fast and reliable cooling and a more accurate control of the solidification. The paper shows a comparison of the cooling time of a die insert with a conventional cooling system and an insert with improved cooling channels. It is shown that improved cooling channels are highly efficient even with air cooling. Air could replace water as cooling medium, which will eliminate the explosion hazard in aluminium casting.

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Section: Moulds and Dies Based On Additive Manufacturingmentioning

confidence: 99%

Section: Moulds and Dies Based On Additive Manufacturingmentioning

confidence: 99%

Additive Manufacturing for Enhanced Cooling in Moulds for Casting

Hovig¹,

Brøtan²,

Sørby³

2016

Proceedings of the 6th International Workshop of Advanced Manufacturing and Automation

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“…The material is easily machined in its annealed state, while higher strength and hardness can be obtained after proper ageing heat treatment [2,3], making it suitable for several applications. Among other applications, the PBF-LB/M material is used in the tooling industry such as injection moulding [4] and aluminium casting [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

An investigation of the anisotropic properties of heat-treated maraging steel grade 300 processed by laser powder bed fusion

Hovig

Azar

Solberg

et al. 2021

Int J Adv Manuf Technol

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In order to explore the possibilities enabled by laser beam powder bed fusion of metals (PBF-LB/M), reliable material models are necessary to optimize designs with respect to weight and stiffness. Due to the unique processing conditions in PBF-LB/M, materials often develop a dominating microstructure that leads to anisotropic mechanical properties, and thus isotropic material models fail to account for the orientation-dependent mechanical properties. To investigate the anisotropy of 18Ni300 maraging steel, tensile specimens were built in seven different orientations. The specimens were heat treated at two different conditions and tested for their tensile properties using digital image correlation (DIC) technique. The microstructure and fracture surfaces are investigated with scanning electron microscope and electron backscatter diffraction. The tensile properties are typical for the material, with a yield strength in the range of 1850 MPa to 1950 MPa, and ultimate tensile strength in the range of 1900 MPa to 2000 MPa. The elastic modulus is 180 GPa, and the elongation at fracture is in the range of 2–6% for all specimens. The strain fields analysed with DIC reveals anisotropic straining in both the elastic and plastic parts of the flow curve for both direct ageing and solution treatment plus ageing specimens. In the former condition, the elastic anisotropy is dictated by the fraction of melt pool boundaries on the transverse surfaces of the specimens. When the material is solution treated prior to ageing, the melt pool boundary effect was supressed.

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“…Znane są różne technologie otrzymywania form do przetwórstwa (np. wtryskiwania) tworzyw, w tym naj-liczniejsze są technologie ubytkowe CM [5] (ok. 98 %) oraz addytywne AM (ok. 2 %, dane szacunkowe na podstawie [4,6,7]). Każda z tych technologii jest stosowana w zależności od pożądanej geometrii form i planowanych cech użytkowych wytworu (wypraski).…”

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“…Udział technologii wtryskiwania w przetwórstwie tworzyw stale rośnie. W roku 2010 na świecie metodą wtryskiwania przetworzono 80 Gg tworzyw polimerowych, a szacuje się, że w roku 2018 będzie to poziom 116 Gg [6,13], co oznacza średnioroczny wzrost 4,9 %. Rynek przetwórstwa wtryskowego tworzyw osiągnie w 2020 r. wartość 16,2 mld dolarów [14].…”

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The influence of cavity mold making technology on the efficiency of plastics processing

Pepliński

2018

Polimery

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Streszczenie: Analizowano wpływ technologii wytwarzania gniazd form wtryskowych -ubytkowej (CM) i addytywnej (AM) -na jakość otrzymanych form, jakość wytworów uzyskanych z ich wykorzystaniem, efektywność przetwarzania i szkodliwość oddziaływania środowiskowego zarówno produktów, jak i procesów wytwarzania form/przetwarzania tworzyw polimerowych. Oceny dokonano na podstawie wartości wskaźników stanów postulowanych odpowiadających modelom matematycznym efektywności ekonomicznej, energetycznej i ekologicznej procesu, a także szkodliwości środowiskowej produktu i procesu przetwarzania tworzyw, opartych na badaniach doświadczalnych w warunkach rzeczywistych.

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Additive Manufacturing for Enhanced Performance of Molds

Cited by 45 publications

References 5 publications

Additive Manufacturing for Enhanced Cooling in Moulds for Casting

Additive Manufacturing for Enhanced Cooling in Moulds for Casting

An investigation of the anisotropic properties of heat-treated maraging steel grade 300 processed by laser powder bed fusion

The influence of cavity mold making technology on the efficiency of plastics processing

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