Proven technology of additive manufacturing of hydraulic pump blades with LSP-treated surfaces

0559053 - FZÚ 2023 RIV CZ eng Z - Pilot plant, v. technol., variety, breed
Ackemann, M. - Šafka, J. - Véle, F. - Zulic, Sanin - Krátký, T.
Proven technology of additive manufacturing of hydraulic pump blades with LSP-treated surfaces.
Internal code: 18/HiLASE2021 ; 2022
Technical parameters: Aplikace technologie Laser shock peening na 3D tištěný materiál vystavený kavitační erozi může výrazně prodloužit životnost zpracované součásti. Bylo zjištěno, že aplikace je možná.
Economic parameters: Výsledky budou využity pro další projekty a aplikace zaměřené na zvýšení kavitační odolnosti. Tyto aplikace by měly generovat komerční příjem v závislosti na počtu aplikací a průmyslových partnerů
R&D Projects: GA TA ČR TN01000038
Institutional support: RVO:68378271
Keywords : Selecting Laser Melting * Laser Shock Peening
OECD category: Optics (including laser optics and quantum optics)

The aim of this proven technology is the progressive manufacturing of geometrically complex hydraulic pump blades from AISI 304L stainless steel. To achieve this goal, Selective Laser Melting (SLM) additive technology was used. Moreover, the surface of the blades was treated using Laser Shock Peening (LSP) technology to increase the performance of the blades. In the additive manufacturing part, process parameters were evaluated for selected steel to ensure reliable melting and the lowest possible porosity. Another goal was to achieve the maximal quality of the surface in order to reduce conventional finishing operations needed to assemble the part into the pump unit. LSP surface treatment plastically deforms the part and it is changing the residual stress state and improves the mechanical properties (including fatigue life)
Permanent Link: https://hdl.handle.net/11104/0332470