Erosion capability of ultra-high-speed continuous waterjet and pulsating waterjet: the comparison

0478121 - ÚGN 2018 RIV CZ eng C - Conference Paper (international conference)
Sitek, Libor - Hlaváček, Petr - Klichová, Dagmar - Trieb, F. - Pude, F.
Erosion capability of ultra-high-speed continuous waterjet and pulsating waterjet: the comparison.
Vodní paprsek 2017 - výzkum, vývoj, aplikace. Ostrava: Ústav geoniky AV ČR, 2017 - (Klichová, D.; Sitek, L.), s. 175-193. ISBN 978-80-86407-71-5.
[Vodní paprsek 2017 - výzkum, vývoj, aplikace. Lednice (CZ), 13.09.2017-15.09.2017]
R&D Projects: GA MŠMT ED2.1.00/03.0082; GA MŠMT(CZ) LO1406; GA TA ČR(CZ) TA04020986
Institutional support: RVO:68145535
Keywords : hyperpressure * hydraulic power * ultra-high-speed waterjet * pulsating waterjet
OECD category: Mechanical engineering

Advantages and possibilities of continuous ultra-high-speed waterjets (with
pressures of 600 MPa and more) when cutting metals are well known to
the professional public both from scientific studies and from practice. In addition
to efficiency increased as water pressure increases and reduced water
consumption, abrasive consumption can also be reduced in the case of abrasive
waterjet. Ultra-high-speed waterjet technology allows not only to cut metal sheets
with pure water, but also allows cutting of harder materials such as ceramics.
Despite the initial suspicion and technical problems associated with the reliability
and sealing of some hyperpressure elements, high-pressure devices generating
water pressures around 600 MPa are now commercially available. However, no
comparison has been made so far concerning the efficiency of these jets with
acoustically modulated high-speed pulsating waterjets using relatively low
pressures and higher water flow rates when eroding metallic materials.
The article compares cuts made by pure ultra-high-speed waterjet generated at
hyperpressures (from 500 to 800 MPa) with erosive capabilities of pulsating
waterjets generated on the contrary at water pressures in the order of tens of MPa
on three metallic materials (stainless steel, mild steel and copper) using the same
jet hydraulic power.
Permanent Link: http://hdl.handle.net/11104/0274332