Progressive Technologies of Material Disintegration

• Aims and scopes
• Investigated materials
• Cooperation with academic institutions and application spheres
• Participation on project solution
• Selected publications since 2012
• Patents
• Contacts

Laboratories

Liquid jet - Laboratory J165
(wet part)

Liquid jet - Laboratory J163
(dry part)

Aims and Scopes:

Disintegration of materials by pure water jet

• Mechanism of mineral grains disintegration during mixing with liquid
• Mechanism of rock material disintegration
• Mechanism of concrete disintegration
• Mechanism of plastic materials disintegration
• Mechanism of glass disintegration
• Methods of water jet impact efficiency increase – modulation, pulsation
• Methods of water jet efficiency increase of material disintegration – combination with laser or plasma
• Behaviour of jet in extreme conditions – under-pressure, overpressure, high temperatures

Disintegration of materials by abrasive water jets

• Mechanism of abrasive water jet generation
• Mechanism of rock materials disintegration
• Mechanism of concrete disintegration
• Mechanism of plastic materials disintegration
• Mechanism of glass disintegration
• Mechanism of elastic-plastic metals disintegration
• Mechanism of brittle metals disintegration
• Mechanism of ceramics disintegration
• Methods of disintegration efficiency improvement of abrasive water jet– modification of abrasive material
• Methods of efficiency increasing for materials disintegration by abrasive water jet – temperature influencing of materials
• Behaviour of jet in extreme conditions – under-pressure, overpressure, extreme temperatures

Investigated materials:

Amorphous and crystalline materials of all kinds, namely the following ones

Steels

• Low alloyed
• Highly alloyed
• Special ones

Rocks

• Granites
• Marbles
• Sandstones
• Other rocks according to needs of industrial partners

Non-steel metal materials

• Copper and its alloys (brass, bronze)
• Titanium and its alloys
• Lead, zinc, aluminium and their alloys

Glass

• Moulded
• Rolled
• Stick and layered

Ceramic materials

• Fireclays
• Ceramic, abrasion resistant protecting layers on other materials
• For production of cutting tools

Concretes

• For normal construction work
• Corrosion resistant ones for hydraulic structures, tunnels, etc.
• High-strength ones for military and special objects

Plastic materials

• For common use
• Layered and stick ones for heavy-duty constructions
• With reinforcement, for extremely strained elements and constructions

Cooperation with academic institutions and application spheres:

Cooperation with academic institutions

• Kielce University of Technology (prof. Spadło, Dr. Młynarczik, Ing. Bańkowski)
• Faculty of Manufacturing Technologies with the seat in Prešov – TU Košice (prof. Ružbarský, Doc. Krenický)
• Politecnico Milano (prof. Annoni, prof. Monno)

Application sphere

• firm PTV spol.s.r.o., Hostivice
• firm NET spol. s r.o., Staré Město pod Sněžníkem
• ATIC Technology s.r.o.
• firm PWR Composite s.r.o., Ostrava
• firm Stone Ostroměř s.r.o.
• WatAJet S.r.l. Besnate (Italy)
• Watting, s.r.o., Prešov
• DRC s.r.o., Prešov

Participation on project solution:

• Project SGS SP 2020/45 Diagnostics, characterization and modeling of selected materials and their physical properties
• Project SGS SP 2021/64 Diagnostics, characterization and modeling of selected materials and their physical properties II
• Project SGS SP 2022/25 Diagnostics, characterization and modeling of selected materials and their physical properties III
• Project SGS SP2011/83 “Increase of rock disintegration effectiveness by water jet with high density of energy for use in low-production quarries of the Czech Republic“
• Project SGS SP2011/119 “Study of cryogenic temperature influence on quantitative cutting parameters of abrasive water jet on steel sample“
• Project SGS SP2013/22 “Dizintegration of rock materials by liquid jets“
• Project of Visegrad fund 21220321 „Creative meeting of V4 researchers, PhD students and young PhD’s from research field of usage AWJ“
• Project CZ.1.05/2.1.00/01.0040 „RMSTC – Regional Material Science and Technology Centre“. http://www.rmtvc.cz
• Project LO1203 "Regional Material Science and Technology Centre - program of sustainability“
• Project CZ.1.07/2.3.00/45.0021 „Zlepši si techniku“ (Improve your Technical Knowledge)http://www.zlepsisitechniku.cz
• Project of Visegrad fund 21620227 „Silesian cross-border workshop on applied physics“ http://swap.vsb.cz
• Project Student Grant Competitions SP2017/44 „Recycled abrasives for special applications of abrasive water jet (AWJ)“
• Project CZ.1.07/2.4.00/31.0035 – „Spolupráce pro budoucnost“ (Cooperation for the future)
• Project SGS SP2018/43 „Studium povrchových a objemových magnetických vlastností austenitických ocelí a Heuslerových slitin na bázi Fe. Měření kvality směšování při vzniku abrazivního vodního paprsku (AWJ).“
• Project SGS SP2019/26 „Charakterizace materiálů z hlediska jejich optických, magnetických a mechanických vlastností a jejich interakce se zářením.“

Selected publications since 2012:

2021

• Štefek, A., Tyč, M.: Impact of Preparation of Titanium Alloys on Their Abrasive Water Jet Machining. Materials, (doi: 10.3390/ma14247768) 2021, 14(24), 7768(1)-7768(12)
• Gembalová, L., Hlaváč, L.M., Spadło, S., Geryk, V., Oros, L.: Notes on the Abrasive Water Jet (AWJ) Machining. Materials, (doi: 10.3390/ma14227032), 2021, 14(22), 7032(1)-7032(14)
• Spadło, S., Bańkowski, D., Młynarczyk, P., Hlaváčová, I.M.: Influence of Local Temperature Changes on the Material Microstructure in Abrasive Water Jet Machining (AWJM). Materials, (doi: 10.3390/ma14185399) 2021, 14(18), 5399(1)-5399(16)
• Poláček, J., Hlaváčová, I.M., Tyč, M.: A Short Note about the Impact Action of a Water Jet Stabilized by a Coaxial Air Stream in the Air and Underwater. Materials, (doi: 10.3390/ma14175015) 2021, 14(17), 5015(1)-5015(12)
• Štefek, A., Raška, J., Hlaváč, L.M., Spadło, S.: Investigation of Significant Parameters during Abrasive Waterjet Turning. Materials, (doi: 10.3390/ma14164389) 2021, 14(16), 4389(1)-4389(15)
• Hlaváč, L.M.: Revised Model of Abrasive Water Jet Cutting for Industrial Use. Materials, (doi: 10.3390/ma14144032) 2021, 14(14), 4032(1)-4032(16)
• Hlaváč, L.M., Annoni, M.P.G., Hlaváčová, I.M., Arleo, F., Viganò, F., Štefek, A.: Abrasive Waterjet (AWJ) Forces – Potential Indicators of Machining Quality. Materials, (doi: 10.3390/ma14123309) 2021, 14(12), 3309(1)-3309(19)
• Hlaváč, L.M., Bańkowski, D., Krajcarz, D., Štefek, A., Tyč, M., Młynarczyk, P.: Abrasive Waterjet (AWJ) Forces-Indicator of Cutting System Malfunction. Materials, (doi: 10.3390/ma14071683) 2021, 14(7), 1683(1)-1683(16)

2020

• Raška, J., Hlaváč, L.M., Štefek, A. Tyč, M.: Reduction of Pollution During Composite Machining. Inzynieria Mineralna – Journal of the Polish Mineral Engineering Society, (doi: 10.29227/IM-2020-01-62) 2020, 2(1), 175-178
• Hlaváč, L.M., Štefek, A., Tyč, M., Krajcarz, D.: Influence of Material Structure on Forces Measured during Abrasive Waterjet (AWJ) Machining. Materials, (doi: 10.3390/ma13173878) 2020, 13(17), 3878(1)-3878(15)
• Hlaváčová, I.M., Sadílek, M. Váňová, P., Szumilo, Š., Tyč, M.: Influence of Steel Structure on Machinability by Abrasive Water Jet. Materials, (doi: 10.3390/ma13194424) 2020, 13(19), 4424(1)-4424(17)

2018

• Hlaváč, L.M., Hlaváčová, I.M., Plančár, Š., Krenický, T., Geryk, V.: Deformation of products cut on AWJ x-y tables and its suppression. IOP Conference Series: Materials Science and Engineering (doi: 10.1088/1757-899X/307/1/012015) 307 (1) 2018, Article number 012015.
• Hlaváč, L.M., Hlaváčová, I.M., Arleo, F., Viganò, F., Annoni, M.P.G., Geryk, V.: Shape distortion reduction method for abrasive water jet (AWJ) cutting. Precision Engineering, (doi: 10.1016/j.precisioneng.2017.05.002) 53, 2018, 194-202.

2017

• Hlaváč, L.M., Krajcarz, D., Hlaváčová, I.M., Spadło, S.: Precision comparison of analytical and statistical-regression models for AWJ cutting. Precision Engineering, (doi: 10.1016/j.precisioneng.2017.05.002) 50, 2017, 148-159.
• Hlaváč, L.M., Hlaváčová, I.M., Geryk, V.: Taper of kerfs made in rocks by abrasive water jet (AWJ). International Journal of Advanced Manufacturing Technology, (doi: 10.1007/s00170-016-8782-2) 88(1-4), 2017, 443-449.

2016

• Hlaváč, L.M., Kocich, R., Gembalová, L., Jonšta, P., Hlaváčová, I.M.: AWJ cutting of copper processed by ECAP. International Journal of Advanced Manufacturing Technology, (doi:10.1007/s00170-015-8236-2) 86(1-4), 2016, 885-894.

2015

• Hlaváč, L.M., Hlaváčová, I.M., Geryk, V., Plančár, Š.: Investigation of the taper of kerfs cut in steels by AWJ. International Journal of Advanced Manufacturing Technology, (doi:10.1007/s00170-014-6578-9) 77(9-12), 2015, 1811-1818.
• Hlaváč, L.M.: Application of water jet description on the de-scaling process. International Journal of Advanced Manufacturing Technology, (doi:10.1007/s00170-015-7020-7) 80(5-8), 2015, 721-735.
• Hlaváč, L.M., Gembalová, L., Štěpán, P., Hlaváčová, I.M.: Improvement of abrasive water jet machining accuracy for titanium and TiNb alloy. International Journal of Advanced Manufacturing Technology, (doi:10.1007/s00170-015-7132-0) 80(9-12), 2015, 1733-1740.

2014

• Gryc, R., Hlaváč, L.M., Mikoláš, M., Šancer, J., Daněk, T.: Correlation of pure and abrasive water jet cutting of rocks. International Journal of Rock Mechanics and Mining Sciences (http://dx.doi.org/10.1016/j.ijrmms.2013.11.001) 65, 2014, 149-152.

2013

• Strnadel, B., Hlaváč, L.M., Gembalová, L.: Effect of steel structure on the declination angle in AWJ cutting. International Journal of Machine Tools & Manufacture, (doi:10.1016/j.ijmachtools.2012.07.015) 64, 2013, 12-19.

2012

• Hlaváč, L.M., Strnadel, B., Kaličinský, J., Gembalová, L.: The model of product distortion in AWJ cutting. International Journal of Advanced Manufacturing Technology, (doi:10.1007/s00170-011-3788-2) 62(1-4), 2012, 157-166.

Patents:

• L. Hlaváč, R. Zapletal, V. Mádr: Device for producing and amplification of liquid flow modulation. Czech national patent No. 302595. Granted 2011.
• V. Mádr, M. Lupták, L. Hlaváč: Sensor and method of forces measurement in the process of high-velocity liquid jet cutting. Czech national patent No. 303189. Granted 2012.
• J. Poláček, L. Hlaváč: Device for pneumatic modulation of liquid flow and method of modulation of liquid flow. Czech national patent No. 303267. Granted 2012.

Contacts:

Leader of scientific group:

• prof. Ing. Libor Hlaváč, Ph.D.
  Department of Physics
  VŠB-Technical University of Ostrava
  17. listopadu 2172/15
  708 00 Ostrava-Poruba
  Česká Republika
  
  e-mail: libor.hlavac(zavinac)vsb.cz
  phone: +420 59 732 3102

Members of scientific group:

• doc. Ing. Irena Hlaváčová, Ph.D., e-mail: irena.hlavacova(zavinac)vsb.cz
• Ing. Lucie Gembalová, Ph.D., e-mail: lucie.gembalova(zavinac)vsb.cz
• RNDr. Josef Poláček, CSc., email: josef.polacek(zavinac)vsb.cz

PhD students:

• Ing. Vladan Geryk - suspension of studies
• Ing. Adam Štefek
• Ing. Martin Tyč

Bachelor and Master students:

• Bc. Jiří Kozelský
• Bc. Jakub Gřunděl
• Bc.Petr Pětroš