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http://yadda.icm.edu.pl:80/baztech/element/bwmeta1.element.baztech-article-BPZ1-0063-0047

Czasopismo

Archives of Foundry Engineering

Tytuł artykułu

Modern precise high-power water-cooling systems for press quenching

Autorzy Plata, M.  Piwnik, J.  Patejuk, A. 
Treść / Zawartość http://www.afe.polsl.pl/index.php/pl/magazine/cat/1/archives-of-foundry-engineering http://journals.pan.pl/dlibra/journal/96939
Warianty tytułu
Języki publikacji EN
Abstrakty
EN Demand for extrusions in transport applications is increasing rapidly. The extrusions must be strong, light, crashworthy and may have to undergo hydrofonning. This implies low wall thicknesses [...] in strong alloys that need very fast quenching to obtain the required T4 temper. Crashworthiness - the ability to absorb a lot of energy in crushing deformation - demands very unifoml properties throughout the section, and so does hydroforming. Various systems of water or air/water jets, with and without scanning, with and without arrangements for precisely aiming the jets, have proved effective for less difficult alloys in wall thicknesses down to 3 mm. These are unsuitable for the new types of transport extrusions, either inducing physical distortion or non-uniform mechanical properties. A novel cooling system that satisfies the new requirements uses laminar water jets of 50-250 [...] diameter in a densely packed array of up to 10/cm2. These are arranged in modules whose position and direction of aim can be adjusted relative to the part of the extrusion they cool, assuring linear cooling of all parts of the section at up to 500 K/s. The array of modules is very compact and not expensive. A sophisticated system of water microfiltration ensures that the fine nozzles do not become blocked.
Słowa kluczowe
PL faza międzymetaliczna   Fe-Al   prasa hartownicza  
EN intermetalic type Fe-Al   press quenching  
Wydawca Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
Czasopismo Archives of Foundry Engineering
Rocznik 2009
Tom Vol. 9, iss. 2
Strony 205--210
Opis fizyczny Bibliogr. 15 poz., rys., wykr.
Twórcy
autor Plata, M.
autor Piwnik, J.
autor Patejuk, A.
  • The Alcan Technology and Management Ltd., Technology Center Neuhausen, Switzerland
Bibliografia
[1] J. Piwnik, A. Patejuk: Theory of the axi-symmetric extrusion process of multi-layer materials with a strong plastic nonhomogeneity. Archives of Foundry Engineering. Vol. 8 (2008), 285-290.
[2] D. Milkiewicz, M. Plata, J. Milkiewicz, J. Piwnik: A simple model of a microjet for high-precision liquid cooling systems. Heat Transfer and Renewable Sources of Energy (2008), 355-362.
[3] M. Plata, J. Piwnik: Modern precise high-power water-cooling systems. International Heat Transfer and Renewable Energy Conference (2006), 551-559.
[4] D. Milkiewicz, J. Milkiewicz: Analytical model of single microjet cooling of electronic equipment accepted for presentation at. International Conference of Nanochannels, Microchannels and Minichannels, Darmstadt, 22-26 June 2008.
[5] D.Milkiewicz, J. Milkiewicz: Surface cooling by means of axially symmetrical liquid jets. Gdańsk University of Technology Publishers, Gdańsk 2005.
[6] M. Cholewa, M. Dziuba-Kaluza: Closed aluminium skeleton casting. Archives of Foundry Engineering. Vol. 8 (2008), 53-56.
[7] J. Danko, R. Danko, J. Stojek: Cognisable effects of model investigations of die casting processes. Archives of Foundry Engineering. Vol. 8 (2008), 57-62.
[8] A. Dudek, Z. Balaga: Characteristics of microstructure and phase in art. Castings. Archives of Foundry Engineering. Vol. 8 (2008), 71-74.
[9] K. Grant, D. Nowak, M. Pigiel, M. Stachowicz, R. Wikiera: The influence of microwave heating and water Glass kind on the properties of molding sands. Archives of Foundry Engineering. Vol. 8 (2008), 119-122.
[10] M. Kaczorowski, A. Krzynska: The structure and mechanical properties of heat treated Al.-Zn-Cu-Mg type alloy. Archives of Foundry Engineering. Vol. 8 (2008), 163-168.
[11] E. Majchrzak, B. Mochnacki, J. S. Suchy: Estimation of boundary heat flux between casting and mould using the global function specification method. Archives of Foundry Engineering. Vol. 8 (2008), 193-198.
[12] J. Mendakiewicz: Application of identification methods in solidification process modelling. Archives of Foundry Engineering, Vol. 8 (2008), 203-210.
[13] M. Nadolski, Z. Konopka, M. Legiewska, A. Zyska: The influence of aluminosilicate fibre in moulding material for investment casting technology on its mechanical properties. Archives of Foundry Engineering. Vol. 8 (2008), 223-226.
[14] A. Patejuk, J. Piwnik, M. Gabrylewski: Modeling the process of composition of plastic grains. Archives of Foundry Engineering, Vol. 8 (2008), 249-254.
[15] M. Perzyk, A. Soroczyński, R. Biernacki: Possibilities of decision trees applications for improvement of quality and economics of foundry production. Archives of Foundry Engineering, Vol. 8 (2008), 261-268.
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