Water mist effect on heat transfer coefficient in cooling of casting die

• Autorzy: Władysiak R.
• Języki publikacji: EN

Abstrakty

EN

This project is showing investigation results of heat transfer process between cast iron die and environment during cooling of die in thetemperature range 600÷100 oC with compressed air, spray water and water mist streamed under pressure 0.35÷0.45 MPa in air jet 0.3÷0.4 MPa. At the paper are shown results of cooling die�fs flat wall using open cooling system. The temperature gradient was presented at die�fs wall thickness and calculated thermal curve for cooling surface. The calculation results of heat transfer coefficient alpha were presented between die and researched cooling factors and also mathematical models of alpha coefficient depending on surface temperature. Revealed that coefficient alpha has the biggest value's range for die cooling with water mist under pressure 0.3/0.35 MPa.

Słowa kluczowe

EN

innovative casting technologies; innovative materials; heat transfer coefficient; cooling; water mist

PL

innowacyjne technologie odlewnicze; współczynnik wymiany ciepła; chłodzenie; mgła wodna

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2008
• Tom: Vol. 8, iss. 3
• Strony: 227--236
• Opis fizyczny: Bibliogr. 8 poz., rys., wykr.

Twórcy

autor

Władysiak R.

• Department of Materials Engineering and Production Systems, Technical University of Łódź Stefanowskiego 1/15 Street, 90-924 Łódź,

Bibliografia

• [1] Z. Górny: Odlewanie kokilowe stopów metali nieżelaznych. WNT, Warszawa, 1975.
• [2] M. Venkataramana, V. Vasudeva Rao, R .Ramgopal Varma, S. Sunderrajan: Instrumentation to measure heat transfer coefficient at the metal mold interface, Jol Instrument. Society of India 37, 2003, p.157-163.
• [3] A. Hamasaiid, M. S. Dargusch, C. J. Davidson, S. Tovar, T. Loulou, F. Rezai-Aria, G. Dour: Effect of mold coating materials and thickness on heat transfer in permanent mold casting of aluminum alloys. Metallurgical and Materials Transactions A, Volume 38a, June 2007, p.1303-1316.
• [4] G. Dour, M. Dargusch, C. Davidson, A. Nef: Development of a Non-intrusive Heat Transfer Coefficient Gauge and its Application to High Pressure Die Casting Effect of the Process Parameters, Journal of Materials Processing Technology 169, 2005, 223-233.
• [5] L. Lin, R. Ponnappan: Heat transfer characteristics of spray cooling in a closed loop. International Journal of Heat and Mass Transfer 46, 2003, 3737-3746.
• [6] R. Władysiak: Zastosowanie mgły wodnej w procesie odlewania kół samochodowych, Archiwum Odlewnictwa nr 22, 2006, 552-561.
• [7] R. Władysiak: Intensyfikacja procesu odlewania kokilowego kół samochodowych - Conference proceedings "Polish Metallurgy in Years 2002-2006", Comitee of Metallurgy, 2006, 359-366.
• [8] R. Władysiak: Assessment of Effectiveness of Water Mist Cooling of Casting Die, Archives of Foundry Engineering, 2007, Vol. 7, issue 4/2007, p.175-182.