Experimental study on the cooling effects of cryogenic pneumatic mist jet impinging cooling method
by Q.L. An, Y.C. Fu, J.H. Xu
International Journal of Abrasive Technology (IJAT), Vol. 1, No. 3/4, 2008

Abstract: Grinding, characterised by its high specific energy consumption, may generate high grinding zone temperature. These can cause thermal damage to the ground surface and poor surface integrity, especially in the grinding of difficult-to-machine materials. Conventional cooling methods based on large amounts of water-oil emulsions can be both ineffective and environmentally unacceptable. Here a new high efficiency cooling technology – Cryogenic Pneumatic Mist Jet Impinging (CPMJI) cooling technology is offered. It utilises the high penetrative power of fast cryogenic air jet combined with a little quantity of water of 0°C to greatly improve heat transfer effects in the machining zone. Experimental results, including heat transfer experiments and grinding experiments, indicate that CPMJI has strong cooling ability and can offer better cooling effects compared to cold air jet and traditional flood cooling method in the grinding of titanium alloy.

Online publication date: Tue, 30-Sep-2008

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