Abstract:
This paper presents a literature review done on Cryogenic cooling, Liquid Nitrogen Cooling(LNC), and
'Chilled Air and Minimum Quantity Lubrication' (CAMQL) cooling methods used in machining operations,
targeting to recognise better cooling methods for the Sri Lankan die and mould making sector (SLDMMS). The
state of the art in cryogenic machining was searched and reviewed first, and then its benefits, limitations, and
applications were studied. Alternative cooling methods for conventional emulsion cooling were searched. The
benefits from cryogenic cooling and other alternative methods were analysed and compared. LNC and
CAMQL cooling were chosen as subjects for further comparative study. A substantial amount of literature was
found on the effect of these cooling methods on hard-to-cut materials such as lnconel, Titanium alloys etc., but
very few or no studies had been carried out on materials used in the Sri Lankan die and mould making sector.
A survey on materials used in SLDMMS is recommended to identify the most commonly used material types.
An economic feasibility study of cryogenic cooling and chilled air cooling is recommended.
