LINSPRAY® carbon dioxide (CO2) cooling solutions avoid the problem of overheating by effectively cooling the work piece around the flame. CO2 is fed from a pressure vessel at a low (18 bar) or high pressure (56 bar). Normally, a tank is used to supply these cooling applications, but small-volume or occasional users may find cylinder bundles (56 bar) adequate.
Our CO2 thermal spraying cooling solutions are an ideal application to support the thermal spraying processes on temperature-sensitive substrate materials such as Carbon Fibre Re-enforced Plastic (CFRP), Titanium, Aluminium and Magnesium, thin-walled components, components with poor thermal conductivity, oxide-sensitive spray materials and products with different heat expansion rates.
Compared with other cooling methods using air or nitrogen, CO2 is a highly effective cooling medium. Although nitrogen has an extremely low temperature (–195°C), this cooling power cannot be applied effectively as there is no direct contact between the liquid nitrogen and the component to be cooled.
BOC CO2 snow particles are propelled directly onto the surface, thus penetrating the insulation layer. On contact with the surface, the CO2 snow sublimates (i.e. changes from a solid to a gas state), thus releasing maximum cooling power.
The speed and performance benefits of CO2 snow open up new applications for thermal spraying. To maximise the efficiency and performance gains of CO2 cooling, we complement our gas and service offering with custom-developed hardware and nozzles. These sophisticated, commercially viable devices bring our customers the added bonus of ease of use.