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Medical breathing devices are in most cases a chain of fine mechanical components, combined with filters and miniature valves. The emergency care breathing devices that Dräger Medical b.v. produces are always used under extreme conditions, like heavy shock (in action) and vibration (helicopters and ambulances). In these operating conditions it has to be assumed that any burrs are certain to break loose and enter the system of critical components as contaminating particles.

TEM involves the ignition of a mixture of natural gas and oxygen, under pressure, surrounding the components. The resultant heat wave (too small to effect the components) has the ability to vaporize burrs, as their large surface to mass ratio cannot dissipate the heat quick enough to avoid their temperature surpassing their ignition point. The ‘burn’ combines with the excess oxygen to produce an oxide powder which is easily washed off.

www.deburr.co.uk