Patent ID: 8689727

Claim:
An anti-oxidation spraying equipment for a billet comprising: a plurality of spraying devices mounted adjacent a spraying region, the spraying devices to provide an anti-oxidation spray on the billet when the billet enters the spraying region to form an anti-oxidation coating on the billet, the anti-oxidation spray composed of a liquid-gas, two-phase mixture, the billet having a temperature between approximately 400° C. and approximately 1000° C. when the billet enters the spraying region; a first spraying device of the plurality of spraying devices to move in a first direction relative to the billet; a second spraying device of the plurality of spraying devices to move in a second direction relative to the billet; a third spraying device of the plurality of spraying devices to move in a third direction relative to the billet, the first direction being different than the second and third directions, and one of the first, second or third spraying devices being movable independently relative to another one of the first, second or third spraying devices; and a position adjustor to adjust respective positions of the first, second and third spraying devices relative to respective surfaces of the billet based on a size of the billet and the composition of the liquid-gas, anti-oxidation spray, the position adjustor to control respective spray distances between the respective spraying devices and respective surfaces of the billet to enable a uniform formation of the anti-oxidation coating on the surfaces of the billet to prevent gasification of the anti-oxidation spray and to prevent the anti-oxidation spray from flowing on the surface of the billet and causing a non-uniform anti-oxidation coating.