Patent ID: 6386949
Filing Date: 2002-05-14
Classification: B24C

Abstract:
A cleansing and/or scraping method comprising steps of:blasting fluid into a mixer at a high speed; supplying gas, including at least pressurized gas, and powder to a flow of said fluid to thereby form a mixture flow composed of said gas, fluid like droplets and said powder, wherein said pressurized gas is supplied to a mixing space in the mixer and is mixed with the fluid while said pressurized gas suddenly expands in the mixer; and blasting said mixture flow from a nozzle at a high speed to thereby spray said mixture flow onto a surface to be treated, so that impact actions held by said powder and said droplet-like fluid as cleansing and/or scraping media are given to said surface to be treated so as to carry out a cleansing and/or scraping operation.