High velocity particulate containing fluid jet process

Details High velocity particulate containing fluid jet process High velocity particulate containing fluid jet process

1984-01-24

1985-12-03

Schmidt, Frederick R.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

51319, 51320, 51321, B24C 504

Patent

active

045558728

ABSTRACT:
Process for introducing solid particles into fluid streams under accurate control. Several embodiments of nozzle apparatus are disclosed utilizing a central fluid orifice or orifices and peripheral solids orifices for mixing the solids into the fluid stream. When multiple fluid orifices are utilized, an area of lower pressure is formed in the central portion of the combined fluid stream thereby aiding in the mixture of the solids into the fluid stream. A flow shaping nozzle is provided at the exit of the apparatus to increase the mixing of the solids within the fluid jets stream. The flow shaping nozzle may have both axial and radial freedom of movement for forming the fluid-solids stream and self-alignment, respectively. The process of this invention, in one preferred embodiment, involves introduction of the solids in the form of a foam into the fluid jet stream. The process of this invention is particularly well suited for abrasive uses of cutting hard materials such as reinforced concrete and steel, as well as utilization with a peripheral air shroud for underwater purposes.

REFERENCES:
patent: 1472015 (1923-10-01), Coburn
patent: 1559969 (1925-11-01), Mauterer
patent: 2503743 (1950-04-01), Keefer
patent: 2508766 (1950-05-01), Morel
patent: 4449332 (1984-05-01), Griffiths

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