Class 29/81.08 - Liquid jet

Subclass of Class 29 - Metal working
Definition: Process or apparatus wherein the fluid is in liquid form.
No. of patents: 29
Last issue date: 06/14/2011

Number	Title	Issue Date
7958609	Hydraulic device which is used to descale warm rolling products An apparatus for descaling hot rolled stock (17), being moved with respect to the apparatus, by spraying it with high pressure water, comprising at least one row of nozzle heads sweeping across the width of the rolled stock with a plurality of nozzle heads (	06/14/2011
7181943	Descaling method for strip-rolling mill Strip is descaled in a rolling line having a scale scrubber and a finishing line downstream of the scale scrubber. The strip is sprayed with water on its upper and under sides at a descaling pressure in the scale scrubber. In the scrubber the strip is treated with w...	02/27/2007
6890665	Martensitic stainless steel and method for manufacturing the same Martensitic stainless steel whose steel composition is restricted within a specific range for each element is provided. The scale layer formed on the surface of the base material consists of an inner layer scale mainly including FeCr2O4 and an ...	05/10/2005
6865807	Cylinder block production method A cylinder block production method is characterized by having, as a step prior to a cast-enclosing step of cast-enclosing a cast iron-made cylinder liner within a cylinder block body, an erosion-wash step of washing an outer peripheral wall surface of the cylinder l...	03/15/2005
6701593	Process for producing inkjet printhead An ink cartridge having a piezoelectric jet module has an ink storage module having a hollow ink storage region, a piezoelectric jet module having a plurality of ink chambers and a connection circuit, and an ink channel connected to the ink storage module...	03/09/2004
6389666	Method of and apparatus for descaling of surfaces having oscillation marks of cast billets produced by a continuous casting machine A method of descaling surfaces having oscillation marks of cast billets produced by a continuous casting process an reduced in a hot strip train including an equalizing furnace and a plurality of rolling mill stands, with the cast billets being delivered ...	05/21/2002
6385832	Descaling device for a continuous cast metal strip A descaling device for hydromechanically descaling metal strip has a descaling spray arrangement with first and second spray nozzles arranged adjacent to one another in first and second spray nozzle rows transverse to the transport direction with several ...	05/14/2002
6119323	Apparatus for the descaling of rolled metal stock Structural shapes are descaled with water or air jets from a distributor beam in the form of a tube bundle extending across the path of the structural shape and rotatable to juxtapose a selected nozzle array with the structural shape. The nozzle arrays on...	09/19/2000
5996200	Descaling device and method A descaling device for slabs or strips in hot rolling mills includes nozzles fed by a pressurized water piston pump for directing water jets against the slab or strip for removing scale adhering to the surface of the slab or strip. At least one additional...	12/07/1999
5970594	Method to roll strip and plate and rolling line which performs such method Method and line to roll strip and plate starting from thin slabs produced by continuous casting, whereby the cast product is subjected to at least one descaling operation followed by a roughing operation and by a finishing operation before being wound in ...	10/26/1999
5675880	Descaling system for use in the manufacture of steel and corresponding method This invention relates to a descaling system for use in the manufacture of steel and corresponding method, including a pump recirculation system. The recirculation system is adapted to make high pressure descaling fluid (e.g. water) instantaneously availa...	10/14/1997
5661884	Offset high-pressure water descaling system The present invention provides a descaling system for hot strip or plate mills. The descaling system includes upper and lower spray headers which are offset from each other along the pass line. Each spray header is adapted to direct a high-pressure water ...	09/02/1997
5640747	Curtain apparatus A curtain apparatus having a hood with a top plate in which one or more slots and/or openings are positioned, such as approximately parallel to each other. A fixed woven mesh metal curtain is mounted within one slot or opening so that the fixed woven mesh...	06/24/1997
5554235	Method of and process for cold-rolling of stainless-steel and titanium-alloy strip A method and process line for producing cold-rolled stainless-steel or titanium-alloy strip from hot-rolled strip descales the hot-rolled strip by shot-blasting and/or brush-polishing and then cold-rolls the descaled strip. The cold-rolled strip, at its f...	09/10/1996
5531882	Procedure for cleaning the anodes of electrolytic tanks A procedure and machine for cleaning the anodes of electrolytic tanks, said procedure comprising the operations of mechanically breaking the deposits on the surfaces of the anodes, detaching and separating the deposits, once broken, and then subjecting th...	07/02/1996
5502881	Apparatus for descaling substantially flat surfaces of hot rolled stock Apparatus for removing surface layers from workpieces, especially for descaling hot rolled stock moved with respect to the apparatus, by spraying highly pressurized fluid, especially pressurized water on both sides of the rolled stock from rows of nozzles...	04/02/1996
5461763	Curtain apparatus A curtain apparatus having a hood with a top plate in which a plurality of slots are positioned approximately parallel to each other. A fixed woven mesh metal curtain is mounted within one slot so that the fixed woven mesh metal curtain remains in a fixed...	10/31/1995
5357664	Curtain apparatus A curtain apparatus having a hood with a top plate in which a plurality of slots are positioned approximately parallel to each other. A fixed woven mesh metal curtain is mounted within one slot so that the fixed woven mesh metal curtain remains in a fixed...	10/25/1994
5272798	Method and apparatus for descaling metal strip A system for descaling a strip of metal includes a nozzle assembly mounted within a spray box for spraying descaling product on the strip. The nozzle assembly includes a spray chamber; nozzles mounted directly to the spray chamber; and a heater for heatin...	12/28/1993
5219114	Continuous hot strip rolling system and method thereof In a continuous hot strip rolling system in which bars are joined between a roughing train and a finishing train for continuous rolling, the roughing train includes two two-high twin-roll arranged stands each having two pairs of work rolls. The four two-h...	06/15/1993
5036689	Descaling rolled material When a strip of e.g. hot steel is rolled by a rolling or roughing mill, scale develops on the surface of the strip which must be removed. The strip is passed over a bending roller which bends the strip and causes cracks in the scale. Then water is injecte...	08/06/1991
4793168	Method of and apparatus for effecting a thickness-reduction rolling of a hot thin plate material An apparatus for effecting a thickness-reduction rolling of a hot thin plate ingot provided with a continuous casting machine and a rolling mill has a widthwise rolling mill disposed between the continuous casting machine and the rolling mill for performi...	12/27/1988
4623561	Method of marking a hot steel slab A method of applying a visible mark on a hot steel slab is described. The adherence of the marking composition to the slab surface can be improved by removing locally iron oxide therefrom, followed by the step of locally cooling down the surface to preven...	11/18/1986
4599967	Vessel nozzle cleaning apparatus and methods The invention provides an arrangement for cleaning or deskulling the downwardly protruding nozzle of a vacuum degassing vessel comprising a rotatable tool carrier capable of being positioned below the degassing vessel; one or more scraping tools mounted o...	07/15/1986
4584746	Device for detecting cracks in steel slabs leaving continuous casting A device for detecting cracks in steel slabs leaving continuous casting, which comprises two crack detecting units placed on either side of the passage of a slab leaving continuous casting and two descaling and cooling units located upstream of the detect...	04/29/1986
4497664	Erosion of a solid surface with a cavitating liquid jet A solid surface is eroded by directing a liquid axially through a converging passage in a nozzle toward the surface, then deflecting the liquid in a lateral direction parallel to the surface while the liquid is subject to cavitation....	02/05/1985
4269052	Mechanical descaling device A device for blasting descaling slurry jets against the surfaces of sheet metal is disclosed, thereby descaling the same prior to cold rolling....	05/26/1981
4233830	Method for the continuous production of a bright copper rod by the rolling of stock obtained from a continuous casting apparatus A method and apparatus for the continuous production of bright copper rod from stock discharged from a continuous casting machine in which an oxide layer formed on the stock during its passage from the continuous casting machine in the atmosphere is subje...	11/18/1980
4070884	Process and device for de-scaling elongated metallic bars during continuous forming A device and a process for continuous de-scaling of elongated metallic material, particularly steel. The material has front, center and end sections, and the process includes the steps of continuously moving the material in one direction, and shaping, par...	01/31/1978

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Class 29/81.08 - Liquid jet