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Class 205/673 - Regenerating or rehabilitating, per se, of electrolyte


Subclass of Class 205 - Electrolysis: processes, compositions used therein, and methods of preparing the compositions
Definition: Process for the, per se, regeneration or cleaning of an
No. of patents: 26
Last issue date: 11/27/2007


NumberTitleIssue Date
7300575Portable filter system
A filter system for receiving an aqueous-based fluid contaminated with particles and emulsified contaminant oil, removing the particles, and separating the emulsified contaminant oil from the aqueous-based fluid includes a filter media for receiving the aqueous-base...
11/27/2007
7160431Method and device for forming a dynamic pressure-generating groove in a fluid dynamic pressure bearing
A method and apparatus for forming a fluid dynamic pressure groove in a fluid dynamic pressure bearing is provided. The method is accomplished by initially positioning and securing multiple workpieces to be machined to their respective machining devices. An electroc...
01/09/2007
7067048Method to improve the control of electro-polishing by use of a plating electrode an electrolyte bath
A method and apparatus which uses a plating electrode in an electrolyte bath. The plating electrode works to purify an electrolyte polishing solution during the electro-polishing process. Preferably, the plating electrode is employed in a closed loop feedback system...
06/27/2006
6797141Removal of coagulates from a non-glare electroplating bath
The invention deals with the technical problem to devise a process for the extended use of electrolytes which economically ensures a high electrolyte quality without having to accept production interruptions for regeneration. Especially, it is envisaged to conduct t...
09/28/2004
6676826Method for production of a rotor for centrifugal compressors
A method for production of a rotor for centrifugal compressor, wherein the said rotor is produced from a monolithic disc, which is provided with a central hole. The method consists of use, within an isolating medium, of at least one first electrode which ...
01/13/2004
6660156Pipe electropolishing apparatus using an electrolyte heater and cooler
A temperature handling subsystem (12) for a pipe electrochemical polishing system (10) has a chiller (46) and associated heat exchanger (44) for cooling the acid electrolyte (24) circulating through a pipe (28) while a cathode (14) is drawn therethrough f...
12/09/2003
6428683Feedback controlled airfoil stripping system with integrated water management and acid recycling system
The present invention relates to a feedback controlled stripping system with integrated water management and acid recycling system. The system comprises a stripping tank containing an electrolyte bath stripping solution for removing a coating from at leas...
08/06/2002
6221235Removal of sacrificial cores by electrochemical machining
A sacrificial cores in castings of metallic or non-metallic materials is made from a metal that can be electrolytically dissolved, and is removed from the casting by electrochemical machining. The sacrificial core may be a hollow shell incorporating an in...
04/24/2001
6083374Process for maintaining a constant concentration of substances in an electroplating bath
The invention relates to a method for maintaining constant concentrations of substances contained in an electrolytic treatment bath, preferably in baths with aqueous solutions. In order to regenerate the continual depletion of chemicals, substance concent...
07/04/2000
5882500Process for demetallizing highly acid baths and use of said process for electropolishing special steel surfaces
The invention relates to a process for the demetallization of highly acidic baths based on phosphoric acid and sulphuric acid, and also to a process for the electropolishing of stainless-steel surfaces, in which a regeneration of, in particular, spent ele...
03/16/1999
5783061Method of removing iron compounds and chromium compounds from an aqueous electrolytic solution as well as the use of this method in electrochemical machining
The invention relates to a method of removing iron compounds and chromium compounds from an aqueous electrolytic solution. Said method is characterized by the following succession of steps: a) adding hydrogen peroxide to the solution and, if necessary, adaptin...
07/21/1998
5714054Process for cleaning the electrolyte of an electrochemical machining process
The treatment of an electrolyte volume arriving from an electrochemical machining process and contaminated with hydroxide sludge is performed in a treatment basin (18) such that the contaminated electrolyte volume is supplied virtually horizontally to the...
02/03/1998
5543032Electroetching method and apparatus
A tool and process for electroetching metal films or layers on a substrate employs a linear electrode and a linear jet of electrolyte squirted from the electrode. The electrode is slowly scanned over the film by a drive mechanism. The current is preferabl...
08/06/1996
5380441Removal of chromium from solution using mechanically agitated iron particles
Metallic iron particles are added to an aqueous solution containing hexavalent chromium and mechanically agitated. Enough of the surface of the iron particles remains precipitate-free to reduce substantially all the hexavalent chromium to trivalent chromi...
01/10/1995
5096550Method and apparatus for spatially uniform electropolishing and electrolytic etching
In an electropolishing or electrolytic etching apparatus the anode is separated from the cathode to prevent bubble transport to the anode and to produce a uniform current distribution at the anode by means of a solid nonconducting anode-cathode barrier. T...
03/17/1992
4895627Method of electrolytic surface treatment of aluminum supports for planographic printing plates
A method of electrolytic surface treatment of aluminum supports for planographic printing plates, comprising the steps of: separating aluminum ions in an electrolyte for the surface treatment to the outside of a system using an ion-exchange membrane, and ...
01/23/1990
4880509Electrolytic finishing method and apparatus
An electrode is positioned to form a predetermined gap between the electrode and a surface of a work, and the electrode and the work are submerged in an electrolyte. Pulses are applied to the electrode to machine the work. The electric energy of the pulse...
11/14/1989
4749455Method of treating contaminated aqueous phosphoric acid solutions
Phosphoric acid solution used in the decontamination of radioactive metal articles is reacted with oxalic acid to precipitate the iron oxalate which is then pyrolyzed to form a mixture of oxides in small volume for storage as a radioactive waste. The solu...
06/07/1988
4746413Process for regenerating and detoxifying electrolytes used in the electrochemical treatment of metal
The invention comprises a process for regenerating and detoxifying electrolytes which contain sodium nitrate for use in electrochemical treatment of metallic workpieces. The reaction products, like ammonia, formed in the treatment which interfere with the...
05/24/1988
4737250Process for regenerating electrolytes
The invention refers to a process for regenerating electrolytes containing sodium nitrate for use in the electrochemical working of metallic workpieces within the pH range from 4 to 12. Iron (III) nitrate is added to the electrolyte in the working cycle in suc...
04/12/1988
4676833Method for reproducing composition of electrolytic polishing solution for niobium material
A method of reproducing a composition of an electrolytic polishing solution for a niobium material, characterized in that, when the composition of the electrolytic polishing solution for the niobium material which is composed of HF, H2 SO4...
06/30/1987
4537666Decontamination using electrolysis
Disclosed is a method of decontaminating metal surfaces having a radioactive coating thereon where the coating contains metal ions. An aqueous decontamination solution containing at least one chelate is passed over the coating to solubilize the metals. Th...
08/27/1985
4504370Method and apparatus for electrochemical machining
The disclosure relates to a process and apparatus for the treatment of sodium-nitrate-containing electrolytes during the electrochemical machining of the surfaces of iron-containing workpieces. By adding an oxidizing agent, more particularly ozone, increa...
03/12/1985
4269678Method for regenerating a cupric chloride and/or ferric chloride containing etching solution in an electrolysis cell
Method and apparatus for regenerating etching solutions obtained by chemily processing metallic surfaces, which solutions contain cupric chloride and/or ferric chloride. The apparatus includes between the anode and the cathode a diaphragm or an ion excha...
05/26/1981
4193853Decontaminating metal surfaces
This invention relates to an electrolyte and an electrolytic method for removing radioactive contaminants from the surface of a metallic substrate....
03/18/1980
4040920Method of preventing pollution of sludge formed by electrolytic etching work
An electrolytic solution containing chromium (VI) compound is admixed with an aqueous solution of ferrous nitrate or ferrous chloride and pH of the mixture is adjusted to 8 to 8.5 with an aqueous solution of sodium hydroxide and the sludge containing chro...
08/09/1977
 
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