EP0852629A1 - Device for cleaning metal surfaces after they have been worked at high temperatures - Google Patents
Device for cleaning metal surfaces after they have been worked at high temperaturesInfo
- Publication number
- EP0852629A1 EP0852629A1 EP96930346A EP96930346A EP0852629A1 EP 0852629 A1 EP0852629 A1 EP 0852629A1 EP 96930346 A EP96930346 A EP 96930346A EP 96930346 A EP96930346 A EP 96930346A EP 0852629 A1 EP0852629 A1 EP 0852629A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrode
- beak
- plug
- insulating material
- fabric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002184 metal Substances 0.000 title claims abstract description 65
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 65
- 238000004140 cleaning Methods 0.000 title claims abstract description 34
- 239000011810 insulating material Substances 0.000 claims abstract description 49
- 239000004744 fabric Substances 0.000 claims abstract description 38
- 239000002253 acid Substances 0.000 claims abstract description 24
- 239000004696 Poly ether ether ketone Substances 0.000 claims abstract description 20
- 229920002530 polyetherether ketone Polymers 0.000 claims abstract description 20
- 230000009471 action Effects 0.000 claims abstract description 10
- 239000007789 gas Substances 0.000 claims abstract description 10
- 210000003323 beak Anatomy 0.000 claims description 72
- 239000003929 acidic solution Substances 0.000 claims description 44
- 150000002739 metals Chemical class 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 13
- 239000000243 solution Substances 0.000 claims description 13
- 239000004809 Teflon Substances 0.000 claims description 8
- 229920006362 Teflon® Polymers 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000007769 metal material Substances 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000005406 washing Methods 0.000 abstract description 2
- 239000012141 concentrate Substances 0.000 abstract 1
- 239000002759 woven fabric Substances 0.000 abstract 1
- 239000004020 conductor Substances 0.000 description 6
- 239000003365 glass fiber Substances 0.000 description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- SMWDFEZZVXVKRB-UHFFFAOYSA-N Quinoline Chemical compound N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 description 4
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 101100400378 Mus musculus Marveld2 gene Proteins 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000000930 thermomechanical effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F7/00—Constructional parts, or assemblies thereof, of cells for electrolytic removal of material from objects; Servicing or operating
Definitions
- the invention relates to a device for cleaning metals after they have been processed at high temperatures, ie a device with which the oxidations, stains or other phenomena, the processing at high temperatures such as welding and laser or plasma ⁇ cause metal cutting on the surface can be eliminated.
- the current state of the art knows a device which consists of a plug made of glass fiber fabric which is wound around the end of a beak-shaped electrode.
- This stopper is impregnated with an acidic solution based on phosphoric acid (81 percent by weight) and quinoline (0.01 percent by weight) and water and then attached near the surface to be processed.
- the activity of the user is often disturbed by technical disadvantages resulting from frequent maintenance and frequent replacement of the insulating material made of glass fiber, since it burns or burns due to the high heat generation to which it is exposed because large amounts of dirt accumulate in the tissue, which prevent the development of suitable electrical conditions, and because these plugs are frequent must be soaked with the acidic solution. If the device is not soaked sufficiently often, this leads to mechanical damage to the tissue and to a reduction in the electrolytic action. In addition, the dissolved residues remain so firmly on the treated surface that it has to be washed several times before it can be finally dried.
- the acidic solution has a very high density, which is also necessary so that it does not drip onto the operator or run down the wall when it is applied to vertical surfaces to be treated or to surfaces on the underside.
- it is not very practical for the operator if he has a container with acidic solution and a large amount of glass fiber insulating fabric with which he has to wrap the electrode beak, so that the work is not continuous and therefore not very productive and sometimes dangerous.
- the current state of the art also includes devices for cleaning metals with low-viscosity acidic solutions - based on citric acid - which are constantly fed to the plug by means of an electric submersible pump installed in the acid tank.
- the above-mentioned device was never used industrially on a large scale.
- the electrode through which the current flows and is surrounded by the plug heats up, as it is not only a good electrical conductor, but also a good heat conductor:
- the temperature rise that can be recorded in this way as a result of the heat accumulated by the plug leads to rapid evaporation of the aforementioned acidic solution, so that undesired combustion of this plug can also occur, which in turn creates a short circuit between the electrode and the surface to be cleaned.
- the plug must therefore be replaced relatively frequently.
- This prior art can be improved in several ways in order to eliminate the above-mentioned disadvantages and to make the device safer and more user-friendly and to achieve a longer service life for the plug.
- the above-mentioned technical problem is solved by using the following device: Vor ⁇ direction for cleaning metals with a plug of insulating material, which is placed between the electrode and the metal to be cleaned, an alternating current source with low voltage, which is connected to the Another electrode is connected to the metal, with an acidic solution with which the stopper is soaked, wherein the stopper consists of a tubular stocking or an insulating fabric tape with a thickness of more than 1 mm, characterized in that the material for Isolation of the electrode was improved; the stopper is made of polyetheretherketone fabric (trade name PEEK from Hoechst), and with it the metal end of the beak-shaped elec- trode wrapped.
- PEEK polyetheretherketone fabric
- the aforementioned polyetheretherketone fabric can also be used in the form of a felt.
- the above-mentioned fabric made of polyetherether ketone can also be used in the form of a net which is coated with a felt layer made of any heat-resistant insulating material, which layer can be applied subsequently or provided directly during manufacture.
- the above-mentioned fabric made of polyetheretherketone can be coated with a layer of felt, whereby this felt can also consist of polyetheretherketone.
- the mentioned layer of felt is applied to the outside of the fabric layer made of polyether ether ketone on the beak.
- a device for cleaning metals with a plug made of insulating material which is inserted between the electrode and the metal to be cleaned, an alternating current source with low voltage, which is connected to the metal with the other electrode, an acidic solution with which the plug is impregnated, the plug consisting of a tubular stocking or an insulating fabric tape with a thickness of more than 1 mm, characterized in that a circle is present, which is marked by means of a manually or electrically operated pump ensures the supply of acidic solution by blowing air into the area of the acid tank above the acid level, the line for supplying the plug being equipped with a shut-off valve.
- an acid supply circuit in which the highly dense and highly aggressive acid is sucked in by means of a hand pump or in some other way from the acid tank, which consists of insulating material or is isolated from the environment.
- a metal beak - hollow or with an axial bore - is provided inside the plug, through which the acid is conveyed and which is mounted on the end of the electrode.
- the above-mentioned beak is surrounded with fabric made of insulating material, which is turned over so that two parts are created and which is fastened or held with a ring made of elastic, insulating or shrinkage-hardening material; this elastic or insulating ring can be reused several times after the plug from the folded-over tissue has been replaced.
- the above-mentioned beak can consist of a metal body and an exchangeable end made of insulating material, inside of which there is at least one metal body which ends at the end face of the beak and activates the electrolytic action.
- the named exchangeable end of the beak made of metal material is coated on the side walls with insulating material, so that in the contact area with the beak body and on the non-insulated end surface, electrical tric patency is given. This end face is provided with holes through which the acidic solution is passed.
- the mentioned insulating coating consists of a Teflon film with a thickness of 0.1-0.3 mm for protection against short circuits and 0.6-1.2 mm for thermal insulation.
- high-strength stainless steel can be selected as the material for the beak, i.e. for both the body and the replaceable metal end.
- the steel grade AISI 316 should preferably be used as the high-strength stainless steel for the exchangeable metal end.
- the acid is supplied directly by the operator and as often as this is necessary; A very aggressive solution can also be used, with the loss of time for impregnating the plug and no more acid being lost during transport from the container to the processing point.
- the plug is soaked better with acid and thus heats up less or wears less as a result of thermomechanical stress.
- the beak of the electrode can have a wide variety of shapes, depending on the respective processing position; If the beak is designed in the shape of a pin, the stocking can be changed more quickly.
- the supply of the acidic solution inside the plug avoids that acid is spilled or reaches parts that cannot be cleaned. Due to the less concentrated acid, its higher thinness and the better suitability for removing treatment residues with a simple washing process, the treatment is more efficient and can be used for large-scale productions. th technology.
- the service life of the stocking is due to the fact that the electrode end is made of insulating material or, if it is made of metal, that it is coated with a thick layer of insulating material, compared to the short one
- the service life of an electrode made entirely of metal is significantly improved.
- a maximum service life can be achieved by using a double-layer plug, which has a fabric layer on the inside and a felt layer on the outside:
- the fabric on the inside can be polyetheretherketone. With the polyetheretherketone fabric, the highest service life values can be achieved, since it has a very high resistance to heat and acids.
- the outer felt layer made of any suitable material, such as the aforementioned glass fiber, holds the solution at the cleaning point and enables it to be adapted to the shape of the workpiece, which greatly increases the service life of the stocking.
- a double polyether ether ketone layer i.e. for both the fabric and the felt, maximum performance can be achieved in terms of service life, work precision and quantity.
- the fact that the beak end is exchangeable enables the beak body to be made of ordinary stainless steel, whereas the end can be made of special stainless steel, which is more expensive but wears less quickly . This results in an improvement in the efficiency of the cleaning process.
- FIG. 1 is an overall view of the device with acid supply and stocking made of insulating material fabric according to the invention.
- Figure 2 is an enlarged view of the beak of the plug wrapped with the stocking.
- Figure 3 shows the hydraulic diagram of the pump that draws in the acidic solution.
- Figure 4 is the hydraulic / pneumatic scheme of the pump, which blows the air into the acid tank, whereby the acidic solution is discharged.
- Figure 5 shows the section through a beak with a frustoconical metal insert and stocking made of improved insulating material.
- Figure 6 is the section VI-VI through the frustoconical insert.
- Figure 7 shows the scheme of the suction of the gases and vapors that are formed by the heating of the acidic solution, and their Ausbib ⁇ ment in the wet process respective working position enabled.
- the improved beak is shown, which is wrapped with the stocking made of insulating material.
- Figure 10 is a rear outline view of the improved beak showing the lines running inside.
- Figure 11 is an outline view of the front of this beak.
- Figures 12 and 13 show the views of two beaks, which are designed for the treatment of hard-to-reach places.
- Figure 14 is the view of a beak with a brush made of insulating material for treating hard-to-reach places.
- Figure 15 is an outline view of the electrode, the end of which is insulated in accordance with the invention.
- Figure 16 is the enlarged section through a longitudinal plane of the beak of the electrode.
- Figure 17 is a view of a beak with an insulating brush used to treat hard-to-reach areas.
- Figure 18 shows the section FF through the enlarged Figure 17 limited to two of the thread-like tubes.
- Figure 19 is an outline view of a plug made from a double layer of special material used to wrap the beak.
- Figure 20 shows the end of the beak with the double layer wrapped around the plug.
- Figure 21 is an outline view of a replaceable end metal beak attached to the body by screws and covered with a thick layer of insulation.
- Figure 1 the electrical supply device, consisting of a transformer 2 for converting mains voltage to low voltage, a selector switch / on switch 3 for regulating the output voltage, two terminals 4 for the conductors 5 and 6, of which one is attached to the body 7 of the surface 8 to be treated by means of pliers 9 and the other to the body 10 of the electrode which ends with the beak 11, which in turn is surrounded by the stocking 12, which is secured by the clamp 13 is held, is connected; at 14 a small pipe for supplying the acidic solution inside or outside the insulating handle 15, the acidic solution being sucked by means of a pump 16 from the tank 17, which contains the acidic solution 18 and is isolated from the rest of the device; at 19 the tank cap with ventilation; with 20, Fig.
- the piece of the stocking made of insulating material fabric with which the beak 11 and the end of the body 10 of the electrode are wrapped; at 21 the stocking bent over at the tip of the beak and held by the clamp 13; with 22 a pump that compresses the air in the tank 23 and
- Hose for the suction of said gases or vapors which is connected to a centrifugal fan 40, which directs the gases into a suitable moist filter 41, whereupon the gases emerge from the opening 42 in a purified state; with 43 the tube in which the acidic solution is conducted, and with 44 the electrical conductor, possibly with a pair of wires for operating the pump 16, if it is designed as an electric pump.
- 71, Figure 15 the body of the tapering metal beak, which represents the electrode; with 72 the end of this beak made of insulating material with a bore 73 for feeding the acidic solution to the stocking which represents the plug and is not shown for the sake of clarity; with 74 the head of the screws for attachment to this body, which is attached in the vicinity of the end surface S: the shaft of these screws extends into the corresponding threaded hole 75, Figure 16; at 76 the bore through which the acidic solution is fed into the said body; with 77 the contact surfaces between the body 71 and the end 72: due to the sufficient flexibility of the material used, i.e. glass fiber reinforced Teflon, no seals are used. Should leakages nevertheless occur, these are caught by the stocking made of insulating material fabric, not shown, which completely surrounds the named electrode.
- the material used i.e. glass fiber reinforced Teflon
- the plug consisting of a layer of insulating material fabric 92, if possible made of polyetheretherketone, and an insulating material layer made of felt 93;
- P is the width of the plug strip, which is greater than the width of the beak for which the plug is intended;
- illustration 20 the end of the beak seen from the side, around which the two sides of the plug of the previous illustration are wrapped, the fabric layer 92 being laid on the inside and the felt layer 93 on the outside; with 95 the borehole through which the acidic solution is passed;
- a fastening ring of insulating material which holds the plug 91 on said beak 94; with 97 a metal beak with an exchangeable metal end 98 which is fastened to this beak by means of screws 99; with
- the insulating coating of the replaceable end which can also be made thicker; at 101 the thinner coating on the body of said beak 97 for protection against short circuits; at 102 the metal surface on which the greatest metal wear is given by the electrolytic cleaning action; with 103 the bore for the promotion of the acidic solution.
- an acidic solution with relatively low Proportions of phosphoric acid (52.5 percent by weight) and quinoline (0.01 percent by weight) used in water Due to the thin liquid of this acidic solution in contrast to the high density of the previously used solution, smaller amounts of solution are required, which are directly in the Inside the stocking plug 12 or 54 or the plug 34 of the hollow spout 28 are guided, whereby the dripping of solution on surrounding surfaces is avoided and relatively few and easily washable surfaces result after cleaning, which is a cost advantage represents.
- the hydraulic circuit shown in Figure 3 functions with a pump 16, which can be designed as a manual pump and also operated directly by the operator, with this direct operation both by means of a suction-pressure bulb and electrically Low voltage can take place:
- the tanks 17 or 27 are to be made of insulating material which is under tension from the moment the acidic solution is introduced through the electrode to the inside of the tank because the acid column in the tube conducts the voltage to the tank.
- the pneumatic-hydraulic circuit shown in Figure 4 also functions with a manual pump 22, which pressurizes the tank 23, and the further the solution reaches the beak by opening the valve 25, the more it sinks Pressure in the tank, as a result of which a renewed pressure generation by means of said pump 22 is necessary is.
- the pressure can be maintained automatically by a pressure switch (not shown) which detects the pressure inside the above-mentioned tank.
- the tubular stocking 12, 54 made of insulating material tissue is assembled by pushing the first end 20, 56 onto the beak 11, 52 until it completely envelops it.
- the stocking is twice as long so that it can be turned over, the other end 21, 57 resting exactly on the first end.
- the clamp 13, 58 is placed in such a way that it fixes both ends on the body of the beak 11, 48 at the same time.
- the assembly or replacement of the hollow spout 28, which is provided with a stably preassembled insulating material fabric 34, is analogous, but easier.
- This beak must be snapped with its frustoconical end 29 onto the frustoconical part 27 of the end 26 of the electrode.
- the exchange takes place in the same way, by completely removing the mentioned beak and fitting another beak.
- the hollow beak with a truncated conical snap lock can be designed in various shapes, as can be seen with the beaks in Figures 12 and 13, or with a brush as shown in Figure 14.
- the beaks with snap lock close between the
- Pre-bore 60 and the curved electrode 46 tightly in order to prevent acidic solution from escaping, so that it is completely directed to the supply bore 59.
- the beak can be provided with the tubular stocking folded over the flattened area in such a way that a significantly lower thickness is achieved than with the normal beak 48.
- the pointed and angled design 62 makes it possible of the beak, indentations and pointed inner corners with limited space, to de- otherwise you cannot get there comfortably.
- beaks can be designed with a screw connection instead of a latching connection.
- the beak 63 made with a brush 64 with bristles made of insulating material 65 is used by moving it in the longitudinal or transverse direction to the angle of application weld seam, the bristles stiffened with a cover layer of Teflon or another similar material the bottom of the cavity between the Reach the wall and the weld seam and clean it completely.
- the gun with the slots 36 for sucking off the gases and vapors enables the operator to work completely safely.
- the extracted air, which contains the gases and vapors, is passed through the wet filter 41, which is designed according to the products used for cleaning metal surfaces by treatment with acid.
- the end 72 does not conduct any electrical current, but this takes place through the heads of the screws 74, which are installed in such a way that they are parallel to the end surface S of this end.
- the current is conducted from these screw heads to the stocking soaked with acidic solution, which creates the electrolytic cleaning action. Since the end 72 is non-conductive, it is also not warmed up by the electrolytic action which the stocking exerts on the surface to be cleaned, and consequently the stocking is not permanently damaged by burns.
- the functioning of the electrode with body 78 with a brush made of tubes 79 made of insulating material results from the fact that electric current in the acidic solution is conducted from said metal body 78 to the surface of the cavity to be cleaned, whereby the innermost areas of this cavity are also reached. Tests in which the end of the electrode was made with glass fiber-reinforced Teflon have shown that the stocking has a significantly longer service life than conventional stockings on completely metallic ends, the order of magnitude of the improvement being approximately one working shift.
- the stopper 91 improved with double-layer fabric 92, 93, the outer layer of which is made of felt 93, is put on by wrapping the beak end and fixing the stopper with a fastening ring 96.
- the plug On the side flank of the end, the plug does not necessarily have to have a perfect overlap, but the middle part of this plug must cover the active surface 102 of the metallic end 98, since it is preferably made as a Teflon film with a thickness of 0.6-1.2
- the insulating coating 100 implemented in mm avoids an electrolytic action on the flanks of the end, whereas the completely uncoated side 102 is completely exposed to the action.
- the end can, even if this is less advisable, only be coated with a thin layer of insulating material, for example a Teflon film with a thickness of 0.1-0.3 mm, which also protects it from damage and short circuits on the flanks, as is the case for the body of the beak 97 with the coating 101 is the case.
- a thin layer of insulating material for example a Teflon film with a thickness of 0.1-0.3 mm
- the double-layer stopper 91 Even if different insulating materials can be used for the two layers 92, 93 of the above-mentioned stopper, a maximum service life is achieved for the double-layer stopper 91 if polyetheretherketone-based felt in the inner fabric layer 92 and a felt based on polyetheretherketone in the outer layer 93 is used.
- the double-layer tape can be produced by joining the two layers afterwards or by adding a layer directly during production is applied to the other.
- the worn stopper can easily be replaced by pulling off the fastening ring 96 and replacing the band at the end of the beak.
- the ring 96 of insulating material can be used several times.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Cleaning In General (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Cleaning Or Drying Semiconductors (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Inorganic Insulating Materials (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99125871A EP1022361B1 (en) | 1995-09-27 | 1996-08-27 | Process for cleaning metals after their thermal treatment |
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMO950131 | 1995-09-27 | ||
IT000131 IT1279857B1 (en) | 1995-09-27 | 1995-09-27 | Appts. for cleaning metals which have been subjected to high-temperature processes - incorporating an acid-impregnated insulating pad which is made of polyether ether ketone fabric, and is located between the electrode and the metal undergoing cleaning |
ITMO950156 | 1995-11-10 | ||
IT95MO000156A ITMO950156A1 (en) | 1995-11-10 | 1995-11-10 | ENDS IN INSULATING MATERIAL OF ELECTRODES FOR ELECTROLYTIC CLEANING |
PCT/IT1996/000165 WO1997012081A1 (en) | 1995-09-27 | 1996-08-27 | Device for cleaning metal surfaces after they have been worked at high temperatures |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99125871A Division EP1022361B1 (en) | 1995-09-27 | 1996-08-27 | Process for cleaning metals after their thermal treatment |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0852629A1 true EP0852629A1 (en) | 1998-07-15 |
EP0852629B1 EP0852629B1 (en) | 2000-11-02 |
Family
ID=26331733
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99125871A Expired - Lifetime EP1022361B1 (en) | 1995-09-27 | 1996-08-27 | Process for cleaning metals after their thermal treatment |
EP96930346A Expired - Lifetime EP0852629B1 (en) | 1995-09-27 | 1996-08-27 | Device for cleaning metal surfaces after they have been worked at high temperatures |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99125871A Expired - Lifetime EP1022361B1 (en) | 1995-09-27 | 1996-08-27 | Process for cleaning metals after their thermal treatment |
Country Status (11)
Country | Link |
---|---|
US (1) | US5964990A (en) |
EP (2) | EP1022361B1 (en) |
JP (1) | JP3160603B2 (en) |
CN (1) | CN1067121C (en) |
AT (2) | ATE331056T1 (en) |
AU (1) | AU6942996A (en) |
CA (1) | CA2232571C (en) |
DE (2) | DE59606100D1 (en) |
ES (1) | ES2153126T3 (en) |
IT (1) | IT1279857B1 (en) |
WO (1) | WO1997012081A1 (en) |
Cited By (1)
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US8343320B2 (en) | 2005-02-04 | 2013-01-01 | Edk S.R.L. | Electrolytic acting torch for the surface working of metals |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
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AT411693B (en) * | 2002-07-01 | 2004-04-26 | Fronius Int Gmbh | ELECTROCHEMICAL METHOD FOR CLEANING SURFACES OF METAL WORKPIECES |
IT1311147B1 (en) * | 1999-11-04 | 2002-03-04 | Edk Res Ag | CLEANING MACHINE LOCALIZED WITH CELL, ELECTROLYTIC AND / OR ADULTRASONIC, PICKLING AND / OR POLISHING |
NL1015106C2 (en) * | 2000-05-03 | 2001-11-06 | Jos Klomp Metaalbewerking B V | Removal of stains from stainless steel workpieces involves contacting stained area with applicator containing acid solution and creating electrical circuit between the workpiece and solution |
US20050230267A1 (en) * | 2003-07-10 | 2005-10-20 | Veatch Bradley D | Electro-decontamination of contaminated surfaces |
EP1697563B1 (en) * | 2003-10-21 | 2019-01-09 | Nitty-Gritty S.R.L. | Electrode device with integrated electrolyte supply for the surface treatment of metals |
US7138066B2 (en) * | 2004-12-16 | 2006-11-21 | Gm Global Technology Operations, Inc. | Gear surface treatment procedure |
WO2009105802A1 (en) * | 2008-02-25 | 2009-09-03 | Metal Science Technologies Pty Ltd | Improvements in electropolishing apparatus |
US8662782B2 (en) * | 2008-09-26 | 2014-03-04 | Bissell Homecare, Inc. | Surface cleaning device with a bleach generator |
ITPG20090008A1 (en) * | 2009-03-09 | 2010-09-10 | Crimo Italia Srl | MACHINE FOR PICKLING, PASSIVATION AND CLEANING BY ELECTROLYTIC OF METALLIC SURFACES. |
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Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3865697A (en) * | 1973-05-25 | 1975-02-11 | Robert Suggs | Platinum plating process |
US4206028A (en) * | 1976-12-14 | 1980-06-03 | Inoue-Japax Research Incorporated | Electrochemical polishing system |
FI802444A (en) * | 1980-08-05 | 1982-02-06 | Outokumpu Oy | APPARAT FOER ELEKTROLYTISK POLERING |
US4495045A (en) * | 1984-03-13 | 1985-01-22 | Jackson Thomas R | Electrolytic dental etching apparatus |
US4609450A (en) * | 1985-03-26 | 1986-09-02 | Agency Of Industrial Science And Technology | Combined electrolytic-abrasive polishing apparatus |
DE8513410U1 (en) * | 1985-05-07 | 1985-11-07 | Laidemitt, Klaus-Dieter, 5090 Leverkusen | Device for removing discolouration in the area of welds on metal workpieces, in particular made of stainless steels |
JP2831713B2 (en) * | 1988-08-19 | 1998-12-02 | マルイ鍍金工業株式会社 | Brushes for electrolytic treatment |
US4882019A (en) * | 1988-11-21 | 1989-11-21 | Lewy Michael M | Apparatus and method for polishing a plumbing or electrical fixture |
US5401369A (en) * | 1994-01-21 | 1995-03-28 | Gershin; Mircea-Mike | Electroplating pen |
-
1995
- 1995-09-27 IT IT000131 patent/IT1279857B1/en active IP Right Grant
-
1996
- 1996-08-27 AT AT99125871T patent/ATE331056T1/en not_active IP Right Cessation
- 1996-08-27 EP EP99125871A patent/EP1022361B1/en not_active Expired - Lifetime
- 1996-08-27 JP JP51327397A patent/JP3160603B2/en not_active Expired - Fee Related
- 1996-08-27 CA CA002232571A patent/CA2232571C/en not_active Expired - Fee Related
- 1996-08-27 DE DE59606100T patent/DE59606100D1/en not_active Expired - Lifetime
- 1996-08-27 CN CN96197161A patent/CN1067121C/en not_active Expired - Fee Related
- 1996-08-27 AT AT96930346T patent/ATE197318T1/en not_active IP Right Cessation
- 1996-08-27 AU AU69429/96A patent/AU6942996A/en not_active Abandoned
- 1996-08-27 DE DE59611360T patent/DE59611360D1/en not_active Expired - Fee Related
- 1996-08-27 ES ES96930346T patent/ES2153126T3/en not_active Expired - Lifetime
- 1996-08-27 US US09/043,858 patent/US5964990A/en not_active Expired - Lifetime
- 1996-08-27 WO PCT/IT1996/000165 patent/WO1997012081A1/en active IP Right Grant
- 1996-08-27 EP EP96930346A patent/EP0852629B1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9712081A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8343320B2 (en) | 2005-02-04 | 2013-01-01 | Edk S.R.L. | Electrolytic acting torch for the surface working of metals |
Also Published As
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CA2232571A1 (en) | 1997-04-03 |
ITMO950131A0 (en) | 1995-09-27 |
CA2232571C (en) | 2006-10-24 |
AU6942996A (en) | 1997-04-17 |
CN1197487A (en) | 1998-10-28 |
ATE197318T1 (en) | 2000-11-15 |
CN1067121C (en) | 2001-06-13 |
EP0852629B1 (en) | 2000-11-02 |
EP1022361B1 (en) | 2006-06-21 |
EP1022361A2 (en) | 2000-07-26 |
DE59606100D1 (en) | 2000-12-07 |
ATE331056T1 (en) | 2006-07-15 |
JPH11511512A (en) | 1999-10-05 |
ITMO950131A1 (en) | 1997-03-27 |
JP3160603B2 (en) | 2001-04-25 |
IT1279857B1 (en) | 1997-12-18 |
ES2153126T3 (en) | 2001-02-16 |
DE59611360D1 (en) | 2006-08-03 |
EP1022361A3 (en) | 2000-11-29 |
WO1997012081A1 (en) | 1997-04-03 |
US5964990A (en) | 1999-10-12 |
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