EP1775354A1 - Procédé de nettoyage des surfaces métalliques - Google Patents

Procédé de nettoyage des surfaces métalliques Download PDF

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Publication number
EP1775354A1
EP1775354A1 EP06019733A EP06019733A EP1775354A1 EP 1775354 A1 EP1775354 A1 EP 1775354A1 EP 06019733 A EP06019733 A EP 06019733A EP 06019733 A EP06019733 A EP 06019733A EP 1775354 A1 EP1775354 A1 EP 1775354A1
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EP
European Patent Office
Prior art keywords
fatty alcohol
parts
composition
aqueous solution
metal
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
Application number
EP06019733A
Other languages
German (de)
English (en)
Other versions
EP1775354B1 (fr
Inventor
Marco Dietrich
Walter Mack
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mack GmbH
Original Assignee
Mack GmbH
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Filing date
Publication date
Application filed by Mack GmbH filed Critical Mack GmbH
Publication of EP1775354A1 publication Critical patent/EP1775354A1/fr
Application granted granted Critical
Publication of EP1775354B1 publication Critical patent/EP1775354B1/fr
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/34—Derivatives of acids of phosphorus
    • C11D1/345—Phosphates or phosphites
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/825—Mixtures of compounds all of which are non-ionic
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/042—Acids
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/044—Hydroxides or bases
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/12—Light metals
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/12—Light metals
    • C23G1/125—Light metals aluminium
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
    • C23G1/22—Light metals
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/72—Ethers of polyoxyalkylene glycols
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/722—Ethers of polyoxyalkylene glycols having mixed oxyalkylene groups; Polyalkoxylated fatty alcohols or polyalkoxylated alkylaryl alcohols with mixed oxyalkylele groups
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
    • C11D2111/10—Objects to be cleaned
    • C11D2111/14—Hard surfaces
    • C11D2111/16—Metals
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
    • C11D2111/40—Specific cleaning or washing processes
    • C11D2111/44—Multi-step processes

Definitions

  • the present invention relates to a process for the purification of metal-containing parts, in particular aluminum or magnesium-containing parts, and the use of cleaning solutions for metal-containing parts, in particular aluminum or magnesium-containing parts.
  • metal-containing products that are either entirely made of metals, such as aluminum or magnesium, or have a metal-containing surface are contaminated in the course of their use or have over time on aging. Although these parts may not be impaired in their function, it is nevertheless often necessary, for example for optical reasons, to clean the parts.
  • Such parts are, for example, used in vehicle construction, such as. Transmission, engine or body parts, also come components in aerospace technology, washing machines, dishwashers, etc., into consideration, so all areas that use aluminum or magnesium-containing components ,
  • the object of the present invention is therefore to provide a new cleaning method for reusable parts or products, with which the surface the parts are freed of dirt deposits and signs of aging without affecting or changing the function and material of the surface.
  • the object is further achieved by the use of an aqueous solution containing from 0.2% to 50% of a composition comprising an inorganic acid, at least two fatty alcohol-ethylene oxide-propylene oxide adducts (fatty alcohol EO-PO) and a fatty alcohol ethoxylate and by the use of an aqueous solution having from 0.2% to 15% of a composition comprising sodium hydroxide and phenol ethoxylate phosphate for purifying metal-containing parts.
  • aqueous solution containing from 0.2% to 50% of a composition comprising an inorganic acid, at least two fatty alcohol-ethylene oxide-propylene oxide adducts (fatty alcohol EO-PO) and a fatty alcohol ethoxylate
  • the two steps ensure that the dirt present on the surface of the metal-containing part is dissolved by introduction into the first solution and then cleaned efficiently by introduction into the second solution.
  • the inventors of the present process have developed the cleaning process in numerous experiments and optimized it with the given steps and the cleaning solutions used therein. It was also found that the respective compositions of the first and the second aqueous solution or their percentage content in the aqueous solution can be optimally adapted to the particular part to be cleaned. This is particularly important in view of the various metal alloys from which the parts are made, since thus the parameters can be optimally adjusted for each metal or metal alloy, in particular of aluminum or magnesium alloys. However, the basic principle of the solutions is the same for the different metal or metal alloys.
  • the basis for the aqueous solutions is water, which is either decalcified water, drinking water or demineralized water.
  • the composition of step a) to be applied in an aqueous solution comprises 5% to 80% of an inorganic acid, 0.1% to 3% of a fatty alcohol EO-PO C 10 -C 12 6EO 8PO, 3% to 20% of a fatty alcohol EO-PO C 8 -C 10 5-6EO 3-4PO, 1% to 5% of a fatty alcohol C 8 4EO, 3% to 25% non-ionic surfactants and inhibitors.
  • the inorganic acid may be selected between sulfuric acid, phosphoric acid or nitric acid.
  • composition is composed as in the above-mentioned range and used for use in step a) as an aqueous solution having 0.2% to 50% of the described first composition.
  • the non-ionic surfactants are surface-active substances that reduce the surface tension of the water in the aqueous solution, thereby enabling better wetting of the parts to be cleaned.
  • the surfactants have an emulsifying and dispersing effect of fats and dirt particles.
  • the fatty alcohol EO-PO adducts used have the additional advantage that they have a foam-regulating property and damp any foam occurring.
  • the inhibitors which prevent the material to be purified from being attacked by the aqueous solution, are contained in the composition at from about 0.05% to 1%.
  • the selection of the inhibitors is adjusted depending on the material to be cleaned and the first solution used.
  • As inhibitors for example, aluminum or triazoles can be used.
  • the second composition of step b) to be used in an aqueous solution comprises 10% to 40% sodium hydroxide, 0.5% to 10% phenol ethoxylate phosphate, 0.5 to 8% phosphates, and salts and silicates having.
  • this second composition is assembled in the above-described range and prepared for use in step b) as an aqueous solution having from about 0.2% to about 15% of the described second composition.
  • the present in the composition of silicates and salts provide the highest possible pH, which ensures a good soil removal.
  • the alkali carriers in conjunction with the phosphates are also responsible for corrosion protection.
  • suitable salts for example, phosphates, borates and carbonates can be used, as suitable silicates, for example.
  • the additional amounts of salt to be used are, for example -. U.a. depending on the metal to be cleaned, or the alloy to be cleaned - about 10% to 40%, that of the silicates to be used, for example. From 20% to 50%.
  • rinsing steps a ') and b') are provided after the surface has been dissolved and after the loosened surface has been cleaned.
  • This measure has the advantage that the chemical processes taking place in the purification steps can be interrupted directly by the rinsing steps between the individual purification steps, without mixing the cleaning solutions. If necessary, the rinsing steps can be repeated.
  • water is preferably used which is selected from the group consisting of decalcified water, drinking water or demineralized water.
  • the rinsing takes place via an immersion bath or else by spraying.
  • This embodiment has the advantage that complete wetting of the parts to be cleaned is ensured, so that all surfaces come into uniform contact with the cleaning solutions.
  • the pressure flood method can be used in which the water is removed from the tank by means of a pump and a certain voluntary movement is brought into the bath via a nozzle.
  • a targeted mechanical effect on the parts can be brought by the part movement and the arrangement of the nozzles.
  • the parts in the immersion bath are treated simultaneously with ultrasound in at least one of the cleaning steps.
  • This measure has the advantage that additional detachment and decomposition effects are exerted on the dirt particles by the ultrasonic waves, which can accelerate the cleaning of the surface.
  • the cleaning effect of the ultrasonic waves is based on cavitation: The vibrations cause in the sonicated liquid smallest cavities, which collapse immediately. This creates strong currents and turbulence, which almost burst the existing dirt on the cleaning material.
  • the purification steps are carried out at a temperature of about 10 ° C to about 90 ° C.
  • the temperature which is used during the process depends - as well as the concrete composition - in particular on the degree of contamination and the respective metal or metal alloy and can be specially adjusted to this.
  • step a) and gg are carried out over a period of in each case from about 5 seconds to 20 minutes, and in particular if step a) and gg.
  • Step a ') and step b') in each case over a period of about 5 seconds to about 10 minutes, and step b) over a period of about 5 seconds to about 20 minutes.
  • the duration of the individual cleaning steps depends on the degree of contamination, the type of contamination and the part to be cleaned, or its composition and can be varied accordingly.
  • this passivation step is carried out either by introducing the purified part into a dipping bath of the aqueous solution or by spraying, and in particular if the introduction into a dipping bath is carried out for a period of about 5 seconds to about 10 minutes.
  • water is used as the basis of the particular aqueous solution, which is selected from the group consisting of decalcified water, drinking water or demineralized water.
  • Fig. 1 the process flow of a preferred embodiment of the method according to the invention is shown schematically with reference to a flow chart.
  • an aqueous solution comprising from 0.2 to 50% of a composition comprising from 5 to 80% sulfuric or phosphoric acid, from 0.1 to 3% of a first fatty alcohol EO-PO, from 3 to 20% of a second is provided first Fatty alcohol EO-PO, 1 to 5% of a third fatty alcohol, and 3 to 25% non-ionic surfactants and inhibitors.
  • first Fatty alcohol EO-PO 1 to 5% of a third fatty alcohol
  • non-ionic surfactants and inhibitors To carry out the first step, namely to dissolve the surface, the solution is introduced into a dip tank.
  • the metal-containing part to be cleaned for example a gear, a gear part or engine part, etc.
  • the dip tank filled with the first aqueous solution is introduced into the dip tank filled with the first aqueous solution.
  • either the basin or the solution in the pool or present in the dip tank to be cleaned part can be moved in addition, for example.
  • shaking / shaking the pressurized flood method can be used here in which water is removed from the basin by means of a pump and a targeted movement is brought into the bath via a nozzle. It is also possible to treat the part to be cleaned additionally (or alternatively) with ultrasound.
  • the vibrations in the sonicated liquid cause the smallest cavities, which immediately collapse again. This creates strong currents and turbulence, which almost burst the existing dirt on the cleaning material.
  • the use of ultrasound also depends on the degree of soiling of the part and on the metallic composition of the cleaned part.
  • the time required to treat the part in this solution can be between 5 seconds and 10 minutes, with a choice of between 10 and 90 ° C for this step.
  • the time period and the temperature to be applied also depend on the dirt content of the parts, the materials and the flow rates.
  • the exact composition of the chemistry is tuned as a whole with the temperature of the solution and the residence time of the product in the solution.
  • a next step the product is taken out of the first aqueous solution and rinsed either by means of a dip bath or by spraying.
  • clear water ie either drinking water, decalcified water or demineralized water used.
  • the overall chemical process of the first step is interrupted. If necessary, the rinsing step can be repeated once or several times. Also during the rinsing steps or a temperature of between 10 and 90 ° C and a residence time of the parts in the rinsing medium of between 5 seconds and 10 minutes can be applied. In this case, the temperature and the residence time will depend in particular on the previously applied temperature and on the residence time of the product in the first solution.
  • the part to be cleaned is returned to a dip tank filled with a second aqueous solution.
  • the aqueous solution comprises about 0.2 to 15% of a composition comprising 10 to 40% sodium hydroxide, 0.5 to 10% phenol ethoxylate phosphate, 0.5 to 8% phosphates, as well as salts and silicates.
  • the residence time of the parts in this second solution is from 5 seconds to 20 minutes and depends on the previously used steps, the nature of the material and the degree of soiling.
  • a further rinsing step is carried out, which, like the first rinsing step, can likewise be carried out, for example, by an immersion bath or by spraying.
  • the temperature used in the second rinsing step and the residence time of the rinsing product also depend on the temperatures used previously and on their residence time.
  • a passivation step can take place in order to protect the cleaned part and thus its function against environmental influences.
  • the application of a passivation layer may be particularly desirable if the part is to be stored for a longer period of time after the cleaning, if necessary.
  • the passivation layer does not impair the subsequent reuse of the part or its assembly and its function. Under normal conditions, the effect of the passivation should not lose its protective effect within six months - under indoor conditions and without major fluctuations in temperature.
  • the passivation solution used is a solution which comprises 0.2 to 5% of a composition comprising mineral oil, salts, organic acids, fatty alcohols, inhibitors and emulsifiers. Passivation solutions are well known in the art and can be selected by one skilled in the art based on the underlying material.
  • the residence time of the material in the passivation solution is also between 50 seconds to 10 minutes when using a dip bath, whereby here too a temperature is tuned in accordance with the material and in coordination with previously applied temperatures of the cleaning steps.
  • the individual steps are to be adapted to the respective magnesium and aluminum alloys and adapted, since the success of the cleaning or whitening of the surface taking into account the functional surfaces of the composition used, their percentage use in the solution, the temperature, the residence time in the Bad and possibly applied motion / ultrasound of either the part or the medium is dependent.
  • Parts or products that can be cleaned in this way are all metal-containing products or components, in particular parts that consist of aluminum or magnesium, or of aluminum or magnesium alloys, or have a surface with such metals or alloys, such as vehicle components of automobiles, trucks, but also in the field of dishwashers and washing machines and the field of aerospace engineering.
  • This list is intended to be merely exemplary of the parts which may be cleaned or brightened in the scope of the present application.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Inorganic Chemistry (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Detergent Compositions (AREA)
  • Manufacturing Of Printed Wiring (AREA)
EP06019733A 2005-10-17 2006-09-21 Procédé de nettoyage des surfaces métalliques Active EP1775354B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005050556A DE102005050556B8 (de) 2005-10-17 2005-10-17 Verfahren zur Reinigung von metallhaltigen Oberflächen und Verwendung einer Reinigungslösung

Publications (2)

Publication Number Publication Date
EP1775354A1 true EP1775354A1 (fr) 2007-04-18
EP1775354B1 EP1775354B1 (fr) 2010-11-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP06019733A Active EP1775354B1 (fr) 2005-10-17 2006-09-21 Procédé de nettoyage des surfaces métalliques

Country Status (3)

Country Link
EP (1) EP1775354B1 (fr)
AT (1) ATE488620T1 (fr)
DE (1) DE102005050556B8 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021505773A (ja) * 2017-12-12 2021-02-18 ハイドロ アルミニウム ロールド プロダクツ ゲゼルシャフト ミット ベシュレンクテル ハフツングＨｙｄｒｏ Ａｌｕｍｉｎｉｕｍ Ｒｏｌｌｅｄ Ｐｒｏｄｕｃｔｓ ＧｍｂＨ アルミニウム合金からなる形材、圧延されたストリップおよび薄板のためのピックリング方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITPR20100060A1 (it) * 2010-07-08 2012-01-09 Massimiliano Gazzani Impianto e metodo di decapaggio di un pendino

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49122433A (fr) * 1973-03-28 1974-11-22
EP0234425A2 (fr) * 1986-02-18 1987-09-02 HENKEL CORPORATION (a Delaware corp.) Procédé de nettoyage de récipients en aluminium
US5279677A (en) * 1991-06-17 1994-01-18 Coral International, Inc. Rinse aid for metal surfaces
EP1116803A2 (fr) * 2000-01-12 2001-07-18 Nippon Paint Co., Ltd. Procédé pour le décapage de boítes en aluminium
US6548468B1 (en) * 1999-11-05 2003-04-15 Henkel Corporation Solvent-free or solvent-minimized process and composition for cleaning hard surfaces, especially for removing long-dried paint and carbonaceous soils from aluminum engine parts
JP2003277960A (ja) * 2002-03-26 2003-10-02 Nippon Paint Co Ltd マグネシウム合金の表面処理方法

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Publication number Priority date Publication date Assignee Title
JP2719612B2 (ja) * 1986-01-21 1998-02-25 ヘンケル コーポレイション アルミニウムの洗浄方法
DE4216405A1 (de) * 1992-05-18 1993-11-25 Henkel Kgaa Pumpfähige alkalische Reinigerkonzentrate

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49122433A (fr) * 1973-03-28 1974-11-22
EP0234425A2 (fr) * 1986-02-18 1987-09-02 HENKEL CORPORATION (a Delaware corp.) Procédé de nettoyage de récipients en aluminium
US5279677A (en) * 1991-06-17 1994-01-18 Coral International, Inc. Rinse aid for metal surfaces
US6548468B1 (en) * 1999-11-05 2003-04-15 Henkel Corporation Solvent-free or solvent-minimized process and composition for cleaning hard surfaces, especially for removing long-dried paint and carbonaceous soils from aluminum engine parts
EP1116803A2 (fr) * 2000-01-12 2001-07-18 Nippon Paint Co., Ltd. Procédé pour le décapage de boítes en aluminium
JP2003277960A (ja) * 2002-03-26 2003-10-02 Nippon Paint Co Ltd マグネシウム合金の表面処理方法

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"LOSUNG ZUR ULTRASCHALLREINIGUNG VON ALUMINIUMTEILEN", GALVANOTECHNIK, EUGEN G.LEUZE VERLAG, SAULGAU/WURTT, DE, vol. 80, no. 1, January 1989 (1989-01-01), pages 173, XP000026617, ISSN: 0016-4232 *
DATABASE WPI Week 197521, Derwent World Patents Index; AN 1975-35079W, XP002417157 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021505773A (ja) * 2017-12-12 2021-02-18 ハイドロ アルミニウム ロールド プロダクツ ゲゼルシャフト ミット ベシュレンクテル ハフツングＨｙｄｒｏ Ａｌｕｍｉｎｉｕｍ Ｒｏｌｌｅｄ Ｐｒｏｄｕｃｔｓ ＧｍｂＨ アルミニウム合金からなる形材、圧延されたストリップおよび薄板のためのピックリング方法

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Publication number Publication date
DE102005050556B3 (de) 2007-03-22
DE102005050556B8 (de) 2007-07-26
EP1775354B1 (fr) 2010-11-17
ATE488620T1 (de) 2010-12-15

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