EP2217742A1 - Passivierendes gleitschleifen, insbesondere für aluminium, magnesium und zink - Google Patents
Passivierendes gleitschleifen, insbesondere für aluminium, magnesium und zinkInfo
- Publication number
- EP2217742A1 EP2217742A1 EP08853742A EP08853742A EP2217742A1 EP 2217742 A1 EP2217742 A1 EP 2217742A1 EP 08853742 A EP08853742 A EP 08853742A EP 08853742 A EP08853742 A EP 08853742A EP 2217742 A1 EP2217742 A1 EP 2217742A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- aqueous composition
- ppm
- aluminum
- vibratory
- acidic aqueous
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/12—Accessories; Protective equipment or safety devices; Installations for exhaustion of dust or for sound absorption specially adapted for machines covered by group B24B31/00
- B24B31/14—Abrading-bodies specially designed for tumbling apparatus, e.g. abrading-balls
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/34—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/73—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process
-
- 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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F3/00—Brightening metals by chemical means
- C23F3/02—Light metals
- C23F3/03—Light metals with acidic solutions
Definitions
- the invention relates to a method for vibratory finishing and passively passivating metallic components, which consist at least partially of metals and / or alloys selected from aluminum, magnesium and / or zinc, in one step using an aqueous composition having a pH between 0, 3 and 3.5 containing complex fluorides of the elements boron, silicon, titanium, zirconium or hafnium singly or in admixture with each other in concentrations of the fluoro-anions of between 100 and 4000 ppm as Gleitschleifmedium, as well as a directly produced by this method component and its Use for structural bonding or for the application of further corrosion-protective coatings.
- the present invention comprises the use of a concentrate for producing the vibratory grinding medium in the process according to the invention.
- Metallic workpieces or commodities are nowadays produced largely by way of industrial mass production in automated processes.
- the surfaces of such metal parts which are made of steel, cast iron, copper and its alloys, aluminum and its alloys, zinc, magnesium and other metals, usually still have to be subjected to a finishing before they are sold immediately, used as intended or further processed in known refining become.
- Metallic workpieces produced by turning, milling, casting or similar metal-working processes often have sharp cut edges or corners or rough or scale-coated surfaces, so that deburring and rounding of the cut edges and corners, often even smoothing or polishing of the entire surface, is required.
- the quality of subsequently applied surface layers on such workpieces to a great extent depends on how well the metallic surface is prepared for the application of such additional, refining layers.
- the electrodeposition of metals on such surfaces can only be satisfactory if the galvanic deposition process has been preceded by cleaning, descaling and abrasive machining of the surface.
- the machining of metal workpieces or molded parts can be done either by manual mechanical deburring, grinding, sanding, brushing and polishing or by a mechanical chemical processing method.
- the purely manual mechanical processing of metal parts produced in large quantities, in particular of small metallic parts, is today barely represented for economic reasons.
- the mechanical chemical processing such as the so-called "vibratory grinding” is a method that can be automated in bell apparatus, drum apparatus, vibrating machines or centrifugal machinery.
- the workpieces are brought into sliding contact with natural (pebbles, dolomite, quartz, etc.) or synthetic (ceramic or plastic bonded corundum, alumina, silicon carbide, or boron carbide) abrasive grits of various shapes under spraying with aqueous based compositions specially developed for vibratory finishing.
- natural pebbles, dolomite, quartz, etc.
- synthetic ceramic or plastic bonded corundum, alumina, silicon carbide, or boron carbide
- abrasive grits of various shapes under spraying with aqueous based compositions specially developed for vibratory finishing.
- the size and external shape (triangles, cylinders, stars, cones, balls, etc.) and the roughness of the abrasive particles (“chips”) provides an abrasive, possibly also polishing, treatment of the metal surfaces.
- the chemical treatment compounds ("compounds") used in the course of vibratory finishing are matched in their composition and their dosage to the metallic surfaces which are to be processed by sliding grinding, but must also take into account special features of the special vibratory finishing process.
- the main task of such treatment agents is either to ensure a good cleaning, dispersing and soil-carrying capacity or to provide only one and material-compatible medium for the vibratory finishing process, which prevents severe corrosion of the component and also favorably influences the grinding action and / or polishing effect during the vibratory finishing , Frequently, the components to be machined are pre-cleaned, so that the need to emulsify oil and grease contamination during the vibratory finishing, not necessarily exists.
- the agents are formulated so that they can be concentrated in liquid form or pre-diluted by means of automated pumps.
- Such vibratory abrasives react in water neutral to slightly alkaline and contain combinations of washing-active and corrosion-inhibiting substances.
- the alkaline vibratory grinding media have the disadvantage that they passivate the metallic material surface, in particular aluminum, magnesium and zinc surfaces, only insufficiently adhesion-promoting.
- workpieces treated in the vibratory finishing process can neither be directly coated with varnish systems nor glued together.
- a sufficient adhesion of the paint to the metallic substrate or a permanent connection of the components to the bond can not be guaranteed after vibratory grinding in alkaline media.
- the document DE 38 00 834 describes an agent consisting of orthophosphoric acid and / or pyrophosphoric acids and / or their water-soluble salts, one or more oligocarboxylic acids, and optionally one or more surfactants and one or more corrosion inhibitors, which is suitable as an acidic vibratory grinding medium.
- the advantage of this method according to the disclosure of DE 38 00 834 that a cleaning and passivation of the workpiece surface before the actual vibratory finishing no longer needs to be made and thus reduces the complete pretreatment chain consisting of chemical and mechanical pre-treatment of the workpiece to a process step.
- the method disclosed in DE 38 00 834 opens up the possibility of sufficiently passivating a wide variety of metallic materials during the vibratory finishing process.
- composition of the agent causes on the one hand passivation of non-precious materials, such as iron, on the pickling attack in phosphoric medium and on the other hand, corrosion protection noble materials, such as copper, by the presence of carboxylic acids and other inhibitors, so that workpieces made of different metallic materials in the vibratory finishing process Use of the same vibratory grinding medium, as disclosed in DE 38 00 834, can be treated.
- non-precious materials such as iron
- corrosion protection noble materials such as copper
- the disadvantage of this process is the considerable amount of phosphates in the composition of the vibratory grinding medium.
- phosphate slurries analogously to the processes of phosphating metals, it always comes to the formation of phosphate slurries, which on the one hand can adversely affect the vibratory finishing process and on the other hand have to be removed from the grinding medium and disposed of in a complicated process.
- the object of the present invention is now to provide a method for vibratory finishing of metallic workpieces or molded parts, in particular those of aluminum, magnesium and zinc, as well as their respective alloys, which cooperate the metal surface conditioned with the mechanical process of the vibratory finishing so that an adhesion-promoting passivation of the surface of the workpiece or of the molded part results.
- This adhesion-promoting passivation must be suitable for the structural bonding of the workpieces treated in this process and the application of further paint systems. Furthermore, the vibratory grinding medium used in the process should be completely free of phosphates to avoid phosphate sludge.
- the adhesion-promoting passivation is particularly effective for components made of aluminum, magnesium and zinc, and their respective alloys, so that preference is given to using those components in the process according to the invention composed exclusively of metals and / or alloys selected from aluminum, magnesium and / or zinc are, and most preferably completely made of aluminum and / or its alloys.
- the vibratory grinding medium according to the invention contains not more than 50 ppm, preferably not more than 10 ppm, and more preferably not more than 1 ppm of phosphate.
- the liquid composition is generally referred to, which produces the sliding contact of the metallic structural or molding with the abrasive, also called abrasive body.
- abrasive also called abrasive body.
- alloy is to be understood to mean those mixtures of a metallic character in which the proportion of the respective metallic element is at least 50 At. -% is.
- An adhesion-imparting passivation according to the invention is present when the conversion of the metal surface results in contact of the component with the grinding medium, a corrosion-protective coating in the vibratory finishing process, which also has a surface tension of more than 36 mN / m, preferably more than 42 mN / m and more preferably has more than 50 mN / m.
- compositions or vibratory grinding media used in the process according to the invention may additionally contain polymers of the polyacrylate type and / or the reaction products of poly (vinylphenol) with aldehydes and organic hydroxyl-containing amines in concentrations below 500 mg / l, preferably below 200 mg / l. If the treatment solution contains zirconium, the concentration of the reaction products of poly (vinylphenol) with aldehydes and organic hydroxyl group-containing amines should be less than 100 mg / l.
- the complex fluorides of the elements boron, silicon, titanium, zirconium or hafnium, ie the anions BF 4 " , SiF 6 2" , TiF 6 2 " , ZrF 6 2” or HfF 6 2 " can be in the form of the free acids or as The same applies to the optional components free fluoride and polyhydroxycarboxylic acids If these components are not or not exclusively used in the form of the acids, can be a pH adjustment of the vibratory grinding medium be required in the range of 0.3 to 3.5 according to the invention., for this purpose, in particular phosphoric acid, nitric acid and sulfuric acid are suitable. Depending on the substrate, the presence of sulfate ions in the vibratory grinding medium in concentrations of up to 5% by weight, in particular between 0.1 and 3% by weight, may be advantageous be.
- suitable polymers of the acrylate type including acrylate-containing copolymers are known as commercial products in the prior art.
- Particularly suitable are water-soluble polyacrylic acids in the molar mass range between 20,000 and 100,000 daltons, in particular those having an average molecular weight of about 50,000 to 60,000 daltons, whose 5 wt .-% aqueous solution have a pH of about 2.
- Suitable polymers of the reaction product type of polyvinylphenol with aldehydes and organic amines are known as agents for the surface treatment of metals and in particular for a passivating rinsing of conversion-treated metal surfaces, for example from EP-A-319016 and EP-A-319017. These are polymers having molecular weights of up to 2,000,000 daltons with a preferred molecular weight range between 7,000 and 70,000 daltons.
- the optionally substituted phenol rings can be linked via one or two carbon atoms, it being possible for the chains to have been subjected to a postcrosslinking process. Characteristically, at least a portion of the phenolic rings is attached via a carbon atom to a nitrogen atom bearing a further alkyl substituent having at least one hydroxy function. This construction gives the polymer chelating properties over metal ions.
- the vibratory grinding medium used in the process according to the invention additionally contain water-insoluble, particulate inorganic compounds of the elements silicon, aluminum, zinc, titanium, zirconium, iron, calcium and / or magnesium, wherein the content of these compounds in the Composition based on the element is at least 10 ppm, but does not exceed 500 ppm and 50 wt .-% of the particles have a particle diameter of less than 500 nm, preferably less than 200 nm.
- these particulate inorganic compounds are suitable for increasing the corrosion protection of the passivation and, on the other hand, they increase the roughness of the hydrophilic surface, resulting in a higher surface tension of the material surface and thus facilitating a wetting application of adhesives.
- the vibratory grinding medium may additionally contain in the process according to the invention at least one surface-active compounds in order to carry out the cleaning of the metallic material surfaces of corrosion and lubricating oils during the vibratory finishing process and thus save upstream cleaning steps.
- aqueous compositions containing combinations of one or more nonionic surfactants with one or more anionic or alternatively with one or more cationic surfactants are particularly preferred in the process according to the invention. It can be used with particular advantage such combinations in which nonionic and anionic, or alternatively cationic surfactants in a ratio of 1: 1 to 10: 1 are.
- the total amounts of the surfactants contained in the aqueous solutions used, according to the inventive method in the range of 0.005 to 2 wt.%. These data refer to the active substance content in the vibratory grinding medium.
- AIs special nonionic surfactants come for the inventive method a variety of known from the prior art as surfactants compounds in question.
- addition products of ethylene oxide and / or propylene oxide with fatty alcohols or fatty amines are used as nonionic surfactants, ie alcohols and / or amines which carry 6 to 18 C atoms in the straight-chain or branched-chain alkyl radical.
- nonionic surfactants which are selected from an addition product of 3 to 8, preferably 4 to 6 ethylene oxide units of a fatty amine having 10 to 18, preferably 12 to 14 carbon atoms.
- nonionic surfactants are polyalkylene glycol ethers of the following general formula:
- R ' is a straight-chain or branched alkyl radical having 8 to 18 C atoms
- m is a number from 2 to 4
- n is a number from 7 to 12.
- Such polyalkylene glycol ethers are as low foaming nonionic surfactants, z.T. even known as pronounced defoamer and therefore particularly well suited.
- defoamers based on a fatty alcohol ethoxylate / propoxylate or an addition product of 7 to 12 ethylene oxide units with 8 to 18 C atoms end-capped with an alkyl group having 4 to 8 C atoms are preferred.
- anionic surfactants are used in the vibratory grinding medium of the process according to the invention, these may be, for example, fatty alcohol ether sulfate and / or fatty alcohol ether sulfonates derived from the above-defined fatty alcohols.
- anionic surfactants also include fatty acids and their water-soluble salts, and also naphthalenesulfonic acid or its water-soluble salts.
- Cationic surfactants which are used in combination with nonionic surfactants in the preferred embodiments of the process according to the invention are usually ammonium compounds which contain one or more alkyl radicals, aryl radicals or aralkyl radicals having more than 6 C atoms.
- ammonium compounds have at least one straight-chain alkyl radical having more than 12 C atoms, preferably having 14 to 18 C atoms.
- the anions of such ammonium salts are usually anions of non-corrosive acids.
- Examples of such compounds are lauryldimethylbenzylammonium salts, benzyltrimethylammonium salts, thalkylhydroxyalkylammonium salts (such as butyldimethyl-2-hydroxydodecylammonium benzoate or bis (benzyldimethyl-2-hydroxydodecylammonium) succinate or N-benzyldimethyl-2-hydroxydodecylammonium benzoate) or cyclic quaternary ammonium compounds (such as imidazolinium salts and their substituted in 1 and 2 position derivatives).
- thalkylhydroxyalkylammonium salts such as butyldimethyl-2-hydroxydodecylammonium benzoate or bis (benzyldimethyl-2-hydroxydodecylammonium) succinate or N-benzyldimethyl-2-hydroxydodecylammonium benzoate
- cyclic quaternary ammonium compounds such as imi
- a temperature of the grinding medium of not less than 15 ° C and not more than 60 ° C is preferable.
- the inventive method further comprises that the component after the vibratory grinding is preferably dried with or without intervening rinsing step at a temperature between 40 and 85 0 C.
- Methods according to the invention also include methods in which the user produces the slide grinding medium on site starting from a concentrate. Therefore, the present invention also includes the use of concentrates for producing a vibratory grinding medium for the process according to the invention. Such a concentrate gives by dilution with water by a factor of 4 to 50 the aqueous composition which can be used directly in the vibratory finishing process.
- an aqueous concentrate of the vibratory grinding medium is such that in a finishing process with continuous metering of the concentrate, which results by dilution with water by a factor of 4 to 50, the directly applicable in the vibratory finishing aqueous composition in the trough of a continuous flow vibratory finishing plant by diluting the concentrate with the water fed into the trough, in the trough overflow, which is the aqueous composition applicable in the vibratory finishing process.
- the present invention encompasses a metal component which has been directly processed by the vibratory finishing method according to the invention and its use in a method for applying further corrosion protection layers or structural bonding to other components, preferably those components which have been processed in accordance with the method described here.
- the bonding of the components following the process is particularly preferred because of the adhesion-promoting passivation of the surfaces of the workpieces produced in the inventive slide-grinding process.
- the increase in the surface tension in the vibratory finishing process according to the invention in comparison to the prior art is documented below.
- the prior art forms a method in which an acidic phosphate-containing composition according to DE 38 00 834 is used as Gleitschleifmedium.
- the respective surface tensions were determined by means of test inks on the die-cast housing and chassis parts made of die-cast aluminum (AISi9Cu3).
- test inks a series of standardized liquids (test inks) are applied in the order of their surface tensions to the substrate to be examined with a brush. If a liquid no longer wets, ie does not re-flow within 2 seconds, then the surface tension of the workpiece surface corresponds to that of the test ink that was last used (DIN 53 364).
- Alodine 2040 ® (Henkel.) Used as the starting concentrate and in the ratio 1: 4 pre-diluted with deionized water, was present so that the following composition:
- test pieces of die-cast aluminum were then in the thus set
- the Trowalleiter according to the inventive example however, composed in an acidic, phosphate-containing abrasive medium
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Treatment Of Metals (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007057352A DE102007057352A1 (de) | 2007-11-27 | 2007-11-27 | Passivierendes Gleitschleifen, insbesondere für Aluminium, Magnesium und Zink |
| PCT/EP2008/063945 WO2009068366A1 (de) | 2007-11-27 | 2008-10-16 | Passivierendes gleitschleifen, insbesondere für aluminium, magnesium und zink |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2217742A1 true EP2217742A1 (de) | 2010-08-18 |
| EP2217742B1 EP2217742B1 (de) | 2011-05-18 |
Family
ID=40229711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08853742A Not-in-force EP2217742B1 (de) | 2007-11-27 | 2008-10-16 | Passivierendes gleitschleifen, insbesondere für aluminium, magnesium und zink |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2217742B1 (de) |
| AT (1) | ATE510045T1 (de) |
| DE (1) | DE102007057352A1 (de) |
| ES (1) | ES2364799T3 (de) |
| WO (1) | WO2009068366A1 (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10400337B2 (en) | 2012-08-29 | 2019-09-03 | Ppg Industries Ohio, Inc. | Zirconium pretreatment compositions containing lithium, associated methods for treating metal substrates, and related coated metal substrates |
| US11518960B2 (en) | 2016-08-24 | 2022-12-06 | Ppg Industries Ohio, Inc. | Alkaline molybdenum cation and phosphonate-containing cleaning composition |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL2890830T3 (pl) | 2012-08-29 | 2019-01-31 | Ppg Industries Ohio, Inc. | Kompozycje cyrkonowe do obróbki wstępnej zawierające molibden, powiązane sposoby obróbki podłoży metalicznych i powiązane powlekane podłoża metaliczne |
| EP3081334B1 (de) | 2015-04-13 | 2017-04-05 | wheelnews Schweiz AG | Gleitschleifen und schleifmittel |
| DE102020102778A1 (de) | 2020-02-04 | 2021-08-05 | Kai-Uwe Seeßle | Verfahren und Vorrichtung zum Reinigen eines Werkstücks |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4963596A (en) | 1987-12-04 | 1990-10-16 | Henkel Corporation | Treatment and after-treatment of metal with carbohydrate-modified polyphenol compounds |
| US5039770A (en) | 1987-12-04 | 1991-08-13 | Henkel Corporation | Treatment and after-treatment of metal with polyphenol compounds |
| DE3800834A1 (de) | 1988-01-14 | 1989-07-27 | Henkel Kgaa | Verfahren und mittel zum gleichzeitigen gleitschleifen, reinigen und passivieren metallischer werkstuecke |
| JP3778876B2 (ja) * | 2002-06-10 | 2006-05-24 | 株式会社日本製鋼所 | アルミニウム合金又はマグネシウム合金成形体の化成処理方法 |
| JP2006169580A (ja) * | 2004-12-15 | 2006-06-29 | Arrk Okayama Co Ltd | マグネシウム又はマグネシウム合金からなる製品の製造方法 |
| JP4595093B2 (ja) * | 2005-12-02 | 2010-12-08 | 独立行政法人産業技術総合研究所 | マグネシウム合金材の表面処理方法、及びそれによって処理されたマグネシウム合金材 |
-
2007
- 2007-11-27 DE DE102007057352A patent/DE102007057352A1/de not_active Withdrawn
-
2008
- 2008-10-16 WO PCT/EP2008/063945 patent/WO2009068366A1/de not_active Ceased
- 2008-10-16 EP EP08853742A patent/EP2217742B1/de not_active Not-in-force
- 2008-10-16 ES ES08853742T patent/ES2364799T3/es active Active
- 2008-10-16 AT AT08853742T patent/ATE510045T1/de active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2009068366A1 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10400337B2 (en) | 2012-08-29 | 2019-09-03 | Ppg Industries Ohio, Inc. | Zirconium pretreatment compositions containing lithium, associated methods for treating metal substrates, and related coated metal substrates |
| US11518960B2 (en) | 2016-08-24 | 2022-12-06 | Ppg Industries Ohio, Inc. | Alkaline molybdenum cation and phosphonate-containing cleaning composition |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2009068366A1 (de) | 2009-06-04 |
| ES2364799T3 (es) | 2011-09-14 |
| ATE510045T1 (de) | 2011-06-15 |
| EP2217742B1 (de) | 2011-05-18 |
| DE102007057352A1 (de) | 2009-05-28 |
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