EP0613964B1 - Procédé facilitant la déformation à froid - Google Patents

Procédé facilitant la déformation à froid Download PDF

Info

Publication number
EP0613964B1
EP0613964B1 EP94200388A EP94200388A EP0613964B1 EP 0613964 B1 EP0613964 B1 EP 0613964B1 EP 94200388 A EP94200388 A EP 94200388A EP 94200388 A EP94200388 A EP 94200388A EP 0613964 B1 EP0613964 B1 EP 0613964B1
Authority
EP
European Patent Office
Prior art keywords
calculated
phosphating solution
phosphate
dipped
ferrous materials
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.)
Expired - Lifetime
Application number
EP94200388A
Other languages
German (de)
English (en)
Other versions
EP0613964A1 (fr
Inventor
Klaus-Dieter Nittel
Karlheinz Zander
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.)
GEA Group AG
Original Assignee
Metallgesellschaft AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Metallgesellschaft AG filed Critical Metallgesellschaft AG
Publication of EP0613964A1 publication Critical patent/EP0613964A1/fr
Application granted granted Critical
Publication of EP0613964B1 publication Critical patent/EP0613964B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • C23C22/36—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 containing also phosphates
    • C23C22/368—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 containing also phosphates containing magnesium cations
    • 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
    • C23C22/07—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 phosphates
    • C23C22/08—Orthophosphates
    • C23C22/12—Orthophosphates containing zinc cations
    • C23C22/14—Orthophosphates containing zinc cations containing also chlorate anions
    • 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
    • C23C22/36—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 containing also phosphates
    • C23C22/362—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 containing also phosphates containing also zinc cations

Definitions

  • the invention relates to a method for facilitating the non-cutting cold forming of ferrous materials by applying a phosphate coating in an immersion process by means of an aqueous acid phosphating solution which contains zinc, Mg and phosphate ions as well as oxidizing agents and is practically free of Fe-II ions.
  • Phosphate coatings are usually applied to metal surfaces in order to improve their corrosion resistance and to increase the adhesion of the paint that is subsequently applied. Phosphate coatings also serve to facilitate non-cutting cold forming, whereby they themselves act as a "lubricant" by helping to avoid seizing or welding of material and tools or by binding a subsequently applied lubricant so that it is practically not removed during the forming process. In particular, the latter ability is of particular importance because only the combination of phosphate coating and lubricant enables multiple or strong cold forming, possibly without a new intermediate treatment with lubricant.
  • Layer-forming here means the formation of phosphate coatings by means of phosphating solutions which, in addition to the phosphate ions, also predominantly Supply cations for coating formation.
  • the cations of the phosphate coating usually originate from the treated metal itself, ie the phosphating solution essentially only provides the phosphate ions.
  • EP-A-45110 describes a process for the production of phosphate coatings on iron or steel surfaces by immersion or flooding, in which phosphating solutions are used which contain at least 0.3% by weight of Zn and at least 0.3% by weight. % PO4 and contain at least 0.75 wt .-% NO3 or an equivalent, iron II non-oxidizing accelerator.
  • the Zn: PO4 weight ratio should be greater than 0.8 and the iron (II) content to be set should be 0.05 to 1% by weight.
  • the solutions described here can contain calcium, which can be partially or completely replaced by magnesium, and are suitable for the production of phosphate coatings, among other things. as preparation for cold forming.
  • EP-A-403 241 it is known to form zinc phosphate coatings on metal surfaces with the aid of aqueous zinc phosphate solutions which contain 2 to 20 g / l zinc, 5 to 40 g / l phosphate and silicotungstic acid or silicotungstate in a concentration of 0.005 to 20 g / l (calculated as W) included.
  • the phosphating solutions can contain nitrite, nitrobenzenesulfate, hydrogen peroxide, nitrate and chlorate as accelerators.
  • nickel, cobalt, calcium and manganese in the phosphating solution that of magnesium is also mentioned in an amount of 0.5 to 10 g / l.
  • the process has been described as being suitable for preparing metals for the subsequent cold forming.
  • solutions which contain 0.4 to 30 g / l zinc, 4 to 30 g / l P2O5, 5 to 50 g / l NO3, and a maximum of 10 g / l Fe II and a maximum of 0.3 g / l Fe III.
  • These solutions which May also contain up to 10 g / l of magnesium, are supplemented in a certain way and operated with a certain addition of oxidizing agent, so that the actual aim of this process - to be able to work essentially without waste water - can be achieved.
  • the increased alkali resistance of the coatings containing mixed phosphates, which makes them particularly suitable as a primer for paints, is mentioned as an advantage for the magnesium content or for the calcium content of the phosphating solutions, which is shown to be equivalent.
  • the object of the invention is to provide a method for facilitating the cold forming of ferrous materials by applying a phosphate coating, which avoids the disadvantages of the known methods, in particular does not pose any waste water problems, leads to firmly adhering coatings with a sufficient thickness for the cold forming and yet allows simple process control.
  • the object is achieved by equipping the method of the type mentioned at the outset in accordance with the invention in such a way that the iron materials are immersed in a phosphating solution which is free of elements of the sixth subgroup of the Periodic Table of the Elements and free of nitrogen compounds, and 5 to 20 g / l zinc 1 to 15 g / l magnesium 10 to 26 g / l phosphate (calculated as P2O5) 1 to 15 g / l fluoroborate (calculated as BF4) 1 to 7 g / l chlorate (calc. As ClO3) contains and in which the weight ratio of Zn: Mg: BF4 is set to a value in the range from 1: (0.15 to 1): (0.15 to 1).
  • a preferred embodiment of the invention accordingly provides that the ferrous materials are immersed in a phosphating solution 6 to 17 g / l zinc 2 to 5 g / l magnesium 13 to 20 g / l phosphate (calculated as P2O5) 2 to 5 g / l fluoroborate (calculated as BF4) 2 to 4 g / l chlorate (calculated as ClO3) contains.
  • This embodiment of the invention as the further preferred embodiment with setting a weight ratio of Zn: Mg: BF4 of 1: (0.23 to 0.46): (0.23 to 0.46) is associated with the advantage that the Chemical consumption is very low, on the other hand, a particularly good phosphate layer formation is achieved.
  • a phosphating solution which contains 5 to 40 g / l, preferably 10 to 30 g / l, of sulfate.
  • chlorides and acetate additives are also possible to adjust the electroneutrality in the phosphating solution.
  • they are less advantageous for reasons of a certain susceptibility to corrosion of the treated workpieces (chloride) or the comparatively high cost (acetate).
  • the addition of sulfate also has the advantage that it has a favorable influence on the crystal structure of the phosphate layer produced, in that the absorption capacity and the anchoring of the lubricant normally applied are improved.
  • the S value of the phosphating solution to be used should be in the range from 0.1 to 0.4.
  • the S-value is the ratio of "free acid” - calculated as P2O5 - and the so-called “total acid Fischer", ie the total amount of P2O5, expressed as consumption of 0.1 n NaOH in ml for the titration of a 10 ml bath sample (cf. W. Rausch "The phosphating of metals", 2nd Ed., Eugen G. Leuze Verlag Saalgau 1988, pp. 299-304).
  • Another advantageous embodiment of the invention provides that the ferrous materials are immersed in a phosphating solution which is nickel-free.
  • the freedom from nickel has the advantage that the treatment of the rinse water or else the processed phosphating bath is easier before draining into the sewer and less problematic sludge is obtained as a result of the treatment. From the point of view of workplace hygiene, it is an advantage both in the phosphating plant and in the cold forming equipment (dust formation).
  • the application temperature of the phosphating solution is unlimited within wide limits.
  • the iron materials are immersed in a phosphating solution set at a temperature of 50 to 70 ° C. These are the optimal conditions with regard to layer formation speed and heat economy. At the aforementioned temperatures, the treatment time is generally between 3 and 15 minutes.
  • the phosphating solution can be formulated as such from the individual components, but particularly expediently from a concentrate. In both cases, the cations are introduced, for example, as metal, oxide, carbonate, sulfate, phosphate, and possibly also as chlorate.
  • the component can be added via alkali phosphate and / or phosphoric acid.
  • the phosphating solutions used in the process according to the invention can contain, in addition to the components already mentioned, other additives known per se, but mostly in minor amounts. These include, for example, copper, manganese, calcium and sludge conditioning agents.
  • the phosphating solution is applied in dipping, which also means flooding.
  • phosphate coatings with a layer weight of approximately 5 to 15 g / m 2. This enables the layer weight to be adapted to the severity of the intended cold forming, the size of the workpiece and the like. Finally, when choosing the layer weight, it must also be considered whether a lubricant is subsequently applied or not.
  • the workpieces are pretreated before phosphating in the usual way, such as by cleaning, pickling, rinsing and, if necessary, activating.
  • a lubricant customary for cold forming processes is usually applied as aftertreatment. This can be done immediately after coating or after an intermediate rinse. The lubricant can also be applied immediately before the forming, if necessary also between the forming steps. If the purpose of the formation of zinc soaps is with the application of lubricant, care must be taken to ensure that the phosphate coating is sufficiently moist for the reaction.
  • Soaps, oils and other auxiliaries for cold forming or emulsions of fatty acids or soaps, in particular with 8 to 18 carbon atoms in the acid anion, can be applied as lubricants. Because of the reaction with the cation of the phosphate coating already mentioned above, sodium and / or potassium soaps, in particular stearates, are particularly advantageous.
  • the steel grade ST35 pipes were pulled at a speed of 60 m / min, the steel grade ST52 at a speed of 30 m / min.

Claims (9)

  1. Procédé facilitant la déformation à froid sans enlèvement de copeaux de produits ferreux par application d'un revêtement de phosphate par le procédé d'immersion au moyen d'une solution aqueuse acide de phosphatation, qui contient des ions de zinc, des ions de Mg et des ions phosphates, de même que des agents d'oxydation et qui est pratiquement exempte d'ions Fe (II), caractérisé en ce qu'on immerge les produits ferreux dans une solution de phosphatation qui est exempte d'éléments du sixième sous-groupe du système périodique des éléments, de même qu'exempte de composés de l'azote et qui contient
       5 à 20 g/l de zinc
       1 à 15 g/l de magnésium
       10 à 26 g/l de phosphate (calculé sous forme de P₂O₅)
       1 à 15 g/l de fluoroborate (calculé sous forme de BF₄)
       1 à 7 g/l de chlorate (calculé sous forme de ClO₃)
    et dans laquelle le rapport massique de Zn : Mg : BF₄ est réglé à une valeur dans la gamme de 1 : (0,15 à 1) : (0,15 à 1).
  2. Procédé selon la revendication 1, caractérisé en ce qu'on immerge les produits ferreux dans une solution de phosphatation qui contient
       6 à 17 g/l de zinc
       2 à 5 g/l de magnésium
       13 à 20 g/l de phosphate (calculé sous forme de P₂O₅)
       2 à 5 g/l de fluoroborate (calculé sous forme de BF₄)
       2 à 4 g/l de chlorate (calculé sous forme de ClO₃).
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce qu'on immerge les produits ferreux dans une solution de phosphatation dans laquelle le rapport massique de Zn : Mg : BF₄ est réglé à une valeur dans la gamme de 1 : (0,23 à 0,46) : (0,23 à 0,46).
  4. Procédé selon la revendication 1, 2 ou 3, caractérisé en ce qu'on immerge les produits ferreux dans une solution de phosphatation qui contient 5 à 40 g/l de sulfate (calculé sous forme de SO₄).
  5. Procédé selon la revendication 4, caractérisé en ce qu'on immerge les produits ferreux dans une solution de phosphatation qui contient 10 à 30 g/l de sulfate (calculé sous forme de SO₄).
  6. Procédé selon une ou plusieurs des revendications 1 à 5, caractérisé en ce qu'on immerge les produits ferreux dans une solution de phosphatation qui présente une valeur S dans la gamme de 0,1 à 0,4.
  7. Procédé selon une ou plusieurs des revendications 1 à 6, caractérisé en ce qu'on immerge les produits ferreux dans une solution de phosphatation qui est exempte de nickel.
  8. Procédé selon une ou plusieurs des revendications 1 à 7, caractérisé en ce qu'on immerge les produits ferreux dans une solution de phosphatation réglée à une température de 50 à 70 °C.
  9. Procédé selon une ou plusieurs des revendications 1 à 8, caractérisé en ce qu'on immerge les produits ferreux dans une solution de phosphatation pendant une durée de 3 à 15 minutes.
EP94200388A 1993-03-02 1994-02-15 Procédé facilitant la déformation à froid Expired - Lifetime EP0613964B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4306446A DE4306446A1 (de) 1993-03-02 1993-03-02 Verfahren zur Erleichterung der Kaltumformung
DE4306446 1993-03-02

Publications (2)

Publication Number Publication Date
EP0613964A1 EP0613964A1 (fr) 1994-09-07
EP0613964B1 true EP0613964B1 (fr) 1995-11-08

Family

ID=6481724

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94200388A Expired - Lifetime EP0613964B1 (fr) 1993-03-02 1994-02-15 Procédé facilitant la déformation à froid

Country Status (10)

Country Link
US (1) US5415701A (fr)
EP (1) EP0613964B1 (fr)
JP (1) JPH06322550A (fr)
KR (1) KR100324862B1 (fr)
CN (1) CN1040779C (fr)
AT (1) ATE130052T1 (fr)
DE (2) DE4306446A1 (fr)
ES (1) ES2081224T3 (fr)
TW (1) TW270901B (fr)
ZA (1) ZA941457B (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4630326B2 (ja) * 1999-08-09 2011-02-09 新日本製鐵株式会社 加工性に優れたリン酸塩処理亜鉛系めっき鋼板の製造方法
ATE399218T1 (de) 2002-07-10 2008-07-15 Chemetall Gmbh Verfahren zur beschichtung von metallischen oberflächen
DE10320313B4 (de) * 2003-05-06 2005-08-11 Chemetall Gmbh Verfahren zum Beschichten von metallischen Körpern mit einer Phosphatierungslösung, Phosphatierungslösung und die Verwendung des beschichteten Gegenstandes
DE10323305B4 (de) * 2003-05-23 2006-03-30 Chemetall Gmbh Verfahren zur Beschichtung von metallischen Oberflächen mit einer Wasserstoffperoxid enthaltenden Phosphatierungslösung, Phosphatierlösung und Verwendung der behandelten Gegenstände
TWI457433B (zh) * 2008-01-30 2014-10-21 Chemetall Gmbh 將金屬表面施以一磷酸鹽層然後施以一潤滑劑層的方法
TWI457432B (zh) * 2008-01-30 2014-10-21 Chemetall Gmbh 將金屬表面施以一含蠟的潤滑劑組成物的方法
TWI457431B (zh) * 2008-01-30 2014-10-21 Chemetall Gmbh 將金屬表面施以一種潤滑劑組成物的方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1796102A1 (de) * 1968-08-31 1972-02-17 Metallgesellschaft Ag Verfahren zum Aufbringen eines Phosphatueberzuges auf Oberflaechen von Eisen und Stahl
FR2389683A1 (en) * 1977-05-03 1978-12-01 Parker Ste Continentale Phosphating soln. contg. boron fluoride - for phosphating ferrous and non-ferrous surfaces, e.g. steel, zinc and aluminium
GB2080835B (en) * 1980-07-25 1984-08-30 Pyrene Chemical Services Ltd Prevention of sludge in phosphating baths
ES2036666T3 (es) * 1987-08-19 1993-06-01 Metallgesellschaft Ag Procedimiento para fosfatar metales.
JPH0696773B2 (ja) * 1989-06-15 1994-11-30 日本ペイント株式会社 金属表面のリン酸亜鉛皮膜形成方法
DE3927613A1 (de) * 1989-08-22 1991-02-28 Metallgesellschaft Ag Verfahren zur erzeugung von phosphatueberzuegen auf metalloberflaechen
JPH03107469A (ja) * 1989-09-21 1991-05-07 Nippon Parkerizing Co Ltd 裸耐食性に優れたりん酸塩化成皮膜を有する亜鉛系めっき材料

Also Published As

Publication number Publication date
EP0613964A1 (fr) 1994-09-07
CN1040779C (zh) 1998-11-18
ZA941457B (en) 1995-09-04
DE4306446A1 (de) 1994-09-08
US5415701A (en) 1995-05-16
JPH06322550A (ja) 1994-11-22
KR940021761A (ko) 1994-10-19
ES2081224T3 (es) 1996-02-16
ATE130052T1 (de) 1995-11-15
TW270901B (fr) 1996-02-21
CN1093416A (zh) 1994-10-12
DE59400038D1 (de) 1995-12-14
KR100324862B1 (ko) 2002-06-20

Similar Documents

Publication Publication Date Title
DE102005023023B4 (de) Verfahren zur Vorbereitung von metallischen Werkstücken zum Kaltumformen, mit dem Verfahren beschichtete Werkstücke und ihre Verwendung
DE972727C (de) Verfahren zur Behandlung von Metalloberflaechen vor dem Aufbringen von UEberzuegen
WO2000068458A1 (fr) Traitement prealable de surfaces d'aluminium a l'aide de solutions exemptes de chrome
DE4443882A1 (de) Verfahren zum Aufbringen von Phosphatüberzügen auf Metalloberflächen
EP0155547B1 (fr) Procédé pour la phosphatation au zinc-calcium de surfaces métalliques à basse température de traitement
EP0359296B1 (fr) Procédé de phosphatation
EP0288853B1 (fr) Procédé pour le traitement préparatoire de pièces en titane ou en alliages de titane
EP0186823B1 (fr) Procédé pour faciliter la déformation à froid
EP0613964B1 (fr) Procédé facilitant la déformation à froid
EP0931179B1 (fr) Procede pour la phosphatation d'un feuillard d'acier
DE4228470A1 (de) Verfahren zur Phospatierung von einseitig verzinktem Stahlband
EP0603921B1 (fr) Procédé pour former des revêtements de phosphate
EP0111223B1 (fr) Procédé de phosphatation de surfaces métalliques et compositions appropriées à ce procédé
EP1090160B1 (fr) Commande de poids de couche lors de la phosphatation d'une bande
EP0215041B1 (fr) Procede de phosphatation de surfaces metalliques
DE19740953A1 (de) Verfahren zur Phosphatierung von Stahlband
DE3630246A1 (de) Verfahren zur erzeugung von phosphatueberzuegen sowie dessen anwendung
EP0866888B1 (fr) Procede pour la phosphatation de surfaces metalliques
DE2424382A1 (de) Verfahren zur vorbereitung von metallischen werkstuecken fuer die spanlose kaltumformung
DE1088311B (de) Verfahren zur Herstellung festhaftender Schutzueberzuege auf Oberflaechen aus Titan,Zirkon oder Legierungen derselben
DE19639597A1 (de) Phosphatierverfahren für schnellaufende Bandanlagen
DE1911972A1 (de) Verfahren zur Tauchphosphatierung von Eisen und Stahl
DE10310680A1 (de) Verfahren zur Phosphatierung mit einer Kombination von Beschleunigern
AT238530B (de) Verfahren zum Aufbringen von feinkristallinen Phosphatschichten auf Metalloberflächen
DE3637944A1 (de) Chemischer umwandler-film auf der basis von zinkphosphat und verfahren zu dessen erzeugung

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE ES FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19941005

17Q First examination report despatched

Effective date: 19950310

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES FR GB IT LI NL SE

REF Corresponds to:

Ref document number: 130052

Country of ref document: AT

Date of ref document: 19951115

Kind code of ref document: T

REF Corresponds to:

Ref document number: 59400038

Country of ref document: DE

Date of ref document: 19951214

ET Fr: translation filed
ITF It: translation for a ep patent filed

Owner name: STUDIO JAUMANN

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2081224

Country of ref document: ES

Kind code of ref document: T3

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19960126

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20020115

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20020129

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20020204

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20020207

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20020214

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20020227

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030215

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030216

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030217

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030901

EUG Se: european patent has lapsed
GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031031

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20030901

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20030217

REG Reference to a national code

Ref country code: CH

Ref legal event code: PUE

Owner name: CHEMETALL GMBH

Free format text: METALLGESELLSCHAFT AKTIENGESELLSCHAFT#REUTERWEG 14#D-60323 FRANKFURT AM MAIN (DE) -TRANSFER TO- CHEMETALL GMBH#TRAKEHNER STRASSE 3#60487 FRANKFURT AM MAIN (DE)

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20070213

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20070214

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20070627

Year of fee payment: 14

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080229

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080229

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080215

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080215

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20130426

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59400038

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20140218