EP0037143B1 - Schmelztauchverfahren - Google Patents

Schmelztauchverfahren Download PDF

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Publication number
EP0037143B1
EP0037143B1 EP81200313A EP81200313A EP0037143B1 EP 0037143 B1 EP0037143 B1 EP 0037143B1 EP 81200313 A EP81200313 A EP 81200313A EP 81200313 A EP81200313 A EP 81200313A EP 0037143 B1 EP0037143 B1 EP 0037143B1
Authority
EP
European Patent Office
Prior art keywords
zinc
bath
baths
aluminium alloy
products
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
Application number
EP81200313A
Other languages
English (en)
French (fr)
Other versions
EP0037143A1 (de
Inventor
Jacques Pelerin
Dimitri Coutsouradis
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.)
Centre de Recherches Metallurgiques CRM ASBL
Original Assignee
Centre de Recherches Metallurgiques CRM ASBL
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
Priority claimed from BE6/47114A external-priority patent/BE882430A/fr
Priority claimed from BE6/47184A external-priority patent/BE883725A/fr
Priority claimed from BE6/47183A external-priority patent/BE883724A/fr
Application filed by Centre de Recherches Metallurgiques CRM ASBL filed Critical Centre de Recherches Metallurgiques CRM ASBL
Publication of EP0037143A1 publication Critical patent/EP0037143A1/de
Application granted granted Critical
Publication of EP0037143B1 publication Critical patent/EP0037143B1/de
Expired 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
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • 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
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
    • C23C2/06—Zinc or cadmium or alloys based thereon
    • 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
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
    • C23C2/12—Aluminium or alloys based thereon

Definitions

  • the present invention relates to a method of hot coating a material of any shape in semi-calm steel, calm or alloyed with silicon.
  • the process which is the subject of the present description is applicable in all cases where several successive molten metal baths are used to form a zinc coating with a high aluminum content on the said material, both in the context of the coating with hot so that during continuous processes.
  • Zn-AI coating consists of passing the fluxed sheet through a first Zn bath, then into a lead bath, then only into a liquid bath. of Zn-AI, so as to form the desired coating of Zn-AI alloy.
  • the installations constructed for the implementation of these methods generally comprise a tank separated into two parts by a transverse partition, provided in its lower part, with means to allow the passage from one side to the other of the partition, of the material. treat. It is thus normal to find at the bottom of the tank, over its entire base section, a lead bath of height greater than the passage means provided in the partition, and, supernatant on the lead bath, but separated by this same partition, on the one hand a practically pure zinc bath and on the other hand a zinc bath containing about 10% of aluminum.
  • the sheet to be treated enters the curve, on one side of the transverse partition, passes successively into the bath of practically pure zinc, into the lead bath and, after passing the other side of the partition, exits through the Zn-AI alloy bath, which gives the desired coating layer.
  • This method is mainly applied in the case of Zn-1 0% AI alloys, i.e. coating baths for which the temperatures erasures in use are close to those of traditional galvanizing baths, because the melting temperatures of the materials constituting the baths located on either side of the partition are almost identical.
  • the use of this type of process is no longer possible in the case of zinc alloys with a high aluminum content, in particular in the case of alloys having a melting point higher than that of traditional galvanizing baths, located around 440-460 ° C.
  • British patent GB-A-337,399 relates to a process for coating steel strips by immersion in several successive baths, in particular of zinc and then of aluminum or of zinc containing 3 to 20% of aluminum.
  • the aluminum or zinc-aluminum bath causes the zinc coating to melt and be eliminated, and its replacement respectively by aluminum or zinc-aluminum.
  • English patent GB-A-876,032 discloses a process for the formation of two successive layers of coating, consisting respectively of zinc and a zinc-aluminum alloy.
  • the subject of the present invention is precisely a process using several successive metal baths and making it possible to produce, on silicon steel materials, coatings which do not have the drawbacks mentioned above.
  • the invention relates to a process for hot coating a material of any shape in semi-calm steel, calm or alloyed with silicon, in which the said material is immersed in a first bath essentially consisting of zinc or a first zinc-aluminum alloy, then in a second bath essentially consisting of a second zinc-aluminum alloy, said first and second bath being at different temperatures.
  • a first variant of this process is characterized in that at least one of the so-called zinc-aluminum alloy baths has an aluminum content of between 3% and 10% and in that at least Sb elements are added thereto , Ce, Mg, La, Sn, in a content not exceeding 0.5% by weight.
  • the method of the invention is characterized in that at least one of the so-called zinc-aluminum alloy baths has an aluminum content of less than or equal to 10% and in that magnesium is added to it in a content not exceeding 10% by weight.
  • the method of the invention is characterized in that at least one of said baths of zinc-aluminum alloy has an aluminum content of between 20% and 80% and in that it is added to it silicon and magnesium, each in a content not exceeding 3% by weight.
  • the material to be treated which may be hot, is immersed in said first bath for a duration of less than 3 minutes, and in the second bath for a duration less than 20 minutes, and the duration of stay of the material in the second bath is preferably at least equal to its stay in the first bath.
  • the method of the invention makes it possible to minimize the influence of the quality of the surface preparation of the material, while making it possible to obtain coatings of constant thickness and satisfactory adhesion on silicon steel materials.
  • This favorable behavior is due to the formation of a multilayer coating which has a multi-phase metallic outer layer composed of phases enriched in at least two different metals, the number of phases enriched in a given metal being advantageously greater than one.
  • intermetallic layers containing in particular iron or consisting of a determined metal (hereinafter called M t ), while the polyphase surface layer comprises metal M "as well as one or more other metals (hereinafter called M 2 ... M ”) forming with M, and / or between them the different phases mentioned above.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Coating With Molten Metal (AREA)

Claims (4)

1. Schmelztauchverfahren für beliebig geformte Gegenstände aus halbberuhigtem oder beruhigtem oder siliciumlegiertem Stahl, wonach der Gegenstand in ein erstes, im wesentlichen auz Zink oder einer ersten Zink-Aluminium-Legierung bestehendes Bad, dann in ein zweites, im wesentlichen aus einer zweiten Zink-Aluminium-Legierung bestehendes Bad getaucht wird und das erste und das zweite Bad sich auf unterschiedlicher Temperatur befinden, dadurch gekennzeichnet, daß mindestens eines der Zink-Aluminium-Legierungs-Bäder einen Aluminiumgehalt zwischen 3% und 10% hat, und daß ihm mindestens eines der Elemente Sb, Ce, Mg, La, Sn mit einem Anteil von höchstens 0,5 Gewichtsprozent zugesetzt wird.
2. Schmelztauchverfahren für beliebig geformte Gegenstände aus halbberuhigtem oder beruhigtem oder siliciumlegiertem Stahl, wonach der Gegenstand in ein erstes, im wesentlichen aus Zink oder einer ersten Zink-Aluminium-Legierung bestehendes Bad, dann in ein zweites, im wesentlichen aus einer zweiten Zink-Aluminium-Legierung bestehendes Bad getaucht wird und das erste und das zweite Bad sich auf unterschiedlicher Temperatur befinden, dadurch gekennzeichnet, daß mindestens eines der Zink-Aluminium-Legierungs-Bäder einen Aluminiumgehalt von höchstens 10% hat, und daß ihm Magnesium mit einem Anteil von höchstens 10 Gewichtsprozent zugesetzt wird.
3. Schmelztauchverfahren für beliebig geformte Gegenstände aus halbberuhigtem oder beruhigtem oder siliciumlegiertem Stahl, wonach der Gegenstand in ein erstes, im wesentlichen aus Zink oder einer ersten Zink-Aluminium-Legierung bestehendes Bad, dann in ein zweites, im wesentlichen aus einer zweiten Zink-Aluminium-Legierung bestehendes Bad getaucht wird und das erste und das zweite Bad sich auf unterschiedlicher Temperatur befinden, dadurch gekennzeichnet, daß mindestens eines der Zink-Aluminium-Legierungs-Bäder einen Aluminiumgehalt zwischen 20% und 80% hat, und daß ihm Silicium und Magnesium mit einem Anteil von jeweils höchstens 3 Gewichtsprozent zugesetzt werden.
4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Verweildauer das Gegenstands in dem ersten Bad weniger als 3 min beträgt und daß die Verweildauer des Gegenstands in dem zweiten Bad weniger als 20 min beträgt, wobei die Verweildauer des Gegenstands in dem zweiten Bad mindestens gleich seiner Verweildauer in dem ersten Bad ist.
EP81200313A 1980-03-25 1981-03-20 Schmelztauchverfahren Expired EP0037143B1 (de)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
BE6/47114A BE882430A (fr) 1980-03-25 1980-03-25 Procede de revetement a chaud
BE47114 1980-03-25
BE47184 1980-06-09
BE6/47184A BE883725A (fr) 1980-06-09 1980-06-09 Procede de protection par des revetements metalliques multi-couches polyphases
BE6/47183A BE883724A (fr) 1980-06-09 1980-06-09 Procede de revetement a chaud d'aciers au silicium
BE47183 1980-06-09

Publications (2)

Publication Number Publication Date
EP0037143A1 EP0037143A1 (de) 1981-10-07
EP0037143B1 true EP0037143B1 (de) 1985-03-20

Family

ID=27159690

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81200313A Expired EP0037143B1 (de) 1980-03-25 1981-03-20 Schmelztauchverfahren

Country Status (2)

Country Link
EP (1) EP0037143B1 (de)
DE (1) DE3169319D1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10003680A1 (de) * 2000-01-28 2001-08-09 Thyssenkrupp Stahl Ag Verfahren zum Herstellen eines mit einer Zinkbeschichtung versehenen Stahlbandes und zinkbeschichtetes Stahlband

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0097487A3 (de) * 1982-06-17 1984-09-12 Uss Engineers And Consultants, Inc. Verfahren zum Herstellen korrosionsfester Beschichtungen auf eisenhaltigen Gegenständen
US4401727A (en) * 1982-06-23 1983-08-30 Bethlehem Steel Corporation Ferrous product having an alloy coating thereon of Al-Zn-Mg-Si Alloy, and method
FR2548216B1 (fr) * 1983-06-28 1988-10-21 Fical Fils Cables Acier Lens Fil d'acier a revetements superposes resistant a la corrosion
FR2554831B1 (fr) * 1983-11-15 1993-08-13 Thomson Csf Procede de depot d'un revetement protecteur sur des pieces metalliques
EP0148740A1 (de) * 1983-12-22 1985-07-17 CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR RESEARCH IN DE METALLURGIE Association sans but lucratif Verfahren zum heissen Beschichten und Schmelzbad dafür
JPH01263255A (ja) * 1988-04-14 1989-10-19 Nippon Aen Kogyo Kk 高付着溶融アルミニウム−亜鉛合金めっき方法
CA1335867C (en) * 1988-09-02 1995-06-13 Verdun Hildreth Farnsworth Rare earth and aluminium containing galvanising bath
CA2024210A1 (en) * 1989-11-06 1991-05-07 William D. Guenther Method of treating a ferrous component for subsequent metallurgical bonding to cast aluminum
DE4111410C2 (de) * 1990-04-13 1998-02-05 Centre Rech Metallurgique Verfahren zum kontinuierlichen Tauchbeschichten von Stahlband
JPH07109556A (ja) * 1993-10-08 1995-04-25 Shinko Kosen Kogyo Kk 合金層被覆鋼線およびその製造方法
JP4136286B2 (ja) * 1999-08-09 2008-08-20 新日本製鐵株式会社 耐食性に優れたＺｎ−Ａｌ−Ｍｇ−Ｓｉ合金めっき鋼材およびその製造方法

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB287201A (en) * 1926-11-19 1928-03-19 Evan Arthur Atkins Improvements in and connected with the galvanizing or coating by dipping of steel
GB337399A (en) * 1929-07-29 1930-10-29 American Rolling Mill Co Coated metal bodies and process of producing same
US3343930A (en) * 1964-07-14 1967-09-26 Bethlehem Steel Corp Ferrous metal article coated with an aluminum zinc alloy
US3393089A (en) * 1964-07-14 1968-07-16 Bethlehem Steel Corp Method of forming improved zinc-aluminum coating on ferrous surfaces
GB1121548A (en) * 1964-10-28 1968-07-31 Trefilerie Et Cablerie De Bour Improvements in or relating to the continuous heat treatment and "hot dipping" of metal wire and apparatus therefor
FR2027888A1 (en) * 1969-01-08 1970-10-02 Inland Steel Co Ferrous sheet galvanised with zinc alloy
FR2093906A1 (de) * 1970-09-25 1972-02-04 Lysaght Ltd John
DE2146376A1 (en) * 1970-09-17 1972-03-30 Fredericia Galvaniseringsansta Hot galvanising - iron and steel articles by immersion in zinc and then in zinc-aluminium alloys
US3952120A (en) * 1974-05-31 1976-04-20 Bethlehem Steel Corporation Aluminum-zinc coated low-alloy ferrous product and method

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB876032A (en) * 1958-08-11 1961-08-30 British Non Ferrous Metals Res Improvements in or relating to the galvanizing of steel

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB287201A (en) * 1926-11-19 1928-03-19 Evan Arthur Atkins Improvements in and connected with the galvanizing or coating by dipping of steel
GB337399A (en) * 1929-07-29 1930-10-29 American Rolling Mill Co Coated metal bodies and process of producing same
US3343930A (en) * 1964-07-14 1967-09-26 Bethlehem Steel Corp Ferrous metal article coated with an aluminum zinc alloy
US3393089A (en) * 1964-07-14 1968-07-16 Bethlehem Steel Corp Method of forming improved zinc-aluminum coating on ferrous surfaces
GB1121548A (en) * 1964-10-28 1968-07-31 Trefilerie Et Cablerie De Bour Improvements in or relating to the continuous heat treatment and "hot dipping" of metal wire and apparatus therefor
FR2027888A1 (en) * 1969-01-08 1970-10-02 Inland Steel Co Ferrous sheet galvanised with zinc alloy
DE2146376A1 (en) * 1970-09-17 1972-03-30 Fredericia Galvaniseringsansta Hot galvanising - iron and steel articles by immersion in zinc and then in zinc-aluminium alloys
FR2093906A1 (de) * 1970-09-25 1972-02-04 Lysaght Ltd John
US3952120A (en) * 1974-05-31 1976-04-20 Bethlehem Steel Corporation Aluminum-zinc coated low-alloy ferrous product and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10003680A1 (de) * 2000-01-28 2001-08-09 Thyssenkrupp Stahl Ag Verfahren zum Herstellen eines mit einer Zinkbeschichtung versehenen Stahlbandes und zinkbeschichtetes Stahlband
DE10003680C2 (de) * 2000-01-28 2003-04-10 Thyssenkrupp Stahl Ag Verfahren zum Herstellen eines mit einer Zinkbeschichtung versehenen Stahlbandes und zinkbeschichtetes Stahlband

Also Published As

Publication number Publication date
EP0037143A1 (de) 1981-10-07
DE3169319D1 (en) 1985-04-25

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