CH285786A - Process for hot-dip galvanizing of iron or steel sheets. - Google Patents
Process for hot-dip galvanizing of iron or steel sheets.Info
- Publication number
- CH285786A CH285786A CH285786DA CH285786A CH 285786 A CH285786 A CH 285786A CH 285786D A CH285786D A CH 285786DA CH 285786 A CH285786 A CH 285786A
- Authority
- CH
- Switzerland
- Prior art keywords
- rollers
- zinc
- hot
- coated
- dip galvanizing
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 25
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims description 14
- 238000005246 galvanizing Methods 0.000 title claims description 8
- 229910000831 Steel Inorganic materials 0.000 title claims description 7
- 229910052742 iron Inorganic materials 0.000 title claims description 7
- 239000010959 steel Substances 0.000 title claims description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 11
- 229910052725 zinc Inorganic materials 0.000 claims description 11
- 239000011701 zinc Substances 0.000 claims description 11
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 6
- 229910000611 Zinc aluminium Inorganic materials 0.000 claims description 4
- HXFVOUUOTHJFPX-UHFFFAOYSA-N alumane;zinc Chemical compound [AlH3].[Zn] HXFVOUUOTHJFPX-UHFFFAOYSA-N 0.000 claims description 4
- 230000004907 flux Effects 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 2
- 229910000756 V alloy Inorganic materials 0.000 claims description 2
- XEPNJJFNSJKTSO-UHFFFAOYSA-N azanium;zinc;chloride Chemical compound [NH4+].[Cl-].[Zn] XEPNJJFNSJKTSO-UHFFFAOYSA-N 0.000 claims description 2
- 210000003298 dental enamel Anatomy 0.000 claims description 2
- JQJCSZOEVBFDKO-UHFFFAOYSA-N lead zinc Chemical compound [Zn].[Pb] JQJCSZOEVBFDKO-UHFFFAOYSA-N 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 2
- 229910052720 vanadium Inorganic materials 0.000 claims description 2
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 2
- 150000003841 chloride salts Chemical class 0.000 claims 2
- 239000007769 metal material Substances 0.000 claims 2
- 239000011248 coating agent Substances 0.000 claims 1
- 150000002222 fluorine compounds Chemical class 0.000 claims 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- UMNYVEBMAZPMAK-UHFFFAOYSA-M N.[Cl-].[Zn+2] Chemical class N.[Cl-].[Zn+2] UMNYVEBMAZPMAK-UHFFFAOYSA-M 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 229910001182 Mo alloy Inorganic materials 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000009500 colour coating Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
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
- C23C2/003—Apparatus
- C23C2/0035—Means for continuously moving substrate through, into or out of the bath
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)
Description
<B>Verfahren zur</B> Feuerverzinkung <B>von Eisen. oder</B> Stahlblechen. Bei der Feuerverzinkung von Eisen- oder Stahlblechen, insbesondere in Bandform, wer den mechanisch betriebene Vorrichtungen ver wendet, welche die verzinkten Bleche bzw. Bänder vermittels Eisen- oder Stahlwalzen, die zum Teil im flüssigen Zink bewegt werden, aus dem Zinkbade herausziehen. Die Ober fläche dieser Walzen ist. verzinkt und wird mit. Salmiak und Ammoniumchlorzinksalzen von Oxyden gereinigt.
Auf der Oberfläche der Walzen, insbesondere bei Verwendung von Zink-Aluminium-Legierungen, bilden sieh Me tallprodukte, welche störend wirken und dureh Salmiak und Ammoniumchlorzinksalze nielit beseitigt werden.
Diese Störungen kön nen erfindungsgemäss auf die Weise ausge schaltet werden, dass die Oberfläche der Wal zen, welehe die l@:isen- oder Stahlbleche aus dem Zinkbade herausziehen, aus einem Mate rial besteht, welches sich mit Zink und Zink legierungen bei der Veminkungstemperatur nicht verbindet und demnach die Zinkschmelze keinen f\berzug auf der Walzenoberfläche zu bilden vermag.
Zu diesem Zwecke können die Walzen, beziehungsweise ihre Oberflächen, aus Aeliat und andern Mineralien, kerami schen Massen, feuerfesten Materialien, Emails, Glasuren, Metallen beziehungsweise Metall- legierungen, z. B. Molybdän oder Molybdän- legierun;en, Vanadium oder Vanadiumlegie- rungen usw., hergestellt werden. Die Walzen können aus einzelnen Segmenten und Ringen gebildet. werden, und ihre Oberfläche kann mit zweckmässigen Rillen versehen und poliert sein.
Bei der Herstellung von falzbaren Zink überzügen auf Blechen beziehungsweise Bän dern mittels Zink-Aluminium-Legierungen wird die Oberfläche .der Walzen zweckmässi- gerweise durch ein Flussmittel gereinigt, wel ches Fluoride oder Alkaliehloride, eventuell auch beide dieser Salzarten enthält. In son stigen Fällen kann zur Reinigung der Walzen oberfläche Salmiak und Ammonium-Zinkchlo- rid verwendet werden.
Bei der Anwendung des Blei-Zink-Verfali- rens, nach welchem das Bleibad zum Teil oder gänzlich mit einer Zinkschicht bedeckt ist, sowie bei der Herstellung von. falzbaren Zink überzügen mittels Zink-Aluminium-Legierun- #zen ist das erfindungsgemässe Verfahren be sonders vorteilhaft.
<B> Process for </B> hot-dip galvanizing <B> iron. or </B> steel sheets. When hot-dip galvanizing iron or steel sheets, especially in strip form, whoever uses the mechanically operated devices that pull the galvanized sheets or strips out of the zinc bath by means of iron or steel rollers, some of which are moved in the liquid zinc. The upper surface of these rollers is. galvanized and comes with. Oxides are removed from ammonia and ammonium chlorozinc salts.
On the surface of the rollers, especially when using zinc-aluminum alloys, metal products form, which have a disruptive effect and are not eliminated by ammonia and ammonium chlorozinc salts.
According to the invention, these disturbances can be switched off in such a way that the surface of the rollers, which pull the iron or steel sheets out of the zinc bath, consists of a material which does not mix with zinc and zinc alloys at the galvanizing temperature connects and therefore the zinc melt is unable to form a color coating on the roll surface.
For this purpose, the rollers, or their surfaces, can be made from Aeliat and other minerals, ceramic masses, refractory materials, enamels, glazes, metals or metal alloys, e.g. B. molybdenum or molybdenum alloys, vanadium or vanadium alloys, etc., can be produced. The rollers can be formed from individual segments and rings. and their surface can be grooved and polished appropriately.
In the production of foldable zinc coatings on sheets or strips by means of zinc-aluminum alloys, the surface of the rollers is expediently cleaned with a flux which contains fluoride or alkali chloride, possibly both of these types of salt. In other cases, salmia and ammonium zinc chloride can be used to clean the roller surface.
When using the lead-zinc process, according to which the lead bath is partially or completely covered with a zinc layer, as well as when manufacturing. Foldable zinc coatings by means of zinc-aluminum alloy rolls, the method according to the invention is particularly advantageous.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH285786T | 1950-06-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH285786A true CH285786A (en) | 1952-09-30 |
Family
ID=4485088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH285786D CH285786A (en) | 1950-06-16 | 1950-06-16 | Process for hot-dip galvanizing of iron or steel sheets. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH285786A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1187453B (en) * | 1956-11-22 | 1965-02-18 | Rasselstein Ag | Process for the hot-melt metallization of metal strips |
| CN113970069A (en) * | 2021-10-20 | 2022-01-25 | 北京京诚泽宇能源环保工程技术有限公司 | Cold rolling workshop nitrogen gas temporary feeding device |
-
1950
- 1950-06-16 CH CH285786D patent/CH285786A/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1187453B (en) * | 1956-11-22 | 1965-02-18 | Rasselstein Ag | Process for the hot-melt metallization of metal strips |
| CN113970069A (en) * | 2021-10-20 | 2022-01-25 | 北京京诚泽宇能源环保工程技术有限公司 | Cold rolling workshop nitrogen gas temporary feeding device |
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