DE533579C - Process for the production of a rust protection coating on iron and steel - Google Patents
Process for the production of a rust protection coating on iron and steelInfo
- Publication number
- DE533579C DE533579C DEA53844D DEA0053844D DE533579C DE 533579 C DE533579 C DE 533579C DE A53844 D DEA53844 D DE A53844D DE A0053844 D DEA0053844 D DE A0053844D DE 533579 C DE533579 C DE 533579C
- Authority
- DE
- Germany
- Prior art keywords
- iron
- cadmium
- steel
- production
- protection coating
- 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
Links
- 238000000576 coating method Methods 0.000 title claims description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims description 10
- 238000000034 method Methods 0.000 title claims description 10
- 239000011248 coating agent Substances 0.000 title claims description 6
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 title claims description 6
- 229910052742 iron Inorganic materials 0.000 title claims description 5
- 229910000831 Steel Inorganic materials 0.000 title claims description 4
- 239000010959 steel Substances 0.000 title claims description 4
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- 229910052793 cadmium Inorganic materials 0.000 claims description 8
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 8
- 239000011701 zinc Substances 0.000 claims description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 6
- 229910052725 zinc Inorganic materials 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 4
- 229910001297 Zn alloy Inorganic materials 0.000 claims description 3
- 238000007598 dipping method Methods 0.000 claims description 3
- 229910000925 Cd alloy Inorganic materials 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 206010039509 Scab Diseases 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- CEKJAYFBQARQNG-UHFFFAOYSA-N cadmium zinc Chemical compound [Zn].[Cd] CEKJAYFBQARQNG-UHFFFAOYSA-N 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 150000003751 zinc 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
- C23C2/04—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
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/36—Supports for the head or the back
- A47C7/40—Supports for the head or the back for the back
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- ing And Chemical Polishing (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Electroplating Methods And Accessories (AREA)
- Coating By Spraying Or Casting (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
- Coating With Molten Metal (AREA)
Description
Verfahren zur Herstellung eines Rostschutzüberzuges auf Eisen und Stahl Es ist bekannt, daß Eisen und Stahl sowohl durch Zink- wie durch Cadmiumüberzüge wirksam vor Rost geschützt werden können. Man hat auch schon Legierungen vorgeschlagen, die auf elektrolytischem Wege hergestellt werden können.Process for the production of a rust protection coating on iron and Steel It is known that iron and steel are coated with both zinc and cadmium can be effectively protected from rust. Alloys have also been proposed which can be produced electrolytically.
Gegenüber den elektrolytischen Methoden haben die auf thermischem Wege aufgebrachten Überzüge, insbesondere durch Eintauchen oder Spritzen, den Vorteil, daß die Überzüge homogener ausfallen, daß ferner die bekannten Nachteile der elektrolytischen Verfahren, wie mangelhafte Streuung, Notwendigkeit sauberster Oberflächen usw., in Fortfall kommen. Im Falle der Verzinkung ist es auch heute allgemeiner Stand der Technik, die Überzüge durch thermische Verfahren herzustellen. Das Zink hat aber den Nachteil, daß im Gebrauche, speziell durch atmosphärische Einwirkungen, Krusten aus basischen Zinksalzen entstehen, die ein weiteres Inlösunggehen des Überzuges bei fortschreitendem Angriff verhindern. Aber gerade auf dieser Lösung beruht seine rostschützende Wirkung gegenüber Eisen, die dann im Falle der Krustenbildung ausbleibt. Diesen Nachteil zeigen Überzüge von Cadmium nicht. Andererseits besitzt das Cadmium die unangenehme Eigenschaft, bei höheren Temperaturen, speziell auch in geschmolzenem Zustand, leicht zu oxydieren, wodurch es unmöglich wird, Überzüge mittels thermischer Verfahren, insbesondere mittels Eintauchen oder Spritzen, in einwandfreier Weise betriebsmäßig herzustellen. Erfindungsgemäß werden an Stelle reinen Cadmiums dessen Legierungen mit Zink in mittleren Konzentrationen von 2o bis 6o °/o Cadmium und entsprechend 8o bis 40 % Zink verwendet. Diese Legierungen haben vor dem reinen- Zink den Vorteil, daß sie keine Krustenbildung bei atmosphärischer Einwirkung zeigen, infolgedessen einen ungeschwächten Rostschutz bilden, andererseits haben sie vor dem Cadmium und dessen hochprozentigen Legierungen den Vorteil, daß sie das Aufbringen auf den vor Rost zu schützenden Gegenstand mittels thermischer Verfahren gestatten, da bei diesem nicht die Erscheinung einer starken Oxydation in geschmolzenem Zustand vorhanden ist. Überdies haben die Legierungen den wirtschaftlichen Vorteil des geringeren Preises infolge des geringeren Ca-dmiumgehalts gegenüber dem reinen Cadmium. Das Tauchen bzw. Spritzen von Cadmium-Zink-Legierungen ist auch vorteilhafter als das sogenannte Sheradisieren; wie es für Cadmium-Zink-Legierungen in der britischen Patentschrift 26z 5o2 beschrieben ist, da bei diesem Verfahren zunächst mehrere Arbeitsgänge erforderlich sind - nämlich erstens das Bestreichen der zu überziehenden Gegenstände mit .dem Metallpulver und zweitens das Erhitzen derselben - und da ferner bei diesem Verfahren notwendig ist, in Schutzgasen zu erwärmen, wenn man zu hochprozentigen (über 2o °1o) Cadmiumlegierungen übergehen will, andernfalls durch Oxydation keine gleichmäßig häftenden-Überzüge zu erlangen sind.Compared to the electrolytic methods, those on thermal By way of applied coatings, in particular by dipping or spraying, the advantage that the coatings are more homogeneous, that also the known disadvantages of electrolytic Procedures such as poor spreading, the need for the cleanest surfaces, etc., come in failure. In the case of galvanizing, it is still common today the technique of producing the coatings by thermal processes. The zinc has but the disadvantage that in use, especially by atmospheric influences, Crusts from basic zinc salts arise, which further dissolve the coating prevent as the attack progresses. But it is precisely on this solution that his is based rust-protecting effect against iron, which then fails in the case of crust formation. Coatings of cadmium do not show this disadvantage. On the other hand, it has cadmium the unpleasant property at higher temperatures, especially in melted Condition, easy to oxidize, which makes it impossible to apply thermal coatings Process, in particular by means of immersion or spraying, in an impeccable manner to produce operationally. According to the invention, instead of pure cadmium, its Alloys with zinc in medium concentrations of 2o to 6o% and cadmium correspondingly 8o to 40% zinc used. These alloys have before the pure- Zinc has the advantage that it does not show any crust formation when exposed to atmospheric agents, as a result, form an undeatened rust protection, on the other hand they intend to the cadmium and its high-percentage alloys have the advantage that they can be applied allow the object to be protected from rust by means of thermal processes, since this does not show the appearance of strong oxidation in the molten state is available. Moreover, the alloys have the economic advantage of the lower Price due to the lower Ca-dmium content compared to pure cadmium. That Dipping or spraying cadmium-zinc alloys is also more beneficial than that so-called sheradize; as is the case for cadmium-zinc alloys in the UK Patent specification 26z 5o2 is described, as initially several in this process Operations are required - namely, firstly, the coating to be coated Objects with .the metal powder and, secondly, the heating of the same - and there also In this process it is necessary to heat in protective gases if one is too strong (over 2o ° 1o) wants to pass cadmium alloys, otherwise by Oxidation no uniformly adhering coatings can be obtained.
Claims (1)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEA53844D DE533579C (en) | 1928-04-08 | 1928-04-08 | Process for the production of a rust protection coating on iron and steel |
| US352920A US1855377A (en) | 1928-04-08 | 1929-04-05 | Coating material for metal articles |
| BE559558A BE559558A (en) | 1928-04-08 | 1929-04-05 | |
| GB10836/29A GB309380A (en) | 1928-04-08 | 1929-04-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEA53844D DE533579C (en) | 1928-04-08 | 1928-04-08 | Process for the production of a rust protection coating on iron and steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE533579C true DE533579C (en) | 1931-09-16 |
Family
ID=6939192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEA53844D Expired DE533579C (en) | 1928-04-08 | 1928-04-08 | Process for the production of a rust protection coating on iron and steel |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1855377A (en) |
| BE (1) | BE559558A (en) |
| DE (1) | DE533579C (en) |
| GB (1) | GB309380A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3288529A (en) * | 1965-10-21 | 1966-11-29 | Steelcase Inc | Backrest construction for chairs and the like |
| US3295891A (en) * | 1965-11-10 | 1967-01-03 | Hamilton Cosco Inc | Furniture construction |
| DE2340605C3 (en) * | 1973-08-10 | 1985-07-11 | Siemens AG, 1000 Berlin und 8000 München | Dental chair with padded backrest |
-
1928
- 1928-04-08 DE DEA53844D patent/DE533579C/en not_active Expired
-
1929
- 1929-04-05 US US352920A patent/US1855377A/en not_active Expired - Lifetime
- 1929-04-05 BE BE559558A patent/BE559558A/fr unknown
- 1929-04-08 GB GB10836/29A patent/GB309380A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB309380A (en) | 1930-08-08 |
| BE559558A (en) | 1929-05-31 |
| US1855377A (en) | 1932-04-26 |
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