AT41298B - Process for cleaning metal objects and for subsequent coating with metals by electrolytic means. - Google Patents
Process for cleaning metal objects and for subsequent coating with metals by electrolytic means.Info
- Publication number
- AT41298B AT41298B AT41298DA AT41298B AT 41298 B AT41298 B AT 41298B AT 41298D A AT41298D A AT 41298DA AT 41298 B AT41298 B AT 41298B
- Authority
- AT
- Austria
- Prior art keywords
- metal objects
- metals
- subsequent coating
- alkali
- electrolytic means
- Prior art date
Links
- 229910052751 metal Inorganic materials 0.000 title claims description 13
- 239000002184 metal Substances 0.000 title claims description 13
- 238000000034 method Methods 0.000 title claims description 7
- 238000004140 cleaning Methods 0.000 title claims description 5
- 239000011248 coating agent Substances 0.000 title claims description 3
- 238000000576 coating method Methods 0.000 title claims description 3
- 150000002739 metals Chemical class 0.000 title claims description 3
- 239000003792 electrolyte Substances 0.000 claims description 5
- 239000003513 alkali Substances 0.000 claims description 4
- 239000000654 additive Substances 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 235000011180 diphosphates Nutrition 0.000 claims description 2
- 238000001556 precipitation Methods 0.000 claims description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims 2
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 claims 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 claims 2
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 claims 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims 1
- 229910019142 PO4 Inorganic materials 0.000 claims 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims 1
- 150000001447 alkali salts Chemical class 0.000 claims 1
- 239000012670 alkaline solution Substances 0.000 claims 1
- XPPKVPWEQAFLFU-UHFFFAOYSA-J diphosphate(4-) Chemical compound [O-]P([O-])(=O)OP([O-])([O-])=O XPPKVPWEQAFLFU-UHFFFAOYSA-J 0.000 claims 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims 1
- 239000010452 phosphate Substances 0.000 claims 1
- 229940072033 potash Drugs 0.000 claims 1
- 235000015320 potassium carbonate Nutrition 0.000 claims 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims 1
- 229910052783 alkali metal Inorganic materials 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
- -1 alkali metal pyrophosphate Chemical class 0.000 description 2
- 150000002825 nitriles Chemical class 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910000318 alkali metal phosphate Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 150000003841 chloride salts Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000004694 iodide salts Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Landscapes
- Electrolytic Production Of Metals (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur Reinigung von Metallgegenständen und zum darauffolgenden Überziehen mit Metallen auf elektrolytischem Wege.
Bekanntlich ist es notwendig, Metallgegenstände, welche im elektrolytischen Bade Metallniederschläge erhalten sollen, vorher von Fett und Unreinlichkeiten zu befreien. die sich auf ihnen infolge der vorhergehenden Stadien der Fabrikation finden. Es handelt sich also um zwei hintereinander folgende, von einander ganz unterschiedliche Massnahmen, von denen die erste u. z. die Reinigung sehr viel Arbeit und Sorgfalt in Anspruch nimmt.
Im Nachstehenden ist ganz allgemein ein Verfahren beschrieben. welches ermöglicht, beide Vorgänge gleichzeitig vorzunehmen, unabhängig von dem Metall oder der Legierung, deren Niederschlag gewünscht wird, sei es Silber, Zinn, Kupfer, Zink, Nickel, Messing etc.
Das Verfahren besteht darin, dass ein Bad angewendet wird, in welchem die Anode aus
EMI1.1
Cyanide sind aber nicht die einzigen Körper, die man als Zusatz zum Elektrolyten wählen kann, auch andere Alkalisaize sind zulässig, wie Chloride. Jodide u. s. w. In diesen Falten muss man aber dem Elektrolyten noch ein geeignetes Lösemittel, wie z. B. Alkalisulfide oder -hyposulfite zufügen, Die letzteren Zusätze können auch bei Anwendung von Cyaniden gemacht werden. Endlich kann das gleiche Resultat erzielt werden, wenn man ein Alkaliphosphat oder ein -pyrophosphat mit oder ohne Zusatz von Alkalisulfiten oder -hyposulfiten verwendet.
Der Durchgang des Stromes in einen solchen Elektrolvten bewirkt zunächst die vollkommene Entfettung der als Kathode dienenden Metallgegenstände und erzielt durch den Angriff der Anode gleichzeitig den zur Bildung des metallischen Niederschlages auf den Metallgegenständen not-
EMI1.2
Zur elektrolytischen Reinigung sind zwar alkalische Bäder schon vorgeschlagen worden ; man hat aber dabei mit unlöslichen Anoden gearbeitet und den elektrolytischen Niederschlag in einem zweiten besonderen Bade ausgeführt.
<Desc / Clms Page number 1>
Process for cleaning metal objects and for subsequent coating with metals by electrolytic means.
It is known that metal objects which are to receive metal deposits in the electrolytic bath must be freed from grease and impurities beforehand. found on them as a result of the preceding stages of manufacture. It is therefore a question of two successive, completely different measures, of which the first u. z. cleaning takes a lot of work and care.
A method is described in general terms below. which enables both processes to be carried out at the same time, regardless of the metal or alloy whose deposit is desired, be it silver, tin, copper, zinc, nickel, brass, etc.
The process consists in applying a bath in which the anode is made
EMI1.1
However, cyanides are not the only substances that can be selected as an additive to the electrolyte; other alkaline values are also permitted, such as chlorides. Iodides and s. w. In these folds you have to add a suitable solvent to the electrolyte, such as B. add alkali sulfides or hyposulfites, the latter additions can also be made when using cyanides. Finally, the same result can be achieved if an alkali metal phosphate or an alkali metal pyrophosphate is used with or without the addition of alkali metal sulfites or alkali metal hyposulfites.
The passage of the current in such an electrolyte first of all causes the complete degreasing of the metal objects serving as cathode and at the same time achieves the necessary for the formation of the metallic deposit on the metal objects by attacking the anode.
EMI1.2
Alkaline baths have already been proposed for electrolytic cleaning; but one worked with insoluble anodes and carried out the electrolytic precipitation in a second special bath.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT41298T | 1907-12-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT41298B true AT41298B (en) | 1910-03-10 |
Family
ID=3560042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT41298D AT41298B (en) | 1907-12-26 | 1907-12-26 | Process for cleaning metal objects and for subsequent coating with metals by electrolytic means. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT41298B (en) |
-
1907
- 1907-12-26 AT AT41298D patent/AT41298B/en active
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