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First worldwide family litigation filedlitigationCriticalhttps://patents.darts-ip.com/?family=6499571&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=SI9420006(B)"Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from DE4334122Aexternal-prioritypatent/DE4334122C2/en
Application filed by Romabau-Holding AgfiledCriticalRomabau-Holding Ag
Publication of SI9420006ApublicationCriticalpatent/SI9420006A/en
Publication of SI9420006BpublicationCriticalpatent/SI9420006B/en
C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
C25D5/60—Electroplating characterised by the structure or texture of the layers
C25D5/625—Discontinuous layers, e.g. microcracked layers
B—PERFORMING OPERATIONS; TRANSPORTING
B08—CLEANING
B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
B08B17/00—Methods preventing fouling
B08B17/02—Preventing deposition of fouling or of dust
B08B17/06—Preventing deposition of fouling or of dust by giving articles subject to fouling a special shape or arrangement
B—PERFORMING OPERATIONS; TRANSPORTING
B08—CLEANING
B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
B08B17/00—Methods preventing fouling
B08B17/02—Preventing deposition of fouling or of dust
B08B17/06—Preventing deposition of fouling or of dust by giving articles subject to fouling a special shape or arrangement
B08B17/065—Preventing deposition of fouling or of dust by giving articles subject to fouling a special shape or arrangement the surface having a microscopic surface pattern to achieve the same effect as a lotus flower
C—CHEMISTRY; METALLURGY
C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
C25D5/18—Electroplating using modulated, pulsed or reversing current
C—CHEMISTRY; METALLURGY
C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
C25D5/60—Electroplating characterised by the structure or texture of the layers
C25D5/605—Surface topography of the layers, e.g. rough, dendritic or nodular layers
C—CHEMISTRY; METALLURGY
C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
C25D5/627—Electroplating characterised by the visual appearance of the layers, e.g. colour, brightness or mat appearance
Landscapes
Chemical & Material Sciences
(AREA)
Engineering & Computer Science
(AREA)
Chemical Kinetics & Catalysis
(AREA)
Electrochemistry
(AREA)
Materials Engineering
(AREA)
Metallurgy
(AREA)
Organic Chemistry
(AREA)
Electroplating Methods And Accessories
(AREA)
Application Of Or Painting With Fluid Materials
(AREA)
Electroplating And Plating Baths Therefor
(AREA)
Abstract
The invention relates to a galvanic coating process to provide a structured surface coating on a workpiece with an electrically conductive surface and a device for implementing the process. Here, the object to be coated is the cathode in a galvanic bath. The process current is raised in steps during a nucleation phase (10, 11) in which the stepwise increase in the current results in the formation of a deposit of individual or adjacent bodies on the surface of the object. The process current is then kept constant during a ramp working period (12), resulting in the growth of the previously produced nuclei or bodies. The process may be cyclically repeated.
Claims (11)
Patentni zahtevki 1. Postopek za elektrokemično (galvansko) nanašanje površinske prevleke na strojni del s postopkom nanašanja z enakomernim tokom, pri čemer se z vsaj enim začetnim impulzom električne napetosti in/ali električnega toka na ploskvi, ki jo je treba prevleči, dosežejo tvorjenja zametkov izločanega materiala in da se nato z vsaj eneim impulzom zaporedja povzroči rast zametkov izločanega materiala z nalaganjem nadaljnjega izločenega materiala, označen s tem, da se med fazo tvorjenja zametkov izvede zvišanje električne napetosti in/ali električnega toka v več stopnjah, leži čas med zvišanji med 0,1 s in 30 s, pri čemer se spremembe gostote toka izvedejo v stopnjah od 1 do 6 mA/cm1. 1 Postopek po zahtevku 1, označen s tem, da se stopnje zvišujejo z vsakokrat eno vnaprej določljivo spremembo gostote električnega toka od 1 do 6 mA/cm1 na stopnjo od začetne vrednosti na strukturirno gostoto (14, 24, 25) električnega toka, gre pri zvišanjih za zvišanja gostote toka in se na kopeli uporabijo stopnje v tolikšnem številu, dokler se na površini predmeta ne doseže strukturirana plast, ki obstoji iz nanosa iz posameznih drug ob drugem naloženih približno kroglastih ali dendritnih teles, in se nato v fazi rasti zametkov med vnaprej določljivim delovnim časom (12,16) v področju rampe uporabi procesni električni tok z gostoto električnega toka v območju od 80 % do 120 % strukturirne gostote električnega toka.A method for the electrochemical (electrochemical) application of a surface coating to a machine part by a uniform flow process, wherein at least one initial impulse of the electrical voltage and / or electric current on the surface to be coated achieves the formation of the gum and then with at least one impulse of the sequence, the growth of the embryos of the separated material is caused by the loading of the further eluted material, characterized in that an increase in the electrical voltage and / or the electric current in several stages is carried out during the germination phase, the time lies between the increases between 0.1 s and 30 s, whereby changes in current density are carried out in steps of 1 to 6 mA / cm1. A method according to claim 1, characterized in that the steps are increased with each one predetermined change in the electric current density from 1 to 6 mA / cm1 per step from the initial value to the structural density (14, 24, 25) of the electric current increases in current density increases, and the rates are applied on the bath in such a quantity as long as no structured layer is formed on the surface of the object, consisting of a coating from each of the adjacent balls or dendritic bodies loaded with one another, and then in the growth stage of the gaps between the advance Determined working time (12.16) in the ramp field uses a process electric current with an electric current density ranging from 80% to 120% of the structured electric current density.3. Postopek po zahtevku 1 ali 2, označen s tem, da trajanje posameznih stopenj znaša približno 7 sekund.Method according to claim 1 or 2, characterized in that the duration of the individual steps is approximately 7 seconds.4. Postopek po vsaj enem izmed od zahtevkov 1 do 3, označen s tem, da se gostota električnega toka zvišuje v 10 do 240 stopnjah.Method according to at least one of claims 1 to 3, characterized in that the electric current density is increased in 10 to 240 steps.5. Postopek po vsaj enem izmed od zahtevkov 1 do 4, označen s tem, da strukturirna gostota (14, 24, 25) električnega toka leži v območju 30 mA/cm2 do 180 mA/cm2.A method according to at least one of claims 1 to 4, characterized in that the structural density (14, 24, 25) of the electric current lies in the range of 30 mA / cm2 to 180 mA / cm2.6. Postopek po vsaj enem izmed od zahtevkov 1 do 5, označen s tem, da delovni čas (12, 16) v področju rampe znaša od 1 do 600 s, prednostno približno 30 s.Method according to at least one of claims 1 to 5, characterized in that the working time (12, 16) in the ramp region is from 1 to 600 s, preferably about 30 s.7. Postopek po vsaj enem izmed od zahtevkov 1 do 6, označen s tem, da se procesni električni tok po preteku delovnega časa v področju rampe zniža na končno vrednost (26).Method according to at least one of claims 1 to 6, characterized in that the process electric current is reduced to the final value (26) after the expiration of the working time in the ramp area.8. Postopek po zahtevku 7, označen s tem, da se procesni električni tok po preteku delovnega časa v področju rampe stopnjema zniža za vsakokrat vnaprej določeno spremembo -1 mA/cm2 do -8 mA/cm2 po stopnji na končno vrednost.The method according to claim 7, characterized in that the process current after reduction in operating time in the ramp-step region is lowered for each predetermined change of -1 mA / cm2 to -8 mA / cm2 per step per final value.9. Postopek za nanašanje površinske prevleke na električno prevodno površino predmeta, označen s tem, da se postopek po enem izmed zahtevkov 7 ali 8 ciklično ponovi dva do dvajsetkrat, pri čemer končna vrednost predhodnega cikla vsakič ustreza začetni vrednosti naslednjega cikla.A method for applying a surface coating to the electrically conductive surface of an object, characterized in that the process according to one of claims 7 or 8 is cyclically repeated two to twenty times, the end value of the preceding cycle corresponds each time to the initial value of the next cycle.10. Postopek po zahtevku 9, označen s tem, da so končne vrednosti (26) različno visoke.Method according to Claim 9, characterized in that the end values (26) are of varying degrees.11. Postopek po vsaj enem izmed od zahtevkov 1 do 10, označen s tem, da se pred tvorjenjem strukture uporabi impulz (8, 18) enakomernega toka z gostoto električnega toka od 15 do 60 mA/cm2, da se stvori temeljna plast ob enakomernem električnem toku.A method according to at least one of claims 1 to 10, characterized in that a steady current with a pulse current of 15 to 60 mA / cm2 is used before the structure is formed, in order to create a base layer with a uniform electric current.12. Uporaba postopka po vsaj enem izmed od zahtevkov 1 do 11, označena s tem, da se uporablja za tvorjenje strukture površine valja za mazivne depoje za sprejem maziv, za naravnavanje določenih stopenj odbojnosti pri površinah za optične, medicinske priprave in za funkcionalne in dekorativne uporabe v industriji pohištva in sanitarij, za tvorjenje površin z določeno hrapavostjo v izdelkih grafične industrije, za tvorjenje strukturiranih površin pri orodjih.Use of the method according to at least one of claims 1 to 11, characterized in that it is used to form a cylinder surface structure for lubricating reservoirs for the reception of lubricants, to adjust certain degrees of reflectivity in surfaces for optical, medical devices, and for functional and decorative use in the furniture and sanitary industry, to create surfaces with a certain roughness in the graphics industry products, to create structured surfaces in tools.
SI9420006A1993-10-071994-10-01Process for the galvanic application of a surface coating
SI9420006B
(en)
Production of optionally coated structurized hard chrome layer, used e.g. for decoration, protection or functional coating on printing roller or stamping, embossing or deep drawing tool uses aliphatic sulfonic acid in acid plating bath
Method for treating surface of die by discharge, method for producing electrode for die discharge surface treatment, and electrode for die discharge surface treatment