SE503304C2 - Method of surface treatment of metal objects - Google Patents
Method of surface treatment of metal objectsInfo
- Publication number
- SE503304C2 SE503304C2 SE9402515A SE9402515A SE503304C2 SE 503304 C2 SE503304 C2 SE 503304C2 SE 9402515 A SE9402515 A SE 9402515A SE 9402515 A SE9402515 A SE 9402515A SE 503304 C2 SE503304 C2 SE 503304C2
- Authority
- SE
- Sweden
- Prior art keywords
- metal
- layer
- coating
- coating layer
- application
- Prior art date
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 28
- 239000002184 metal Substances 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000004381 surface treatment Methods 0.000 title claims abstract description 10
- 239000011247 coating layer Substances 0.000 claims abstract description 13
- 239000010410 layer Substances 0.000 claims description 12
- 238000000576 coating method Methods 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000007598 dipping method Methods 0.000 claims description 6
- 238000004532 chromating Methods 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000005422 blasting Methods 0.000 claims description 2
- 239000003973 paint Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 239000002335 surface treatment layer Substances 0.000 claims 1
- 238000003754 machining Methods 0.000 abstract description 4
- 238000001035 drying Methods 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 2
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 238000009996 mechanical pre-treatment Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 239000002345 surface coating layer Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/32—Processes for applying liquids or other fluent materials using means for protecting parts of a surface not to be coated, e.g. using stencils, resists
- B05D1/322—Removable films used as masks
Landscapes
- ing And Chemical Polishing (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
Description
15 20 25 30 35 503 304 2 kvalité mellan ytor som skall ges olika ytbehandling, utan omfattande efterarbete. 15 20 25 30 35 503 304 2 quality between surfaces to be given different surface treatment, without extensive finishing work.
Nämnda ändamål uppnås medelst ett förfarande enligt föreliggande uppfinning, vars kännetecken framgår av efterföljande patentkrav 1.Said object is achieved by means of a method according to the present invention, the features of which appear from the appended claim 1.
FIGURBESKRIVNING2 Uppfinningen skall i det följande närmare beskrivas med ett utföringsexempel under hänvisning till bifogade ritningar, på vilka Fig. 1 och 2 visar ett exempel på tillämpningen av för- farandet enligt uppfinningen vid ytbehand- ling av två delar av ett föremål.DESCRIPTION OF THE DRAWINGS The invention will be described in more detail below with an exemplary embodiment with reference to the accompanying drawings, in which Figs. 1 and 2 show an example of the application of the method according to the invention in surface treatment of two parts of an object.
FÖREDRAGEN UTFöRINGsFoRM: Fig. 1 och 2 visar delar 1, 2 av ett föremål av gjutgods, exempelvis aluminium, vilka skall monteras samman för att i den färdiga produkten bilda en enhet. Delarna 1, 2 uppvisar härvid dels ytor 3, 4, 5, som efter slutförd ytbe- handling skall förbli ytbelagda med målningsskikt och dels ytor 6, 7 som bildar monteringsytor avsedda att anslutas mot varandra i den färdiga produktens monterade skick.PREFERRED EMBODIMENT: Figs. 1 and 2 show parts 1, 2 of an object of castings, for example aluminum, which are to be assembled together to form a unit in the finished product. The parts 1, 2 have surfaces 3, 4, 5 which, after completion of the surface treatment, must remain coated with paint layers and surfaces 6, 7 which form mounting surfaces intended to be connected to each other in the mounted condition of the finished product.
De ytor som i det färdiga skicket skall förbli ytbelagda utgöres dels av yttre ytor 3, 5, som skall uppfylla höga krav på dekorativ finish, korrosionsskyddande egenskaper samt vara lätt rengörbara och dels av mer eller mindre ej utifrån synliga ytor 4, i det visade exemplet ett hålrum, t.ex. i form av en borrning e. dyl., som i första hand skall uppfylla höga krav på korrosionsskyddande egenskaper och lätt rengörbarhet.The surfaces that are to remain coated in the finished condition consist partly of outer surfaces 3, 5, which must meet high requirements for decorative finish, corrosion-protective properties and be easily cleanable and partly of more or less non-visible surfaces 4, in the example shown a cavity, e.g. in the form of a bore, etc., which in the first instance must meet high requirements for corrosion-protective properties and easy cleanability.
För att uppnå en höggradigt jämn och maximalt täckande ytbeläggning av såväl yttre ytor 3, 5 som hålrum 4 utnytt-. 10 15 20 25 30 35 4503 304 3 jas enligt ett fördelaktigt utföringsexempel ytbeläggning genom doppning av föremålets delar, 1, 2 i pulverlack, som kan appliceras i relativt tjocka skikt och möjliggör en god arbetsmiljö. Pulverlacker kräver dock ett väl genomfört förarbete, företrädesvis genom att samtliga metallytor 8-12 av föremålets delar 1, 2 efter en mekanisk förbehandling av metallytorna för att avlägsna rost och andra ytförore- ningar, utsättes för en kemisk ytomvandling genom applice- ring av ett oorganiskt ytomvandlingsmedel av kromat- eller fosfattyp.In order to achieve a highly even and maximally covering surface coating of both outer surfaces 3, 5 and cavities 4 are used. According to an advantageous embodiment, surface coating by dipping the parts of the object, 1, 2 in powder coating, which can be applied in relatively thick layers and enables a good working environment. Powder coatings, however, require a well-prepared preparation, preferably by subjecting all metal surfaces 8-12 of the object parts 1, 2 after a mechanical pre-treatment of the metal surfaces to remove rust and other surface contaminants, by applying an inorganic surface. chromate or phosphate type surface converters.
Efter appliceringen av ytomvandlingsmedlet, vilket ex- empelvis sker genom doppning, varigenom samtliga metallytor 8-12 av föremålens delar 1, 2 behandlas, närmare bestämt såväl de metallytor 8, 9, som i den färdiga produkten skall vara utåt vända, som de metallytor 10, som avgränsar hålrum 4, samt de metallytor 11, 12 som skall bilda monteringsytor 6, 7 i den färdiga produkten.After the application of the surface conversion agent, which takes place, for example, by dipping, whereby all metal surfaces 8-12 of the parts 1, 2 of the objects are treated, more specifically both the metal surfaces 8, 9, which in the finished product are to be turned outwards, as the metal surfaces 10 , which delimits cavities 4, as well as the metal surfaces 11, 12 which are to form mounting surfaces 6, 7 in the finished product.
Samtliga med ytomvandlingsmedel behandlade ytor förses i ett separat appliceringssteg med ett grundskyddsmedel, s.k. primer, vilket lämpligen sker genom doppapplicering till ett eller flera primerskikt 13, 14.All surfaces treated with surface conversion agents are provided in a separate application step with a basic preservative, so-called primer, which is conveniently done by dipping application to one or more primer layers 13, 14.
Efter applicering av primerskikten och efterföljande torkning, appliceras åtminstone ett skikt av pulverlack 15, 16 över samma ytor som kromaterats och grundats med primer, vilket likaså med fördel sker genom doppning varigenom samtliga för doppningen utsatta ytor, inklusive hålrums- ytor, erhåller en god täckning med önskad skikttjocklek.After application of the primer layers and subsequent drying, at least one layer of powder coating 15, 16 is applied over the same surfaces as chromated and primed with primer, which is also advantageously done by dipping, whereby all surfaces exposed to dipping, including cavity surfaces, receive good coverage. with the desired layer thickness.
Den applicerade pulverlacken ugnshärdas, varefter av- svalning sker.The applied powder coating is oven cured, after which cooling takes place.
Enligt uppfinningen sker ej någon maskering av de ytor som i slutligt skick ej skall vara ytbelagda medelst primer 10 15 20 25 30 35 503 304 4 eller lackskikt, utan dessa ytor, dvs monteringsytorna ll, 12 utsättes efter slutförande av ovan beskrivna skiktappli- cering för mekanisk bearbetning för att avlägsna samtliga beläggningsskikt på monteringsytorna ned till ren metallyta 11, 12. Bearbetningen sker exempelvis genom slipning.According to the invention, no masking of the surfaces which in the final condition are not to be coated by means of primer or varnish layer takes place, but these surfaces, i.e. the mounting surfaces 11, 12 are exposed after completion of the above-described layer application for mechanical machining to remove all coating layers on the mounting surfaces down to clean metal surface 11, 12. The machining takes place, for example, by grinding.
Efter den mekaniska bearbetningen utsättes monteringsytorna 11, 12 för en förnyad ytomvandling medelst oorganiskt ytomvandlingsmedel av kromat- eller fosfattyp för att ge ytorna ett kemiskt korrosionsskydd. Eftersom ytorna ej utsattes för mekanisk påverkan, såsom slag etc., erfordras ej primer eller målning, som ej kan uppvisa den ytfinhet, som erfordras i monteringsytor, där i många fall en tätande anliggning, eventuellt med mellanliggande packning, erfordras. Exempel på behov av tätande anliggning är anliggning mellan kåpdelar, motordelar eller dylikt.After the mechanical processing, the mounting surfaces 11, 12 are subjected to a renewed surface conversion by means of inorganic surface conversion agent of chromate or phosphate type in order to give the surfaces a chemical corrosion protection. Since the surfaces are not subjected to mechanical action, such as blows, etc., no primer or painting is required, which cannot exhibit the surface finish required in mounting surfaces, where in many cases a sealing contact, possibly with intermediate gasket, is required. Examples of the need for a sealing abutment are abutment between housing parts, engine parts or the like.
Exempel: Sammanfattningsvis skall nedan redogöras för de olika stegen i ett fördelaktigt utföringsexempel med utnyttjande av ytbehandlingsförfarandet enligt föreliggande uppfinning: 1. Blästring med Algh. 0,2-1,2 mm. 2. Tvättning med vätska. 3. Ytomvandling, exempelvis kromatering. 4. Tvättning med vätska. 5. Torkning. 6. Kromatering. 7. Applicering av grundfärg 10-100 pm. 10 15 20 503 304 8. Torkning. 9. Pulverlackering. 50-800 um i ett lager. 10. Ugnshärdning alt. lufthärdning. 11. Eventuell avsvalning. 12. Mekanisk bearbetning, t.ex. fräsning av vissa ytor ned till metallrent. 13. Förnyad kromatering av bearbetade ytor.Example: In summary, the various steps will be described below in an advantageous embodiment using the surface treatment method according to the present invention: 1. Blasting with Algh. 0.2-1.2 mm. 2. Washing with liquid. 3. Surface transformation, for example chromating. 4. Washing with liquid. 5. Drying. 6. Chromating. 7. Application of primer 10-100 pm. 10 15 20 503 304 8. Drying. 9. Powder coating. 50-800 μm in one layer. 10. Oven hardening alt. air curing. 11. Any cooling. 12. Mechanical processing, e.g. milling of certain surfaces down to metal pure. 13. Renewed chromating of machined surfaces.
Uppfinningen är ej begränsad till ovan beskrivna och på ritningen visade utföringsexempel, utan kan varieras inom ramen för efterföljande patentkrav. Exempelvis kan ett eller flera av ytbehandlingsstegen utgå, varvid dock minst ett. ytbeläggningsskikt appliceras på åtminstone två av föremålets ytor och beläggningsskiktet i ett efterföljande steg avlägsnas från den ena ytan genom mekanisk bearbet- ning.The invention is not limited to the embodiments described above and shown in the drawing, but can be varied within the scope of the appended claims. For example, one or more of the surface treatment steps may be omitted, however, at least one. surface coating layers are applied to at least two of the surfaces of the article and the coating layer in a subsequent step is removed from one surface by mechanical machining.
Claims (6)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9402515A SE503304C2 (en) | 1994-07-19 | 1994-07-19 | Method of surface treatment of metal objects |
| PCT/SE1995/000866 WO1996002330A1 (en) | 1994-07-19 | 1995-07-18 | Method for surface treatment of metal objects |
| AU30899/95A AU3089995A (en) | 1994-07-19 | 1995-07-18 | Method for surface treatment of metal objects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9402515A SE503304C2 (en) | 1994-07-19 | 1994-07-19 | Method of surface treatment of metal objects |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| SE9402515D0 SE9402515D0 (en) | 1994-07-19 |
| SE9402515L SE9402515L (en) | 1996-01-20 |
| SE503304C2 true SE503304C2 (en) | 1996-05-13 |
Family
ID=20394757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE9402515A SE503304C2 (en) | 1994-07-19 | 1994-07-19 | Method of surface treatment of metal objects |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU3089995A (en) |
| SE (1) | SE503304C2 (en) |
| WO (1) | WO1996002330A1 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60227868A (en) * | 1984-04-27 | 1985-11-13 | Honda Motor Co Ltd | Partial painting method of resin molded article |
| KR900003426B1 (en) * | 1985-10-26 | 1990-05-18 | 미쯔이도오아쯔가가꾸 가부시기가이샤 | Strippable coating film and coating process using it |
| US4798027A (en) * | 1987-09-01 | 1989-01-17 | Niigata Engineering Co., Ltd. | Method of and apparatus for sandblasting workpiece |
-
1994
- 1994-07-19 SE SE9402515A patent/SE503304C2/en not_active IP Right Cessation
-
1995
- 1995-07-18 AU AU30899/95A patent/AU3089995A/en not_active Abandoned
- 1995-07-18 WO PCT/SE1995/000866 patent/WO1996002330A1/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| SE9402515L (en) | 1996-01-20 |
| AU3089995A (en) | 1996-02-16 |
| SE9402515D0 (en) | 1994-07-19 |
| WO1996002330A1 (en) | 1996-02-01 |
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| Date | Code | Title | Description |
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| NUG | Patent has lapsed |
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