Gardobond X4707 - Touch Coating

1 Gardobond X4707 Chrome-free Pretreatmentfor Aluminumand MagnesiumAluminumandmagnesium are coated with organic coatings for decorative purposesand toimprove corrosion painting,it is always necessarytopretreat the includes cleaningandpickling before the applicationofthe conversion there is much interestintitaniumandzirconium chemistries for chrome-free conversion X4707currentlyhasapproval forthebatch pretreatmentof Bauteilen (GSB int.) for powder paint (Registration number304a). Gardobond X4707 Recommended pretreatment Process(Al) AlkalineCleanerRinseDIWater RinseDIWater RinseDryPicklingGB X4707 Recommended CleaningandPickling ProductsCleanerApplicationForm Pickling EffectGardocleanT 5375 Immersion, Powder Littleemulsifying GardocleanT 5374 Immersion.

2 Oil-splittingPowderLittleGardoclean371 SprayPowderNoneGardocleanS 5201 SprayLiquidVery littleGardocleanS 5180 Spray/immersionLiquidModerateGardoclean S 5165 Spray/immersionLiquidStrongGardoclean S5500 SprayLiquidNoneGardoclean T5500 ImmersionLiquidNoneAlkaline PicklingApplicationForm Pickling EffectAntoxVP 10025 ImmersionPowderVery strongGardoclean5160 Spray/ImmersionLiquidStrong Gardoclean1700 ImmersionPowderVery StrongGardobond X4707 Recommended pretreatment Process(Al) Alkaline CleanerRinseDIWater RinseDIWater RinseDryPicklingGB X4707 Recommended PicklingProductsAcid PicklingApplicationFormPickling EffectGardoclean450/1 Spray Liquid ModerateGardacidP4304 ImmersionPowderModerateGardacidP4345 ImmersionLiquidStrongGardocleanP4324 SprayPowderModerateBathMake-up:10.

3 70 g/lBath 30 CTreatment Time:30 .. 120spH-value:2,5 .. 3,5 Gardobond X4707 Recommended pretreatment Process(Mg) Alkaline CleanerRinseDIWater RinseDIWater RinseDryPickleGB X4707 Recommended CleaningandPickling ProductsCleanerApplicationFormPickling EffectGardocleanT 5374immersionPowdermoderate(30 g/l / 70 C / 5 min )GardocleanS 5180 sprayorLiquid (builder)moderate(15 g/l / 60 C / 2 min )immersionsurfactand requestedGardocleanS5086sprayPowdermoder ate(5-10g/l / 60 C /approx1 min)Acid PicklingApplicationFormPickling EffectGardoclean450/1spray Liquid moderate tostrong(5-10 g/l / 50 C min)

4 GardocleanT5491immersionLiquidmoderate(5 -10 g/l / 50 C min) Gardobond X4707 Recommended pretreatment Process(Mg) Alkaline CleanerRinseDIWater RinseDIWater RinseDryPickleGB X4707 Recommended CleaningandPickling ProductsBathMake-up:10 .. 70 kg/m Temperature 30 CTreating-time:30 .. 120spH-value:2,5 .. 2, ,0 (+ GN D6800/1M) Gardobond X4707 Corrosionand PaintAdhesion ResultsSubstrateESS - testKK - TestSFWF iliformAlMg1 / AlMgSi0,51000 h1000 h30 hDIN 50021 DIN 50017 DIN 50018EN 3665 Demand GSBundercreepageundercreepageundercreepa gefilament lengthmax. 1 mmmax.

5 1 mmmax. 1 mmmax. 2 mmGB X4707 < 1mm< 1 mm0 mm<= 1,5 mmCoating:PowderPaintCorro-Coat,Series12 87 Cleaner: GC T5374 Alkaline Pickling: GC S5160 Acid Pickling: GC 450 AA 6016240 h1000 h1000 hDIN 50021EN 3665EN 3665undercreepagefilament legthfilament lengthYellow ChromateU < 1U = 4,0 - 4,3U = 1,5 - 1,8 Green ChromateU < 1U = 4,5 - 5,0U = 2,0 - 2,3 PhosphateU 1-1,5U = 1,8 - 2,3U = 1,5 - 1,8GB X4707U < 1U = 2,0 - 2,5U = 1,5 - 1,8vertical scratchhorizontal scratchCoating: CathodicE-coat+ Filler/ Top coatCleaner: GC S5160 Acid pickling: GC 450 MagnesiumSubstratSS - testVDA 621-415 VDA 621-415AM 501000 h3 cycles3 cyclesDIN 50021(LPV 90)stone chippingundercreepageundercreepagepaint lossYellow ChromateU < 1U < 110 - 15%GB X4707U = 1U < 1 mm7 - 10% Coating : CathodicE-coatCleaner: GC T5374 Acid pickling: GC 450 Gardobond X4707 Adhesion bondingon AluminumsubstrateunagedSWAATV olvo TropicalAlMgSi0,51000 h12 weeksASTM G85-85tensile strengthtensile strengthtensile strength(kN)(kN)(kN)Yellow Chromate16,515,516,0GB X470722,521,022,0 Adhesive.

6 Betamate 4600 (Gurrit Essex)CoatingAnalysisThe conversion Coating istransparent andthe Coating weight cannot be gravimetrically ,the Coating weight is determined usingX-RayFluorescence(XRF).Titanium-und Zirconium Coating WeightsTherelative Zirconium / Titaniumcoatingweight(= Zirconium/ Titaniumcoatingweight after treatmentminus the Zirconium / Titaniumcoatingweightof anuntreatedsample) should beinthe rangeof 3 and 20 qualitativedeterminationtestsolutions are ,2 m Millfinfish TiZr