PRE-TREATMENT PROCESS FLOW CHART

DEGREASING I It is an alkaline cleaner used for cleaningChemical Used : Surklin 102 Of ferrous mild steel article by dip mode Specified time : 4 min of applicationSpecified Temp: 50 60 Deg CConcentration : 20 gm/LitPointage : 28 30 ml

DEGREASING II It is an alkaline cleaner used for cleaningChemical Used : Surklin 102 Of ferrous mild steel article by dip mode Specified time : 4 min of applicationSpecified Temp: 50 60 Deg CConcentration : 20 gm/LitPointage : 28 30 ml

Water Rinse I Rinsing processSpecified Time: 1 minSpecified Temp: Ambient

Water Rinse II Rinsing processSpecified Time: 1 minSpecified Temp: Ambient

DE-RUSTING Process to remove the Rust if any on theOnly for CR,HR Sheets Articles by dip mode of application

Chemical Used : Protosolve 40Specified Time: 10 minSpecified Temp: AmbientConcentration : 10 gm/litPointage : 16-20

Water Rinse III Rinsing processSpecified Time: 1 minSpecified Temp: Ambient

Water Rinse IV Rinsing processSpecified Time: 1 minSpecified Temp: Ambient

ACTIVATION Process for surface conditioning which is titanium based chemical Used : Surcon 301 Z Conditioning Agent with an adjusting agent of the hardness Specified Time: 1 min of water.(used as conditioning agent for mild steelSpecified Temp: Ambient prior to Zinc phosphating)Concentration : 0.1 0.15 gm/litPH value : 8-9

PHOSPHATING Process to convert the metal surface to a non-metallic, fine crystal,Chemical Used : Surfix Zn 615 M(5 gm/lit) Zinc phosphate coating, which inhibits corrosion and increases Surfix Zn 610 R(5 gm/lit) the adhesion and durability of paint finishes Additive 685(0.5 gm/lit) Neutraliser SC(0.25 gm/lit) Accelerator 2(0.17 gm/lit)Specified Time: 7 minSpecified Temp: 40 50 Deg CPointage : 22 25 ml

Water Rinse V Rinsing processSpecified Time : 1 minSpecified Temp: Ambient

HOT PASSIVATION Process for sealing the pores of zinc phosphate surfacechemical Used : Ginthox NCR 60 and increase corrosion resistance

(Chrome free passivation)specified Time: 1 minSpecified Temp: 40 50 Deg CConcentration : 0.20 gm/litPH value : 4-7

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