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Pre-Treatment For Mild Steel

Zinc and Iron Phosphating Chemicals

Degreasing

:- Removal of Oil,Grease & Carbonaceous deposits from ferrous surface.

PRODUCT NATURE CONC. TIME TEMP.
KLINOL / ALKLIN SERIES ALKALINE DEGREASING 5% w/v 10-15 MIN RT TO 60°c
OLOSOL SERIES ACIDIC DEGREASING 25% v/v 10-15 MIN RT

Derusting

:- Removal of rust and scale from ferrous surface.

PRODUCT NATURE CONC. TIME TEMP.
RUSTOSOL ACIDIC DESCALING 33-50% v/v 20-30 MIN RT
RUSTOSOL SERIES ACIDIC DERUSTING 25% v/v 10-15 MIN RT

2 IN 1 CHEMICALS

:- Derusting Chemicals with excellent degreasing properties.

PRODUCT NATURE CONC. TIME TEMP.
RUSTOL SERIES EMULSIFIED ACIDIC DERUSTING 25% v/v 10-15 MIN RT

Activation

:- Gives compact & uniform coating of zinc phosphate

PRODUCT NATURE CONC. TIME TEMP.
MOD ACIDIC ACTIVATION 0.5-1% w/v 2-3 MIN RT
MOD-SUP ALKALINE ACTIVATION 0.25-0.5% v/v 1-2 MIN RT


Phosphating

:- Phosphate Coating for improved corrosion resistance & Paint Adhesion.

ZINC PHOSPHATE COATING IRON PHOSPHATE COATING
PRODUCT NATURE CONC. TIME TEMP.
PHOSCOAT XLZ MEDIUM WEIGHT (CLASS C ) ZINC PHOSPHATE 5% v/v 12-20 MIN RT TO 55°C
PHOSCOAT TZ LIGHT WEIGHT (CLASS C ) ZINC PHOSPHATE 5% v/v 10-20 MIN RT TO 55°C
PHOSCOAT I EXTRA WEIGHT (CLASS D ) IRON PHOSPHATE 4% v/v 5-7 MIN RT

Passivation

:- Seals the pores of phosphate coating

PRODUCT NATURE CONC. TIME TEMP.
PASS CHROME BASED CHEMICAL 0.1% v/v 1 MIN RT TO 80°C
PASS CF CHROME FREE CHEMICAL 0.15% v/v 1 MIN RT TO 80°C


Phosphoric acid based cleaners which performs 3 functions of degreasing , derusting & coating - deposition of minute coat of iron phosphate on ferrous surface and hence named so. The process is easy to install and operate.However the adhesion and life of the paint/ powder coat are not as much as that attained with eight tank process.

PRODUCT NATURE CONC. TIME TEMP.
PRIME SUP 31 FOR HEAVY RUST & HEAVY OIL 25% v/v 10-15 MIN RT
PRIME SUP FOR HEAVY RUST & LIGHT OIL 25% v/v 10-15 MIN RT
PRIMOL 31 FOR MEDIUM RUST & HEAVY OIL 25% v/v 10-15 MIN RT
PRIME 31 FOR MEDIUM RUST&MEDIUM OIL 25% v/v 10-15 MIN RT

There are three ways of using 3 in 1 chemical

1. Conventional dipping process as shown above.

2.Dipping followed by immediate wiping with dry cloth

3.wiping with 3 in 1 chemical , followed by immediate wiping with dry cloth

Depending upon the nature of article , the best way among the above three should be selected , consulting the technical person of M/S Dimetrics

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