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Colour Anodizing Chemicals For Aluminium

Degreasing

:- Removal of Oil,Grease and Oxide coating from aluminium surface.

PRODUCT NATURE CONC. TIME TEMP.
ALKLIN HD HEAVY DUTY ALKALINE DEGREASER 5% w/v 5-15 MIN RT TO 65°C
NT FUMER ADDICTIVE TO SUPRESS THE TOXIC FUMES COMING OUT OF DEGREASING BATH. 0.05-0.1% v/v -- --


Etching

:- Chemical finishing of degreased aluminium surface.

PRODUCT NATURE CONC. TIME TEMP.
ALCLEANSER ACIDIC ETCHING 3-5% v/v 10-15 MIN RT
ALBRIGHT P ALKALINE ETCHING 5-10% w/v 5-10 MIN RT


Desmuting

:- To remove traces of black smut left

PRODUCT NATURE CONC. TIME TEMP.
NITRIC ACID ---- 5-10% v/v 2-5 MIN RT


Anodizing

:- Electrochemical conversion process leaving porous oxide coating on aluminium surface.

PRODUCT CONC. TIME VOLTAGE CURRENT DENSITY TEMP.
SULFURIC ACID 160-180 GM/LIT 30 MIN 14 TO 18 VDC 10-15A/SQ.FT. 15-20°C


Electrolytic Coloring

:- Electro deposition of metallic color particles into the anoding coating.

PRODUCT NATURE CONC. TIME VOLTAGE TEMP.
ALCOL P METALLIC SALT 12-15 GM/LIT 15 SECONDS TO 13 MIN DEPENDING UPON THE COLOUR SHADE REQUIRED 14 TO 18 V A.C. RT
ALCOL ST COLOUR STABILIZER & THROWING POWER IMPROVER 18-22 GM/LIT    
ALCOL L201 LIQUID WITH COMBINED COLOUR AND STABILIZER.EASY TO USE 6-7 % v/v
SULFURIC ACID --- 18-22 GM / LIT


Sealing

:- Seals the pores of anodic coating

PRODUCT NATURE CONC. TIME PH TEMP.
ALSIL 71 IMPREGNATING METALLIC SALTS 5 GM/LIT 0.5-1 MIN / MICRON OF ANODIC COATING 5 TO 6.5 RT
ALSIL 81 IMPREGNATING METALLIC SALTS 4 GM/LIT 0.5-1 MIN / MICRON OF ANODIC COATING 5 TO 6.5 RT
ALSIL 63 HOT SEALING SALT 3-5 GM/LIT 0.5-1 MIN / MICRON OF ANODIC COATING 5 TO 6.5 55-65°C

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