BLACKENING AND COLOURING

PROCESS OPERATING CONDITIONS

APPLICATION
BLA III

BLA III
TEMPERATURE
TIME
500 – 750 gms/l
Ambient
1 – 5 mins
A room temperature immersion blackening
process for iron and steel.
Very easy to control.
NAHMER 450

NAHMER 450
TEMPERATURE
TIME
175 – 200 ml/1
Ambient – 40
1 – 3 minS
An alkaline bath for producing jet black oxide
coatings on copper and copper alloys.
NASFER 439NASFER 439
TEMPERATURE
TIME
150 – 200 ml/l
Ambient – 40 C
1 – 3 mins
The process produces jet black oxide coatings on brass.
LASTU XL 1001

LASTU XL 1001
TEMPERATURE
TIME
15 – 25 % (v/v)
70 – 90 C
5 – 15 mins
Heavy adherent coating of Zinc phosphate.
Easy to operate.
Better bonding of paints.
LASTU XL 1003

LASTU XL 1003
TEMPERATURE
TIME
10 – 20 % (v/v)
80 – 100 C
5 – 10 mins
Heavy duty Zinc phosphate for better life of components.
Used as pre paint application.
Compact crystal growth.
Easy to use.