BECHEM BERUFORGE 121 D
Coating lubricant for cold forming
Examples of Application
· Complex parts for cold massive forming
· Deep drawing
· Bending
· Punching
Material
· Steel
· Aluminium
Properties
· Watery suspension of solid lubricants
· Very smooth surfaces
· High forming degrees can be achieved
Characteristic data
· Appearance : white
|
Evaporation residue |
% | 29 – 34 |
AA_003-153 |
|
Density at 20 °C |
g/cm3 | 1.0 – 1.2 |
AA_003-9 acc. to DIN 51757 |
|
Efflux time at 20 °C |
s | 40 – 60 |
AA_003-121 acc. to EN ISO 2431/4 |
|
pH value in dispersion |
10.5 – 12 |
DIN 51369 |
Instructions for use
Operation
· Physical
Pre treatment of surfaces to be coated
· Surfaces have to be clean and free from grease
Product application
· Storage : Container to be stored under dry and frost protected conditions. Temperature range +5 °C to +40 °C
· Water miscible in any ratio to adjust the desired service concentration
· Required thickness is determined by the corresponding concentration
Coating processes
Blank sections
· Inductive heating up to 90 to max. 95 °C
· Flood for approx. 2 sec.
· Complete drying – if necessary with hot air
Construction elements
· Heat coating bath to 50 to max. 60 °C
· Dip parts for about 5 min. into a coating bath by means of drum or tunnel machine (duration depends on geometry and mass). Permanent agitation of the coating bath is necessary!
·Allow parts to drip off
· Complete drying – if necessary with hot air
Wire / sheet coils
· Surface has to be free from electrolytes from the pickling bath
· For pickled coils temporary corrosion protection has to be applied in the last rinsing bath
· Pickling of hydrogen annealed coils should be avoided in order to prevent contamination of the surfaces
Coating bath
· pH value should be situated between 8.5 and 9.5
· Protect against ingress of acids and preserving agents
· Monthly analysis with regard to bacterial attack and ingress of foreign substances (Fe, Zn, P) recommended
·Determination of pH-value and solid content by evaporation test
Parts cleaning
· Alkaline with water at a temperature between approx. 60 – 70 °C