BECHEM BERUFORGE 152 DL
Water miscible drawing paste
Examples of Application
· Deep drawing
· Bending
· Punching
· Wire drawing
· Tube Drawing
Material
· Steel
· Stainless
· Aluminium
· Copper
· Messing
Properties
· Water miscible drawing paste to be used on phosphate free semi finished products
Characteristic data
· Appearance : beige paste
|
Evaporation residue |
% | 45 – 55 |
AA_003-153 |
|
Unworked penetration |
1/10 mm | 200 – 400 |
DIN ISO 2137 |
|
pH value |
9.5 – 10.5 |
AA_003-33 acc. to 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 +50 °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