Highest quality standards
Metal working for more than 50 years
now with more than 40 employees.
Phosphating according to DIN EN 12476
Description
Phosphating creates thin, compact grained and antisoluble metal phosphate layers on the surface of ferrous parts.
Phosphating is an chemical process. By dipping parts into sour solutions the chemical reaction with the backing material creates a compact grained metal phosphate layer firmly bonded to the surface.
Advantages
- good temporary corrosion resistance
- compact grained layering
- reduction of friction
- improvement of sliding properties
- improved adhesion of coatings
- electrically insulating properties
- easier subsequent forming
- areas not to be coated may be partially covered (cover work if partial dimensional stability is required)
Examples of application
Materials:
- iron
- steel
- cast iron
Areas of application:
- pressed and bent parts
- engine and transmission parts
-
axles, shafts - machine parts
Other advantages:
- inexpensive
- simple process
- environmentally friendly
- special measurements
Facts:
- Layer thickness: 3 – 15 µm
- Bath sizes:: 2000 x 1200 x 600 mm
- Color: light gray to dark gray
- up to 2 tons weight per part
- rack working
- drum working
Standard applied:
- DIN EN 12476-Fe//[Processes]/[Function]/ [Mass per unit area]/[Atertreatment]
- Processes available:
- ZnPh - Zinkphosphatieren
- MnPh - Manganphosphatieren
- Possible functions:
- coupling agent/corrosion protection
- easier cold forming
- reduced friction
- electrical insulation
- Aftertreatment available
- T1 - Coating
- T4 - oiling, greasing
Example:
The statement ‘surface acc. to DIN 12476-Fe//Znph/r/8/T4 means: Parts are zinc phosphated for corrosion protection. The mass per unit area is 8 g / m². At the end the part is dipped into an water-in-oil emulsion for preservation.
