Specific Lunac 2+ features:
- This hard crack free coating is highly resistant to adhesive and abrasive wear (adhesive wear test results: 23 N at 0.7 m/s; the combination Lunac 2+/Lunac 2+ is 19 times more wear resistant than the combination of hardened (HRc 64-66) DIN 1.2379 on hardened DIN 1.2379.
- Virtually immune to galling / fretting / cold welding or seizing problems in non-lubricated conditions.
Therefore this coating is ideal for heavily loaded and non-lubricated parts in relative motion. - Lunac 2+ duplex has proved to be one of the most reliable corrosion protection systems in (sea)water.
- Often, wear of the non-coated opposing part is also significantly reduced, especially in sea water.
- The coefficient of friction is 30% lower than that of hardened steel DIN 1.2379 on steel 1.2379.
- Steel cylinders and rods coated with Lunac 2+ are practically equal to HVOF
ceramic plated cylinders with respect to wear, but are much cheaper,
much less vulnerable and help prevent high seal wear. - Although moisture can slightly tarnish the Lunac 2+ surface,
Lunac 2+ coatings continue to be highly efficient. - Lunac 2+ resists oxidative wear (tribo wear) very well.
- Complies fully with the RoHS standard.
- Relatively ductile (elongation 0.28%).
Main hinge-pin lock door coated with Lunac 2+
duplex (left side):
-prevention of general corrosion and
galvanic corrosion
due to the small
potential
differences and exclusion of stainless steel
-substantial reduction of friction and
adhesive wear (hinge-pin and composite bearing site)
-ultimate scratch and impact resistance (see pictures at the page bottom)
Hydraulic piston 3.9 m (153.5", effective length) coated with 75 µm (3 mils) Lunac 2+, to resist (sub surface) corrosion, scratches and high abrasive wear load. Moreover, this semi ceramic coating is highly impact resistant (no blisterings) and seal friendly. The new WMV 3900 mm plating line is able to handle parts up to 3000 kg (6667 Lbs).
| General Lunac system features:
|
Lunac 2+ coated parts is sliding systems can act like full ceramic parts without the notorious brittleness of full ceramic. |
Figure 1. Hydraulic strand jack pistons coated with 55 µm/2.2 mil Lunac 2+. The Lunac 2+ coating proved to be a very reliable and economic means of obtaining long lasting wear, scratch and corrosion resistance. After plating and hardening (320°C / 608 F) little effort is needed to acquire the final smooth surface (Ra= 0.2 µm / .008 mil).
Figure 2. The main-bearing axles in the doors of the Kornwerderzand lock of the major northern Dutch IJsselmeer dam have been Lunac 2+ coated because of the corrosion resistance, abrasive (sand) wear resistance and shock resistance (waves) of the coating. Moreover the Lunac 2+ coefficient of friction in water contact conditions can be exceptionally low.
Figure 3. Heavy lifting hydraulic pistons coated with Lunac 2+. The most frequently received feedback relating to hydraulic equipment in harsh outdoor conditions is the long term reliability of the coating;
- high scratch resistance and no oil leakage
- little seal or guide-strip wear
- no rust formation (and no under corrosion)
- accidents do not initiate a peeling process
but are limited to localized deformations
Picture: Enerpac