DiamondFaces® - the innovative coating technology from EagleBurgmann for numerous applications
EagleBurgmann presents mechanical seals with a crystalline diamond layer for extreme
requirements. Since their introduction in 2007, numerous applications in pumps, compressors
and agitators in the chemical, oil & gas, refinery, slurry, pharmaceutical and water supply
fields have demonstrated the value-add which a plant can achieve when it is fitted out with
such seals. Lower energy consumption, far longer service life and much improved MTBF and MTBR
performance are convincing proof and directly reflected in saved costs. It is a success story
confirmed not least by satisfied customers and international commendations. A diamond coating
up to 8 µm thick makes the seal faces extremely hard and wear resistant. Other outstanding
features include excellent heat conductivity, maximum chemical resistance and low friction.
Examples of successful practical applications:DiamondFaces® in terephthalic acid production
Terephthalic acid is a basic chemical which is used in large quantities for the production of PET bottles/containers and many types of polyester fiber and other engineering plastics. Acetic acid and other constituents are mixed together during the production process. The highly viscous mixture has poor lubrication properties and contains very hard particles. Conventional mechanical seals failed repeatedly after a short period of time. The EagleBurgmann mechanical seals with DiamondFaces® coating which were installed in the
processes pumps have been running now for more than 18 months fault-free in spite of the harsh properties of the media involved.
DiamondFaces® at an oil sand field
Production systems in an oil sand field are exposed to extreme conditions. With the SAGD
method (Steam Assisted Gravity Drainage), oil is separated from the sand using steam pressure. The handling systems have to cope with an extremely abrasive mixture of oil, sand, water and steam. A Canadian producer decided to deploy multi-phase pumps and mechanical seals with DiamondFaces™ coatings. The results are an improvement in dry-running capability and seal life by a factor of 25. The seals have been running for 8,500 hours without reason for complaint.
DiamondFaces® on the high seas
The diesel engine on a large ocean-going vessel does not require high-grade fuel. However, this places significant demands on the fuel supply systems. The pumps and seals have to be designed to handle the changeover from heavy oil to low-sulfur diesel fuel while the ship is underway. EagleBurgmann has provided mechanical seals with a DiamondFaces® coating for installation on a cruise ship to support changeover between different types of fuel. The results are a significant improvement in emergency running characteristics and a drastic
reduction in the high temperatures which are generated during dry running. The seal has been
running fault-free for more than 10,000 hours.
Summary of advantages provided by this innovative coating technology:
Reliable
- Maximum process reliability
- Universal chemical resistance
Rugged
- Unsurpassed wear protection
- Extends operating limits
- Lowest possible coefficient of friction and minimal heat generation, even when lubrication
- is insufficient and the seals are running dry
Cost-efficient
- Much longer service life
- Extreme improvement in MTBF and MTBR performance and massive reduction
- in the associated costs
- Reduction of energy consumption by 80% and more compared with an
-
uncoated hard/hard material pairing
More: www.eagleburgmann.com
Posted: November 2009
|
+
+ Media Links + +
For more information, media details or
sample copies please contact
wilhelms@pennwell.com
www.sicking.de
|