CrystalCoat Extends Cylinder Head Life

(Press Release)
Friday, February 03, 2012

CrystalCoat - good news for engines running on heavy fuel and gas.

Simplex-Turbulo, agents for Märkisches Werk (MWH), are now able to actively promote a very interesting new product which extends the life of cylinder head valves. High combustion temperatures in engines operating on HFO combined with fuel impurities are well known to limit the service life of cylinder head valves.  Even valves made of expensive nickel-based super-alloys suffer from hot-gas corrosion especially in highly loaded engines.

Since 2004 MWH has been pioneering the development of a solution to these problems. Higher-resistant materials are not easily available, so the approach has been to develop special coatings which protect the valve. Now there are several different grades for the new CrystalCoat, and CrystalCoat HT products. The different specifications allow MWH to tailor the coating to the individual application.  All the coatings however include the following characteristics:

• high resistance to hot corrosion
• excellent bonding strength between coating and substrate
• coefficient of thermal expansion matched to the substrate
• elastic and highly resistant to thermal shock
• low porosity
• impermeable and thermodynamically stable up to high temperatures

 

Hot-gas corrosion tests run at 700o C and 900o C have shown very significant reduction in corrosion rates when compared with Nimonic 80A and Nimonic 81.  Operations trials in a 320 mm bore power generation engine have confirmed these results.  Trials have so far only been carried out on Nimonic valves coated with CrystalCoat.  The next step will be to carry out trials on less expensive valve materials, but already MWH are predicting major savings for operators of engines with high temperatures such as power generating engines, and also on engines operating on gas.

Maritime Reporter January 2015 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Technology

Hofste, Montijn Nominated to Supervisory Board Fugro

Fugro N.V. announces that the Supervisory Board of Fugro nominates Mrs. P.H.M. Hofsté and Mrs. A.H. Montijn for appointment as members of the Supervisory Board

Petrobras Develops Technology to Cut GHG

Petrobras develops a new technology that reduces the emission of gases that cause greenhouse A new technology to reduce the emission of greenhouse gases (GHG)

Subsea Crane Takes a Long Journey

Last September the test bed in Rostock was the stage of a single lift of the RL-K 7500 subsea crane. The same crane was then loaded and shipped to the South Korean customer.

Environmental

U.S. Refinery Workers' Contract Talks Moving Slowly

With just a week of bargaining left until the national contract for U.S. refinery workers expires, the United Steelworkers union (USW) said talks with oil company

Petrobras Develops Technology to Cut GHG

Petrobras develops a new technology that reduces the emission of gases that cause greenhouse A new technology to reduce the emission of greenhouse gases (GHG)

Oil Platform Ablaze in the Gulf of Mexico

Fire broke out on an unmanned oil platform in the Gulf of Mexico approximately five miles south of Port Fourchon, La., the Bureau of Safety and Environmental Enforcement (BSEE) reported.

Fuels & Lubes

Oil Majors Seek to Claw Back Costs from Service Firms

Global oil majors say they are demanding cheaper but better services from engineering and service companies, or simply taking work back in-house, after losing hundreds

BP Remains Singapore's Top Marine Fuel Supplier

BP Singapore kept its spot as a top marine fuel supplier by volume for the eleventh straight year in 2014 at the world's biggest bunkering port, the Maritime Port Authority of Singapore (MPA) said.

GTT, Conrad Shipyard Ink Deal for LNG Barges and Bunker Tanks

GTT signs license agreement with Conrad Shipyard for membrane containment systems for LNG barges and bunker tanks   Gaztransport & Technigaz (GTT) announced that its U.

Marine Power

Naval Air Forces Holds Change of Command

Commander, Naval Air Forces (CNAF) held a change of command ceremony aboard the aircraft carrier USS John C. Stennis (CVN 74) at Naval Air Station North Island Jan.

Xunlong Shenzhen Orders Dutch-designed Ferry

CoCo Yachts B.V. inks contract with Xunlong Shenzhen Ferry Company for one Coastal Cruiser 300 Xunlong Shenzhen Ferry Company has ordered a Coastal Cruiser 300 ferry from CoCo Yachts,

Taiwan Naval Fleet Adds Home-Grown Vessel

Taiwanese Navy formally took delivery Friday of a new locally designed supply vessel that it said will help enhance Taiwan's maritime combat capabilities.   In

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Maritime Security Naval Architecture Pipelines Pod Propulsion Salvage Ship Electronics Sonar Winch
rss | archive | history | articles | privacy | terms and conditions | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.1597 sec (6 req/sec)