ClassNK Approves Fillet Welding Consumable

MarineLink.com
Thursday, April 17, 2014

Classification society ClassNK announced that it has granted type approval for the new MX-200F welding consumable, developed by Kobe Steel Co., Ltd. (KOBELCO) to improve welding efficiency and coating quality in commercial vessels.

Until now, shipbuilders using conventional fillet welding consumables had to make two welding passes for the required weld leg lengths of around 8mm or above. As the IACS Common Structural Rules (CSR) require the use of 8mm leg lengths in some structural members, this has meant that the relevant welding time for oil tanker and bulk carrier newbuildings has virtually doubled. The IMO Performance Standard for Protective Coatings (PSPC), applicable to vessels over 500 gross tons and double-sided skin spaces in bulk carriers over 150m in length, also substantively requires welding beads to have a smooth profile in order to ensure the required paint film thickness, further increasing the difficulty of welding work.

To help address these challenges and improve welding efficiency, Kobe Steel, Ltd., Shin Kurushima Dockyard Co., Ltd. and ClassNK began a joint R&D project to investigate the relationship between the profile of welding beads and paint film thickness. The research, which was carried out as part of ClassNK’s Joint R&D for Industry program, resulted in the development of KOBELCO’s new MX-200F fillet welding consumable. MX-200F not only allows one pass welding with the leg lengths of around 8mm, but also ensures welding beads have a smooth profile in line with PSPC requirements. The application of this welding consumable is expected to greatly reduce man-hours required for this kind of welding work compared to existing consumables.

Upon completion of the development process, KOBELCO submitted the new welding consumable to ClassNK for approval for application in vessel construction. After a thorough testing and review process, ClassNK determined that MX-200F met the requirements of the ClassNK Rules and approved its use in ship construction.

The development and approval of MX-200F represents the latest success of ClassNK’s Joint R&D for Industry program which has provided funding and research support for nearly 300 joint maritime R&D projects since its founding in 2009.

classnk.or.jp
 

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

Shipbuilding

Alaska, Washington to build Arctic Icebreakers

Senator Lisa Murkowski, Alaska, and Senator Maria Cantwell, Washington, have introduced a bill that would authorize the Navy to build up six icebreakers for use by the U.

Launch of First Future Destroyer, Hobart

Speech delivered by the Minister for Defence, Kevin Andrews during the launch of Hobart - the first future destroyer: Thank you for being here on this very important day.

Fincantieri Invests In Camper & Nicholsons

Fincantieri has signed an agreement for the acquisition of a minority stake via capital injection in Camper & Nicholsons International (Camper & Nicholsons), the

Ship Repair & Conversion

US Funding for Air Emissions/Alternative Energy Projects

The U.S. Maritime Administration (MARAD) announced that up to $1.3 million in Federal funding is now available through cooperative agreements for projects supporting

ERMA Bullish on Ballast Water Treatment

After having delivered several BWTS systems in Kita Nihon shipyard in Japan, one more ERMA FIRST BWTS was successfully installed onboard the Bulk Carrier M/V SCARABÉ(DWT: 60,

Conrad Announces Management Team Changes

Conrad Industries, Inc. announced the appointment of Scott J. Theriot as Executive Vice President and Chief Operating Officer.   Johnny Conrad, President and Chief Executive Officer,

News

Solarworld Wants Duties on Chinese Solar Goods in U.S. Extended

German solar manufacturer SolarWorld will apply to the United States for an extension of duties on Chinese panel imports that are due to end this year, weekly Euro am Sonntag said.

Sea Urchin Haven Disturbed by Oil Spill

Stephanie Mutz makes a living plucking sea urchins from the Santa Barbara coast and selling the prickly treasure to upscale restaurants in Southern California.

5 Tunisian Migrants Die in Shipwreck

At least five Tunisian migrants died on Saturday when their boat sailing to Italy capsized off the Tunisian coast, officials said. "A migrant boat carrying

Marine Equipment

Viking Orders 2 Liebherr Cranes

An LR 1300 with super lift equipment and an LR 1160 crawler crane will strengthen the fleet of Viking Cranes. The Tallinn-based company with branch offices

Alaska, Washington to build Arctic Icebreakers

Senator Lisa Murkowski, Alaska, and Senator Maria Cantwell, Washington, have introduced a bill that would authorize the Navy to build up six icebreakers for use by the U.

Seaway to Receive Prestigious OECD Award

The St. Lawrence Seaway Management Corporation (SLSMC) announced today that it will receive a prestigious award from the Organization for Economic Cooperation

Classification Societies

Registration for SHIPPINGInsight 2015 Now Open

Online registration is now open for the SHIPPINGInsight 2015 Fleet Optimization Conference & Exhibition.   Now entering its fourth year, SHIPPINGInsight is an

LR Establishes Applied Technology Group

Lloyd’s Register establishes the Applied Technology Group, centered around the activities of Martec Limited   The Applied Technology Group (ATG) describes is

IRClass is 40

IRClass, a leading Class Society in Asia has successfully completed 40 years in the service of Maritime industry. With the growth in India’s international trade,

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Maritime Security Offshore Oil Pod Propulsion Salvage Ship Electronics Ship Repair Sonar Winch
rss | archive | history | articles | privacy | 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: 0.1711 sec (6 req/sec)