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 September 2013 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Shipbuilding

RIMPAC Exercise Puts LCS Through Paces

It was the middle of May, and the littoral combat ship Independence was operating out of San Diego, testing components of the mine warfare mission package. The mission is one that,

New Superyacht ROCKIT.IT Launched by Feadship

Feadship says it has launched the outstanding 60.35-metre motoryacht ROCK.IT. Created for an experienced owner who has chartered Feadships and appreciated the essence of the brand,

FTA Approves WSF Ferry Terminal Plans

In the latest Washington State Ferries Weekly Update, Capt. George A. Capacci, Interim Assistant Secretary WSDOT/Ferries Division briefs as follows: "FTA approves

Ship Repair & Conversion

More German Shipowners Look to Gibdock for Repairs

Gibdock remarks it has continued to see its stock rise amongst the German shipowner community over the past year. Indeed the Gibraltar ship repair yard’s recent

NZ Interislander Ferry to Dry-dock in Devonport

NewZealand's KiwiRail says that the Interislander ferry Arahura has left Wellington for her scheduled bi-annual dry-docking in Devonport, having last visited Auckland in July 2012.

DoD Award Dredging, Ship Maintenance, Charter Contracts

US Department of Defense informs of placement of contracts for Chesapeake Bay dredging, dry-docking of USS Pearl Harbor, and charter of surface escort vessels. Details as follows: 1.

Coatings & Corrosion

Ecospeed Fuel and Cost Saving Solutions at SMM

Ecospeed announced it will exhibit its line of fuel and cost saving solutions at SMM in Hamburg. Ecospeed and fuel savings Routine in-water cleaning results

Report: Ports Lack Maintenance Support

The latest Barometer Report from Trelleborg has revealed a huge gap in the maintenance requirements of port owners and operators, and the support that suppliers are able to provide.

News

RIMPAC Exercise Puts LCS Through Paces

It was the middle of May, and the littoral combat ship Independence was operating out of San Diego, testing components of the mine warfare mission package. The mission is one that,

NYK Opens New Planning Center in Kumamoto

On September 1, 2014, NYK and Kozo Keikaku Engineering Inc. established a stowage planning center for container shipping at the Kumamoto office of Kozo Keikaku Engineering Inc.

TNO Receives 'International Media Award for Prevention'

The Engagementgame developed by TNO in collaboration with partners is the winner of the 'International Media Award for Prevention' in the category Multi Media.

Marine Equipment

RIMPAC Exercise Puts LCS Through Paces

It was the middle of May, and the littoral combat ship Independence was operating out of San Diego, testing components of the mine warfare mission package. The mission is one that,

MARAD Shipbuilding Loan Guarantee

The launch of the Bravante IX, built in a U.S. shipyard, was from the investments made by the Maritime Administration (MARAD) just three years ago. The investment

Voith Schneider Propellers Drive Double-ended Ferry MS Frisia IV

Ferries operated by Norden-Frisia AG have been serving the East Frisian island of Norderney for many decades. Navigation in these coastal waters poses special

Classification Societies

Stena, Sonangol Launch Training Facility in Angola

The Centro De Formação Maritima De Angola (CFMA) was officially launched on August 27 by top management from Sonangol, the Angolan public sector energy company and the Stena Group of Sweden.

Daihatsu Joins ClassNK Research Project

Classification society ClassNK announced that it will embark on a joint research project together with Daihatsu Diesel Mfg. Co., Ltd. Through the partnership, ClassNK

SHIPPINGInsight Extends Early-bird Registration

SHIPPINGInsight 2014 is extending the deadline for early-bird registration to Sept. 15. Attendees registering online at www.shippinginsight.com/choose-event prior to midnight Sept.

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Maritime Security Naval Architecture Offshore Oil Pipelines Pod Propulsion Port Authority Ship Simulators 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: 0.1163 sec (9 req/sec)