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

Shipbuilding

The Hour of Power: Hybrid Marine Technology and Green Ports

In 2015 two significant developments are going to make many operators, owners and builders of professional vessels consider hybrid marine power. Firstly the new emissions laws in ports,

GTT Records Order for 2 LNG Tankers

GTT receives a new order from Hyundai Samho Heavy Industries for two LNGCs for Teekay   GTT, a designer of membrane containment systems for the maritime transportation

MES Delivers Bulk Carrier Newbuild

MES delivers next ship of its Eco-Ship neo60BC design, 60,000 DWT type bulk carrierM.V. Phoenix Rising   Mitsui Engineering & Shipbuilding Co., Ltd. (MES) completed and delivered a 60,

Ship Repair & Conversion

The Hour of Power: Hybrid Marine Technology and Green Ports

In 2015 two significant developments are going to make many operators, owners and builders of professional vessels consider hybrid marine power. Firstly the new emissions laws in ports,

UK Navy’s Ice Patrol Ship Gets a New Coating

U.K. Royal Navy Ice Patrol Ship HMS Protector is deployed on operations for 330 days a year, mostly in the Antarctic region, making it essential that her underwater

Oranjewerf Ship Repair becomes Damen Shiprepair Oranjewerf

On 1 July 2015, Oranjewerf Ship Repair, which joined Damen Shipyards Group in 1989, will officially change its name to Damen Shiprepair Oranjewerf. This name

News

Lifting Specialists Modulift, IMES form Joint Venture

Lifting industry specialists Modulift and IMES have formed a joint venture to offer an integrated management service to clients internationally.   The two companies

The Hour of Power: Hybrid Marine Technology and Green Ports

In 2015 two significant developments are going to make many operators, owners and builders of professional vessels consider hybrid marine power. Firstly the new emissions laws in ports,

Striking Ferry Workers to Ease Blockade of Calais Port

Striking ferry workers blocking access to Calais port in northern France agreed on Wednesday to let some boats through, partly lifting a blockade in its third day.

Marine Equipment

Lifting Specialists Modulift, IMES form Joint Venture

Lifting industry specialists Modulift and IMES have formed a joint venture to offer an integrated management service to clients internationally.   The two companies

The Hour of Power: Hybrid Marine Technology and Green Ports

In 2015 two significant developments are going to make many operators, owners and builders of professional vessels consider hybrid marine power. Firstly the new emissions laws in ports,

SUNY Maritime to Host e-Navigation Conference

The e-Navigation Underway 2015 – North America conference will be hosted by The State University of New York (SUNY) Maritime College from September 28 to 30 on the college’s Throggs Neck, N.

Classification Societies

NAPA Streamlines Compliance with Class Design Rules

NAPA Steel and NAPA Designer updated to reduce man-hours and duplication associated with new Common Structural Rules BC&OT   Global maritime software, services

DNV GL Holds Hearing Ahead of New Rules Launch

More than 800 customers and stakeholders will receive the new DNV GL rules today as part of an external hearing process before their publication and entry into force.

IRClass Offers EEDI Validation Service

IRClass (Indian Register of Shipping) has recently included Energy Efficiency Design Index (EEDI) validation to its service offerings. This is in response to the

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Maritime Security Maritime Standards Navigation Offshore Oil Pipelines Pod Propulsion Ship Electronics Ship Repair
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: 0.1832 sec (5 req/sec)