As a one-stop shop for turbocharger service, Tru-Marine offers coverage for the majority of global marine turbocharger products. The company portfolio includes major names such as MET Turbo, KBB, Kawasaki and Napier. Established in 1977, it has built a strong reputation in the marketplace and offers full service facilities from both scheduled overhauls to emergency repairs on-board vessels.
Tru-Marine serves the industry from eight locations worldwide, including Singapore, China, the United Arab Emirates, the Netherlands and the United States. In over 40 years of operation it has also gained extensive experience in turbocharger technology. Comprehensive spares supply, maintenance and overhaul services are fundamental to the business but the company also offers repair and reclamation of high value components such as turbine blades and shafts. This work is carried out using modern equipment for laser-aided reclamation of shafts, and high velocity oxygen fuel (HVOF) coating application.
The company has specialised in many aspects of turbocharger component recovery and has adopted innovative technology to develop solutions to reclaim worn or damaged turbocharger components. To do this, Tru-Marine established its own research and development facilities over 20 years ago and has gained further knowledge and expertise through collaboration with other institutions. One example of this is in the development of competent gas tungsten arc welding processes for turbine blade repair.
One recently-publicised development was the availability of turbine nozzle rings treated with Tru-Marine’s Supercoat technology, which offers enhanced protection against corrosion and wear. With erosion of nozzle rings being a common problem in aggressive operating conditions, vessels can suffer unplanned down times, resulting in the need for prompt emergency service work to be carried out.
Using HVOF technology, Tru-Marine launched its Supercoat method to offer improved resistance to premature wear of nozzle rings and increase component life. The system uses molten or semi-molten coating materials, sprayed onto the surface of the nozzle ring by a high-temperature and high-velocity gas stream. The resultant coating has a very high hardness level and outstanding adhesion to the surface of the nozzle. This durable coating provides excellent wear resistance and improved corrosion protection, due to its high density coating compared to the base material. The high velocities employed, combined with the fine powder qualities used, produce a smooth as-sprayed surface with a high quality of finish.
Tru-Marine technology developments have continued to retain their pace over recent years and the company has set up a learning scheme to complement its services. This includes a mentorship programme, offering a structured learning programme in association with Singapore Aero Engine Services Ltd (SAESL). SAESL is a joint venture between Rolls-Royce and Singapore Airlines Engineering and is well known for its aero engine and component repair services for the Rolls-Royce Trent engine family.
With the regular introduction of new repair and advanced remanufacturing techniques, Tru-Marine has now added 3D printing – or additive manufacture – to its portfolio with the first production of a printed marine turbocharger nozzle ring. This example demonstrates the ability to print in a super-alloy material and, following positive test results, the nozzle has been confirmed as acceptable for use in turbocharger applications. This new technology offers considerable opportunities for the future remanufacture of many mechanical components, including for the turbocharger sector.
Working with business partners, Tru-Marine plans to continue collaboration on, and investment in, research and development work and presently allocates around 3% of its sales revenue towards this every year. It is also committed to further automation of its processes and believes this goes hand-in-hand with digital transformation. The business has already applied robotics and increased automation to its repair processes and is now developing its warehouse operations to process digital orders.
Having exhibited at Asia Pacific Maritime in March this year and Posidonia in June, Tru-Marine will next be represented at SMM 2018 in Hamburg, Germany, 4-7 September.