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Guidelines for crankshaft repairs

Guidelines for crankshaft repairs. Experience transfer & knowledge sharing Jonas Gustavsson/Gard & Steffen Fischer/SCUA Hamburg. Background, 2 skiers with Diesel repairs as a hobby. The project- short recap. A project by Jonas Gustavsson/Gard & Steffen Fischer/SCUA

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Guidelines for crankshaft repairs

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  1. Guidelines for crankshaft repairs Experience transfer & knowledge sharing Jonas Gustavsson/Gard & Steffen Fischer/SCUA Hamburg

  2. Background, 2 skiers with Diesel repairs as a hobby

  3. The project- short recap • A project by Jonas Gustavsson/Gard & Steffen Fischer/SCUA • The final paper to be a SCUA Hamburg brand ”product” • Objectives;1. Heattreatment, a repair method accepted by Class2. Collect info. & data to produce ”Guidelines to crankshaft repairs” • Sponsered by leading Scandinavian Marine UW’s, budget 30k€ • Gard, NHC, Gerling & Alandia

  4. Annealing Process, known Service providers • Goltens, long experience of mobile machining & in-situe repairs. • Successfully annealed over 75 crankshafts In-Situ and in workshops, during the past 7 years. • Wärtsilä, long experience of mobile machining & in-situe repairs. • Successfully annealed more than 50 crankshafts In-Situ and in workshops, during the past 7 years. • Have also evaluated induction heating (spot heating).

  5. Goltens Approval Certificate 2012-09-04

  6. Status and next steps • Heat Treatment in situ in our opinion reliable proven as to be the favourable repair method. • The Class approval for Goltens repair procedure a good step ahead. • Next, approval from other IACS members • Find time to continue with the guidlines (less skiing) • Low inflow of applicable cases, 2 cases reported in 2 years....has crankshaft failures ended ?? • Interesting NHC case in S.Korea currently, Steffen attending

  7. Main Engine damage trends 2 & 4 stroke Main propulsion machinery 2002 – 2011, Gard H&M portfolio

  8. How to fix a ME damage…..

  9. Glue it !

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