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On site  Metal stitching  and  metal locking  is a precise mechanical method of making permanent repairs to broken casting and machine parts. Procedure of On site Metal Stitching and Metal Locking Drilling fixture is attached of right angles to the crack. A hole pattern is drilled and this is repeated at intervals from ¾ to 1 ¼ inches apart in this process of  metal stitc hing metal locking . Metal between each drilled hole is removed by ripping it away with pneumatic tools to form a slot. The stock thus removed is narrower than the drilled hole, thus forming a serrated opening. Preformed locks of high tensile alloy are inserted in to the slot of  metal locking and  metal stitching  process . These locks are peened into the slots, one on top of the other, to a depth limited by the casting thickness and determined by the strength required. After the locks are installed, holes are drilled, tapped and threaded, fasteners are applied. These are spotted along the entire length of the crack,

RA Power Solutions was informed by one of our client regarding failure of Crankpin no. 6 of AE#2 of MAN  9 ASL 25/30 Model Engine.  The Engine details are as following:   S. NO  Crankshaft Details   1  Engine Make MAN 2 Engine Model 9 ASL 25/30 3 Crank pin Diameter Standard 195 mm 4 Crankpin Bearing Width 77 mm   Our technicians boarded the vessel at Mumbai port and performed an evaluation of the crankshaft.  Following were the main observations: Inspection & observation of MAN 9 ASL 25/30 crankshaft of engine no. 2 crank pin no. 6: i) During the visual inspection of crankpin  it was observed that the crank pin bearing got melted and was badly embadded on the crankpin.  ii) The crankpin bearing was removed and was found badly damaged. It was a serious accident as the bearing was burnt which

Metal Stitching  is a proven process of doing permanent repairs to machine parts or it is a method of repairing castings without use of heat.  This method is a technologically advanced process utilized on cast iron components such as engine block, turbo casing, gear box etc.  As no heat is generated in this technique thus, it is used in areas where welding is banned. The metal stitching process was developed in the late 1930s. The notable point of this process is that it provides a long-term repair for the heavy engineering components which are damaged or develop cracks due to serious accident.  It is performed using a proper series of steps to give the better outcome. Advantages: ·          On-site repair. ·          Takes less time for repair. ·          Excellent process to be followed in this modern world for engine block and heavy cast iron component repair. ·          A cold process. The process known as  Metal Locking  is done onsite. This includes s