Category: cold metal stitching engine block

Cast Iron Crack Repair | Metal Stitching Crack Repair | Repairing Crack Cast Iron by Metal Stitching & Metal Lock – RA Power Solutions

Metal stitching and metal lock process of repairing a crack casting or complete damage of cast iron parts of large equipments is considered to be the ultimate solution of successful repair. The repair of cracks and repair of damaged casting by metal locking or metal stitching process is simple and most effective method of repairing cracks in cast iron and aluminium components. The process is entirely a cold process and no heat is generated like in process of crack repair or damage casting repair by conventional and old method of welding.

RA Power Solutions having experience of more than forty years in providing cold metal stitching cast iron, onsite repair, and metal locking services for high-capacity main engine, auxiliary engine, and large and heavy rotary equipment installed on vessel or in industry. We extend crack repair services through our experienced and factory-trained technicians.

The following are the main features of crack repair undertaken by RA Power Solutions:

  • Detection of crack in cast iron or aluminium components: It is important that proper procedure is followed by experienced technicians to detect the exact location, length, and intensity of the crack. We have experience that in most of cases, no procedure is followed to identify the intensity of the crack which results to the failure of the component even after the repair by metal lock and metal stitching.
  • RA Power Solutions possess latest equipment to undertake MPI (Magnetic Particle Inspection) by qualified level 2 technicians, and we give great importance to the detection process of the cracks. The unattended cracks can grow and result to the failure of the component.
  • Once the number of cracks, length of crack, intensity, and depth of crack is determined and identified the repairs are undertaken by the metal stitching and metal lock process.

Some of the advantages of repairing cracks by metal stitching metal lock are mentioned below:

  • It is our experience that the majority of repairs of damaged components or cracks can be repaired on site with no requirement of dismantling the equipment. This reduces the downtime and of course the cost involved in dismantling and transportation of the equipment.
  • Repair of cracks and repair of damaged gray iron casting or aluminium by metal stitching and metal lock process does not generate any heat. Thus, it does not require any machining process. No alignment or profile is damaged.
  • In the case of diesel engines, compressors, or rotatory equipment majority of the parts are of aluminum or cast iron. It is possible to repair them by metal stitching metal lock process. Hence, no need of replacement of parts. It reduces cost of maintenance considerably.
  • Repair of crack by metal stitching metal lock process absorbs compression stresses which is of great advantage.

RA Power Solutions have been extending metal stitching, metal lock, and metal surgery services all over the world. The technicians with years of experience come to your site or on board the vessel for repairs. Our technicians possess Indian CDC and can board the vessel and sail in shortest possible time. Thousands of jobs of serious damage have been repaired successfully by RA Power Solutions.

For more information about cold metal stitching, metal stitching crack repair, cast iron metal stitching, repair of crack in cast iron casting, repairing cast iron metal lock, and metal locking services, please email us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

Metal stitching and metal lock process of repairing a crack casting or complete damage of cast iron parts of large equipments is considered to be the ultimate solution of successful repair. The repair of cracks and repair of damaged casting by metal locking or metal stitching process is simple and most effective method of repairing … Continue reading “Cast Iron Crack Repair | Metal Stitching Crack Repair | Repairing Crack Cast Iron by Metal Stitching & Metal Lock – RA Power Solutions”

Metal Stitching | Metal Locking | Metal Stitching of Engine Block | Repair of Cast Iron by Metal Stitching – RA Power Solutions

High-capacity engine and rotatory equipments have the components made of Cast Iron and Cast Steel. In case of any damage and development of crack in olden times, the option was either to replace the component which used to work out very expensive or to repair it by welding process. Which was not always successful.

With the improvement in repair technology now, it is possible to repair the crack in cast iron, steel, or aluminium component by metal stitching and metal locking process. The main feature of repair of crack or damaged casting by metal stitching, metal locking, and metal surgery is that process does not require disassembly of the equipment and taking the crack or damaged part to the workshop.

Damage Area of Engine Block
Damage Area of Engine Block
New Casting Inserted for Repair of Engine Block
New Casting Inserted for Repair of Engine Block

RA Power Solutions has the team of experience technicians. They can travel to the site with tools and consumables required for metal stitching and metal locking and undertake the repair. The original profile after crack repair by metal locking and metal stitching is maintained and in most cases, no machining is required. It is scientifically proved that crack portion of the component which is repaired by metal locking and metal stitching process has more tensile strength.

RA Power Solutions with the experience of forty years in this field extends metal locking and metal stitching services for repair of damaged casting. The repair can also be executed while sailing of vessel. We are considered to be lowest in the cost in comparison to our competitors.

Metal Stitching | Repair Cast Iron | Cast Iron Repair

Get your crack or broken components manufactured out of cast iron, cast steel or aluminium repair by metal stitching and metal locking process. RA Power Solutions with experience of more than four decades have successfully repaired thousands of major engine components and components installed in heavy industries all over the world.

The damage to the component may be serious, or the cracks are multiple. RA Power Solutions engineers have the experience, know how and necessary tooling to execute the most complicated and serious damage which takes place due to accidents in cast iron, cast steel and aluminium casting. We have successfully executed a pillar of forging machine weighing 40 tons. This job was done more than 15 years back, and we saved the forging plant imported from Poland from rejection.

For more information on cold metal stitching engine block, cast iron engine block repair, metal stitching surgery, metal stitching engine block, repair cast iron, and metal stitching of engine block please email us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

Metal Stitching & Metal Locking of Engine Block Under Process
Metal Stitching & Metal Locking of Engine Block Under Process
Metal Stitching of Engine Block by Special Keys & Locks
Metal Stitching of Engine Block by Special Keys & Locks

High-capacity engine and rotatory equipments have the components made of Cast Iron and Cast Steel. In case of any damage and development of crack in olden times, the option was either to replace the component which used to work out very expensive or to repair it by welding process. Which was not always successful. With … Continue reading “Metal Stitching | Metal Locking | Metal Stitching of Engine Block | Repair of Cast Iron by Metal Stitching – RA Power Solutions”

Metal Stitching and Thread Repair Inserts – RA Power Solutions

RA Power Solutions was informed by one of our client regarding damage of cam case cover of MAN diesel engine on board a vessel sailing near China. The details including photographs were examined, and it was observed while the cam case cover was broken into pieces the threads on the engine body and the dowel pin were also damaged.

Cracked Housing of Engine Block
Cracked Housing of Engine Block
Broken Area
Broken Area
Damaged Upper Threads
Damaged Upper Threads

RA Power Solutions deputed their team of technicians on board the vessel, and they executed the repair of engine block, cam case cover sitting area by the following procedure:

  • The broken bolt which remained inside the thread hole was drilled out.
  • The damaged threads on cam cover sitting area on entablature was removed by drilling new blind holes, suiting the new M12 Helicoil thread inserts.
  • Re-tap holes for the new M12 Helicoil thread inserts was done carefully.
  • New M12 Helicoil thread inserts were installed in the engine frame/ entablature.
  • The 2 guide pins for the roller guide housing were removed, taking due precaution.
  • New roller guide housing was installed, with correct M12 hexagon bolts and including the newly introduced 10 mm washers.
  • After final alignment of the roller guide housing, the bolts were tightened with the correct tightening torque.
  • Finally, the two ø8 mm guide pinholes were drilled in both roller guide housing and engine frame and afterwards new guide pins were installed.
repair of Threads on Engine Block Under Process
repair of Threads on Engine Block Under Process
Repair of Thread Hole by Metal Stitching
Repair of Thread Hole by Metal Stitching

The repair of threads by thread repair inserts (helicoil inserts) proved to be successful as the engine is performing satisfactory and no oil leakage is observed. The shipping company owners were asked to replace the complete engine block by the manufacturers as per them it was not possible to execute this kind of repair.

Damaged Thread Hole Under Metal Stitching and Metal Locking
Damaged Thread Hole Under Metal Stitching and Metal Locking
Metal Stitching of Bottom Area of Threaded Hole to Give Extra Strength
Metal Stitching of Bottom Area of Threaded Hole to Give Extra Strength

The above job was successfully executed by a team of experienced and dedicated team of RA Power Solutions.

The author is Mr. Raj Shahani Managing Director of RA Power Solutions having experience of almost four decades of working on high-capacity diesel engines, turbines and rotary equipments. The company specializes in executing the repairs i.e. metal stitching and metal locking, cold metal stitching engine block, grinding and repair of crankshafts, rebabbitting of bearings, connecting rod reconditioning, and overhauling of Engines which have serious problem resulting to the immense saving to the owners.

Cam Cover Sitting Area of Engine Block After Repair
Cam Cover Sitting Area of Engine Block After Repair

For more on metal stitching and metal locking, metal stitching of engine block contact us today email us at rajshahani@rapowersolutions.com, info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

RA Power Solutions was informed by one of our client regarding damage of cam case cover of MAN diesel engine on board a vessel sailing near China. The details including photographs were examined, and it was observed while the cam case cover was broken into pieces the threads on the engine body and the dowel … Continue reading “Metal Stitching and Thread Repair Inserts – RA Power Solutions”