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- October 27, 2025
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It is observed that cracks repair in cast iron components develop due to exposure to excessive heat or mechanical failures. Sometimes it is difficult to arrange for the new part due to long delivery or exorbitant price.
RA Power Solutions undertakes the repair of cracked cast metal or aluminium components by metal stitching and the metal locking process. It provides permanent crack repair solutions without the generation of heat associated with the welding process. The main advantage of repairing cracked or damaged cast iron or aluminium components with metal stitching and metal locking is that technicians can perform the work onsite, which avoids the high cost of labour for equipment disassembly and transport to a workshop.
The repair of cracks cast metal by metal stitching and metal lock process restores the surface area to the original dimensions and profile. Very rarely there is a requirement for machining. The repairs are also watertight and gas-tight.
RA Power Solutions with experience of more than four decades. We have experienced technicians who have undertaken the most complex crack repair jobs through metal stitching and metal lock processes. The technicians carry pneumatic portable tools and consumables to the site. We have executed thousands of repairs of cracked components, a broad description of which is as follows:
- Repair heavy earthmoving and mining machinery.
- Repair of high-capacity turbines, alternators, turbocharger casings, and parts.
- Cracked engine blocks, cylinder heads, pistons, and cylinder liners.
- Heavy-duty industrial machine.
The consumables used by RA Power Solutions for the repair of cracked cast metal by metal stitching and metal lock have the following properties, which result in permanent repair with a guarantee.
I) Locks:
The locks of different designs are used in the process of repairing cracks by metal lock and metal stitching according to the intensity of the crack, length and thickness of the casting.
The locks used by us are made of precision-cut high-grade steel and are able to withstand high tensile forces more than the original casting.
II) Stitching Pins:
The stitching pins used by us have special threads which make the process failure-free. The pins are manufactured out of high-grade steel and have higher tensile strength than the cast iron.
For your requirement of crack repair on-site in a Power Plant or onboard a vessel, you may contact RA Power Solutions. All our technicians have valid CDC and can fly to any destination in the world on short notice.
For more details on fixing a cracked engine block, metal surgery process, repairing cracks cast iron, engine block repair, crack repair of components, and cast iron engine block crack repair, please email us at rajshahani@rapowersolutions.com, or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.
FAQs:
A:This cold-repair method uses steel locks or stitching pins that technicians mechanically insert into drilled holes along a crack. The process does not use heat.
A: Yes, metal stitching restores structural integrity, and when done properly, the repaired area can be watertight or gas-tight and as strong (or stronger) than the original casting.
A: Not necessarily. A key advantage is that technicians can perform many repairs on-site, even onboard vessels or in remote plants, using portable tools. This approach avoids the cost of disassembly and transport.
A: Cast-iron engine blocks, cylinder heads, cylinder liners, turbocharger casings, pump and compressor housings, turbine casings, gearbox housings, essentially most heavy cast-metal components in marine, industrial and power-plant applications.
A: Yes, because metal stitching avoids heat-related distortion or stress, preserves the original geometry, offers permanent and strong repair, and usually takes less time and cost compared to replacing or welding castings.