Cast Iron Repair
The repair of broken or cracked castings or cast steel always holds a great challenge, since cast iron can only be welded to a certain extent. Therefore, ARNOLD offers a cold process, the cast iron repair. This avoids thermal stress problems, as for example through welding and preserves the original alignment.
The proven 80-year-old cast iron repair, also known as interlocking technology, can be performed directly on a component on-site. The component does not have to be dismounted for repair.
Repair method:
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01.
Analysis of the crack
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02.
Component is realigned and held in position
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03.
Groups of holes are drilled across the fracture line using special drilling templates
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04.
Connection of the individual holes by means of compressed air chisel
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05.
Special ledgers are inserted into the openings and positively caulked
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06.
Drilling of further threaded holes and caulking along the fracture line with grub screws
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07.
Pressure-tight connection due to interlocking of individual pins
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08.
Removal of the remaining raw metal with the compressed air chisel
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09.
Fine grinding of the entire repair area
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10.
New painting
Advantages:
- NO disassembly of the broken component
- NO temperature stress and thermal distortion on components
- NO deformation of the components
- Steaming and absorption of compressive stress
- Low expansion coefficient of the repaired metal
- Preservation of the alignment as well as the original surface
- Cost savings through shorter downtimes
- Cost savings because no purchase of new and expensive castings needed