Bolt heating
The use of induction heating for bolt expansion is the proven time and labour-saving alternative to inefficient flame and resistance heating.
Introduction
Expanding bolts with induction uses precise and localised heat, and is faster and safer than resistance or flame heating. With induction, a specially designed coil is inserted into the bolt. Rapid, precisely controlled and localised heat is then induced directly in the bolt. The heat expands the bolt by an exact, predetermined length, making it easy to remove the nut.
- Only heats the part you want to heat
- Bolt threads with nuts stay cold during the heating operation
- No risk of rods melting inside the bolts
Induction heating is increasingly used to remove the giant nuts and bolts in power stations' turbines.
Image gallery
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Bolt heating on tower foundation
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The use of induction heating for bolt expansion in high-pressure turbines is a powerful business tool.
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Induction heating is a time and labour-saving alternative to inefficient flame and resistance heating for oil and gas processing plants, chemical plants and power stations.
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An operator inserts a specially designed induction coil into the bolt.
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The end result of a quick and safe induction bolt heating: An exposed turbine is ready for maintenance.
