Removal of fan main shaft
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What to do if the main shaft and impeller of the fan cannot be removed? The impeller hub was heated red with oxygen yet it still wasn’t removed – does anyone have a good solution?
A fixture was made using channel steel and jacks, and then two welding torches were used to heat it simultaneously; it couldn’t be removed
When baking, be sure to avoid the shaft; if it is baked together with the shaft, the shaft will also expand, and in that case it’s better not to bake it at all. Also, bake a few more batches **at the same time
Use a screw rod and jack to heat the impeller
This fixture is quite good – it allows for baking the impeller while simultaneously tightening the fixture screws; once they are tight enough, hitting the tip of the screw with a hammer will allow it to be removed