RE: Shrink fitting of coated shafts using low temperatures
Dear Vijay,
You can try with dry ice.Time for treatment shall depend on the dia. of shaft.
For theoretical calculations for optimum sub-zero temperture you need to use co-efficient of thermal expansion data in the low temperature range for the given material.
I would be careful about the surface preparation(Ra values),alignment during fitting etc, remembering the basics that the spray coat can crack or spall due to impact or bending or point load.
ram chattopadhyay
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