Here is the process that we follow, using good engineering principles to ensure a reliable job when sleeving a brake cylinder   

Mechanical Integrity --

1. The original cylinder must be able to be bored to an extent allowing a sleeve to be inserted without danger of penetrating the original cylinder wall during boring process. boring operation must be done in a fixture to ensure concentricity

2. Modulus of elasticity and tensile strength of material must be considered so that residual stresses will not compromize unit strength, yet maintain sufficient stress to eliminate slippage in use.  Ratio of coefficient of expansion to thermal conductivity must be low to control buckling in use.

3. The sleeve must be of a wall thickness and material characteristic such that it will not exert a damaging stress on the original cylinder after the shrink expansion bearing in mind #2 above.

4. Residual interference fit (difference between calculated diameters of bore and sleeve at ambient working temperature) must be of a value ensuring that the stress considerations of  items 2 and 3 above are not exceeded.  

5. Cylinder must be uniformly heated to guard against thermal shock or over- temperature damage during the expansion process.   

6. Sleeve must be cryogenically cooled uniformly to minimize need for excessively hot temperatures on the cylinder and provide shrinkage so the sleeve will be slightly compressed by the cylinder at working temperatures.

7. Immediate installation of sleeve into cylinder must be done with an arbor to ensure concentricity and prevent distortion.

8. Interference fit and thermal coefficients of expansion of the materials must be calculated such that the cylinder cannot expand away from the sleeve during normal operating temperatures.

9. Original bore size must be preserved after the operation.

10. Corrosion control must be maintained.  In the case where dissimilar metals must be used, which is often, the cylinder bore and the sleeve wall must be scrupulously clean and free of electrolyte forming contaminants to provide an essentially anaerobic and gas-tight joint.