The courtyard door of aluminum art door has shrunk due to cold. Can thermal expansion be restored?

The cold shrinkage of aluminum door may be caused by temperature change. When the temperature drops, the size of aluminum will shrink, which is called cold shrinkage. When the temperature rises, the size of aluminum will return to its original state, which is called thermal expansion.

If it is deformed, try to remove the deformed door frame and repair it again. You can directly find a carpenter to judge where the deformation has occurred and scrape off some irregularities.