Manufacturing method of hydrophilic film, manufacturing method of precoated fin and manufacturing method of heat exchanger

摘要

Problem to be solved: to provide a method of producing a hydrophilic coating, a method of manufacturing an aluminum fin and a method of manufacturing a heat exchanger.The method of producing a hydrophilic coating according to the present invention is on an outer surface of an aluminum substrate made of aluminum or aluminum alloy γ－ A coating comprising a particle made of alumina particles or alumina hydrate is applied and dried to form a hydrophilic coating.Diagram