Aluminum heat exchanger coating
AssigneeNihon Parkerizing Co., Ltd.
InventorsHideaki Kaneko, Takao Ogino, Ryosuke Sako
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Abstract
A method for imparting wettability to an aluminum heat exchanger comprises immersing the heat exchanger in an aqueous medium containing a silanol compound and polyvinyl pyrrolidone. If desired, the exchanger may be conversion coated or anodized prior to the immersion.
Claims9
A method for manufacturing a heat exchanger having aluminum parts wherein the tubes and fins are assembled as a unit, the assembled unit is immersed in an aqueous medium containing a silanol compound and polyvinyl pyrrolidone, and thereafter the assembled unit is dried.
A heat exchanger comprised at least partly of aluminum and having on the surface thereof a coating containing a silanol compound and polyvinyl pyrrolidone in a weight ratio of 1:0.1-10.
Dependencies are inferred from the claim text.