Method for coating the circumferential surface of a cylindrical work piece

A piston (32) or similar cylindrical work piece is wear coated with a liquid coating material (12) comprised of a solid component carried by a volatile solvent. The coating material is applied, from a closed reservoir (10), by a synchronously rotated distribution roller (24), to a larger diameter co...

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Bibliographische Detailangaben
Hauptverfasser:	SCHWAB, MICHAEL J, ZHU, MINGGUANG, BAHUN, DOUGLAS, COCHRAN, THEODORE R, BISH, REBECCA E
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	APPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES BLASTING COMBUSTION ENGINES CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL PUMPS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS SEPARATION SPRAYING OR ATOMISING IN GENERAL TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	A piston (32) or similar cylindrical work piece is wear coated with a liquid coating material (12) comprised of a solid component carried by a volatile solvent. The coating material is applied, from a closed reservoir (10), by a synchronously rotated distribution roller (24), to a larger diameter coating roller (28) that is continually heated to a temperature sufficient to remove a majority of the solvent. Simultaneously, the piston workpiece (32) is pre heated to a comparable temperature before being engaged with the coating roller (28) under a relatively high pressure. A series of thin, pre dried layers is applied to the workpiece surface sufficient to produce the a final wear layer of a desired final thickness.