Thermal spray application of polymeric material

(19)

(11)

EP 0 988 898 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	02.05.2001 Bulletin 2001/18

(43)	Date of publication A2:
	29.03.2000 Bulletin 2000/13

(21)	Application number: 99307426.9

(22)	Date of filing: 20.09.1999

(51)	International Patent Classification (IPC)⁷: B05D 1/08, B05D 1/10

(84)	Designated Contracting States:
	AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
	Designated Extension States:
	AL LT LV MK RO SI

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Priority:

23.09.1998 US 159060

(71)	Applicant: CAMCO INTERNATIONAL INC.
	Houston, Texas 77054 (US)

(72)	Inventors:
	Tan, Thiam Hock Francis Singapore 529946 (SG) Taylor, Michael L. Singapore 669495 (SG) Tan, Boon Hee Singapore 560427 (SG)

(74)	Representative: Bailey, Richard Alan
	A.R. Davies & Co., 27 Imperial Square Cheltenham, Gloucestershire GL50 1RQ Cheltenham, Gloucestershire GL50 1RQ (GB)

(54)	Thermal spray application of polymeric material

(57) A PEEK composite may be applied to a metallic substrate (32) through an HVOF process. The metallic substrate (32) is prepared with a metallic bonding layer (34) that is arc sprayed onto its surface. A powderized PEEK composite material (36) is then heated and propelled against the substrate (32) and bonding layer (34) by a high velocity oxy fuel technique to uniformly coat the substrate (32). Following the HVOF process, the PEEK coating is annealed to provide a durable, PEEK-coated substrate.

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