Patent US4883264A successfully refreshed from Google Patents.
EP0230633A2
Expired / Lapsed
EP
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Friction roll with wear-resistant surface
Assignee: Union Carbide Corp
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Filing: 1986-12-19
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Granted: —
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Expires: 2006-12-19
Abstract
Abstract Friction rolls for working elongate members, e.g., webs or strands, such as crimper rolls, draw rolls, yarn package drive rolls comprising a roll having a generally cylindrical external surface and a ceramic, e.g., alumina, mixtures of alumina and titania, chromia, zirconia, or metallic carbide, e.g., tungsten carbide, coating bonded to the external surface, said coating being laser-engraved, that is, having a plurality of laser-formed depressions having a pattern covering substantially the entire exteriorworking surface of the roll and providing a uniform, wear-resistant surface texture over substantially said entire working surface.
Inventors
- 👤 Robert W. Meyerhoff
- 👤 Richard C. Hill
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 21:19
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/12; B; B21; B21B; B21B27/00; B21B27/005; B23; B23K; B23K26/00; B23K26/08; B23K26/0823; B41; B41N; B41N7/00; B65; B65H; B65H27/00; B65H54/00; B65H54/02; B65H54/40; B65H54/46; B65H57/00; B65H57/24; C; C23; C23C; C23C26/00; C23C26/02; B41N2207/00; B41N2207/02; B41N2207/10; B65H2404/00; B65H2404/10; B65H2404/18; B65H2404/181; B65H2404/50; B65H2404/52; B65H2404/521; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
60 words
A friction roll for performing work on an elongate solid material by frictional contact therewith comprising a roll having an external surface defining a working surface and a ceramic or metallic carbide coating bonded to said working surface, said coating having a plurality of laser-formed depressions having a pattern providing a substantially uniform, wear-resistant recast surface to said working surface.
Claim 2
Dependent Claim
60 words
A friction roll for performing work on an elongate solid material by frictional contact therewith comprising a roll having an external surface defining a working surface and a ceramic or metallic carbide coating bonded to said working surface, said coating having a plurality of laser-formed depressions having a pattern providing a substantially uniform, wear-resistant recast surface to said working surface.
Claim 3
Dependent Claim
36 words
A friction roll as claimed in claim 1 wherein said ceramic or metallic carbide coating is alumina, or a mixture of alumina and titania, or chromia, or a mixture of chromia and alumina, or tungsten carbide.
Claim 4
Dependent Claim
21 words
A friction roll as claimed in claim 1 wherein said ceramic or metallic carbide coating contains tungsten carbide, cobalt and chromium.
Claim 5
Dependent Claim
39 words
A friction roll as claimed in any one of claims 1 to 3 wherein said friction roll is a crimper roll or a draw roll or a yarn package drive roll or a friction pin or a guide pin.
Claim 6
Dependent Claim
95 words
Method of forming a friction roll for performing work on an elongate solid material by frictional contact with said elongate solid material, said roll having an external surface defining a working surface comprising the steps of bonding a ceramic or metallic carbide coating to said working surface and laser-engraving the coating on said working surface with a plurality of depressions having a pattern covering substantially the entire said working surface and said laser-engraving step providing a uniform, wear-resistant surface texture of recast coating formed by said laser-engraving step over substantially the entire said working surface.
Claim 7
Dependent Claim
95 words
Method of forming a friction roll for performing work on an elongate solid material by frictional contact with said elongate solid material, said roll having an external surface defining a working surface comprising the steps of bonding a ceramic or metallic carbide coating to said working surface and laser-engraving the coating on said working surface with a plurality of depressions having a pattern covering substantially the entire said working surface and said laser-engraving step providing a uniform, wear-resistant surface texture of recast coating formed by said laser-engraving step over substantially the entire said working surface.
Claim 8
Dependent Claim
28 words
Method as claimed in claim 5 wherein said ceramic or metallic carbide coating is sealed with a pore sealant after said bonding step and before said laser-engraving step.
Claim 9
Dependent Claim
26 words
Method as claimed in claim 6 wherein the resulting sealed ceramic or metallic carbide coating is ground after the sealing step and before the laser-engraving step.
Claim 10
Dependent Claim
32 words
Method as claimed in any one of claims 5 to 7 wherein said laser-engraving coating is subjected to brushing with an aqueous slurry of a finely divided abrasive after the laser-engraving step.
Claim 11
Dependent Claim
40 words
Method as claimed in any one of claims 5 to 8 wherein said ceramic or metallic carbide coating is alumina, or a mixture of alumina and titanium dioxide, or chromia, or a mixture of chromia and alumina, or tungsten carbide.
Claim 12
Dependent Claim
24 words
Method as claimed in any one of claims 5 to 8 wherein said ceramic or metallic carbide coating contains tungsten carbide, cobalt and chromium.
Claim 13
Dependent Claim
48 words
Method for performing work on an elongate solid material by frictional contact therewith comprising the step of causing said elongate solid material to frictionally contact said substantially uniform, wear-resistant recast coating on the working surface of the friction roll claimed in any one of claims 1 to 4.
Claim 14
Dependent Claim
21 words
Method as claimed in claim 11 wherein said friction roll is a crimping roll and said elongate solid material is tow.
Claim 15
Dependent Claim
58 words
In a device for performing work on an elongate solid material by frictional contact with a friction roll having a working surface, the improvement comprising a ceramic or metallic carbide coating bonded to said working surface, said coating having a plurality of laser-formed depressions having a pattern providing a substantially uniform, wear-resistant recast surface to said working surface.
Claim 16
Dependent Claim
58 words
In a device for performing work on an elongate solid material by frictional contact with a friction roll having a working surface, the improvement comprising a ceramic or metallic carbide coating bonded to said working surface, said coating having a plurality of laser-formed depressions having a pattern providing a substantially uniform, wear-resistant recast surface to said working surface.
Claim 17
Dependent Claim
21 words
Device as claimed in claim 13 wherein said friction roll is a crimping roll and said elongate solid material is tow.
References Cited (Backward Citations)
No citation records indexed.
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