Global Patent Index - EP 1098714 A1

EP 1098714 A1 2001-05-16 - COMPOSITE BLADE, CAPABLE OF BEING USED IN DIFFERENT TECHNICAL OR INDUSTRIAL FIELDS, IN PARTICULAR IN THE PAPER INDUSTRY AND PRINTING

Title (en)

COMPOSITE BLADE, CAPABLE OF BEING USED IN DIFFERENT TECHNICAL OR INDUSTRIAL FIELDS, IN PARTICULAR IN THE PAPER INDUSTRY AND PRINTING

Title (de)

KOMPOSIT-RAKEL, INSBESONDERE FÜR DIE PAPIERINDUSTRIE UND DAS DRUCKGEWERBE

Title (fr)

LAME COMPOSITE, POUVANT TROUVER APPLICATION DANS DIFFERENTS DOMAINES TECHNIQUES OU INDUSTRIELS, NOTAMMENT DANS L'INDUSTRIE PAPETIERE ET L'IMPRIMERIE

Publication

EP 1098714 A1 (FR)

Application

EP 99926546 A

Priority

  • FR 9901540 W
  • FR 9808433 A

Abstract (en)

[origin: FR2780318A1] A composite blade (1) or component has interface coating layers of a crystalline or amorphous 'magnelie' type ceramic phase containing stoichiometric titanium oxide, nitride and/or carbide. A composite blade (1) comprises a backing strip (2) having an interface coating (3) for sliding contact with a moving medium (4), the interface coating (3) having a microscopic lamellar structure of \}15 microns thick coherent individual layers, two or more of which consist mainly of a crystalline or amorphous 'magnelie' type ceramic phase containing one or more sub stoichiometric titanium compounds of formula TiOy (y = 1.8 to less than 2), TiNz (z = 0.5 to less than 1) and/or TiCx (x = 0.5 to less than 1). Independent claims are also included for the following: (i) a component comprising a substrate and an interface coating as described above; and (ii) a process for making the above composite blade by repeated HVOF (high velocity oxy-fuel) spraying of source material, using a sub stoichiometric quantity of oxygen relative to the fuel, onto the cleaned face (2a) of a strip (2) having a dressed edge (3a) to obtain two or more interface coating layers. Preferred Features: The layers also contain a small amount of metallic titanium. Each individual layer is 1-15 (especially 3) microns thick in the active zone of the blade. The lamellar material of the interface coating has a density of \- 4000 (especially 4050-5000) kg/m<3> and the coating has a hardness of \- 700 (especially 1000) HV. The bending flexibility of the blade, expressed as the minimum diameter of a roller on which the blade can be wound without cracking of the coating, is \- 25 (especially 30) cm. The coating may adhere directly onto the strip or may be bonded by an intermediate adhesive layer. The spraying step is repeated 50-300 (especially 200) times.

IPC 1-7 (main, further and additional classification)

B05C 11/04

IPC 8 full level (invention and additional information)

B05C 11/04 (2006.01); B41F 9/10 (2006.01); B41F 35/00 (2006.01); C23C 4/02 (2006.01); C23C 28/04 (2006.01); D21G 3/00 (2006.01); D21H 25/10 (2006.01)

CPC (invention and additional information)

C23C 28/044 (2013.01); B05C 11/045 (2013.01); B41F 9/1072 (2013.01); B41F 35/00 (2013.01); C23C 4/02 (2013.01); C23C 28/04 (2013.01); D21G 3/005 (2013.01); B41N 10/005 (2013.01); B41P 2235/21 (2013.01); D21H 25/10 (2013.01)

Citation (search report)

See references of WO 0000296A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

FR 2780318 A1 19991231; FR 2780318 B1 20000908; AU 4375599 A 20000117; EP 1098714 A1 20010516; WO 0000296 A1 20000106

INPADOC legal status


2002-07-03 [18R] REFUSED

- Effective date: 20011216

2001-08-01 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010618

2001-05-16 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20001221

2001-05-16 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE