(19)
(11) EP 0 304 607 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
02.11.1989 Bulletin 1989/44

(43) Date of publication A2:
01.03.1989 Bulletin 1989/09

(21) Application number: 88111414.4

(22) Date of filing: 06.11.1984
(51) International Patent Classification (IPC)4: B05B 7/20, B22D 11/06, B05B 13/04
// C23C4/14
(84) Designated Contracting States:
AT BE DE FR GB IT

(30) Priority: 07.11.1983 US 549752
07.11.1983 US 549652
07.11.1983 US 549653

(62) Application number of the earlier application in accordance with Art. 76 EPC:
84113365.5 / 0144769

(71) Applicant: HAZELETT STRIP-CASTING CORPORATION
Colchester Vermont 05446 (US)

(72) Inventors:
  • Bergeron, Norman J.
    Burlington Vermont 05401 (US)
  • Szczypiorski, Wojtek S.
    Colchester Vermont 05446 (US)
  • Villa, James G.
    Hinesburg Vermont 05461 (US)
  • Hazelett, S. Richard
    Provo Utah 84601 (US)
  • Hazelett, R. William
    Colchester Vermont 05404 (US)
  • Boozan, Dean A.
    Vermont 05492 (US)
  • Brennan, Thomas E.
    South Hero Vermont 05486 (US)

(74) Representative: VOSSIUS & PARTNER 
Postfach 86 07 67
81634 München
81634 München (DE)


(56) References cited: : 
   
       


    (54) Apparatus for making matrix coatings


    (57) An apparatus for making fusion-bonded matrix coatings on endless, flexible metallic casting belts for continuous casting machines is described. The fusion-bonded matrix coating comprises a nonmetallic refractory material interspersed substantially uniformly throughout a matrix of heat-resistant metal or metal alloy, for example nickel or nickel alloy. The coating is applied to a revolving belt (10,20) being supported and driven by pulleys (34,36) in a machine by thermally spraying a powdered mixture directly onto the roughened casting surface of the belt. The machine holds the revolving belt under tension and applies cooling to the rear surface of the revolving belt (10,12) opposite to the region where the thermal spray gun (66) is applying the coating to the belt (10,20), and causes the thermal spray gun (66) to traverse uniformly traversely across the belt. The result is to insulate and protect the underlying belt from intimate molten metal contact. The life of the coated belts is dramatically in­creased, and the surface quality and properties of the cast product are significantly improved.







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