Roll for Metal Processing, in Particular a Continuous Casting Roll, and Method of Producing Such a Roll

Abstract

The invention relates to a roll ( 1 ) for metal production and/or metal processing, in particular a continuous casting roll, which has a roll parent body ( 2 ) of metal and a coating ( 3 ) of wear-resistant material applied to said roll parent body ( 2 ). In order to make the roll, in particular the continuous casting roll, especially wear-resistant, the invention provides for the coating ( 3 ) to have electrolytically applied nickel, wherein the surface ( 4 ) of the coating ( 3 ) forms the working surface of the roll ( 1 ). Furthermore, the invention relates to a method of producing a roll ( 1 ) for metal production and/or metal processing, in particular a continuous casting roll.

1 . A roll ( 1 ) for metal production and/or metal processing, especially a continuous casting roll, which has a roll body ( 2 ) made of metal and a coating ( 3 ) of wear-resistant material applied on the roll body ( 2 ), where the coating ( 3 ) contains electrodeposited nickel and where the surface ( 4 ) of the coating ( 3 ) forms the working surface of the roll ( 1 ), wherein, besides nickel, the coating ( 3 ) contains ceramic particles ( 5 ), which are carbides of titanium (Ti), tantalum (Ta), tungsten (W), zirconium (Zr), boron (B), chromium (Cr), and/or silicon (Si), or oxides of aluminum (Al), chromium (Cr), silicon (Si), beryllium (Be), or zirconium (Zr), where the amount of ceramic particles ( 5 ) in the nickel or nickel alloy is 15-40 vol. %. 
     
     
         2 . A roll in accordance with  claim 1 , wherein the amount of ceramic particles ( 5 ) in the nickel or nickel alloy is 25-30 vol. %. 
     
     
         3 . A roll in accordance with claim, wherein the thickness (D) of the coating ( 3 ) is 0.01 mm to mm, and preferably 0.05 mm to 2 mm. 
     
     
         4 . A roll in accordance with  claim 1 , wherein the coating ( 3 ) consists of pure nickel. 
     
     
         5 . A roll in accordance with  claim 1 , wherein, besides nickel, the coating ( 3 ) contains one or more of the constituents cobalt (Co), phosphorus (P), iron (Fe), zinc (Zn), copper (Cu), manganese (Mn), and chromium (Cr). 
     
     
         6 . A roll in accordance with  claim 5 , wherein the coating ( 3 ) consists of a nickel-cobalt alloy in which ceramic particles ( 5 ) of silicon carbide are incorporated. 
     
     
         7 . A roll in accordance with  claim 1 , wherein the particle size (d) of the ceramic particles ( 5 ) is 1-5 μm. 
     
     
         8 . A roll in accordance with  claim 1 , wherein the particle size (d) of the ceramic particles ( 5 ) is 10 nm to 1,000 nm. 
     
     
         9 . A roll in accordance with  claim 1 , wherein the hardness of the surface ( 4 ) of the coating ( 3 ) is 300-500 HV1 and preferably 350-450 HV1.