Metal working – Method of mechanical manufacture – Roller making
Patent
1990-10-16
1992-12-01
Echols, P. W.
Metal working
Method of mechanical manufacture
Roller making
B21B 3108
Patent
active
051670682
ABSTRACT:
The present invention concerns a roll used in the manufacture of paper, for example a central roll in a press or a calender roll, with which the web is in direct contact and from which the web is detached. A coating has been formed onto a cylinder mantle of the roll, the coating being partly made of metal and also including a ceramic material. An outer face of the coating is formed of carbide-rich areas and of matrix areas placed between the carbide-rich areas. The present invention also concerns a method for manufacturing such a roll.
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"Powder Metallurgy", Schwartzkopf, The Macmillan Company, 1947, pp. 195-223.
Leino Jorma
Miihkinen Veijo
Salo Jukka
Telama Ari
Echols P. W.
Hughes S. Thomas
Valmet Paper Machinery Inc.
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