Method of manufacture of a roll for use in paper production

Details Method of manufacture of a roll for use in paper production Method of manufacture of a roll for use in paper production

1992-03-03

1993-08-17

Rosenbaum, Mark

Metal working

Method of mechanical manufacture

Roller making

B21B 3108

Patent

active

052357473

ABSTRACT:
The invention concerns a roll for use in the production of paper, in particular a center roll in a press section of a paper making machine, with which the web is in direct contact and from which the web is detached. In the invention, a composite structure has been formed onto the cylinder mantle of the roll. According to the invention, the roll face is provided with a surface layer which protects the roll from wear and which provides good properties for detaching of the web, this surface layer being formed by thermal spraying of a powder wherein metal and ceramic phases are in the same powder particle. The roll face is additionally provided with a dense layer for protection against corrosion, which layer is made of stainless steel whose chromium content is 10 to 29% and which layer is placed between the surface layer and the roll mantle. The function of the layer for protection from corrosion is to protect the roll mantle from corrosion and to promote the adhesion of the surface coating to the roll. The invention also concerns a method for the manufacture of the roll.

REFERENCES:
patent: 4447501 (1984-05-01), Shigeru et al.
patent: 4609577 (1986-09-01), Long
patent: 4793041 (1988-12-01), Jenkins et al.
patent: 4796342 (1989-01-01), Miihkinen
patent: 4912835 (1990-04-01), Harada et al.
patent: 4991501 (1991-02-01), Yokohama et al.
patent: 5070587 (1991-12-01), Nakahira et al.

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