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US 10,513,456 B2Granted
Heat-resistant roll, manufacturing method thereof, and plate glass manufacturing method using such heat-resistant roll
AssigneeNichias Corporation
InventorsKazuhisa Watanabe, Tetsuya Mihara
Life of this patent
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Abstract
A method for producing a heat-resistant roll, and a roll produced by the method, the method including: fabricating a roll part comprising 5 wt % or more of a clay mineral; grinding the roll surface of the roll part; conducting a surface treatment in which the ground roll surface is smoothed in a moisturized state; and forming a coating film of a clay mineral on the surface-treated roll surface.
Claims14
A heat-resistant roll comprising:
- a roll part that comprises disks, a cylindrical formed body or an inorganic fiber formed body;
- and
- a clay coating film that covers a surface of the roll part and the clay coating film being formed as a separate layer on the outer exterior surface of the roll part, wherein
- a clay mineral contained in clay water enters and fills a concave part of unevenness on the outer exterior surface, and the clay coating film adheres to the outer exterior surface,
- a smoothness represented by a maximum height Ry of a surface of the clay coating film is 4.50 μm or less,
- an arithmetic surface roughness Ra of the surface of the clay coating film is 5.0 μm or less, and a 10-point average roughness Rz of the surface of the clay coating film is 25.0 μm or less
- an amount of dusting is less than 0.05 mg/cm2,
- the disks, the cylindrical formed body or the inorganic fiber formed body comprises 5 to 50 wt % of a clay mineral uniformly, 20 to 50 wt % of an inorganic fiber and 5 to 50 wt % of a filler, and
- the clay coating film covers 80% or more of an entire outer exterior surface of the roll part.
6 more elements
Dependencies are inferred from the claim text.