C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
117/87
C23C 26/00 (2006.01) B21B 1/22 (2006.01) C23C 2/26 (2006.01) B21B 1/38 (2006.01)
Patent
CA 2022235
A B S T R A C T Drawing sheet with a metal coating on at least one side has on this side a roughness constituted by regularly distributed isolated wells. The wells have a depth of 5 to 25 µm and a base diameter of 80 to 200 µm; they are distributed with a density of 50 to 150 wells per linear inch in at least two perpendicular directions. The coated side has an arithmetic mean roughness Ra at the 0.8 mm cut-off of 0.5 to 2 µm, and the arithmetic mean roughness Ra of this side at the 8 mm cut-off differs by not more than 0.3 µm from the value of the arithmetic mean roughness at the 0.8 mm cut-off. The coating may consist of zinc, aluminum, or a zinc alloy.
Defourny Jacques
Monfort Guy
Terreur Frederic
Centre de Recherches Metallurgiques -Centrum Voor Research In de
Defourny Jacques
Marks & Clerk
Monfort Guy
Terreur Frederic
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