FIELD: metallurgy.
SUBSTANCE: proposed sheet can be produced on taking that a1 (mcm) makes the depth of insulation coat film at the depth of linear grooves and a2 (mcm) defines the depth of insulation coat film at steel sheet surfaces other than linear grooves when a1 and a2 satisfy the following equations: 0.3 mcm≤a1≤3.5 mcm and a1/a2≤2.5.
EFFECT: reduced local curling of coat film, high rust resistance and insulation properties.
2 cl, 1 dwg, 1 tbl, 1 ex
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Authors
Dates
2014-08-27—Published
2011-09-28—Filed