Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Weight per unit area specified
Patent
1994-08-02
1997-04-29
Thibodeau, Paul J.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Weight per unit area specified
428403, 428407, 428418, 428460, 428461, 428500, B32B 1508, B32B 2738, B32B 2700
Patent
active
056247494
ABSTRACT:
An electromagnetic steel sheet has an electrically insulating coating with superior weldability, formed by coating a treatment solution on the electromagnetic steel sheet and baking the same, the treatment solution containing a synthetic resin fine-particle emulsion having resistance against chromic and/or bichromic acid and exhibiting a peak temperature not lower than 400.degree. C. at which a weight change rate is maximized when a sample is heated at a constant rate in differential thermal gravimetry, a chromate and/or bichromate base aqueous solution containing at least one kind of two-valence metal, and an organic reducer. The steel sheet is superior in electrical insulation, adhesion, punching ability, weldability and corrosion resistance.
Kobayashi Hideo
Komori Yuka
Kosuge Norio
Mohri Taizo
Yokoyama Yasuo
Kawasaki Steel Corporation
Miller Austin R.
Sand Stephen
Thibodeau Paul J.
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