Steel sheet coated with chemical conversion film and process for producing the same
First Claim
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1. A process for producing a steel sheet coated with a chemical conversion film, comprising:
- coating either one side or both sides of a steel sheet with a treating liquid comprising silica particles and an acid ingredient; and
drying the applied treating liquid by heating to thereby form a coating film comprising a reaction product of the silica, the acid ingredient and one or more metals in the steel sheet.
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Abstract
The present invention provides a process for producing a steel sheet coated with a chemical conversion film, comprising: coating either one side or both sides of a steel sheet with a treating liquid comprising silica particles and an acid ingredient; and drying the applied treating liquid by heating to thereby form a coating film comprising a reaction product of the silica, the acid ingredient and one or more metals in the steel sheet.
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7 Claims
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1. A process for producing a steel sheet coated with a chemical conversion film, comprising:
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coating either one side or both sides of a steel sheet with a treating liquid comprising silica particles and an acid ingredient; and
drying the applied treating liquid by heating to thereby form a coating film comprising a reaction product of the silica, the acid ingredient and one or more metals in the steel sheet. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification