Steel sheets and method of treating steel sheets
AssigneeToyo Kohan Co., Ltd.
InventorsNobuyuki Tsutsui, Hitoshi Omura, Takashi Mizobe, Katsumi Kanda, Terunori Fujimoto
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Abstract
A method of treating steel sheets which have good corrosion resistance after forming, which comprises coating a steel sheet with a solution which contains: (a) water-soluble or water-dispersible lithium silicate at a concentration of 2 to 250 g/l, which lithium silicate is a mixture of silicic acid or silicate and lithium salt in a molar ratio of 20:1 to 1:1. (b) at least one water-soluble or water-dispersible saturated or unsaturated fatty acid compound, higher alcohol wax, polyethylene type resin, fluorine type resin or silicone type resin at a concentration of 1 to 250 g/l.
Claims13
A method of treating steel sheets which have good corrosion resistance after forming, which comprises coating a steel sheet with an effective amount to inhibit corrosion, of a solution which consists essentially of water and:
- (a) water-soluble or water-dispersible lithium silicate at a concentration of 2 to 250 g/l, which lithium silicate is a mixture of silicic acid or silicate and lithium salt in a molar ratio of 20:1 to 1:1,
- (b) at least one water-soluble or water-dispersible saturated or unsaturated fatty acid compound, higher alcohol wax, polyethylene type resin, or silicone type resin at a concentration of 1 to 250 g/l,
- (c) at least one water-soluble phosphate or phosphoric acid at a concentration of 1 to 100 g/l.
Dependencies are inferred from the claim text.