LUBRICATING RESIN COATED STEEL STRIPS HAVING IMPROVED FORMABILITY AND CORROSION RESISTANCE

A zinc, zinc alloy or aluminum alloy plated steel strip having chromate coatings on both surfaces is coated with a lubricating resin composition for improving formability and corrosion resistance. In one form, a resin composition including a base resin, silica, a high-melting polyolefin wax and opti...

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Bibliographische Detailangaben
Hauptverfasser: TSUGAWA, SHUNICHI, SAWATARI, HIDEAKI, MOHRI, TAIZO, TOTSUKA, NOBUO, INOUE, TANEHIRO, KURISU, TAKAO
Format: Patent
Sprache:eng
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Zusammenfassung:A zinc, zinc alloy or aluminum alloy plated steel strip having chromate coatings on both surfaces is coated with a lubricating resin composition for improving formability and corrosion resistance. In one form, a resin composition including a base resin, silica, a high-melting polyolefin wax and optionally, a low-melting polyolefin wax is applied on both surfaces for improving formability. In a second form, a resin composition including a base resin, silica, and a powder fluoro resin is applied on both surfaces for improving corrosion resistance. In a third form, the chromated steel is coated with a resin composition including a base resin, silica and a solid lubricant on one side and with a resin composition including a base resin and silica on the other side for improving both formability and corrosion resistance.