发明名称 |
CR-FREE COATED STEEL SHEET WITHOUT RESIN COATING, PREPARING METHODS THEREOF AND COATING COMPOSITION THEREFOR |
摘要 |
A chromium-free surface-treated steel plate of resin abbreviation type, a manufacturing method for the same, and chromium-free processing liquid for the same are provided to reduce manufacturing processes and to save manufacturing cost since a resin processing is omitted after a chromium-free processing. A manufacturing method for a chromium-free surface-treated steel plate of resin abbreviation type comprises: a step of coating the chromium-free processing liquid on an electricity zinc-based metal plated steel sheet; and a forming a chromium-free layer by heating the chromium-free processing liquid coated steel sheet at 160~250°C. The electricity zinc-based metal plated steel sheet is an electricity zinc-based metal plated steel sheet in which zinc or Zn-Ni is coated on a cold rolled steel with the plating adhesive amount of 20~30g/m^2. The chromium-free processing liquid includes: a binder resin: 10~50 weight% of one or more types selected from groups consisting of silicate: 3~40 weight%, silane: 0.5~10 weight%, titanium: 0.2~8 weight%, urethane resin and epoxy resin; titanium carbonate: 2~5 weight%; and titanium phosphate: 1~5 weight%.
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申请公布号 |
KR20090070024(A) |
申请公布日期 |
2009.07.01 |
申请号 |
KR20070137882 |
申请日期 |
2007.12.26 |
申请人 |
POSCO |
发明人 |
NOH, SANG KEOL;LEE, JAE RYUNG;CHO, YONG KYUN;JUNG, DAE IN |
分类号 |
C23C22/00;C23C20/00 |
主分类号 |
C23C22/00 |
代理机构 |
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