发明名称 |
METHOD OF PHOSPHATIZING METALLIC SURFACE |
摘要 |
FIELD: machine building and metallurgy, more particularly preparation of phosphate coatings. SUBSTANCE: phosphate coatings is applied in solution which comprises (wt %): 1.15-3.06 zinc ions; 0.86-2.49 phosphate ((P<SB>2</SB>O<SB>5</SB>)) ions; 1.7-4.25 nitrate ions; 0.0096-0.029 nickel ions; 0.048-0.2 carbonic acid diamide; 0.0017-0.092 propionic acid production waste; and the water balance. Solution is heated to 70-75 C and phosphatized for 10-15 min. Zinc ions are added to solution as zinc scale which has the following components (%): at least 65 zinc; not higher than 0.6 lead; not higher than 1.5 aluminium; not higher than 1.5 iron; and not higher than 3.5 chlorine. EFFECT: improved protecting properties of phosphate coating, greater coating weight and increased corrosion resistance.
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申请公布号 |
RU2113541(C1) |
申请公布日期 |
1998.06.20 |
申请号 |
RU19960110710 |
申请日期 |
1996.05.28 |
申请人 |
AKTSIONERNOE OBSHCHESTVO ZAKRYTOGO TIPA "FK" |
发明人 |
NABATOVA E.A.;CHUMAEVSKIJ V.A. |
分类号 |
C23C22/73;C23C22/17;(IPC1-7):C23C22/73 |
主分类号 |
C23C22/73 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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