发明名称 |
PROCESS FOR CONTROLLING ZINC PHOSPHATING TREATING SOLUTIONS |
摘要 |
A process for controlling the zinc or zinc and nickel content of a zinc phosphate conversion coating solution employs the addition of EDTA and titration with calcium ion using a calcium ion electrode. Preferably to a second sample is added EDTA and a thioglycolate and the same titration conducted to obtain the concentration of nickel ion for direct control purposes. |
申请公布号 |
ZA8501539(B) |
申请公布日期 |
1986.05.28 |
申请号 |
ZA19850001539 |
申请日期 |
1985.02.28 |
申请人 |
NIHON PARKERIZING CO.,LTD. |
发明人 |
RYUJI KOJIMA;NOAMI SUZUKI;YOKICHI SATO;TSUNEO SAITO |
分类号 |
C23C22/07;C23C22/77 |
主分类号 |
C23C22/07 |
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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