Title:
MEASURING METHOD FOR PLATE STICKING QUANTITY
Document Type and Number:
Japanese Patent JP3482760
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To rapidly and easily calculate plate sticking quantity from a current value flowed so far, by differentiating a measured electric potential value two times, and taking the middle paint of two points, at zero, before and after minimum differentiation value as the time consumed from the beginning till pealing of a sticking substance.
SOLUTION: A test piece picked from a plating board is constant-current- electrolyzed in an electrolytic solution, as an anode, and change with lapse of time in electric potential is measured. The time corresponding to specified electric potential is decided as the time period from starting of electrolysis which was required for peeling of a test piece sticking matter. And Faraday's law is applied to the current value which had flown by that time, and the plate sticking quantity of the test piece is calculated. At this time, the measured potential value is differentiated two times in respect of time, and the middle point of two paints, at zero, before and after minimum differentiation value is taken as the time corresponding to the specified electric potential. In this manner, the sticking quantity which is equivalent to that obtained by the method with a tangent line is rapidly and easily obtained with automatic calculation of a computer.
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Inventors:
Takashi Tsukada
Shigeyuki Matsushima
Shigeyuki Matsushima
Application Number:
JP7773596A
Publication Date:
January 06, 2004
Filing Date:
March 29, 1996
Export Citation:
Assignee:
JFE Steel Corporation
International Classes:
G01N27/42; (IPC1-7): G01N27/42
Domestic Patent References:
| JP5332991A | ||||
| JP516614A | ||||
| JP4946791A | ||||
| JP894553A | ||||
| JP5021148B1 |
Attorney, Agent or Firm:
Yoshio Kosugi (1 person outside)