SU1224356A1 - Method of measuring area of components in electroplating process - Google Patents

Description

The invention relates to: electroplating and can be used to measure the area of parts having an electrically conductive surface, and to automatically control the current density in electroplating ions.

The purpose of the invention is to improve the accuracy of determining the area of parts with a complex configuration and complete automation of the process.

When implementing the proposed method, an additional electrode, whose area is equal to the main electrode, is mounted at a given distance from the main electrode, an additional electrode is connected to the same source current pole as the main electrode, and the current of the additional electrode is measured with the main electrode disconnected, then the additional electrode is removed electrode from the galvanic bath, and the area of the parts is calculated by the formula io Jar-D;

five

Jag

i-yaze-eeg ,, ,,

where 1eg

.3 U5 2o main current; additional electrode current;

power supply voltage of the electroplating bath; electrical conductivity of the electrolyte;

the distance between the main and additional electrodes # 1.

The method of measuring the area of parts during the electroplating process involves the following sequence of operations.

A suspension with parts, measuring electrodes and a main electrode are installed in a galvanic bath. An additional electrode is installed in the galvanic bath at a certain distance of 1 ° from the main electrode, and the area of the additional electrode is equal to the area of the main electrode.

Connect the parts to one pole of the current source, and an additional electrode - to another.

The current of the additional electrode is measured with the main electrode disconnected. The data is stored in the memory of the computing device.

An additional electrode is removed from the bath to disconnect from the current source.

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five

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The specific electrical conductivity of the electrolyte is measured using measurement electrodes.

A main electrode is connected to a current source and the main electrode current and the supply voltage of the electroplating bath are measured.

The area of the parts is determined according to the indicated formula.

The drawing shows a block diagram of the installation that implements the proposed method.

The installation contains a galvanic bath 1, in which a suspension with parts 2, the main electrode 3 and the measuring electrodes 4 are installed. The installation also contains a power source 5 of the measuring electrodes 4, a resistance 6 in the power supply circuit of the measuring electrodes 4, a source 7 of the electroplating bath current , shunt 8 in the power supply circuit of the main electrode 3, block 9 of the automation of the electroplating bath current source, device 10 for input of analog information, controlling computing complex 11, device 12 for outputting the analog ing formation, voltmeter 13 in c pi plating bath current source. In the electroplating bath 1, an additional electrode 14 is installed at a certain distance from the main electrode 3, the area of the additional electrode 14 being equal to the area of the main electrode 3 and it is connected to the same pole of the current source of the galvanic bath as the main electrode 3. In the additional supply circuit electrode 14 is installed shunt 15.

The device works as follows.

When a suspension with parts 2 and an additional electrode 14 enters into the electroplating bath 1, information about the distance between the main and additional electrodes and the current value of the additional electrode 14 is entered into the memory of the control computer complex 11. Then the additional electrode is removed from the electroplating bath, turning off it from the current source. After connecting to the source of the main electrode, the collection of information on the current value of the main electrode 3 from the shunt 8 and on the voltage value of the electroplating bath supply from the volt31 continues

13 on the value of the electrical conductivity of the electrolyte from the measuring electrodes 4, which goes through the analog information input device 10 to the control computer complex 11. The latter, taking into account the values of the distance between the additional 14 and the main 3 electrodes and the current of the additional The electrode calculates the area of the parts loaded in the galvanic bath according to the laid programs. The control terminal 11 generates a signal proportional to the received value of the area of the parts, which controls the operation of the unit 9

224356

ticks current galvanic bath.

Compared to the known, this method of measuring the area of parts with an electroplating process provides more accurate measurement results by simplifying the process and by eliminating the measurement of one of the intermediate values, namely the distance between the suspension with components and the main electrode, which Production conditions with frequently changing parts nomenclature cannot be permanent. In addition, the use of 15 of this method allows to fully automate the process of electroplating on parts.

Compiled by S.Ponomarev Editor N.Shvydka Tekhred o.Sopko Proofreader S.Shekmar

Order 1894/26 Circulation 615 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Branch PSh1 Patent, Uzhgorod, st. Project, 4

Claims (1)

METHOD FOR MEASURING AREA OF DETAILS DURING THE ELECTRICAL PROCESS, including installation of parts, measuring electrodes and the main electrode in a galvanic bath, connecting the main electrode of the bath to one pole of the current source, and parts to the other pole, measured _; the specific electrical conductivity of the electrolyte using measuring electrodes, measuring the supply voltage of a galvanic bath, measuring the current of the main electrode, which is different from the fact that, with; In order to increase the accuracy of determining the area of parts with complex configuration and complete automation of the process, an additional electrode is installed in the bath, the area of which is equal to the area of the main electrode, an additional electrode is connected to the same pole of the current source as the main electrode, and the current of the additional electrode is measured when switched off the main electrode, then an additional electrode is removed from the plating bath, and the area S of the parts is calculated according to the formula: where is the main electrode; additional electrode current; supply voltage of a plating bath; electrical conductivity of the electrolyte; distance between the main and auxiliary electrodes.