CN1138639A - Electroplating current density automatic regulating meter - Google Patents
Electroplating current density automatic regulating meter Download PDFInfo
- Publication number
- CN1138639A CN1138639A CN 95111086 CN95111086A CN1138639A CN 1138639 A CN1138639 A CN 1138639A CN 95111086 CN95111086 CN 95111086 CN 95111086 A CN95111086 A CN 95111086A CN 1138639 A CN1138639 A CN 1138639A
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- China
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- current density
- umformer
- electrode
- sensor probe
- automatic regulating
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Abstract
An automatic current density regulating instrument for electroplate, anodizing, electormoulding and electrolysis features that sensor probe is installed before standard electrode fixed to pi-shaped electrode hung from cathode rod of electrolyzer, and current sensor is composed of sensor probe and converter connected to controller. Its advantages include simple structure,s table performance, very small temp drift and automatic control.
Description
A kind of electroplating current density is adjusted the automatic control equipment that instrument belongs to automatic adjustment current density.Be applicable to technical field of electrochemistry such as plating, cathode oxidation, electroforming, electrolysis.
Before the present invention makes, the current density operating device comparatively approaching in prior art with present technique, persevering current control, constant voltage control, they are control current density automatically all.In the method for adjusting current density, having a kind of is by so-called characteristic autocontrol mode between coating bath voltage and the coating bath current density, but this mode is subjected to the influence of factors such as workpiece shape, bath element, bath temperature, annode area, interelectrode distance, electrolyte flow, is incomplete therefore.Also have another kind to come the method for control current density also pretty troublesome, and can't realize automatic control by calculating the long-pending and each workpiece number of feeding of workpiece surface.
The objective of the invention is to overcome above-mentioned weak point, thereby provide a kind of other factors that is not subjected to influence, rely on the directly size of detection negative electrode average current density, realize controlling automatically the electroplating current density automatic regulating meter of the average current density of plating piece.
The present invention mainly is made up of negative electrode standard electrode (1), Wu Xingdianji (3), sensor probe (6), umformer (10), controller (13).The preceding device sensor probe of negative electrode standard electrode (1) (6), negative electrode standard electrode (1) are fixed on the Wu Xingdianji (3), Wu Xingdianji (3) hangs on the coating bath cathode bar, sensor probe (6) is formed current sensor with umformer (10), and umformer (10) connects controller (13) by cable (11).
Fig. 1 is a structural front view of the present invention:
Fig. 2 is a converter circuit schematic diagram of the present invention:
Fig. 3 is a controller circuitry schematic diagram of the present invention:
Embodiment during following the present invention incites somebody to action in conjunction with the accompanying drawings is further described:
The present invention adopts screw (2) to be fixed on the Wu Xingdianji (3) in negative electrode standard electrode (1) preceding placement ring current sensor probe (6), negative electrode standard electrode (1), Wu Xingdianji (3) hangs on the coating bath cathode bar, and make its fixation with two thru-bolts (4), one end and the Wu Xingdianji (3) of auxiliary soft wiring (5) are electrically connected, and the other end is connected with cathode power.Sensor probe (6) and negative electrode standard electrode (1) are immersed in the plating tank plating bath, sensor probe (6), plastics tubing (12) are formed current sensor with umformer, it can become electrical signal with the current conversion that flows through probe window, deliver to controller (13) by cable (11), controller (13) can be controlled rectifying installation, adjust the size of its outward current, thereby reach the current density purpose of control automatically.
Ring current sensor probe (6) is made up of magnetic-sensitive elements in corrosion resistant plastics casing of totally enclosed annular (7) and the box.Magnetic-sensitive elements is made up of amorphous alloy magnet ring (8) and coil (9), go up two-wire parallel wound coil (9) at amorphous alloy magnet ring (8), two groups of coils of coil (9) join end to end and draw on the positive source of receiving umformer (10) with lead in the plastics tubing (12), and two other the end of a thread is also used the middle lead of plastics tubing (19) to draw and received umformer (10) switch triode V1, V2 collector electrode respectively.In the coil (9) in two groups of coil L1, L2 and the umformer (10) V1, V2, Cb1, Cb2, Rb1, Rb2, RL1, RL2 form the multi-harmonic-oscillations bridge circuit.V1, V2 are switch triode, are connected feedback resistance Rb1, Rb2 respectively, feedback capacity Cb1, Cb2 between its collector electrode and the base stage; Connecting resistance RL1, RL2 are to ground respectively for triode V1, V2 emtting electrode, and RP1 is a zero potentiometer, and the emtting electrode PP1 slip outlet line that the RP1 two ends are connected to two triode V1, V2 respectively is connected to ground.RP1 can adjust the working order of multivibrator, makes its complete equipilibrium.Behind the power connection, circuit is started working, in the preceding semi-period of vibration, and the V1 conducting, V2 ends, and excitation current IC1 is from zero its maximum value 1ml that is increased to, and IC2 is reduced to zero by its maximum value 1m2 simultaneously.The second half of vibration is interim, and V1 ends, the V2 conducting, and electric current changes opposite.When the inductance L 1 of magnetic core coil, when L2 is identical, because circuit symmetry, output dc voltage is zero, when having electric current to pass through in the window of annular magnet coil, L1 and L2 imbalance are caused in the magnetic field of inducting that electric current produces, the volts DS of output no longer is zero, increase along with electric current, imbalance also increases, the volts DS of output correspondingly increases, therefore the electrical signal by transmodulator (10) output has reflected that loop sensor flows through the size of electric current in popping one's head in, that is has reflected the size of negative electrode average current density in the coating bath.V1, V2 emtting electrode output signal are received wave filter Z, the voltage signal of Z output is delivered to amplifier A1, and the signal that has amplified converts current signal to again through voltage current adapter B1, and current signal is delivered to controller (13) by cable (11).
The current signal of sending into controller (13) converts the voltage signal relevant with current density to through current-to-voltage convertor B2.Potentiometer RP2, RP3 can set the upper limit set-point and the lower limit set-point of current density control respectively, and the slip outlet line of RP2, RP3 is received comparison amplifier A2, A3 respectively.The upper and lower bound value of the voltage signal of transmodulator B2 output being sent into comparison amplifier A2, A3 and setting respectively compares respectively, A2, A3 drive upper limit pilot lamp H1 respectively, upper limit relay KC1 and lower limit pilot lamp H2, lower limit relay KC2, by the servomotor of the contact of rly. control silicon rectifier device, the outward current of control rectifying device reduces or increases.The voltage signal that umformer B2 sends is delivered to 31/2 bit digital voltmeter P simultaneously, is shown the numerical value A/dm of current density
2Voltage signal is delivered to comparison amplifier A4 and amplifier A5 simultaneously, voltage signal and RP3 set(ting)value compare, potentiometer RP4 can adjust control sensitivity, A5 output terminal OUT2 output control signal can be adjusted the size of silicon controlled rectifier or high frequency switch power device outward current, thus the average current density of control coating bath.
Compared with the prior art the present invention has the following advantages:
1, rational in infrastructure, adopt direct-detection to the current density signal control the rectification dress Put; 2, stable performance, temperature drift is minimum; 3, by the control of present technique electroplating process System can be simplified significantly, has saved the long-pending calculating of surface of the work, and workpiece quantity is calculated and electric current Adjust the loaded down with trivial details routine works such as setting; 4, electroplate and can realize that current density controls automatically, Quality is guaranteed.
Claims (3)
1. an electroplating current density automatic regulating meter mainly is made up of negative electrode standard electrode (1), sensor probe (6), umformer (10), controller (13), it is characterized in that the pre-installed sensor probe of negative electrode standard electrode (1) (6), negative electrode standard electrode (1) is fixed on the Wu Xingdianji (3), Wu Xingdianji (3) hangs on the coating bath cathode bar, sensor probe (6) is formed current sensor with umformer (10), and umformer (10) connects controller (13) by cable (11).
2, electroplating current density automatic regulating meter according to claim 1 is characterized in that described sensor probe (6) comprises box (7) and magnetic-sensitive elements; Magnetic-sensitive elements is made up of amorphous alloy magnet ring (8), coil (9) and is installed in the box (7), and amorphous alloy magnet ring (8) is gone up two-wire parallel wound coil (9).
3, electroplating current density automatic regulating meter according to claim 1, it is characterized in that described umformer (10) electronic line component annexation is as follows: by L1, L2, V1, V2, Cb1, Cb2, RL1, the multi-harmonic-oscillations bridge circuit that RL2 forms, V1, V2 is a switch triode, be connected feedback resistance Rb1 respectively between its collector electrode and the base stage, Rb2, feedback capacity Cb1, Cb2, triode V1, the V2 emtting electrode meets output resistance RL1 respectively, RL2 is to ground, RP1 is a zero potentiometer, the RP1 two ends are connected to two triode V1 respectively, the emtting electrode of V2, RP1 slip outlet line is connected to ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95111086 CN1138639A (en) | 1995-06-22 | 1995-06-22 | Electroplating current density automatic regulating meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95111086 CN1138639A (en) | 1995-06-22 | 1995-06-22 | Electroplating current density automatic regulating meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1138639A true CN1138639A (en) | 1996-12-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95111086 Pending CN1138639A (en) | 1995-06-22 | 1995-06-22 | Electroplating current density automatic regulating meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1138639A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101580956B (en) * | 2008-05-16 | 2013-05-15 | 北大方正集团有限公司 | Method and device for gold finger galvanizing cylinder to automatically input current |
| CN103789818A (en) * | 2012-10-31 | 2014-05-14 | 三星电机株式会社 | System and method for controlling electroplating |
| CN106498483A (en) * | 2016-11-29 | 2017-03-15 | 延康汽车零部件如皋有限公司 | A kind of electroplating technological parameter inter-linked controlling method |
| CN110846702A (en) * | 2019-12-20 | 2020-02-28 | 湖南化工职业技术学院 | Stainless steel electrochemical coloring potential control device |
-
1995
- 1995-06-22 CN CN 95111086 patent/CN1138639A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101580956B (en) * | 2008-05-16 | 2013-05-15 | 北大方正集团有限公司 | Method and device for gold finger galvanizing cylinder to automatically input current |
| CN103789818A (en) * | 2012-10-31 | 2014-05-14 | 三星电机株式会社 | System and method for controlling electroplating |
| CN106498483A (en) * | 2016-11-29 | 2017-03-15 | 延康汽车零部件如皋有限公司 | A kind of electroplating technological parameter inter-linked controlling method |
| CN106498483B (en) * | 2016-11-29 | 2018-10-23 | 延康汽车零部件如皋有限公司 | A kind of electroplating technological parameter inter-linked controlling method |
| CN110846702A (en) * | 2019-12-20 | 2020-02-28 | 湖南化工职业技术学院 | Stainless steel electrochemical coloring potential control device |
| CN110846702B (en) * | 2019-12-20 | 2024-04-05 | 湖南化工职业技术学院 | Stainless steel electrochemical coloring potential control device |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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