WO2015188597A1

WO2015188597A1 - Continuous electroplating test device simulating different linear speeds of band steel

Info

Publication number: WO2015188597A1
Application number: PCT/CN2014/092599
Authority: WO
Inventors: 张荣品; 陆永亮; 王海军
Original assignee: 上海梅山钢铁股份有限公司
Priority date: 2014-06-11
Filing date: 2014-11-29
Publication date: 2015-12-17
Also published as: CN105316739A; EP3156523B1; CN105316739B; EP3156523A1; EP3156523A4

Abstract

The present invention relates to a continuous electroplating test device simulating different linear speeds of band steel, characterized in that the test device comprises a support provided with a work bench, a work groove being fixed on the work bench. The test device further comprises a working electrode system, a transmission shaft, an auxiliary electrode, and a sample working electrode, the transmission shaft being connected to the working electrode system, and the auxiliary electrode and the working electrode system both being connected to a rectifier to form a closed loop. The sample working electrode is installed on the working electrode system to adjust motor rotation to simulate a high-speed band steel production process. The test device can simulate a whole continuous band steel production process, including technical processes such as alkaline cleaning, acid cleaning, electroplating and passivation, and is capable of simulating either the whole process or a specific technical process. Respective simulation tests do not interfere with each other, further ensuring test accuracy.

Description

Continuous electroplating test device for simulating different linear speeds of strip steel

Technical field

The invention relates to an electroplating test device, in particular to a continuous electroplating test device for simulating different linear speeds of strip steel, and belongs to the technical field of electroplating.

Background technique

The electroplating process is a complex electrochemical process. The quality of the electroplating product is related to the formulation of the plating solution, as well as the surface condition of the plating plate, the flow condition of the plating solution, and the relative speed of the plating solution and the plated part. There are two main methods of laboratory simulation electroplating: static simulation and dynamic simulation. In order to truly reflect the operating state of electroplating, dynamic electroplating is often used for testing. Ordinary dynamic tests can only use a fixed speed for simulation tests, and the efficiency is relatively low. The rotating disk electrode can perform continuous plating test at different line speeds, and the potential change curve is monitored by an electrochemical workstation. However, the test piece obtained by the method is small, and the scanning electron microscope morphology analysis cannot be performed for different parts to examine the plating layer. Information such as morphology and grain. Therefore, there is a need for a continuous plating test apparatus capable of simulating different speeds of strip steel.

Summary of the invention

The invention is directed to the technical problems existing in the prior art, and provides a structurally ingenious design, which can realize high-speed continuous electroplating of strip steel, and can obtain a plurality of linear velocity test results through one test, and is used for plating plating limit plating performance. Test device for parameter evaluation.

In order to achieve the above object, the technical solution adopted by the present invention is as follows, a simulated strip steel A continuous plating test device with different line speeds, characterized in that the test device comprises a bracket, a support table is arranged on the bracket, a work slot is fixed on the worktable, and the test device further comprises a working electrode system, and the drive a shaft, an auxiliary electrode, a sample working electrode, the transmission shaft is connected to the working electrode system, and the auxiliary electrode and the working electrode system are connected to the rectifier to form a closed loop, and the sample working electrode is mounted on the working electrode system On the top, the function of the anode and cathode is changed by changing the positive and negative poles of the rectifier, thereby realizing the simulation of the electroplating and cleaning process, and simulating the high-speed production process of the strip by adjusting the rotation of the motor.

As an improvement of the present invention, the motor comprises a rotating electric machine and a vertical lifting motor, and the vertical lifting motor realizes vertical movement, and the rotating electric machine drives the working motor through the transmission shaft to realize high-speed rotation of the working electrode system.

As an improvement of the present invention, the working electrode system comprises an upper nut, a lower nut, an upper washer, a lower washer, a polytetrafluoroethylene and a circular sealing ring, and the upper and lower sides of the polytetrafluoroethylene are respectively provided with upper The washer and the lower washer are respectively fixed by the upper nut and the lower nut, and a circular seal ring is provided around the washer and the lower nut. The upper nut and the lower nut are used to fix the PTFE and the working electrode. The central axis of the Teflon is threaded, and can be rotated and fastened to the drive shaft. The center of the working electrode of the sample is perforated and attached to the Teflon. Lower the surface and secure the working electrode with a lower nut. At the same time, the circular sealing ring is sleeved on the upper surface of the PTFE and the edge of the lower surface of the working electrode of the sample to prevent the plating solution from flowing between the PTFE and the working electrode of the sample, causing the working electrode to sway and affect Plating effect.

As a refinement of the invention, the auxiliary electrode diameter is larger than the diameter of the working electrode system. Avoid uneven distribution of power lines during electroplating.

As a refinement of the invention, the working platform is arranged as a rotating platform. The platform It can be rotated freely by 360°, and the test is carried out.

As a modification of the present invention, the testing device further includes a moving screw that moves up and down by driving the moving screw.

As a modification of the present invention, the number of the working grooves is at least one. Generally set to seven, respectively, pickling, alkaline washing, fluxing, reflow, passivation, electroplating, cleaning and other related work.

As a modification of the present invention, the working electrode system includes an internally threaded bottom cover, a hexagon socket head bolt, a toroidal sealing ring, a stainless steel chassis, a spring, and an externally threaded housing, the drive shaft being welded to the stainless steel chassis The spring is fixed to the transmission shaft by a hexagon socket bolt. The internal thread bottom cover is embedded with a circular sealing ring, and the internal thread bottom cover is connected with the externally threaded shell through a circular sealing ring to prevent the solution from entering. Inside the working electrode system, the plating effect is affected; in the technical solution, when the working electrode system is connected with the transmission shaft, the spring connection can increase the contact area and maintain a good electrical conduction effect.

As a refinement of the invention, the working electrode system is fixed to the drive shaft by fastening threads.

Compared with the prior art, the advantages of the technology are as follows: 1) The test device can simulate the whole process of strip steel continuous production, including alkali washing, pickling, electroplating and passivation, etc., and can simulate the whole process, The simulation of a certain process can be carried out separately, and the simulation tests do not interfere with each other, further ensuring the accuracy of the experiment; 2) In the technical solution, the vertical motion and the rotation are realized by the combination of the rotating electric machine and the vertical lifting motor. The independent process of motion, by adjusting the rotational speed of the rotating electrical machine, the strip is rotated to obtain a certain angular velocity, and the angular velocity is converted into different linear velocity; 3) The technical method described in the present invention In the case, at a certain angular velocity, the circular steel plate gradually increases in speed from the center to the surrounding line, and through the conversion relationship between the angular velocity and the linear velocity, the steel plate samples of different linear velocities can be obtained by only one test, and Better evaluation of the plating state of the plating solution at different line speeds to obtain the best working window of the plating solution; 4) The test device has the characteristics of simple operation, high efficiency, safe operation and high accuracy of the experiment; The technical solution provides a plurality of working electrode structures to prevent the solution from entering the inside of the working electrode, thereby further ensuring the plating effect.

DRAWINGS

Figure 1 is a schematic view showing the overall structure of the test device of the present invention;

Figure 2 is a schematic diagram of the closed loop of the present invention;

Figure 3 is an enlarged view of the working electrode system of the present invention;

4 is a schematic structural view of another working electrode of the present invention;

Figure 5 is a plan view of Figure 4;

In the figure: 1, rotating motor, 2, vertical lifting motor, 3, working slot, 4, bracket, 5, working electrode system, 6, moving screw, 7, rotating platform, 8, circulation pump, 9, auxiliary electrode, 10, storage tank, 11, drive shaft, 12, upper nut, 13, lower nut, 14, upper washer, 15, lower washer, 16, PTFE, 17, round seal, 18, sample work Electrode, 19, rectifier, 20, internal threaded bottom cover, 21, hexagon socket head bolt, 22, toroidal sealing ring, 23, stainless steel chassis, 24, spring, 25, fastening thread, 26, externally threaded housing.

detailed description

The invention will be further described and described in conjunction with the drawings and specific embodiments in the claims.

Embodiment 1: Referring to FIG. 1 , a continuous plating test device simulating different linear speeds of strip steel, the test device includes a bracket 4 on which a work table is disposed, and a work slot 3 is fixed on the work table. The test device further includes a working electrode system 5, a drive shaft 11, an auxiliary electrode 9, and a sample working electrode 18. The drive shaft 11 is connected to the working electrode system 5, and the auxiliary electrode 9 and the working electrode system 5 are both Connected to the rectifier to form a closed loop, the sample working electrode 18 is mounted on the working electrode system 5, and the function of the anode and the cathode is changed by changing the positive and negative poles of the rectifier, thereby realizing the simulation of the plating and cleaning process, and adjusting Motor rotation simulates the high-speed production process of strip steel. The test device can simulate the whole process of strip steel continuous production, including alkali washing, pickling, electroplating and passivation, etc., which can simulate the whole process or simulate a certain process separately. Do not interfere with each other to further ensure the accuracy of the experiment.

Embodiment 2: Referring to FIG. 1, as a modification of the present invention, the motor includes a rotary electric machine 1 and a vertical lift motor 2, and the vertical lift motor 2 realizes vertical motion, and the rotary electric machine 1 drives the work motor through the drive shaft 11 to realize the working electrode. High speed rotation of the system. The remaining structure and advantages are complete with Embodiment 1.

Embodiment 3: Referring to Figure 2, as a modification of the present invention, the auxiliary electrode 9 has a diameter larger than the diameter of the working electrode system 5. Avoid uneven distribution of power lines during electroplating. The remaining structure and advantages are complete with Embodiment 1.

Embodiment 4: Referring to Figure 1, as a modification of the present invention, the working platform is provided as a rotating platform 7. The platform can be rotated 360° freely for easy testing. Remaining knot The structure and advantages are the same as in Embodiment 1.

Embodiment 5: Referring to Figure 1, as a modification of the present invention, the test apparatus further includes a moving screw 6, which moves up and down by driving the moving screw 6. The remaining structure and advantages are complete with Embodiment 1.

Embodiment 6: Referring to Figure 1, as a modification of the present invention, the number of the working tanks 3 is at least one. Generally set to seven, respectively, pickling, alkaline washing, fluxing, reflow, passivation, electroplating, cleaning and other related work. The remaining structure and advantages are complete with Embodiment 1.

Embodiment 7: Referring to Figures 2 and 3, as a modification of the present invention, the working electrode system 5 includes an upper nut 12, a lower nut 13, an upper washer 14, a lower washer 15, a Teflon 16, and a circular shape. The seal ring 17 and the upper and lower sides of the Teflon 16 are respectively provided with an upper washer 14 and a lower washer 15 which are respectively fixed by the upper nut 12 and the lower nut 13, and a circular seal ring 17 is provided around the seal ring 17 and the lower nut 13 respectively. The upper nut 12 and the lower nut 13 are used for fixing the polytetrafluoroethylene 16 and the sample working electrode 18. The central axis of the Teflon is threaded, and can be rotated and fastened to the drive shaft 11, and the sample working electrode 18 is punched at the center. Thereafter, it is attached to the lower surface of the polytetrafluoroethylene 16 and the sample working electrode 18 is fixed by a lower nut. At the same time, the circular sealing ring 17 is sleeved on the upper surface of the PTFE and the edge of the lower surface of the working electrode of the sample to prevent the plating solution from flowing between the PTFE and the working electrode, causing the working electrode of the sample to sway. Affect the plating effect. The remaining structure and advantages are complete with Embodiment 1.

Embodiment 8: Referring to FIG. 4 and FIG. 5, as a modification of the present invention, the working electrode system 5 includes an internally threaded bottom cover 20, a hexagon socket bolt 21, a circular sealing ring 22, a stainless steel chassis 23, and a spring 24 And the externally threaded housing 26, the drive shaft 11 is welded to the stainless steel chassis 23, and the spring 24 is fixed to the transmission by a hexagon socket bolt 21 On the shaft 11, the internally threaded bottom cover 20 is embedded with a circular sealing ring 22, and the internal threaded bottom cover 20 is connected to the externally threaded housing 26 through the annular sealing ring 22 to prevent the solution from entering the working electrode system. The plating effect is affected; when the working electrode system 5 is connected to the transmission shaft 11 in the technical solution, the connection of the spring 24 can increase the contact area and maintain a good electrical conduction effect. The remaining structure and advantages are complete with Embodiment 1.

The test process is briefly described as follows: First, the wafer having a diameter of 10 cm is cut for use, and the working electrode system is fixed to the drive shaft 11 by the fastening screw 25; then, the circular working electrode is attached to the bottom of the stainless steel chassis 15, and the ring is embedded. The inner threaded bottom cover 20 of the sealing ring 22 is screwed onto the externally threaded housing 26, and the test can be started by turning on the power; finally, after the end of the test, the inner threaded bottom cover is unscrewed to remove the circular working electrode. .

The present invention can also combine at least one of the technical features described in

Embodiments

2, 3, 4, 5, 6, and 7 with Embodiment 1 to form a new embodiment.

Embodiments

2, 3, 4, 5, 6, and 8 with Embodiment 1 to form a new embodiment.

It is to be noted that the above-described embodiments are not intended to limit the scope of the present invention, and equivalent changes or substitutions made on the basis of the above technical solutions fall within the scope of the claims of the present invention.

Claims

The invention relates to a continuous electroplating test device for simulating different linear speeds of strip steel, characterized in that the test device comprises a bracket, a support table is arranged on the bracket, a work slot is fixed on the worktable, and the test device further comprises a working electrode system, a drive shaft, an auxiliary electrode, and a sample working electrode, wherein the drive shaft is connected to the working electrode system, and the auxiliary electrode and the working electrode system are connected to the rectifier to form a closed loop, and the sample working electrode Installed on the working electrode system, the high-speed production process of the strip is simulated by adjusting the motor rotation.
A continuous electroplating test apparatus for simulating strip speeds of different linear speeds according to claim 1, wherein said motor comprises a rotating electrical machine and a vertical lifting motor, and the vertical lifting motor is coupled to the rotating platform for vertical movement; The motor is connected to the moving screw of the vertical lift motor, and the high speed rotation of the working electrode system is realized by the drive shaft.
A continuous electroplating test apparatus for simulating strip speeds of different linear velocities according to claim 2, wherein the auxiliary electrode diameter is larger than the diameter of the working electrode system.
A continuous electroplating test apparatus for simulating strip speeds of different linear speeds according to claim 3, wherein the working platform is provided as a rotating platform.
A continuous electroplating test apparatus for simulating different linear speeds of strip steel according to claim 3 or 4, wherein the test apparatus further comprises a moving screw, the moving screw is engaged by a thread, the rotating motor and the moving screw Connected, the vertical lift motor drives the rotary motor and the working electrode system to move up and down by moving the screw.
A continuous plating test apparatus for simulating strip speeds of different linear speeds according to claim 5, wherein the number of said working grooves is at least one.
A continuous electroplating test for simulating different linear speeds of strip steel according to claim 6. The device is characterized in that the working electrode system comprises an upper nut, a lower nut, an upper washer, a lower washer, a polytetrafluoroethylene and a circular sealing ring, and upper and lower sides of the polytetrafluoroethylene are respectively provided with an upper washer and The lower washers are fixed by upper and lower nuts, respectively, and a circular seal is provided around them.
A continuous electroplating test apparatus for simulating strip speeds of different linear speeds according to claim 6, wherein said working electrode system comprises an internally threaded bottom cover, a hexagon socket bolt, a toroidal seal ring, a stainless steel chassis, a spring And an externally threaded housing, the drive shaft is welded to the stainless steel chassis, the spring is fixed to the transmission shaft by a hexagon socket bolt, the internal thread bottom cover is embedded with a circular sealing ring, and the internal thread bottom cover is passed The toroidal sealing ring is connected to the externally threaded housing.
A continuous plating test apparatus for simulating different linear speeds of strip steel according to claim 7 or 8, wherein said working electrode system is fixed to the drive shaft by fastening threads.