CN107740173B - Edge quality control method of high-tin-content tin plate - Google Patents
Edge quality control method of high-tin-content tin plate Download PDFInfo
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- CN107740173B CN107740173B CN201710833204.7A CN201710833204A CN107740173B CN 107740173 B CN107740173 B CN 107740173B CN 201710833204 A CN201710833204 A CN 201710833204A CN 107740173 B CN107740173 B CN 107740173B
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- electroplating
- electroplating baths
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- 239000005028 tinplate Substances 0.000 title claims abstract description 31
- 238000003908 quality control method Methods 0.000 title description 6
- 238000009713 electroplating Methods 0.000 claims abstract description 84
- 238000007747 plating Methods 0.000 claims abstract description 84
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 80
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 34
- 239000010959 steel Substances 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 33
- 229910001432 tin ion Inorganic materials 0.000 claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 claims abstract description 13
- 230000008569 process Effects 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims description 8
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 6
- 229920000570 polyether Polymers 0.000 claims description 6
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 2
- 230000006835 compression Effects 0.000 abstract description 10
- 238000007906 compression Methods 0.000 abstract description 10
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- AFVFQIVMOAPDHO-UHFFFAOYSA-N Methanesulfonic acid Chemical compound CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229940098779 methanesulfonic acid Drugs 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
- C25D17/02—Tanks; Installations therefor
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D21/00—Processes for servicing or operating cells for electrolytic coating
- C25D21/12—Process control or regulation
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Automation & Control Theory (AREA)
- Electroplating Methods And Accessories (AREA)
- Electroplating And Plating Baths Therefor (AREA)
Abstract
The invention disclosesA method for controlling the edge quality of a high-tin-content tin plate comprises arranging P electroplating baths on a soluble anode tin plating production line, wherein each electroplating bath is provided with a corresponding compression roller and a corresponding conductive roller, and a pure tin bar provided with an anode in each electroplating bath is used as a tin plating source; wherein the concentration of tin ions in the electroplating solution of the P electroplating baths is controlled to be 19-25 g/L; the current density of M electroplating baths in the P electroplating baths is controlled to be 28-30A/dm2The current density of N electroplating baths in the P electroplating baths is controlled to be 20-28A/dm2(ii) a In the process of tinning, in M electroplating baths, after the strip steel sequentially passes through the M electroplating baths for tinning, the strip steel is rolled by mutually matching the press rolls and the conductive rolls corresponding to the M electroplating baths; and then, after the strip steel sequentially passes through the N electroplating baths for tin plating, the strip steel is rolled by mutually matching the press rolls and the conductive rolls corresponding to the N electroplating baths to form the high-tin-content tin plate.
Description
Technical Field
The application relates to the technical field of metal material processing, in particular to an edge quality control method of a high-tin-content tin plate.
Background
The tin plate is a cold-rolled low-carbon steel sheet plated with pure tin on both sides, and combines the strength and formability of steel with the corrosion resistance and tin weldability of tin in one material. Among them, the tin-plated sheet having a tin plating amount of 11.2g/m2 is a high tin-plated sheet. Soluble anode tin plating production line means that the required tin ion derives from the pure tin strip of positive pole in electroplating process, and along with electroplating process's going on, the tin strip dissolves consumption gradually, and the continuous supply of tin ion is guaranteed to the tin strip that needs constantly to change the positive pole.
In the process of producing high-tin-plating-amount strip steel on a soluble anode tin plating production line, because the edge protection covers at the edges of the strip steel cannot be used for weakening the edge effect in the electroplating process, the tin layer at the edges of the strip steel has a loose plating structure. After the loose plating layer at the edge of the strip steel is contacted with the roller, the loose plating layer is adhered to the surface of the roller and is accumulated more and more, finally, the press roller is damaged, and tin powder at the edge of the finished strip steel falls off. And the speed of the conductive roller is very fast, about two rolls of strip steel are produced, the roller surface of the conductive roller can be damaged, the continuous production of the strip steel cannot be ensured, and the edge part quality of the strip steel is poor.
Disclosure of Invention
The invention provides a method for controlling the edge quality of a high-tin-content tin plate, which aims to solve the technical problem that a very loose plating layer structure appears on a tin layer at the edge of strip steel.
In order to solve the technical problem, the invention provides a method for controlling the edge quality of a high-tin-content tin plate, which comprises the following steps:
on a soluble anode tin plating production line, P plating tanks are configured, each plating tank is configured with a corresponding press roller and a corresponding conductive roller, and a pure tin bar configured with an anode in each plating tank is used as a tin plating source; wherein the concentration of tin ions in the electroplating solution of the P electroplating baths is controlled to be 19-25 g/L; the current density of M electroplating baths in the P electroplating baths is controlled to be 28-30A/dm2The current density of N electroplating baths in the P electroplating baths is controlled to be 20-28A/dm2；
In the process of tin plating, in the M plating baths, after the strip steel sequentially passes through the M plating baths for tin plating, the strip steel is rolled by mutually matching the press rolls and the conductive rolls corresponding to the M plating baths;
and then, after the strip steel sequentially passes through the N electroplating baths for tin plating, the strip steel is rolled by mutually matching the press rolls and the conductive rolls corresponding to the N electroplating baths to form the high-tin-content tin plate.
Preferably, the concentration of tin ions in the electroplating solution of the P electroplating baths is controlled to be 19-25 g/L, and the method is obtained by the following method:
the concentration of the electroplating solution in the P electroplating baths is controlled to be 19-25 g/L by a method of reducing the current density of the insoluble anode.
Preferably, the press roll and the conductive roll configured in each electroplating bath are made of the following materials: polyether urethane.
Preferably, the P electroplating baths are specifically 9 electroplating baths.
Preferably, the current density of the first 5 plating baths in the 9 plating baths is controlled to be 28-30A/dm2And the current density of the last 4 plating baths is controlled to be 20-28A/dm2。
Preferably, the method further comprises:
and monitoring the high-tin-content tin plate, and feeding back the actual edge tin powder value of the high-tin-content tin plate in real time.
Preferably, the method further comprises:
comparing the actual edge tin powder value with a preset tin powder value;
and if the actual edge tin powder value is more than the preset tin powder value, feeding back to the control system, and controlling to reduce the current density of the P electroplating baths by the control system.
Through one or P technical schemes, the invention has the following beneficial effects or advantages:
the invention discloses an edge quality control method of a high-tin-content tin plate, which is to be arranged in electroplating solution of P electroplating baths on a soluble anode tin plating production lineThe concentration of the tin ions is controlled to be 19-25 g/L; the current density of M electroplating baths in the P electroplating baths is controlled to be 28-30A/dm2The current density of N electroplating baths in the P electroplating baths is controlled to be 20-28A/dm2(ii) a In the process of tin plating, in the M plating baths, after the strip steel sequentially passes through the M plating baths for tin plating, the strip steel is rolled by mutually matching the press rolls and the conductive rolls corresponding to the M plating baths; and then, after the strip steel sequentially passes through the N electroplating baths for tin plating, the strip steel is rolled by mutually matching the press rolls and the conductive rolls corresponding to the N electroplating baths to form the high-tin-content tin plate. Because this application has controlled the current density of tin ion concentration and each plating bath, so can reduce the tin powder on the tin plate and drop, improve the high tin volume tin plate limit portion quality of production.
Furthermore, the compression roller and the conductive roller arranged in each electroplating bath are made of the following materials: polyether urethane. And then can avoid the damage of conductive roller compression roller and guarantee but continuous mass production.
Drawings
FIG. 1 shows the structure of a plating bath according to an embodiment of the present invention;
fig. 2 is a process diagram of an embodiment of the edge quality control method of a tin-plated plate with high tin content.
Detailed Description
In order to make the present application more clearly understood by those skilled in the art to which the present application pertains, the following detailed description of the present application is made with reference to the accompanying drawings by way of specific embodiments.
The invention discloses a method for controlling the edge quality of a tin plate with high tin content, which is particularly suitable for tin plating with the tin content of 11.2g/m2The method is particularly suitable for the vertical tank soluble anode tin electroplating production line of all methanesulfonic acid electroplating solution systems in the production of tin plates with high tin content. The invention relates to an electrotinning process and a material selection of a conductive pressing roller. The primary means is to improve the tin ion concentration in the plating bath components; optimizing the current density of each pass in the electroplating bath; and changing the material of the conductive roller.
The following describes in detail the practice of the present invention.
First, referring to FIG. 1, the structure of an electroplating bath on a soluble anode tin plating line according to the present invention will be described.
P electroplating baths 4 are arranged on a soluble anode tin plating production line, each electroplating bath 4 is provided with a corresponding press roller 1 and a corresponding conductive roller 2, and a pure tin bar 3 of an anode is arranged in each electroplating bath 4 to serve as a tin plating source; wherein, the concentration of tin ions in the electroplating solution of the P electroplating baths 4 is controlled to be 19-25 g/L; if the concentration is too high, the quality of the whole tin plate surface of the tin plate is poor, and if the concentration is too low, tin cannot be plated, so that the concentration of tin ions in the electroplating solution is controlled to be 19-25 g/L. The current density of M electroplating baths 4 in the P electroplating baths 4 is controlled to be 28-30A/dm2The current density of N electroplating baths 4 in the P electroplating baths 4 is controlled to be 20-28A/dm2. Also for controlling the tin plating quality of the tin plate.
In a specific embodiment, the P electroplating baths 4 are specifically 9 electroplating baths 4. The current density of the first 5 plating baths 4 among the 9 plating baths 4 is controlled to be 28-30A/dm2And the current density of the last 4 plating baths 4 is controlled to be 20-28A/dm2。
The concentration of tin ions in the 9 electroplating baths 4 is controlled to be 19-25 g/L. Furthermore, before producing the tin plate with high tin content, the concentration of the electroplating solution can be increased to 19-25 g/L by using a method of reducing the current density of the insoluble anode.
For convenience of illustration and explanation, only three plating tanks 4 are shown in fig. 1, and the other plating tanks 4 are similar to the three plating tanks 4 and thus are not described again.
Of course, in practical applications, in order to facilitate the distinction of the 9 plating tanks 4, a reference number distinction may be made on each plating tank 4. For example, the current density of the plating vessel 4 is controlled to 28 to 30A/dm2 for the plating vessel 4 of No. 1 to No. 5, and 20 to 28A/dm for the plating vessel 4 of No. 6 to No. 92。
Of course, in order to further reduce the dropping of the tin powder, the material of the pressure roller 1 and the conductive roller 2 disposed in each plating tank 4 is polyether urethane. Because the polyether polyurethane is wear-resistant, even if the tin powder drops, the service lives of the compression roller 1 and the conductive roller 2 are not influenced, the service lives of the compression roller 1 and the conductive roller 2 can be ensured, and the effect of continuously producing the high-quality tin-plated plate with high tin content can be achieved.
The tin plating process is explained in detail below.
Step 11, in the tin plating process, after the strip steel sequentially passes through the M plating baths 4 to be plated with tin in the M plating baths 4, rolling the strip steel by mutually matching the compression rollers 1 and the conductive rollers 2 corresponding to the M plating baths 4;
and step 12, after the strip steel sequentially passes through the N electroplating baths 4 for tin plating, the strip steel is mutually matched and rolled by the compression rollers 1 and the conductive rollers 2 corresponding to the N electroplating baths 4 to form the high-tin-content tin plate.
Furthermore, the high-tin-content tin plate can be monitored, and the actual edge tin powder value of the high-tin-content tin plate can be fed back in real time. Then, comparing the actual edge tin powder value with a preset tin powder value; and if the actual edge tin powder value is more than the preset tin powder value, feeding back the actual edge tin powder value to a control system, and controlling to reduce the current density of the P electroplating baths 4 by the control system.
Specifically, the current density of 6-9 grooves of the electroplating groove 4 is adjusted according to the edge quality of a finished product of the high-tin-content tin plate, and if more tin powder is on the edge, the current density is reduced; if the edge part is bright and has no tin powder and the plating layer meets the standard, the current density is kept unchanged. The method can effectively improve the tin plate with high tin content (the thickness of the plating layer is more than or equal to 11.2 g/m)2) The edge quality of the conductive roller 2 avoids the damage of the compression roller 1, and can achieve the continuous production of high-quality tin-plated plates with high tin content.
Through one or more embodiments of the present invention, the present invention has the following advantageous effects or advantages:
the invention discloses an edge quality control method of a high-tin-content tin plate, which is characterized in that the concentration of tin ions in electroplating liquid of P electroplating baths on a soluble anode tin plating production line is controlled to be 19-25 g/L; the current density of M electroplating baths in the P electroplating baths is controlled to be 28-30A/dm2The P numbers of electricityThe current density of N plating baths in the plating bath is controlled to be 20-28A/dm2(ii) a In the process of tin plating, in the M plating baths, after the strip steel sequentially passes through the M plating baths for tin plating, the strip steel is rolled by mutually matching the press rolls and the conductive rolls corresponding to the M plating baths; and then, after the strip steel sequentially passes through the N electroplating baths for tin plating, the strip steel is rolled by mutually matching the press rolls and the conductive rolls corresponding to the N electroplating baths to form the high-tin-content tin plate. Because the concentration of tin ions and the current density of each electroplating bath are controlled, the edge quality of the produced high-tin-content tin-plated plate can be improved.
Furthermore, the compression roller and the conductive roller arranged in each electroplating bath are made of the following materials: polyether urethane. And then can avoid the damage of conductive roller compression roller and guarantee but continuous mass production.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (5)
1. A method for controlling the edge quality of a tin plate with high tin content is characterized by comprising the following steps:
on a soluble anode tin plating production line, P plating tanks are arranged, each plating tank is provided with a corresponding press roller and a corresponding conductive roller, and the press roller and the conductive roller arranged in each plating tank are made of the following materials: polyether urethane; the pure tin bar provided with the anode in each electroplating bath is used as a tin plating source; wherein the tin ion concentration in the electroplating solution of the P electroplating baths is controlled to be 19-25 g/L, and the tin ion concentration is obtained by the following method: by reducing the rate of failureControlling the concentration of the electroplating solution of the P electroplating baths to be 19-25 g/L; the current density of M electroplating baths in the P electroplating baths is controlled to be 28-30A/dm2The current density of N electroplating baths in the P electroplating baths is controlled to be 20-28A/dm2；
In the process of tin plating, in the M plating baths, after the strip steel sequentially passes through the M plating baths for tin plating, the strip steel is rolled by mutually matching the press rolls and the conductive rolls corresponding to the M plating baths;
and then, after the strip steel sequentially passes through the N electroplating baths for tin plating, the strip steel is processed by mutually matching the press rolls and the conductive rolls corresponding to the N electroplating baths to form the high-tin-content tin plate.
2. The method of claim 1, wherein the P plating cells are specifically 9 plating cells.
3. The method of claim 2, wherein the current density of the first 5 plating baths among the 9 plating baths is controlled to be 28 to 30A/dm2And the current density of the last 4 plating baths is controlled to be 20-28A/dm2。
4. The method of claim 1, wherein the method further comprises:
and monitoring the high-tin-content tin plate, and feeding back the actual edge tin powder value of the high-tin-content tin plate in real time.
5. The method of claim 4, wherein the method further comprises:
comparing the actual edge tin powder value with a preset tin powder value;
and if the actual edge tin powder value is more than the preset tin powder value, feeding back to the control system, and controlling to reduce the current density of the P electroplating baths by the control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710833204.7A CN107740173B (en) | 2017-09-15 | 2017-09-15 | Edge quality control method of high-tin-content tin plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710833204.7A CN107740173B (en) | 2017-09-15 | 2017-09-15 | Edge quality control method of high-tin-content tin plate |
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| Publication Number | Publication Date |
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| CN107740173A CN107740173A (en) | 2018-02-27 |
| CN107740173B true CN107740173B (en) | 2020-12-15 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109023496B (en) * | 2018-06-26 | 2020-08-21 | 南通汇丰电子科技有限公司 | Method and system for controlling electroplating of tin-bismuth alloy |
| CN110029381B (en) * | 2019-04-25 | 2020-12-15 | 首钢集团有限公司 | Production method of tin plate with high tin plating amount |
| CN114108062B (en) * | 2021-11-02 | 2023-05-09 | 首钢集团有限公司 | Method and device for controlling bright edge defect of tinned plate |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5521544A (en) * | 1978-08-02 | 1980-02-15 | Kawasaki Steel Corp | Method of manufacturing electroplated tin plate |
| KR20060071716A (en) * | 2004-12-22 | 2006-06-27 | 주식회사 포스코 | System for preventing excessive plating for edge of strip |
| CN1918328A (en) * | 2003-12-23 | 2007-02-21 | 克里斯塔尔公司 | Improved metal strip electroplating |
| CN1935391A (en) * | 2005-09-21 | 2007-03-28 | 拉塞斯坦有限公司 | Method for lowering the coefficient of friction of the surface of metal bands with a coating and device for applying a metallic coating onto a steel band |
| CN104562120A (en) * | 2015-01-23 | 2015-04-29 | 张家港市新港星科技有限公司 | Steel strip tinning method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103695991A (en) * | 2013-11-25 | 2014-04-02 | 中冶南方工程技术有限公司 | Electroplating current optimization method applicable to continuous electrotinning unit |
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2017
- 2017-09-15 CN CN201710833204.7A patent/CN107740173B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5521544A (en) * | 1978-08-02 | 1980-02-15 | Kawasaki Steel Corp | Method of manufacturing electroplated tin plate |
| CN1918328A (en) * | 2003-12-23 | 2007-02-21 | 克里斯塔尔公司 | Improved metal strip electroplating |
| KR20060071716A (en) * | 2004-12-22 | 2006-06-27 | 주식회사 포스코 | System for preventing excessive plating for edge of strip |
| CN1935391A (en) * | 2005-09-21 | 2007-03-28 | 拉塞斯坦有限公司 | Method for lowering the coefficient of friction of the surface of metal bands with a coating and device for applying a metallic coating onto a steel band |
| CN104562120A (en) * | 2015-01-23 | 2015-04-29 | 张家港市新港星科技有限公司 | Steel strip tinning method |
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