CN201159727Y - Electrolyzing device for tin plate sheet detection - Google Patents
Electrolyzing device for tin plate sheet detection Download PDFInfo
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- CN201159727Y CN201159727Y CNU2008200558431U CN200820055843U CN201159727Y CN 201159727 Y CN201159727 Y CN 201159727Y CN U2008200558431 U CNU2008200558431 U CN U2008200558431U CN 200820055843 U CN200820055843 U CN 200820055843U CN 201159727 Y CN201159727 Y CN 201159727Y
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Abstract
The utility model discloses an electrolysis unit used for the tin plate detection; the electrolysis unit comprises a body; one side end surface of the body is provided with a sample hole; an electrolyte containing cavity is arranged in the body and communicated with the sample hole; one side of the electrolyte containing cavity is provided with a reference electrode insertion hole and a conical projection; an auxiliary electrode is arranged on the external wall of the conical projection and a through hole is arranged in the interior of the conical projection and communicated with the electrolyte containing cavity and the reference electrode insertion hole; an vent hole and a liquid inlet are arranged on the top part of the body. The electrolysis device has the advantages of simple structure, convenient application and being applicable to the multi-property detection of various surface films and the plating layer of the tin plate.
Description
Technical field
The utility model relates to the electrochemical measuring technique of tin plate performance, more particularly, relates to a kind of electrolysis unit that tin plate detects that is used for, and this electrolysis unit can be used in the detection of tin plate multinomial performance.
Background technology
Tin plate is widely used in the making of various reservoir vessels as a kind of common sheet material.At present, most tin plate all passes through soft heat and handles, and therefore, tin and iron produced the tin iron alloy layer that reaction generates when resulting coating was generally pure stannum layer and soft heat heating; The surface of tin plate is covered with oxide film to a certain degree usually, and the tin-oxide that additionally produces between the storage life at tin plate can have influence on the performance of tin plate at aspects such as outward appearance, covering with paint and solderings; For the storage and the japanning performance that improve tin plate, tin plate also all need pass through Passivation Treatment, thereby forms passivating film; In addition, some " K " level tin plates that are exclusively used in acid fruits and vegetables hold-up vessel also must have the alloy-layer of highly corrosion resistant, are used to prolong the serviceable life of hold-up vessel.Therefore, the coating and the various surface film of above-mentioned tin plate being detected, can directly reflect the excellent performance degree of this tin plate, no matter for production firm or user, all is crucial.But; because the detection oxide film need feed blanket gas and seal; the inflation medium polarimetric test that is used for the corrosion resistance of detection " K " level tin plate alloy-layer (is called for short AMP; Unite States Standard (USS) ASTM623) must in the laboratory, carry out; therefore to the detection of coating and each surface film of above-mentioned tin plate; all can only in special separately electrolytic tank, carry out at present; the structure of each electrolytic tank is all inequality; and function singleness; promptly separately only for being used for corresponding Performance Detection; can't be used to detect other performance, and the electrolytic cell operation that uses in the laboratory is complicated, is not suitable for using in factory.
The utility model content
At the above-mentioned electrolytic tank function singleness of the every Performance Detection of tin plate, the shortcoming that can't carry out multiple detection of being used for that exists in the prior art, the purpose of this utility model provides a kind of electrolysis unit that tin plate detects that is used for, and this electrolysis unit can be respectively applied for the detection of tin plate multinomial performance.
For achieving the above object, the utility model adopts following technical scheme:
This electrolysis unit that is used for the tin plate detection comprises body, body one side end face has sample aperture, body interior is provided with the electrolytic solution cavity volume, electrolytic solution cavity volume one end is connected with sample aperture, electrolytic solution cavity volume one side is provided with reference electrode reference electrode plug, also is provided with a pyramidal projections in the electrolytic solution cavity volume, and the pyramidal projections outer wall is provided with auxiliary electrode, inside has through hole, and the through hole two ends are connected with electrolytic solution cavity volume, reference electrode reference electrode plug respectively; Bodies top also has air hole and inlet opening, and is connected with the electrolytic solution cavity volume respectively.
Described electrolytic solution cavity volume is designed to cylindrical cavity and two parts of round platform cavity, round platform cavity horizontally set, and an end is connected with cylindrical cavity, and the other end is connected with sample aperture.
The top of described cylindrical cavity is higher than the top of round platform cavity.
Described air hole is two, is connected with the top of cylindrical cavity respectively.
The lower end of described inlet opening is connected with U trap, and the U trap other end is connected with the bottom of electrolytic solution cavity volume.
Also have outlet on the described body, described auxiliary electrode one end is around the pyramidal projections outer wall, and the other end passes body by outlet.
Described auxiliary electrode is platinum wire or pure tin silk.
Also be provided with the mounting template that is complementary in the described sample aperture, have through hole on the mounting template.
In technique scheme, the electrolysis unit that is used for the tin plate detection of the present utility model comprises body, body one side end face has sample aperture, body interior is provided with the electrolytic solution cavity volume, and is connected with sample aperture, and electrolytic solution cavity volume one side is provided with reference electrode reference electrode plug, also be provided with a pyramidal projections in the electrolytic solution cavity volume, the pyramidal projections outer wall is provided with auxiliary electrode, and inside has through hole, and is connected with electrolytic solution cavity volume, reference electrode reference electrode plug respectively; Bodies top also has air hole and inlet opening.This electrolysis unit is simple in structure, easy to use, by sample aperture sample is installed, and can be fed blanket gas by air hole, can be respectively applied for the detection of the multinomial performance of the coating of tin plate and various surface film.
Description of drawings
Fig. 1 is the structural drawing that is used for the electrolysis unit of tin plate detection of the present utility model;
Fig. 2 is the structure cut-open view of electrolysis unit of the present utility model.
Embodiment
Further specify the technical solution of the utility model below in conjunction with drawings and Examples.
See also shown in Figure 1, the electrolysis unit 10 that is used for the tin plate detection of the present utility model comprises body 11, body 11 is the cuboid structure, body 11 1 side end faces have sample aperture 111, body 11 inside are provided with electrolytic solution cavity volume 12, please in conjunction with shown in Figure 2, electrolytic solution cavity volume 12 is designed to cylindrical cavity 121 and 122 two parts of round platform cavity, round platform cavity 122 horizontally sets, one end is connected with cylindrical cavity 121, the other end is connected with sample aperture 111, and the top of cylindrical cavity 121 is higher than the top of round platform cavity 122, and the bottom of cylindrical cavity 121 also is lower than the bottom of round platform cavity 122.Electrolytic solution cavity volume 12 1 sides are provided with reference electrode reference electrode plug 13, be used to be provided with contrast electrode (mercurous chloride electrode), also be provided with a pyramidal projections 14 in the electrolytic solution cavity volume 12, pyramidal projections 14 outer walls are provided with auxiliary electrode, pyramidal projections 14 inside have through hole 141, and through hole 141 two ends are connected with electrolytic solution cavity volume 12, reference electrode reference electrode plug 13 respectively; Body 11 tops also have air hole 112 and inlet opening 113; air hole 112 is two; top with cylindrical cavity 121 is connected respectively; when to wherein charging into blanket gas in the air hole 112; and from another air hole 112, discharge; the head portion inside that so just can make cylindrical cavity 121 be higher than round platform cavity 122 is full of blanket gas, makes that electrolytic solution and the aeroseal in the cavity volume of bottom is isolated, can be used for the detection of tin plate oxide film.The lower end of inlet opening 113 is connected with U trap 15, and U trap 15 other ends are connected with cylindrical cavity 121 bottoms of electrolytic solution cavity volume 12.Also have outlet 114 on the body 11, auxiliary electrode adopts platinum wire or pure tin silk, and an end is around pyramidal projections 14 outer walls, and the other end passes body 11 by outlet 114.In addition, one rubber seal is arranged in the sample aperture 111, its internal diameter size is by the maximum test of tin plate size design, when other size of needs, the mounting template that can adopt the size of a size and sample aperture 111 to be complementary, on mounting template, have the through hole that is complementary with test standard, mounting template is located at sample aperture 111 interior getting final product.
During use, can adopt the single face of 10 pairs of samples of this electrolysis unit to detect, also can adopt two these electrolysis units 10 is one group, and the tow sides to sample detect simultaneously.Be example to carry out the tow sides detection simultaneously below, describe: two electrolysis units 10 are oppositely arranged, and a detected sample is located at middle, with anchor clamps or air-leg two electrolysis units 10 are clamped mutually then, again contrast electrode is put into reference electrode reference electrode plug 13, and then sample is connected conducting with working electrode, detection will be housed at last separates the filtering flask of liquid and is communicated with the U trap 15 of inlet opening 113 by conduit, and filtering flask mentioned or tilt, electrolytic solution is injected in the electrolytic solution cavity volume 12, just can detect, after detecting end, only need filtering flask is placed below the cylindrical cavity 121 bottom horizontal lines, electrolytic solution all can be drawn.Need to prove at this,, should before injecting electrolytic solution, feed blanket gas earlier, and keep flowing of blanket gas if the electrolytic solution that injects must be isolated with air.
Adopt this electrolysis unit 10 can the multinomial performance of the corrosion resistance of the coating of following tin plate (free tin layer and tin iron alloy layer), oxide film, passivating film and " K " level tin plate alloy-layer be detected:
The free tin amount and the alloy-layer amount of coating are that one-shot measurement is finished, the electrolytic solution that adopts is hydrochloric acid solution, under the effect of anode current, free tin layer and required time of alloy-layer dissolving, distinguished and showed by the potential change between sample and the contrast electrode.Zinc-plated amount is calculated and is got from the time interval of electric current and dissolving.Current density range is 4～10Ma/cm2, begins from free tin layer dissolving that total potential change is about 180mV till finally expose base steel.
The measurement of oxide film is carried out in the nonreactive electrolytic solution at a kind of oxygen-free and with tin-oxide, and by Weak current the tin-oxide of tin plate sheet surface oxide film is reduced, and whole measuring process is carrying out under isolated with oxygen at blanket gas all.The tin-oxide amount is reduced the electric weight that is passed through fully with oxide and is measured.Suitable current density is 25 μ A/cm2, and potential range is usually with respect to the negative value 400～1000mV of contrast electrode.
The chrome content measurement of passivating film is to carry out in a kind of buffering electrolytic solution of neutrality, and by sample being passed to constant anode current, current density is 25 μ A/cm2, and in the scope of 500～1500mV current potential, the shared time of the oxidation reaction of chromium can be converted into the chrome content of tin plate sheet surface.
More than three kinds of auxiliary electrodes that detect to adopt be platinum wire.
The inflation medium polarimetric test (AMP) of " K " level tin plate alloy film is under high current density sample to be carried out cathodic polarization, under given current density, logical go up the base steel area ratio that potential change after the electric current depends on exposure, with hyperpolarization change at a slow speed section with the potential value at the intersection point place that changes section fast as the AMP value.Before the test, the mounting template that the aperture can be met ASTM623 examination criteria size is placed in the sample aperture 111, and selecting the pure tin silk simultaneously for use is auxiliary electrode.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in claims scope of the present utility model variation, the modification of the above embodiment.
Claims (8)
1. one kind is used for the electrolysis unit that tin plate detects, and it is characterized in that:
This electrolysis unit comprises body, body one side end face has sample aperture, body interior is provided with the electrolytic solution cavity volume, electrolytic solution cavity volume one end is connected with sample aperture, electrolytic solution cavity volume one side is provided with reference electrode reference electrode plug, also is provided with a pyramidal projections in the electrolytic solution cavity volume, and the pyramidal projections outer wall is provided with auxiliary electrode, inside has through hole, and the through hole two ends are connected with electrolytic solution cavity volume, reference electrode reference electrode plug respectively; Bodies top also has air hole and inlet opening, and is connected with the electrolytic solution cavity volume respectively.
2. the electrolysis unit that is used for the tin plate detection as claimed in claim 1 is characterized in that:
Described electrolytic solution cavity volume is designed to cylindrical cavity and two parts of round platform cavity, round platform cavity horizontally set, and an end is connected with cylindrical cavity, and the other end is connected with sample aperture.
3. the electrolysis unit that is used for the tin plate detection as claimed in claim 2 is characterized in that:
The top of described cylindrical cavity is higher than the top of round platform cavity.
4. as each described electrolysis unit that is used for the tin plate detection in the claim 1～3, it is characterized in that:
Described air hole is two, is connected with the top of cylindrical cavity respectively.
5. the electrolysis unit that is used for the tin plate detection as claimed in claim 1 is characterized in that:
The lower end of described inlet opening is connected with U trap, and the U trap other end is connected with the bottom of electrolytic solution cavity volume.
6. the electrolysis unit that is used for the tin plate detection as claimed in claim 1 is characterized in that:
Also have outlet on the described body, described auxiliary electrode one end is around the pyramidal projections outer wall, and the other end passes body by outlet.
7. the electrolysis unit that is used for the tin plate detection as claimed in claim 6 is characterized in that:
Described auxiliary electrode is platinum wire or pure tin silk.
8. the electrolysis unit that is used for the tin plate detection as claimed in claim 1 is characterized in that:
Also be provided with the mounting template that is complementary in the described sample aperture, have through hole on the mounting template.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200558431U CN201159727Y (en) | 2008-02-29 | 2008-02-29 | Electrolyzing device for tin plate sheet detection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200558431U CN201159727Y (en) | 2008-02-29 | 2008-02-29 | Electrolyzing device for tin plate sheet detection |
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| CN201159727Y true CN201159727Y (en) | 2008-12-03 |
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| CNU2008200558431U Expired - Fee Related CN201159727Y (en) | 2008-02-29 | 2008-02-29 | Electrolyzing device for tin plate sheet detection |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998353A (en) * | 2011-09-15 | 2013-03-27 | 上海宝钢工业检测公司 | Automatic sample treatment test apparatus for determining lead in tin plate plating layer |
| CN102997832A (en) * | 2011-09-15 | 2013-03-27 | 上海宝钢工业检测公司 | Automatic measuring system for tin plate surface oxide film coatings |
| CN103901082A (en) * | 2012-12-27 | 2014-07-02 | 宝山钢铁股份有限公司 | Device for automatically measuring surface chromium content on tin plate by using electrolytic process and determination terminal point judgment method |
| CN105319258A (en) * | 2014-07-08 | 2016-02-10 | 宝山钢铁股份有限公司 | Method for determining quality of chromium oxide coating in chromium electroplated plate |
-
2008
- 2008-02-29 CN CNU2008200558431U patent/CN201159727Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998353A (en) * | 2011-09-15 | 2013-03-27 | 上海宝钢工业检测公司 | Automatic sample treatment test apparatus for determining lead in tin plate plating layer |
| CN102997832A (en) * | 2011-09-15 | 2013-03-27 | 上海宝钢工业检测公司 | Automatic measuring system for tin plate surface oxide film coatings |
| CN102998353B (en) * | 2011-09-15 | 2016-08-10 | 上海宝钢工业技术服务有限公司 | In tin plate coating, lead measures sample treatment automatic test equipment |
| CN103901082A (en) * | 2012-12-27 | 2014-07-02 | 宝山钢铁股份有限公司 | Device for automatically measuring surface chromium content on tin plate by using electrolytic process and determination terminal point judgment method |
| CN103901082B (en) * | 2012-12-27 | 2016-06-29 | 宝山钢铁股份有限公司 | Tin plate sheet surface chromium amount electrolysis self-operated measuring unit and mensuration endpoint method |
| CN105319258A (en) * | 2014-07-08 | 2016-02-10 | 宝山钢铁股份有限公司 | Method for determining quality of chromium oxide coating in chromium electroplated plate |
| CN105319258B (en) * | 2014-07-08 | 2017-11-28 | 宝山钢铁股份有限公司 | The measuring method of chromated oxide coating in a kind of electroplated chrome panel |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081203 Termination date: 20160229 |