CN1677083A - Tin-plated board corrosion-resistance rapid detecting method - Google Patents
Tin-plated board corrosion-resistance rapid detecting method Download PDFInfo
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- CN1677083A CN1677083A CN 200410017280 CN200410017280A CN1677083A CN 1677083 A CN1677083 A CN 1677083A CN 200410017280 CN200410017280 CN 200410017280 CN 200410017280 A CN200410017280 A CN 200410017280A CN 1677083 A CN1677083 A CN 1677083A
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Abstract
The invention relates to a tin coating surface survey technique especially to the eroding resistance fast test. Its main steps include: 1. sampling on the sheet; 2. uncoat tin from the sample; 3. white degree test, put the sample in to white degree apparatus and record the test value; 4. compare and judge the test value with eroding resistance degree. The quality is good if white degree is 16 or higher, normal if between 14 to 15 and bad if less than 13. the invention test in physical method and the device and sample process is simple, easy and stable, fast, can be used in daily survey and non-routine survey.
Description
(1) technical field
The present invention relates to the tin plate sheet surface detection technique, relate in particular to tin plate corrosion stability method for quick.
(2) background technology
Tin plate is mainly used in the food cans field, and it generally is to adopt electrochemical process that corrosion situation complexity, tin plate corrosion stability detect.Introduced the electrochemical apparatus that detects usefulness about the tin plate corrosion stability as U.S. Pat 3684679.The detection method patent of concentration of medium when the tin plate sampling when European patent EP 1106986 has been introduced and detected corrosion stability about the tin plate electrochemical process, oil removing, detin and detection, electrode current, time etc.What the detection of tin plate corrosion stability was the most authoritative is the alloy-Xi galvanic couple test method of electrochemical process, is called for short the ATC test, and this method has been listed ASTM standard and Chinese national standard in.The principle of ATC test is the circulating current of measuring between pure tin battery lead plate and the tin plate electrode, and pure tin powers on from tin plate and separates and expose iron one ashbury metal at this moment, actual detected be potential difference (PD) between pure tin and tin-iron alloy layer.This inspection machine complexity, trace routine is various, detection time is long, and one-time detection is prepared to need 24 hours to detecting to finish from test, and detecting operation requires high, difficulty is big, the sample shielding processing of waxing, working medium, nitrogen flushing treatment effect, the vibration when detecting etc. are all influential to testing result, and 12.7 * 114.3 millimeters tin plate is used in test in addition, area of detection only is 230 square millimeters a small area, and the reference role of whole tin plate is also had certain restriction.
(3) summary of the invention
The object of the present invention is to provide a kind of tin plate corrosion stability method for quick, this method for quick adopts the physics method to detect, the time that can shorten test greatly and spent makes detection accelerate the quality of production feedback of tin plate, helps reducing the generation of defective tin plate in batches; This method for quick can reduce the frequency that ATC detects in a large number as a kind of daily detection means simultaneously, reduces the working strength that the tin plate corrosion stability detects, and this detection method is simple to operate, and testing process is stable, and detection speed is fast.
The present invention is achieved in that a kind of tin plate corrosion stability method for quick, and its operation steps comprises:
(1) tin plate sampling is got the disk sample with the tin plate model in the stamping machine upper punch;
(2) detin is handled, and earlier the tin plate sample is cleaned with electrochemical process, promptly cleans by the anode and cathode alternate energisation, puts into after the cleaning by NaOH and KIO
3Slough the tin layer in the solution of forming;
(3) measuring brightness is put into the whiteness instrument with sample and is detected and write down detected value;
(4) compare to determine, detected value is judged the corrosion stability rank, whiteness value is an one-level more than or equal to 16, and quality is for well; Whiteness value is a secondary at 14 to 15, and quality is general; Whiteness value is three grades smaller or equal to 13, and quality is for poor.
Above-mentioned tin plate corrosion stability method for quick is describedly handled being judged to be the repetition measurement that the secondary corrosion stability remakes ATC.
Above-mentioned tin plate corrosion stability method for quick is describedly done earlier to remake quality judging after ATC sampling observation is handled to being judged to be three grades of corrosion stabilitys.
Above-mentioned tin plate corrosion stability method for quick, described Width diverse location at tin plate is taken a sample respectively three and is detected judgement, and testing result is averaged.
Principle of work of the present invention is to set about from the corrosion stability of research tin plate alloy-layer, the amount of alloy-layer and tissue topography influence the corrosion proof principal element of alloy-layer, under the stable precondition of alloy-layer amount, there are corresponding relation in alloy-layer tissue topography and corrosion stability, detect reflection alloy-layer pattern homogeneity until the corrosion proof method of reflection thereby proposed employing whiteness method.This is that the major influence factors that ATC detects is the pattern of alloy-layer because the control of alloy-layer amount is relative with detection very easy and stable.The alloy-layer pattern can detect by scanning electron microscope, is microcosmos area but scanning electron microscope detects, often can not reflect that the tin plate model is whole.Adopt whiteness method detection method, for the tin plate alloy-layer, if the whiteness value on alloy-layer surface is lower, the arrangement that just shows alloy-layer crystal grain is just neat inadequately, there are incomplete situations such as cavity in densification or alloy-layer, thereby what the roughness on alloy-layer surface just showed on macroscopic view is bigger, and the whiteness value that records is also just lower.
The test philosophy of whiteness instrument is to utilize the standard light that is sent by halogen tungsten lamp, form blue violet ray through condenser and color filter, enter integrating sphere, light is after the diffuse reflection of integrating sphere inwall, be radiated on the tested sample of test port, by the irradiate light of sample reflection to receptacle, through condenser, diaphragm, color filter group, accept by silicon photocell, convert electric signal to, other has one road silicon photocell to accept the interior basal signal of spheroid, and two path signal is amplified respectively, mixed, and shows result of calculation by charactron.
A large amount of whiteness value and ATC value backs of detecting the tin plate alloy-layer find that the surperficial whiteness of alloy-layer ATC value and alloy-layer is the better linearity relation, and the ATC value is more little, and whiteness value is big more.Therefore can under the certain situation of alloy-layer amount, evaluate with the whiteness method the corrosion stability of alloy-layer.The whiteness detection method is owing to be the physical detection method, with electrochemical process, Electronic Speculum detect compare simple to operate, good stability, area of detection is big, can reflect the actual mass level of tin plate model more comprehensively.
By adopting the whiteness method, improve the corrosion stability detection speed in the time of can making tin plate factory produce tin plate, shorten and detect feedback cycle, accelerate the judgement and the improvement of quality, prevent the generation of unacceptable product in batches; As the daily detection method of a kind of product on production line quality, match with the ATC detection method, can reduce the frequency that ATC detects in a large number, alleviate the working strength that tin plate plate corrosion stability detects; The whiteness method is the corrosion stability detection method of physics, and checkout equipment, model are handled, detecting operation is simple, and testing process is stable, and detection speed is fast, daily detection and unconventional sampling Detection when can be used for the tin plate production of tin plate factory.
(4) description of drawings
Fig. 1 is whiteness value and ATC value distribution plan.
(5) embodiment
Provide embodiments of the invention below in conjunction with accompanying drawing.
Embodiment 1
The YQ-Z-48A whiteness colour measurement instrument that adopts the gently logical instrument development company in Hangzhou to produce is used for the whiteness of sampling Detection tin plate anticorrosion alloy layer.
Its concrete operations step is as follows:
(1) tin plate sampling
The scene is got tin plate and is produced sample, on the stamping machine with Width on 25.4 millimeters three on the disk sample towards the cut-off footpath respectively.
(2) detin is handled
The tin plate print is cleaned with electrochemical method, negative electrode 30 seconds, anode 5 seconds, negative electrode is 30 seconds then, anode 5 seconds, negative electrode 30 seconds; Put into by the NaOH of 20～50g/L and the KIO of 5～10g/L after cleaning
3Slough the tin layer in the solution of forming, the detin time is 10～20 minutes, and present embodiment is put into by the NaOH of 50g/L and the KIO of 10g/L after cleaning
3Slough the tin layer in the solution of forming, the detin time is 15 minutes, dries up fast with hair-dryer after the detin.
(3) measuring brightness
Adjust whiteness instrument zero point and proofreaied and correct the whiteness instrument, the print detection faces is placed detection on request, the record detected value with standard sample.
(4) compare to determine, detected value is judged the corrosion stability rank, with reference to the quality judging of the whiteness value of table 1, whiteness value is an one-level more than or equal to 16, and quality is for well; Whiteness value is a secondary at 14 to 15, and quality is general; Whiteness value is three grades smaller or equal to 13, and quality is for poor.Detect judgement owing to take a sample three respectively, testing result is averaged.
Table 1
| Whiteness value | The corrosion stability decision level | Quality judging |
| ≥16 | One-level | Good |
| 15-14 | Secondary | Generally |
| ≤13 | Three grades | Difference |
If be judged to be the one-level corrosion stability, tin plate can be done to let pass and handle; Being judged to be the repetition measurement that the secondary corrosion stability remakes ATC handles; Do earlier to remake quality judging after the ATC sampling observation is handled to being judged to be three grades of corrosion stabilitys.
Embodiment 2
Nearly three months tin plates are done detection of ATC corrosion stability and the detection of whiteness method, and the distribution plan of its whiteness value and ATC value is referring to Fig. 1.
According to Fig. 1 distribution plan as can be known: when the alloy-layer whiteness value is lower than 12, the ATC value is higher than 0.12 μ A/cm2 basically all, and when the alloy-layer whiteness value is higher than 16, the ATC value is lower than 0.12 μ A/cm2 basically all, and work as the alloy-layer whiteness value and reach after 18, the ATC value of alloy-layer is all between 0.02～0.04 μ A/cm2.
When tin plate alloy-layer whiteness detected value 〉=16, judge that the tin plate corrosion stability is good, corresponding A TC scope is 0.02-0.12, is to determine tin plate ATC level, makes ATC by 1: 10 sample size and detects and inspect by random samples; When whiteness value was 14-15, corrosion stability was judged to be generally, and corresponding A TC scope is 0.06-0.20, because the qualified desired value of ATC is 0.12, this part sample is all made ATC detect; When whiteness value≤13, judge that the tin plate corrosion stability is poor, corresponding A TC scope is 0.10-0.4, is to determine tin plate ATC level, makes ATC by 1: 3 sample size and detects and inspect by random samples, this part amount is less during daily production, also can all detect.
Claims (4)
1. tin plate corrosion stability method for quick, its operation steps comprises:
(1) tin plate sampling is got the disk sample with the tin plate model in the stamping machine upper punch;
(2) detin is handled, and earlier the tin plate sample is cleaned with electrochemical process, promptly cleans by the anode and cathode alternate energisation, puts into after the cleaning by NaOH and KIO
3Slough the tin layer in the solution of forming;
It is characterized in that also comprising (3) measuring brightness, sample is put into the whiteness instrument detect and write down detected value;
(4) compare to determine, detected value is judged the corrosion stability rank, whiteness value is an one-level more than or equal to 16, and quality is for well; Whiteness value is a secondary at 14 to 15, and quality is general; Whiteness value is three grades smaller or equal to 13, and quality is for poor.
2. tin plate corrosion stability method for quick according to claim 1 is characterized in that handling being judged to be the repetition measurement that the secondary corrosion stability remakes ATC.
3. tin plate corrosion stability method for quick according to claim 1 is characterized in that doing earlier to remake quality judging after the ATC sampling observation is handled to being judged to be three grades of corrosion stabilitys.
4. according to claim 1 or 2 or 3 described tin plate corrosion stability method for quick, it is characterized in that taking a sample respectively three and detect judgement at the Width diverse location of tin plate, testing result is averaged.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2004100172803A CN100380112C (en) | 2004-03-29 | 2004-03-29 | Tin-plated board corrosion-resistance rapid detecting method |
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| CNB2004100172803A CN100380112C (en) | 2004-03-29 | 2004-03-29 | Tin-plated board corrosion-resistance rapid detecting method |
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| CN1677083A true CN1677083A (en) | 2005-10-05 |
| CN100380112C CN100380112C (en) | 2008-04-09 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636423A (en) * | 2011-02-12 | 2012-08-15 | 宝山钢铁股份有限公司 | Detection method of tin plate porosity |
| CN103487438A (en) * | 2013-09-23 | 2014-01-01 | 内蒙古新长江矿业投资有限公司 | Method for detecting performance of high-voltage anode aluminum foil product used for electrolytic condenser |
| CN104122195A (en) * | 2014-07-30 | 2014-10-29 | 奥瑞金包装股份有限公司 | Detection liquid for detecting corrosion resistance of surface passivation film of tinned steel plate |
| CN104749091A (en) * | 2015-04-27 | 2015-07-01 | 上海外高桥造船有限公司 | Testing method for corrosion resistant performance of high-temperature-resisting workshop primer |
| CN105021516A (en) * | 2014-04-15 | 2015-11-04 | 上海梅山钢铁股份有限公司 | Testing liquid and testing adhesion film for detecting tin plating plate corrosion resistance, and detection method thereof |
| CN106153530A (en) * | 2015-03-23 | 2016-11-23 | 上海宝钢工业技术服务有限公司 | Tin plate decay resistance detecting system and method |
| CN108085738A (en) * | 2016-11-22 | 2018-05-29 | 上海宝钢工业技术服务有限公司 | The sample pretreatment device and method of tin plate alloy-tin galvanic couple experiment |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6564620B1 (en) * | 1998-06-29 | 2003-05-20 | Conditions Incorporated | Visually indicating corrosion sensing |
| DE19959748C1 (en) * | 1999-12-11 | 2001-06-21 | Rasselstein Hoesch Gmbh | Method of measuring the corrosion resistance of tinplate |
| JP3597439B2 (en) * | 2000-03-16 | 2004-12-08 | 株式会社巴コーポレーション | Diagnosis method for paint deterioration of painted steel |
-
2004
- 2004-03-29 CN CNB2004100172803A patent/CN100380112C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636423A (en) * | 2011-02-12 | 2012-08-15 | 宝山钢铁股份有限公司 | Detection method of tin plate porosity |
| CN103487438A (en) * | 2013-09-23 | 2014-01-01 | 内蒙古新长江矿业投资有限公司 | Method for detecting performance of high-voltage anode aluminum foil product used for electrolytic condenser |
| CN105021516A (en) * | 2014-04-15 | 2015-11-04 | 上海梅山钢铁股份有限公司 | Testing liquid and testing adhesion film for detecting tin plating plate corrosion resistance, and detection method thereof |
| CN105021516B (en) * | 2014-04-15 | 2018-11-23 | 上海梅山钢铁股份有限公司 | A kind of test fluid and test pad pasting and its detection method of detection tin-plated board corrosion-resistance |
| CN104122195A (en) * | 2014-07-30 | 2014-10-29 | 奥瑞金包装股份有限公司 | Detection liquid for detecting corrosion resistance of surface passivation film of tinned steel plate |
| CN104122195B (en) * | 2014-07-30 | 2017-02-01 | 奥瑞金包装股份有限公司 | Detection liquid for detecting corrosion resistance of surface passivation film of tinned steel plate |
| CN106153530A (en) * | 2015-03-23 | 2016-11-23 | 上海宝钢工业技术服务有限公司 | Tin plate decay resistance detecting system and method |
| CN104749091A (en) * | 2015-04-27 | 2015-07-01 | 上海外高桥造船有限公司 | Testing method for corrosion resistant performance of high-temperature-resisting workshop primer |
| CN104749091B (en) * | 2015-04-27 | 2017-09-15 | 上海外高桥造船有限公司 | The Corrosion Protection method of testing of high-temperature resistant workshop primer |
| CN108085738A (en) * | 2016-11-22 | 2018-05-29 | 上海宝钢工业技术服务有限公司 | The sample pretreatment device and method of tin plate alloy-tin galvanic couple experiment |
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|---|---|
| CN100380112C (en) | 2008-04-09 |
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