CN101504403B - Detection of roller coat chromizing membrane evenness by water cooking method - Google Patents
Detection of roller coat chromizing membrane evenness by water cooking method Download PDFInfo
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- CN101504403B CN101504403B CN200910128493A CN200910128493A CN101504403B CN 101504403 B CN101504403 B CN 101504403B CN 200910128493 A CN200910128493 A CN 200910128493A CN 200910128493 A CN200910128493 A CN 200910128493A CN 101504403 B CN101504403 B CN 101504403B
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Abstract
The invention discloses a method for detecting the uniformity of a roller coating chromizing film by a water boiling method. The method comprises the following steps: (1) sampling: a roller coating chromizing sample is picked up from a colorful aluminum alloy coiled material, and the sample is required to be smooth and free of oil stains and damage; (2) preparing alkali solution, namely an NaOH solution of which the pH value is between 7.5 and 9 is prepared and heated to be boiled; (3) water boiling: the sample is put in the boiling NaOH solution, subjected to water boiling for 30 minutes, taken out, cleaned and air-dried or oven-dried, and then the surface of the sample is visually observed; and (4) making the uniformity judgment. According to the chemical property of the chromizing film that the sample can be oxidized and discolored when boiled in water, the uniformity of the thickness of the chromizing film can be judged by the uniformity of color; moreover, the detection method has the advantages of convenience and quickness, short time, and accuracy and reliability.
Description
Technical field
The present invention relates to the homogeneity that a kind of water-boiling method detects roller coat chromaking film, the method that particularly homogeneity of roller coat chromaking film on the colored aluminum coiled material coating product is detected.
Background technology
Colored aluminum coiled material coating product must carry out degreasing, washing and roller coat chromaking to band and handle the wherein effect of chromaking film before carrying out coating: the one, and the adhesion of raising coating and base material; The 2nd, the serviceable life of enhancement coating.The quality of film of chromaking film heavy (thickness) and homogeneity decision chromaking film influences end product quality.The inhomogeneous band horizontal direction membrane thickness unevenness that is meant of roller coat chromaking film, some many some few or some no chromaking film, it is inconsistent to influence the horizontal coating performance of band like this.
The film of measuring the chromaking film is heavy, and the method that adopts at present has chemical method-demoulding weight method and instrument detecting method-X ray detection method, accurately the chromaking film weight of measuring unit's area.But how to detect the homogeneity of band horizontal direction chromaking film; The inquiry related data; Not finding detection method as yet, is to guarantee by technology at present, as: be coated with homogeneity, roller speed proportioning, the tank liquor concentration on roller surface and aspect such as strengthen management guarantees through control; Concrete as people such as Liu Hongjun point out to help obtaining even fine and closely woven chromaking film (Liu Hongjun through strengthening management in " influencing the factor of aluminium alloy chromaking film quality "; Influence the factor of aluminium alloy chromaking film quality. application and plating, 2009,01:21-37.).But how homogeneity can't judge, takes place unusually in the production run, and the quality that can't accurately know the chromaking film how.Therefore, often find that aborning film performance is unstable, the horizontal film performance of band is inconsistent.
Summary of the invention
The purpose of this invention is to provide the homogeneity that a kind of water-boiling method detects roller coat chromaking film, this detection method can accurately be judged the homogeneity of chromaking film, and the time is short.
For solving the problems of the technologies described above, technical scheme provided by the present invention is: a kind of detection method of roller coat chromaking film uniformity may further comprise the steps:
1. sampling: get the chromaking sample from the colored aluminum coiled material, sample requires smooth, no greasy dirt and damage;
2. modulate alkali lye: preparation NaOH solution, the pH value is 7.5～9, is heated to boiling;
3. poach: sample is put into the NaOH solution of boiling, and poach 30 minutes takes out, and rinses well, dry or dry moisture after visual observations surperficial;
4. homogeneity is judged:
A, the no any striped in surface, color even, the chromaking film is very even;
B, the fragmentary striped in surface, color even, the chromaking film is more even;
C, surface detail striped, the chromaking film is even;
D, striated surface are slightly and many, and the chromaking film is inhomogeneous.
The step 2. pH value of middle NaOH solution is preferably 8.
The 3. middle poach time of step is preferably 30 minutes.
The advantage that the present invention has: this detection method is according to the chemical characteristic of chromaking film, and sample is oxidation stain in poach, judges through the homogeneity of color whether the chromaking film thickness is even.This detection method is convenient and swift, and the time is short, accurately and reliably.
Embodiment:
Embodiment 1
A kind of water-boiling method detects the homogeneity of roller coat chromaking film, may further comprise the steps:
1. sampling: get the finished product sample from the colored aluminum coil production line, sample requires smooth, no greasy dirt and damage;
2. modulate alkali lye: preparation NaOH solution, the pH value is 7.5, is heated to boiling;
3. poach: sample is put into the NaOH solution of boiling, and poach 20 minutes takes out, and rinses well, dry or dry moisture after visual observations surperficial;
4. homogeneity is judged:
A, the no any striped in surface, color even, the chromaking film is very even;
B, the fragmentary striped in surface, color even, the chromaking film is more even;
C, surface detail striped, the chromaking film is even;
D, striated surface are slightly and many, and the chromaking film is inhomogeneous.
Embodiment 2
A kind of water-boiling method detects the homogeneity of roller coat chromaking film, may further comprise the steps:
1. sampling: get the finished product sample from the colored aluminum coil production line, sample requires smooth, no greasy dirt and damage;
2. modulate alkali lye: preparation NaOH solution, the pH value is 9, is heated to boiling;
3. poach: sample is put into the NaOH solution of boiling, and poach 50 minutes takes out, and rinses well, dry or dry moisture after visual observations surperficial;
4. homogeneity is judged:
A, the no any striped in surface, color even, the chromaking film is very even;
B, the fragmentary striped in surface, color even, the chromaking film is more even;
C, surface detail striped, the chromaking film is even;
D, striated surface are slightly and many, and the chromaking film is inhomogeneous.
Embodiment 3
A kind of water-boiling method detects the homogeneity of roller coat chromaking film, may further comprise the steps:
1. sampling: get the finished product sample from the colored aluminum coil production line, sample requires smooth, no greasy dirt and damage;
2. modulate alkali lye: preparation NaOH solution, the pH value is 8, is heated to boiling;
3. poach: sample is put into the NaOH solution of boiling, and poach 30 minutes takes out, and rinses well, dry or dry moisture after visual observations surperficial;
4. homogeneity is judged:
A, the no any striped in surface, color even, the chromaking film is very even;
B, the fragmentary striped in surface, color even, the chromaking film is more even;
C, surface detail striped, the chromaking film is even;
D, striated surface are slightly and many, and the chromaking film is inhomogeneous.
The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction; Though the present invention discloses as above with preferred embodiment; Yet be not in order to limiting the present invention, anyly be familiar with the professional and technical personnel, in not breaking away from technical scheme scope of the present invention; When the technology contents of above-mentioned announcement capable of using is made a little change or is modified to the equivalent embodiment of equivalent variations; In every case be the content that does not break away from technical scheme of the present invention, to any simple modification, equivalent variations and modification that above embodiment did, all still belong in the scope of technical scheme of the present invention according to technical spirit of the present invention.
Claims (3)
1. a water-boiling method detects the homogeneity of roller coat chromaking film, may further comprise the steps:
1. sampling: get the chromaking sample from the colored aluminum coiled material, sample requires smooth, no greasy dirt and damage;
2. modulate alkali lye: preparation NaOH solution, the pH value is 7.5～9, is heated to boiling;
3. poach: sample is put into the NaOH solution of boiling, and poach 20～50 minutes takes out, and rinses well, dry or dry moisture after visual observations surperficial;
4. homogeneity is judged:
A, the no any striped in surface, color even, the chromaking film is very even;
B, the fragmentary striped in surface, color even, the chromaking film is more even;
C, surface detail striped, the chromaking film is even;
D, striated surface are slightly and many, and the chromaking film is inhomogeneous.
2. water-boiling method according to claim 1 detects the homogeneity of roller coat chromaking film, it is characterized in that: the step 2. pH value of middle NaOH solution is 8.
3. water-boiling method according to claim 1 detects the homogeneity of roller coat chromaking film, it is characterized in that: the 3. middle poach time of step is 30 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910128493A CN101504403B (en) | 2009-03-23 | 2009-03-23 | Detection of roller coat chromizing membrane evenness by water cooking method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910128493A CN101504403B (en) | 2009-03-23 | 2009-03-23 | Detection of roller coat chromizing membrane evenness by water cooking method |
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| Publication Number | Publication Date |
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| CN101504403A CN101504403A (en) | 2009-08-12 |
| CN101504403B true CN101504403B (en) | 2012-09-26 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2902348A (en) * | 1955-08-03 | 1959-09-01 | Allied Res Products Inc | Testing material |
| US4383042A (en) * | 1981-07-16 | 1983-05-10 | Mcdonnell Douglas Corporation | Process for detecting soft spots in aluminum |
| US4546087A (en) * | 1982-10-29 | 1985-10-08 | Deere & Company | Method for detecting the presence of a chromate coating on aluminum |
| CN2435740Y (en) * | 2000-06-02 | 2001-06-20 | 唐能诚 | Device for on-line monitoring thin-film, coating and homogeneity of coating thickness |
| CN1407335A (en) * | 2001-08-07 | 2003-04-02 | 精工电子有限公司 | X-ray coating thickness device |
| CN1489689A (en) * | 2001-02-12 | 2004-04-14 | �Ƚ�װ�ù�˾ | Automated control of metal thickness during film deposition |
| CN101283268A (en) * | 2005-10-04 | 2008-10-08 | 特莫尼托恩分析仪器股份有限公司 | Analysis of elemental composition and thickness in multilayered materials |
-
2009
- 2009-03-23 CN CN200910128493A patent/CN101504403B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2902348A (en) * | 1955-08-03 | 1959-09-01 | Allied Res Products Inc | Testing material |
| US4383042A (en) * | 1981-07-16 | 1983-05-10 | Mcdonnell Douglas Corporation | Process for detecting soft spots in aluminum |
| US4546087A (en) * | 1982-10-29 | 1985-10-08 | Deere & Company | Method for detecting the presence of a chromate coating on aluminum |
| CN2435740Y (en) * | 2000-06-02 | 2001-06-20 | 唐能诚 | Device for on-line monitoring thin-film, coating and homogeneity of coating thickness |
| CN1489689A (en) * | 2001-02-12 | 2004-04-14 | �Ƚ�װ�ù�˾ | Automated control of metal thickness during film deposition |
| CN1407335A (en) * | 2001-08-07 | 2003-04-02 | 精工电子有限公司 | X-ray coating thickness device |
| CN101283268A (en) * | 2005-10-04 | 2008-10-08 | 特莫尼托恩分析仪器股份有限公司 | Analysis of elemental composition and thickness in multilayered materials |
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| CN101504403A (en) | 2009-08-12 |
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