CN102011124B - Surface treatment method of tin-plated steel plate - Google Patents
Surface treatment method of tin-plated steel plate Download PDFInfo
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- CN102011124B CN102011124B CN201010505833A CN201010505833A CN102011124B CN 102011124 B CN102011124 B CN 102011124B CN 201010505833 A CN201010505833 A CN 201010505833A CN 201010505833 A CN201010505833 A CN 201010505833A CN 102011124 B CN102011124 B CN 102011124B
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- tin plate
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Abstract
The invention relates to a surface treatment method of an environment-friendly tin-plated steel plate and a steel part made by the method. The surface treatment method comprises the following steps of sputtering one layer of palladium film on the surface of a tin-plated steel plate and carrying out heating treatment. The tin-plated steel plate treated by the method not only has excellent stability, strong mechanical properties and excellent antibacterial properties, but also requires no hexavalent-chromium containing treating liquid strictly restricted on account of environment protection. The method can be broadly used in the field of containers, such as food cans, drink cans, etc.
Description
Technical field
The present invention relates to a kind of surface treatment method of tin plate, specifically at tin plate surface sputtering one deck palladium film and carry out the surface treatment method of heat treated, and steel part obtained by this method.
Background technology
Tin plate is widely used in containers such as food cans, beverages can.And the tin plate of this a large amount of uses, normally in the aqueous solution that contains hexavalent chromium compounds such as dichromic acid, flood, electrolysis treatment, the perhaps direct aqueous solution at its surface-coated hexavalent chromium compound is to form chromate film on the coating surface of steel plate.By the chromate film that forms at surface of steel plate like this, the oxidation on zinc-plated surface suppresses the outward appearance flavescence in the time of can preventing to take care of for a long time.And when using after the application,, can prevent that the cohesion of tin oxide film from destroying, guarantee the compactness of coating owing to suppress the growth of tin oxide film.
But, need use the aqueous solution that contains the sexavalent chrome oxide compound when on the tin plate surface, forming chromate film, and sexavalent chrome is a kind of strong carcinogens, therefore, the waste gas that produces during plated film, waste liquid etc. produce harm greatly to environment.All the more cause today that people pay attention in environmental problem, also severe all the more for the chromic use of restriction, this necessity that makes the chemical conversion of not using chromium in above-mentioned tin plate handle also increases thereupon.
In addition, the tin plate as containers such as food cans, beverages can are used because of it will contact food, the beverage of easy germinating bacterium usually, so not only require it to have excellent stability, also requires it to have excellent germ resistance.Therefore, the germ resistance on raising tin plate surface also is a problem demanding prompt solution.
Summary of the invention
It is a kind of at tin plate surface sputtering one deck palladium film and carry out the surface treatment method of heat treated that purpose of the present invention promptly is to provide, and steel part obtained by this method, this steel part has the stability of excellence, enough use hardness and excellent anti-microbial properties, can be widely used in containers such as the various food cans of preparation, beverages can.
For achieving the above object, the technical solution used in the present invention is: at first with the palladium target tin plate is carried out sputter to form stable palladium film; Secondly the tin plate that has deposited the palladium film is carried out heat treated, to obtain enough hardness and excellent germ resistance.
Particularly, its preparation process follows these steps to carry out:
(1) steel plate of selecting the zinc-plated processing of process is as the tin plate base material, and wherein the thickness of tin film is about 4-6 μ m.Preferably in containing phosphate anion and tetravalent tin ion solution, carry out the steel plate that catholyte is handled, because promptly have stability preferably through the steel plate of above-mentioned zinc-plated processing itself.
(2) will handle the tin plate base material that obtains through step (1) and place the sputter process chamber, carry out rf magnetron sputtering with the palladium target, wherein sputtering parameter is straight argon, the RF power 100W of palladium target diameter 0.1m, sputtering atmosphere 0.3Pa, obtain about 0.6-0.8 μ m plated film, preferred coating film thickness is 0.7 μ m.The selection of above-mentioned sputtering parameter is the verified palladium film that can be optimized.And the selection of palladium film thickness is because palladium film too thin (less than 0.6 μ m) is difficult to obtain enough stability and protectiveness, and palladium film too thick (greater than 0.8 μ m) is then because the expensive price of palladium increases the unnecessary cost of product.
(3) will handle the tin plate obtain through step (2) and place retort furnace, and under 250-400 ℃ temperature, preferred 300 ℃, carry out heat treated, the treatment time is 50-70min, preferred 60min.The selection of heat treated temperature is because temperature too low (less than 250 ℃) can't obtain enough germ resistancies, and temperature too high (greater than 400 ℃) can cause processing for a long time to cause the decline of surface of steel plate hardness and can't satisfy user demand; The selection of heat treated time is because the time lacks very much (less than 50 minutes) and can't obtain enough and stable germ resistance, and the time oversize (greater than 70 minutes) can't significantly increase germ resistance and increases production cost on the contrary, reduces production efficiency, handles the treatment effect that 60min will obtain the over-all properties optimum at 300 ℃.
Advantage of the present invention is: handle the tin plate that obtains through the present invention; not only has excellent stability; particularly have enough mechanical properties and excellent germ resistance concurrently; but also need not use the chromic treatment solution that contains that is subjected to strict restriction from environment protection, can be widely used in containers such as food cans, beverages cans is the various fields at center.
Description of drawings
Fig. 1 is the Vickers' hardness of the tin plate after surface treatment under the different treatment temperature and the relation curve in treatment time.
Embodiment
Fig. 1 is the Vickers' hardness of the tin plate after surface treatment under the different treatment temperature and the relation curve in treatment time.
Below, the present invention is described in detail by specific embodiment 1-3.
Embodiment 1.
Employing is through containing H
3PO
4And Sn
4The tin plate of 50 * 50mm that the electrolysis of solutions of Cl is handled is as the tin plate base material, wherein the about 5 μ m of tin thickness; At first, the tin plate base material is placed the sputter process chamber, carry out rf magnetron sputtering with the palladium target, wherein sputtering parameter is straight argon, the RF power 100W of target palladium diameter 0.1m, sputtering atmosphere 0.3Pa, obtains about 0.7 μ m plated film; Tin plate with palladium plated film places retort furnace then, carries out heat treated under 250 ℃ temperature, and the treatment time is respectively 10min, 30min, 60min, obtains the steel part after the present invention handles; Steel part after handling is carried out stability test, and test result shows with the steel part that does not carry out heat treated to be compared; Steel part after handling is carried out hardness test with Vickers hardness tester, and test result is seen accompanying drawing 1; Steel part after the 60min processing is carried out the germ resistance test, and test result shows with the steel part that does not carry out heat treated to be compared, and its colony number is reduced to about 0.08 (being the test result of the test result of processing element divided by the parts that are untreated).
Embodiment 2.
Employing is through containing H
3PO
4And Sn
4The tin plate of 50 * 50mm that the electrolysis of solutions of Cl is handled is as the tin plate base material, wherein the about 5 μ m of tin thickness; At first, the tin plate base material is placed the sputter process chamber, carry out rf magnetron sputtering with the palladium target, wherein sputtering parameter is straight argon, the RF power 100W of target palladium diameter 0.1m, sputtering atmosphere 0.3Pa, obtains about 0.7 μ m plated film; Tin plate with palladium plated film places retort furnace then, carries out heat treated under 300 ℃ temperature, and the treatment time is respectively 10min, 30min, 60min, obtains the steel part after the present invention handles; Steel part after handling is carried out stability test, and test result shows with the steel part that does not carry out heat treated to be compared; Steel part after handling is carried out hardness test with Vickers hardness tester, and test result is seen accompanying drawing 1; Steel part after the 60min processing is carried out the germ resistance test, and test result shows with the steel part that does not carry out heat treated to be compared, and its colony number is reduced to about 0.01 (being the test result of the test result of processing element divided by the parts that are untreated).
Embodiment 3.
Employing is through containing H
3PO
4And Sn
4The tin plate of 50 * 50mm that the electrolysis of solutions of Cl is handled is as the tin plate base material, wherein the about 5 μ m of tin thickness; At first, the tin plate base material is placed the sputter process chamber, carry out rf magnetron sputtering with the palladium target, wherein sputtering parameter is straight argon, the RF power 100W of target palladium diameter 0.1m, sputtering atmosphere 0.3Pa, obtains about 0.7 μ m plated film; Tin plate with palladium plated film places retort furnace then, carries out heat treated under 400 ℃ temperature, and the treatment time is respectively 10min, 30min, 60min, obtains the steel part after the present invention handles; Steel part after handling is carried out stability test, and test result shows with the steel part that does not carry out heat treated to be compared; Steel part after handling is carried out hardness test with Vickers hardness tester, and test result is seen accompanying drawing 1; Steel part after the 60min processing is carried out the germ resistance test, and test result shows with the steel part that does not carry out heat treated to be compared, and its colony number is reduced to and is almost 0 (being the test result of the test result of processing element divided by the parts that are untreated).
Claims (7)
1. the surface treatment method of a tin plate, it may further comprise the steps: (1) selects the steel plate of the zinc-plated processing of process as the tin plate base material, wherein said tin plate carries out the catholyte processing with steel plate and obtains in containing phosphate anion and tetravalent tin ion solution, the thickness of tin film is 4-6 μ m; (2) will handle the tin plate base material that obtains through step (1) and place the sputter process chamber, and carry out rf magnetron sputtering with the palladium target, and obtain the palladium film, the palladium film thickness that wherein said magnetron sputtering forms is 0.6-0.8 μ m; (3) will handle the tin plate that obtains through step (2) and place retort furnace, and carry out heat treated under 250-400 ℃ temperature, the treatment time is 50-70min.
2. the surface treatment method of a kind of tin plate according to claim 1, the parameter of wherein said magnetron sputtering is as follows: the straight argon of target palladium diameter 0.1m, sputtering atmosphere 0.3Pa, RF power 100W.
3. the surface treatment method of a kind of tin plate according to claim 1, the palladium film thickness that wherein said magnetron sputtering forms is 0.7 μ m.
4. the surface treatment method of a kind of tin plate according to claim 1, wherein the temperature of heat treated is 300 ℃.
5. the surface treatment method of a kind of tin plate according to claim 1, wherein the time of heat treated is 60min.
6. steel part that the surface treatment method that utilizes the arbitrary described tin plate of claim 1-5 prepares.
7. steel part according to claim 6, wherein this steel part is used to prepare food cans or beverages can.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010505833A CN102011124B (en) | 2010-10-14 | 2010-10-14 | Surface treatment method of tin-plated steel plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010505833A CN102011124B (en) | 2010-10-14 | 2010-10-14 | Surface treatment method of tin-plated steel plate |
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| CN102011124A CN102011124A (en) | 2011-04-13 |
| CN102011124B true CN102011124B (en) | 2011-12-14 |
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| CN201010505833A Expired - Fee Related CN102011124B (en) | 2010-10-14 | 2010-10-14 | Surface treatment method of tin-plated steel plate |
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| CN111945112A (en) * | 2019-05-14 | 2020-11-17 | 宝山钢铁股份有限公司 | Method for manufacturing vacuum tin plate |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5268832A (en) * | 1975-12-05 | 1977-06-08 | Nippon Steel Corp | Surface treatment of tin plated steel sheet |
| JPS6169982A (en) * | 1984-09-14 | 1986-04-10 | Nippon Kokan Kk <Nkk> | Lead-plated layer |
| JP4504059B2 (en) * | 2004-03-26 | 2010-07-14 | シチズンホールディングス株式会社 | Decorative product with golden coating |
| TWI322194B (en) * | 2005-10-20 | 2010-03-21 | Jfe Steel Corp | Tin plated steel sheet and method for production thereof |
| KR101018951B1 (en) * | 2006-02-09 | 2011-03-02 | 신닛뽄세이테쯔 카부시키카이샤 | Tinned steel sheet excellent in corrosion resistance |
| CN101457357A (en) * | 2007-12-14 | 2009-06-17 | 比亚迪股份有限公司 | Film coating material and preparation method thereof |
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