SU639461A3 - Electrolyte for cathode chromating - Google Patents
Electrolyte for cathode chromatingInfo
- Publication number
- SU639461A3 SU639461A3 SU742026747A SU2026747A SU639461A3 SU 639461 A3 SU639461 A3 SU 639461A3 SU 742026747 A SU742026747 A SU 742026747A SU 2026747 A SU2026747 A SU 2026747A SU 639461 A3 SU639461 A3 SU 639461A3
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- electrolyte
- chromating
- cathode
- tin
- chromate
- Prior art date
Links
- 239000003792 electrolyte Substances 0.000 title description 15
- 238000004532 chromating Methods 0.000 title description 5
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 7
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 7
- SOCTUWSJJQCPFX-UHFFFAOYSA-N dichromate(2-) Chemical compound [O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O SOCTUWSJJQCPFX-UHFFFAOYSA-N 0.000 description 5
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 4
- 229910052783 alkali metal Inorganic materials 0.000 description 4
- -1 alkali metal acetate Chemical class 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000001632 sodium acetate Substances 0.000 description 2
- 235000017281 sodium acetate Nutrition 0.000 description 2
- 239000005028 tinplate Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- JHWIEAWILPSRMU-UHFFFAOYSA-N 2-methyl-3-pyrimidin-4-ylpropanoic acid Chemical compound OC(=O)C(C)CC1=CC=NC=N1 JHWIEAWILPSRMU-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 235000021245 dietary protein Nutrition 0.000 description 1
- GWKIZYRKUYSSPX-UHFFFAOYSA-N dihydrido(dioxo)chromium Chemical compound [CrH2](=O)=O GWKIZYRKUYSSPX-UHFFFAOYSA-N 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/48—After-treatment of electroplated surfaces
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/38—Chromatising
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating Methods And Accessories (AREA)
- Electrolytic Production Of Metals (AREA)
- Cartons (AREA)
- Making Paper Articles (AREA)
- Chemical Treatment Of Metals (AREA)
Description
Изобретение .касаетс хроматировани белой жести, .используемой рл изготовлении тары дл пищевых п-родуктов, в .ности к растворам дл катодного хроматировани .The invention relates to the chromatization of white tin, used in the manufacture of containers for food products, in particular to solutions for cathode chromating.
Известен электролит дл катодного хромахировани , представл ющий собой разбавленный раствор бихромата натри 1.A known electrolyte for cathodic chromating is a dilute solution of sodium dichromate 1.
Известен также электролит дл катодного хроматировани , содержащий хромовый аигидрид в сочетании с фосфорной кислотой и -сол ми цинка, магни или кальци 2.An electrolyte for cathode chromating containing chromic hydride in combination with phosphoric acid and zinc, magnesium, or calcium salts 2 is also known.
Недостатком таких электролитов вл етс то, что полученные хроматные пленки не устран ют перехода олова в раствор при взаимодействии хроматированной поверхности с пищевыми продуктами.The disadvantage of such electrolytes is that the obtained chromate films do not eliminate the transition of tin into solution when the chromed surface interacts with food.
Наиболее близким решением к предлагаемому вл етс электролит дл катодного хроматировани белой жести, содержащий бихромат и ацетат натри .The closest solution to the present invention is an electrolyte for the cathode chromatization of tinplate containing dichromate and sodium acetate.
Однако этот электролит, хот и уменьшает количество олова, переход щего в раствор , но не обеспечивает высокой скорости образовани хроматных пленок.However, this electrolyte, although it reduces the amount of tin that goes into solution, but does not provide a high rate of formation of chromate films.
Предлагаемый электро.тит позвол ет повысить скорость осаждени за счет того, что электролит «ар ду с бихроматом и ацетатол щелочного металла дополнительно -содержит хро,мовый ангидрид при Следующем соотношении Компонентов, г/л:The proposed electro.tit allows to increase the deposition rate due to the fact that the electrolyte "ar d with dichromate and alkali metal acetate" additionally contains chromic, boiling anhydride at the following ratio of components, g / l:
Бихромат щел-очного .металла 20-25 Ацетат щелочного металла 5-10 Хр0;мовый ангидрид4,5-5,5Bichromate of single-microscopic metal 20-25 Alkali metal acetate 5-10 Chr0; bulk anhydride4.5-5.5
Предлагаемый состав электролита имеет электролроводность около 30000 см при 50° С. Процесс хроматировани осуществл ют при температуре 30-60° С, пред почтительно 40-50° С, и катодной плотноеТ .И тока 5,5-9,5 А/дм при пропускании от 8 до 14 Кул/м в течение 1-2 сек.The proposed electrolyte composition has an electrical conductivity of about 30,000 cm at 50 ° C. The chromating process is carried out at a temperature of 30-60 ° C, preferably 40-50 ° C, and cathode dense T. And a current of 5.5-9.5 A / dm at transmission from 8 to 14 Kul / m for 1-2 seconds.
Электролит готов т растворением в воде всех его .ком-понентов.The electrolyte is prepared by dissolving all its .components in water.
Примеры получени хроматных пленок на белой жести из -предлагаемого электролита иллюслрирует таблица. Электролит готов т растворением бихромата и ацетата натри и хромового ангидрида в дистиллированной или обессолеиной воде. Процесс ведут в течение 1 сек. Дл Сравиени ириведены данные по количеству хроматной иленки, осаждаемой из известного состава электролита. Во всех случа х сила тока составл ет 4/-1. Как видно из таблицы, скорость образовани хроматной иленки в предлагаемом электролите значительно выше, при этом возможно наращивание толстых слоев. Бела жесть с хроматным покрытием, полученным из предлагаемого состава электролита , обладает высокой коррозионной стойкостью, термостойкостью, устойчлвостью к ио влению цветов :ПО:бежало-сти, и количество олова, перешедшего в растеор за цолгада испытаний в пищевых белковых средах, ие превышает 60 мг1кг олова.Examples of obtaining chromate films on a white tin from the proposed electrolyte are illustrated in the table. The electrolyte is prepared by dissolving dichromate and sodium acetate and chromic anhydride in distilled or desaline water. The process is carried out for 1 sec. For Sraveni, data on the amount of chromate oxide deposited from a known electrolyte composition are shown. In all cases, the current strength is 4 / -1. As can be seen from the table, the rate of formation of the chromate oxide in the proposed electrolyte is much higher, and it is possible to build up thick layers. Bela tin with a chromate coating obtained from the proposed electrolyte composition has a high corrosion resistance, heat resistance, resistance to the appearance of colors: software: fugitive, and the amount of tin that has passed into the solution for testing in food protein media does not exceed 60 mg1kg tin.
Количествоamount
хроматнойchromate
пленки,films,
мг/лmg / l
22,422.4
24,224.2
23,823.8
24,324.3
1414
14,614.6
15,015.0
14,814.8
16,016,0
15,515.5
14,014.0
13,6 Формула .изобретени Электролит дл катодного Х роматировани белой жести, содержащий .бихромат и ацетат щелочного металла, отличающийс тем, что, с -целью повышени скорости осаждени , он даиолнительно содержит хромовый ангидрид при следующем соотношении компонентов, г/л: Бихромат щелочного металла 20-25 Ацетат щелоч-ного металла 5-,10 Храмовый ангидрид4,5-5,5 Исто чники информации, прин тые ,во впи-мание при экспертизе: 1.Патент США № 3749651, кл. 204-56, онубл. 1973. 2.Патент ФРГ № 1228119, кл. 48 а 11/00, опубл. 1966. 3.Патент США № 3647650, кл. 204-35, опубл. 1972.13.6 Formula of the invention Electrolyte for cathodic X romatization of tinplate containing alkali metal bichromate and acetate, characterized in that, in order to increase the deposition rate, it additionally contains chromic anhydride in the following ratio of components, g / l: Alkali dichromate metal 20-25 Alkali metal acetate 5-, 10 Temple anhydride4,5-5,5 Information sources accepted for review during examination: 1. US patent number 3749651, cl. 204-56, onub. 1973. 2. The patent of the Federal Republic of Germany No. 1228119, cl. 48 a 11/00, publ. 1966. 3. The US patent number 3647650, cl. 204-35, publ. 1972.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19732323336 DE2323336C2 (en) | 1973-05-09 | Electrolyte and process for the cathodic post-treatment of tinplate or strip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU639461A3 true SU639461A3 (en) | 1978-12-25 |
Family
ID=5880385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU742026747A SU639461A3 (en) | 1973-05-09 | 1974-05-08 | Electrolyte for cathode chromating |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3925171A (en) |
| JP (1) | JPS5015742A (en) |
| BE (1) | BE813574A (en) |
| FR (1) | FR2228857B1 (en) |
| GB (1) | GB1413940A (en) |
| NL (1) | NL7402029A (en) |
| NO (1) | NO134756C (en) |
| SU (1) | SU639461A3 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2212476C2 (en) * | 2001-12-05 | 2003-09-20 | Федеральное государственное унитарное предприятие Государственный научный центр "Центральный научно-исследовательский институт черной металлургии им. И.П.Бардина" | Method of processing chrome-plated tin |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2465011A1 (en) * | 1979-09-06 | 1981-03-20 | Carnaud Sa | MATERIAL CONSISTING OF A PROTECTED STEEL SHEET, METHOD FOR MANUFACTURING SAME, AND APPLICATIONS THEREOF, IN PARTICULAR TO PRESERVE BOXES |
| JPS6046199B2 (en) * | 1981-06-10 | 1985-10-15 | 川崎製鉄株式会社 | Manufacturing method of surface-treated steel plate for welded cans with high rust resistance |
| JPS5928441A (en) * | 1982-08-09 | 1984-02-15 | Ueno Seiyaku Oyo Kenkyusho:Kk | Coated thiamine preparation for pisciculture and its preparation |
| GB2157319A (en) * | 1984-04-13 | 1985-10-23 | Toyo Kohan Co Ltd | Tin free steel and its production |
| JPS61238336A (en) * | 1985-04-15 | 1986-10-23 | Ajinomoto Co Inc | Preparation of coated material having gradual release property |
| US6045686A (en) * | 1997-03-18 | 2000-04-04 | The University Of Connecticut | Method and apparatus for electrochemical delacquering and detinning |
| DE60132450T2 (en) * | 2001-09-04 | 2008-04-17 | Sony Deutschland Gmbh | Solar cell and manufacturing method |
| US20120100425A1 (en) * | 2004-01-16 | 2012-04-26 | Stauffer John E | Lead alkaline battery |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2437620A (en) * | 1943-08-31 | 1948-03-09 | Aluminum Co Of America | Method of coating masses of small copper-bearing aluminum articles |
| US2746915A (en) * | 1951-10-15 | 1956-05-22 | Autoyre Co Inc | Electrolytic metal treatment and article |
| US3278401A (en) * | 1966-01-12 | 1966-10-11 | Nat Steel Corp | Method of treating tin-containing surfaces |
| GB1220111A (en) * | 1968-04-19 | 1971-01-20 | Nippon Kokan Kk | A method of treating tin plate or galvanized sheet |
-
1974
- 1974-02-07 FR FR7404112A patent/FR2228857B1/fr not_active Expired
- 1974-02-14 NL NL7402029A patent/NL7402029A/xx unknown
- 1974-04-11 BE BE143073A patent/BE813574A/en unknown
- 1974-04-23 GB GB1764174A patent/GB1413940A/en not_active Expired
- 1974-05-02 US US466247A patent/US3925171A/en not_active Expired - Lifetime
- 1974-05-06 NO NO741620A patent/NO134756C/no unknown
- 1974-05-08 SU SU742026747A patent/SU639461A3/en active
- 1974-05-08 JP JP49051098A patent/JPS5015742A/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2212476C2 (en) * | 2001-12-05 | 2003-09-20 | Федеральное государственное унитарное предприятие Государственный научный центр "Центральный научно-исследовательский институт черной металлургии им. И.П.Бардина" | Method of processing chrome-plated tin |
Also Published As
| Publication number | Publication date |
|---|---|
| NO134756C (en) | 1976-12-08 |
| US3925171A (en) | 1975-12-09 |
| NL7402029A (en) | 1974-11-12 |
| JPS5015742A (en) | 1975-02-19 |
| DE2323336A1 (en) | 1974-08-29 |
| DE2323336B1 (en) | 1974-08-29 |
| BE813574A (en) | 1974-10-11 |
| FR2228857A1 (en) | 1974-12-06 |
| GB1413940A (en) | 1975-11-12 |
| NO134756B (en) | 1976-08-30 |
| FR2228857B1 (en) | 1976-06-25 |
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