SU1661252A1 - Method of removing nickel coat - Google Patents
Method of removing nickel coat Download PDFInfo
- Publication number
- SU1661252A1 SU1661252A1 SU884625520A SU4625520A SU1661252A1 SU 1661252 A1 SU1661252 A1 SU 1661252A1 SU 884625520 A SU884625520 A SU 884625520A SU 4625520 A SU4625520 A SU 4625520A SU 1661252 A1 SU1661252 A1 SU 1661252A1
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- SU
- USSR - Soviet Union
- Prior art keywords
- sugar acid
- water
- sulfuric acid
- products
- acid
- Prior art date
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- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- ing And Chemical Polishing (AREA)
Abstract
Изобретение относитс к удалению покрытий электрохимическим способом, в частности никелевых алмазосодержащих со стальных изделий. Целью изобретени вл етс интенсификаци процесса и снижение растравливани стали. Способ включает анодную обработку изделий при плотности тока 25 - 45 А/дм2 в электролите, содержащем, мас.%: серна кислота 60 - 70The invention relates to the removal of coatings by an electrochemical method, in particular nickel-containing diamond-containing steel products. The aim of the invention is to intensify the process and reduce steel etching. The method includes anodic treatment of products at a current density of 25-45 A / dm 2 in an electrolyte containing, in wt.%: Sulfuric acid 60-70
сахарна кислота 0,5 - 1sugar acid 0.5 - 1
вода остальное. 1 табл.water the rest. 1 tab.
Description
Изобретение относитс к удалению металлических покрытий электролитическим методом и совершенствует процесс сн ти со стальных изделий никелевого покрыти , примущественно, с включени ми алмазов.The invention relates to the removal of metallic coatings by an electrolytic method and improves the stripping process from steel products of a nickel coating, mainly with inclusions of diamonds.
Цель изобретени - интенсификаци процесса и снижение растравливани стали.The purpose of the invention is to intensify the process and reduce steel etching.
Пример, Состав готов т обычным смешением компонентов, сахарную кислоту ввод т в виде водного раствора.Example, The composition is prepared by the usual mixing of the components, the sugar acid is introduced in the form of an aqueous solution.
Диапазон концентрации сахарной кислоты обусловлен скоростью растворени никел и чистотой обработанной поверхности . При меньшем содержании сахарной кислоты снижаютс допустимые плотности тока, увеличиваетс продолжительность обработки , усиливаетс растворение стали. Увеличение содержани сахарной кислоты более 1 мас.% не способствует дальнейшему росту положительного эффекта.The range of concentration of the sugar acid is due to the dissolution rate of nickel and the purity of the treated surface. With a lower content of sugar acid, the permissible current densities decrease, the duration of treatment increases, the dissolution of steel increases. An increase in the sugar acid content of more than 1 wt.% Does not contribute to a further increase in the positive effect.
Процесс провод т при анодной плотности тока 25-45 А/дм2, температуре 25°С, длительности 25-40 мин. The process is carried out at an anode current density of 25-45 A / dm2, a temperature of 25 ° C, and a duration of 25-40 minutes.
Примеры выполнени и характеристика предлагаемого способа в сравнении с известным приведены в таблице. Стальна заготовка , на которой формируетс алмазоносное покрытие на никелевой св зке толщиной 0,085 мм имеет 8 класс чистоты обработки (На 0,45-0,6 мкм).Examples of performance and characteristics of the proposed method in comparison with the known are given in the table. The steel billet on which the diamondiferous coating is formed on a nickel bond with a thickness of 0.085 mm has an 8th processing grade (At 0.45-0.6 µm).
Предложенный способ позвол ет интенсифицировать растворение никел в 2-4 раза, снизить шероховатость обработанной поверхности на 1-2 класса.The proposed method allows to intensify nickel dissolution by 2-4 times, to reduce the roughness of the treated surface by 1-2 classes.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU884625520A SU1661252A1 (en) | 1988-12-26 | 1988-12-26 | Method of removing nickel coat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU884625520A SU1661252A1 (en) | 1988-12-26 | 1988-12-26 | Method of removing nickel coat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1661252A1 true SU1661252A1 (en) | 1991-07-07 |
Family
ID=21417483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU884625520A SU1661252A1 (en) | 1988-12-26 | 1988-12-26 | Method of removing nickel coat |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1661252A1 (en) |
-
1988
- 1988-12-26 SU SU884625520A patent/SU1661252A1/en active
Non-Patent Citations (1)
| Title |
|---|
| Грилихес С.Я. Обезжиривание, травление и полирование металлов. Л.: Машиностроение, 1983, с. 25. Справочное руководство по гальванотехнике. Под ред. В.И.Лайнера. М.: Металлурги , 1972, ч.З, с. 142-144, состав А. * |
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