SU670607A1 - Solution for electric polishing of metals - Google Patents
Solution for electric polishing of metalsInfo
- Publication number
- SU670607A1 SU670607A1 SU762333781A SU2333781A SU670607A1 SU 670607 A1 SU670607 A1 SU 670607A1 SU 762333781 A SU762333781 A SU 762333781A SU 2333781 A SU2333781 A SU 2333781A SU 670607 A1 SU670607 A1 SU 670607A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- metals
- solution
- electric polishing
- polishing
- electrochemical polishing
- Prior art date
Links
Landscapes
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Description
Процесс электрополировани осуществл ют без предварительной проработки раствора при температуре 20-30°С в интервале плотностей тока 0,5-3,0 А/см. Совместное присутствие в растворе карбоксиметилцеллюлозы , образующей в прианодном слое в зкую пленку, и бутилнафталинсульфокислого натри (смачивател НБ), повыщающего смачиваемость поверхности металла электролитом, обеспечивает равномерный съем металла и эффективное сглаживание микрорельефа. При полировании молибдено-рениевых сплавов чистота поверхности повышаетс на 2-3 класса по сравнению с исходной. Снижение или повыщение концентрации серной кислоты в растворе сверх указанных пределов приводит к по влению питтинга, а повышение концентрации фосфорной кислоты более 30% приводит к по влению на поверхности радужных пленок. Увеличение концентрации поверхностно-активных веществ в растворе более 0,2% нецелесообразно , так как не приводит к улучшению качества обработки поверхности. Изобретение может быть проиллюстрировано несколькими примерами, представленными в табл. 1. Таблица 1 Сравнительные экспериментальные данные по повышению равномерности съема металла и шероховатости поверхности молибдено-рениевых сплавов марок МКР20 и МР47ВП с исходной чистотой поверхности V8 в предложенном (№№ 1-3) и известiiOM (№ 4) растворах представлены в табл. 2. Таблица 2The electropolishing process is carried out without preliminary treatment of the solution at a temperature of 20-30 ° C in the range of current densities of 0.5-3.0 A / cm. The combined presence of carboxymethylcellulose, which forms a viscous film in the primer layer, and sodium butylnaphthalene sulfate (wetter NB), which increases the wettability of the metal surface with electrolyte, ensures a uniform metal removal and effective smoothing of the microrelief. When polishing molybdenum-rhenium alloys, the surface finish is increased by 2-3 classes compared to the original. A decrease or increase in the concentration of sulfuric acid in the solution above the specified limits leads to the appearance of pitting, and an increase in the concentration of phosphoric acid of more than 30% leads to the appearance of rainbow films on the surface. The increase in the concentration of surfactants in the solution of more than 0.2% is impractical because it does not lead to an improvement in the quality of surface treatment. The invention can be illustrated by several examples presented in table. 1. Table 1 Comparative experimental data on improving the metal removal rate and surface roughness of molybdenum-rhenium alloys of the marks MKP20 and MR47VP with the initial V8 surface purity in the proposed (No. 1-3) and knownOM (No. 4) solutions are presented in Table. 2. Table 2
Процесс электрополировани во всех примерах ведут при плотности тока 0,5 А/см2.The electropolishing process in all examples is carried out at a current density of 0.5 A / cm2.
Использование предложенного раствора дает возможность проводить электрополироваиие лент и деталей из молибдено-рениТаблица 3The use of the proposed solution makes it possible to conduct electropolishing of molybdenum-rhenium ribbons and parts. Table 3
евых сплавов до получени необходимых 50 размеров и позвол ет получать чистоту поверхности V10-11 без следов питтинга. Как видно из данных табл. 2, в предложенном электролите достигаетс более равномерный съем металла и более высока степень чистоты поверхности. При этом величина съема металла и снимаемого припуска находитс в линейной зависимости от плотности тока и времени обработки, как это указано в табл. 3 дл оптимального состава.These alloys have the required 50 dimensions and allow to obtain a V10-11 surface finish with no pitting marks. As can be seen from the data table. 2, in the proposed electrolyte, a more uniform metal removal and a higher degree of surface cleanliness are achieved. In this case, the amount of metal removal and removal allowance is in a linear relationship with current density and processing time, as indicated in Table. 3 for optimal composition.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU762333781A SU670607A1 (en) | 1976-01-29 | 1976-01-29 | Solution for electric polishing of metals |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU762333781A SU670607A1 (en) | 1976-01-29 | 1976-01-29 | Solution for electric polishing of metals |
Publications (1)
Publication Number | Publication Date |
---|---|
SU670607A1 true SU670607A1 (en) | 1979-06-30 |
Family
ID=20652038
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU762333781A SU670607A1 (en) | 1976-01-29 | 1976-01-29 | Solution for electric polishing of metals |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU670607A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1014727C2 (en) * | 2000-03-23 | 2001-09-25 | Univ Eindhoven Tech | A method for electrolytically polishing a metal in the presence of an electrolyte composition, as well as a molded article obtained by such a method. |
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1976
- 1976-01-29 SU SU762333781A patent/SU670607A1/en active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1014727C2 (en) * | 2000-03-23 | 2001-09-25 | Univ Eindhoven Tech | A method for electrolytically polishing a metal in the presence of an electrolyte composition, as well as a molded article obtained by such a method. |
WO2001071068A1 (en) * | 2000-03-23 | 2001-09-27 | Technische Universiteit Eindhoven | Method for the electrolytic polishing of a metal in the presence of an electrolyte composition, as well as a moulded element obtained by using such a method |
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