SU663758A1 - Method of removing ceramics from casts - Google Patents
Method of removing ceramics from castsInfo
- Publication number
- SU663758A1 SU663758A1 SU772475131A SU2475131A SU663758A1 SU 663758 A1 SU663758 A1 SU 663758A1 SU 772475131 A SU772475131 A SU 772475131A SU 2475131 A SU2475131 A SU 2475131A SU 663758 A1 SU663758 A1 SU 663758A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- melt
- ceramics
- cleaning
- casts
- castings
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/28—Cleaning or pickling metallic material with solutions or molten salts with molten salts
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Description
1one
Изобретение относигс к химической очистке поверхности металлов, в частное- ти деталей точного лить от уерамики.The invention relates to the chemical cleaning of the surface of metals, in particular, to parts of exact casting from ceramics.
Известен способ очистки отливок от керамики путем их обработки в расплаве щелочей. Процесс ведут при 450500°С 1.A known method of cleaning castings from ceramics by treating them in an alkali melt. The process is conducted at 450500 ° C 1.
Недостатком способа вл етс загр знение расплава в процессе обработки отливок силикатами щелочных металлов, привод щее к снижению активности гидроксиль-, ных анионов и повышению в зкости расплава , что в свою очередь приводит к увеличению длительности обработки отливок и увеличению уноса расплава с отливками.The disadvantage of this method is the contamination of the melt during the processing of castings with alkali metal silicates, leading to a decrease in the activity of hydroxyl anions and an increase in the melt viscosity, which in turn leads to an increase in the processing time of the castings and an increase in the melt entrainment with castings.
Цель изобретени - сокращение удель ного расхода шелочей и стабилизаци скорости процесса.The purpose of the invention is to reduce the specific consumption of flakes and stabilize the speed of the process.
Это Достигаетс тем чтО процесс обработки провод т при 500 56СРс и периодическом введении в расплав 1-2 вес.% хлористого бари .This is achieved by the fact that the treatment process is carried out at 500 ° C of 56 ° C and a periodic introduction into the melt of 1-2% by weight barium chloride.
При этом первоначально хлористый барий ввод т в расплав щелочей после раст- ворени В нем керамики 8--12 вес.%, а затем каждый раз после растворени 3 вес.%.In this case, initially barium chloride is introduced into the alkali melt after the dissolution of ceramics in it 8–12 wt.%, And then after dissolving 3 wt.%.
Очистка отл1даок по предлагаемому способу позволит сократить расход щелочей на ЗО-40% за счет понижени концентрации щелочных силикатов, благодар чему уменьшаетс в зкость расплава и вазрас тает содержание гидроокиси натри и гидроокиси кали в жидкой фазе, а также за счет уменьшени уноса расплава с отливками .Cleaning the process according to the proposed method will reduce the consumption of alkalis by 30% by decreasing the concentration of alkaline silicates, thereby reducing the viscosity of the melt and increasing the sodium hydroxide and potassium hydroxide content in the liquid phase, as well as reducing the entrainment of the melt from the castings.
Результатыочистки огливок от керамики приведены в табл, 1 и 2.The results of cleaning ceramics foundings are given in Table 1 and 2.
iNiN
« «""
a ч ю a 76 Очистку провод т в эвтектической сме си МлОН (42 весЛ) и КОИ (58вес,%) при . В каждом опыте обрабатывались идвн гнчные образцы в количестве 5 шт. В процессе очистки ОГЛИБКИ были пол- ностью очищены от керамики. Форм у л а изобретени 1. Способ очисгки отливок ог керами- ки путем их обработки в расплаве щело- чей, отличающийс гем, что, с целью сокращени удельного расхода шелочей и стабилизации скорости процесса, 758 процесс обработки провод т при 500 560 С и периодическом введении в расплав 1-2 вес,% хлористогч) бари . 2, Способ по п. 1, отличающийс тем, что первончально хлористый барий ввод т в расплав шелочей после растворени в нем керамики 8-12вес.% и затем каждый раз после растворени 3-6 вес.%. Источники информации, прин тые во внимание при экспертизе 1. Куруклис Г Л. и Верещагина М. Г. Электролитическа очистка стальных и чугунных деталей в расплавленных щелочах, М,, Машгиз, 1963, с. 84,a h a a 76 The purification was carried out in a eutectic mixture of MlON (42 weight) and KOI (58 weight,%) at. In each experiment, 5 samples of soot samples were processed. During the cleaning process, FIBERS were completely cleaned of ceramics. Formula of the invention 1. The method of cleaning ceramics by casting them in an alkali melt, characterized by hem, which, in order to reduce the specific consumption of flakes and stabilize the process speed, 758 the process is carried out at 500 560 ° C and periodically the introduction of the melt 1-2 weight% chloridog) bari. 2, the method according to claim 1, characterized in that the initial barium chloride is introduced into the melt of the silk after dissolving 8-12 wt.% Ceramics in it and then after dissolving 3-6 wt.%. Sources of information taken into account during the examination 1. Kuruklis G. L. and Vereshchagina M. G. Electrolytic cleaning of steel and cast-iron parts in molten alkalis, M, Mashgiz, 1963, p. 84,
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU772475131A SU663758A1 (en) | 1977-04-04 | 1977-04-04 | Method of removing ceramics from casts |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU772475131A SU663758A1 (en) | 1977-04-04 | 1977-04-04 | Method of removing ceramics from casts |
Publications (1)
Publication Number | Publication Date |
---|---|
SU663758A1 true SU663758A1 (en) | 1979-05-28 |
Family
ID=20704579
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU772475131A SU663758A1 (en) | 1977-04-04 | 1977-04-04 | Method of removing ceramics from casts |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU663758A1 (en) |
-
1977
- 1977-04-04 SU SU772475131A patent/SU663758A1/en active
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