SU889738A1 - Fisible gate composition - Google Patents
Fisible gate composition Download PDFInfo
- Publication number
- SU889738A1 SU889738A1 SU802907700A SU2907700A SU889738A1 SU 889738 A1 SU889738 A1 SU 889738A1 SU 802907700 A SU802907700 A SU 802907700A SU 2907700 A SU2907700 A SU 2907700A SU 889738 A1 SU889738 A1 SU 889738A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- fisible
- composition
- fusible
- boric anhydride
- lead oxide
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
- C23C10/34—Embedding in a powder mixture, i.e. pack cementation
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
Description
II
Изобретение относитс к химикотермической обработке металлов в по рошковых насыщающих средах, в част ности к диффузионному насыщению алюмини и его сплавов, и может быть использовано в машиностроительной, металлургической, приборостроительной и других dтpacл x промьшленности.The invention relates to the chemical-heat treatment of metals in powder saturating media, in particular, to the diffusion saturation of aluminum and its alloys, and can be used in engineering, metallurgy, instrument-making and other industries x.
Известно использование в качестве плавких затворов различных силикатов с температурой плавлени в интервале 600-900°С и малой скоростью испарени при температуре насыщени (950- 200°С) Со.It is known to use various silicates as fusible closures with a melting point in the range of 600-900 ° C and a low evaporation rate at the saturation temperature (950-200 ° C) of Co.
Однако эти плавкие затворы не обеспечивают герметичность тиглей при температурах химико-термической обработки алюминиевых сплавов (400500°С ).However, these fusible closures do not ensure the tightness of crucibles at temperatures of chemical-thermal treatment of aluminum alloys (400500 ° С).
Наиболее близок по технической сущности к предлагаемому состав плавкого затвора, состо щий из борного ангидрида (В Ол), имеющего температуру расплавлени 600 С Г21.The closest in technical essence to the proposed composition of a fusible valve consisting of boric anhydride (V O), having a melting point of 600 ° C G21.
Однако использование борного анVидpидa в качестве плавкого затвора обеспечивает необходимую герметизацию тигл при и выще, что не позвол ет использовать его дл химико-термической обработки алюминиевых сплавов (400-500°С).However, the use of boron anvidryd as a fusible closure provides the necessary sealing of the crucible at and above, which does not allow its use for the chemical-thermal treatment of aluminum alloys (400-500 ° C).
Цель изобретени - улучщение герметичности тигл при химико-термической обработке алюминиевых сплавов.The purpose of the invention is to improve the tightness of the crucible during the chemical-thermal treatment of aluminum alloys.
Указанна цель достигаетс тем, .что состав плавкого затвора, содержащий борный ангидрид, дополнительно содержит окись свинца (РЬО) при следующем соотношении ингредиентов, мае.%:This goal is achieved by the fact that the composition of the fusible valve, containing boric anhydride, additionally contains lead oxide (PHO) in the following ratio of ingredients,% by weight:
Борный ангидрид 40-60 Окись свинца 40-60Boric anhydride 40-60 lead oxide 40-60
Предлагаемый состав плавкого затвора приготавливают либо путем смешени ингредиентов в необходимыхThe proposed composition of the fusible valve is prepared either by mixing the ingredients in the required
количествах в порошковом состо нии, либо путем предварительного выплавлени .quantities in powder form, or by premelting.
Пример. Провод т процесс цин ковани в смеси, содержащей, %: ZnExample. The process of zinc forging is carried out in a mixture containing,%: Zn
30, Al 20, AljOj 49, 1 с использованием известного и предлагаемого состава плавкого затвора. Сравнительные результаты приведены в таблице .30, Al 20, AljOj 49, 1 using the known and proposed composition of the fusible valve. Comparative results are shown in the table.
ИзвестныйFamous
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU802907700A SU889738A1 (en) | 1980-04-08 | 1980-04-08 | Fisible gate composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU802907700A SU889738A1 (en) | 1980-04-08 | 1980-04-08 | Fisible gate composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU889738A1 true SU889738A1 (en) | 1981-12-15 |
Family
ID=20888699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU802907700A SU889738A1 (en) | 1980-04-08 | 1980-04-08 | Fisible gate composition |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU889738A1 (en) |
-
1980
- 1980-04-08 SU SU802907700A patent/SU889738A1/en active
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