SU679641A1 - Method of gas-flame sputtering of coatings of hard-melting powders - Google Patents
Method of gas-flame sputtering of coatings of hard-melting powdersInfo
- Publication number
- SU679641A1 SU679641A1 SU742020923A SU2020923A SU679641A1 SU 679641 A1 SU679641 A1 SU 679641A1 SU 742020923 A SU742020923 A SU 742020923A SU 2020923 A SU2020923 A SU 2020923A SU 679641 A1 SU679641 A1 SU 679641A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- coatings
- gas mixture
- gas
- hard
- powders
- 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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
-
- 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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/129—Flame spraying
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Nozzles (AREA)
Description
1one
Изобретение относитс к технике напылени покрытий из тугоплавких порошков.This invention relates to a technique for spray coating of refractory powders.
Известен способ газопламенного напылени покрытий из тугоплавких порошков путем подачи тугоплавкого порошка в зону горени газовой смеси, создаваемую р дами пересекающихс струй с одинаковыми величинами скоростей струй газовой смеси в каждом р ду 1.A known method of flame spraying coatings of refractory powders by feeding a refractory powder into the combustion zone of a gas mixture created by a series of intersecting jets with the same velocity values of the jets of the gas mixture in each row 1.
Недостатком известного способа вл етс слаба турбулизаци газа в начальной части пламени, что в свою очередь снижает эффективность напылени тугоплавких порошков.A disadvantage of the known method is weak gas turbulization in the initial part of the flame, which, in turn, reduces the effectiveness of the deposition of refractory powders.
Целью изобретени вл етс повышение эффективности напылени покрытий из тугоплавких порошков.The aim of the invention is to increase the effectiveness of the deposition of coatings of refractory powders.
Цель достигаетс путем повышени степени турбулентности газа в области горени газовой смеси .The goal is achieved by increasing the degree of gas turbulence in the area of combustion of the gas mixture.
В р дах пересекающихс струй газовой смеси обеспечивают чередование В12ЛИЧИН скоростей смежных струй в каждом р ду, причем соотношение скоростей газовой смеси в смежных стру х каждого р да равно или более 1,25In the series of intersecting jets of the gas mixture, V12LICHEIN alternates the speeds of adjacent jets in each row, and the ratio of the velocities of the gas mixture in adjacent jets of each row is equal to or more than 1.25
На чертеже представлена схема горелки , ил.71юстрирующа применениеThe drawing shows a burner diagram illustrating the application.
предлагаемого способа газопламенного напылени покрытий из тугоплавких порошков.The proposed method of flame spraying coatings of refractory powders.
Горелка состоит из корпуса 1 с распределительными камерами 2, трубками 3 подвода газовой смеси и центральным каналом 4 дл подачи порошкообразного материала. Распределительные камеры 2 сообщаютс с атмос0 ферой р дом сопел 5, имеющих различную в смежных соплах и чередующуюс в каждом р ду величину ги.цравлического сопротивлени .The burner consists of a housing 1 with distribution chambers 2, tubes 3 for supplying a gas mixture and a central channel 4 for supplying powdered material. Distributive chambers 2 are connected to the atmosphere by a series of nozzles 5, having a different value of hy in. In each row in each series of hy. Of hydraulic resistance.
Подача напыл емого материала в го5 релку осуществл етс во взвешенном состо нии транспортирующим газом (азотом) через канал.4. Газова смесь по трубкам 3 подаетс в распределительные камеры 2, из которых The sprayed material is fed to the head in the suspension state by the transporting gas (nitrogen) through the duct. The gas mixture through the tubes 3 is fed into the distribution chambers 2, of which
0 через сопла 5 в виде струй 6 направл етс в зону начального участка горени . Из-за различного гидравлического сопротивлени сопел скорость газового потока на выходе из них не 0 through nozzles 5 in the form of jets 6 is directed to the zone of the initial part of the combustion. Due to the different hydraulic resistance of the nozzles, the gas flow rate at the outlet of them is not
5 один акова и находитс в соотношении ,25.Va, при Vt V5 т.д. и Va 4i VgH т.д. V, гдеVn скорость струи на выходе из сопла;5 one is and is in the ratio, 25.Va, with Vt V5 etc. and Va 4i VgH etc. V, where Vn is the jet velocity at the nozzle exit;
00
и - пор дковый номер сопла.and is the serial number of the nozzle.
Различие величин скоростей отдельных струй в общем газовом потоке вызывает интенсивное перемешивание микрообъемов газовой смеси, увеличивает врем пребывани частиц тугоплавкого порошка в зоне горени , чем и обеспечиваетс повышение .: эффективности напылени покрытий.The difference in the speeds of the individual jets in the common gas flow causes intensive mixing of the microvolumes of the gas mixture, increases the residence time of the refractory powder particles in the combustion zone, and this provides an increase in the spray coating efficiency.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU742020923A SU679641A1 (en) | 1974-04-25 | 1974-04-25 | Method of gas-flame sputtering of coatings of hard-melting powders |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU742020923A SU679641A1 (en) | 1974-04-25 | 1974-04-25 | Method of gas-flame sputtering of coatings of hard-melting powders |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU679641A1 true SU679641A1 (en) | 1979-08-15 |
Family
ID=20583515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU742020923A SU679641A1 (en) | 1974-04-25 | 1974-04-25 | Method of gas-flame sputtering of coatings of hard-melting powders |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU679641A1 (en) |
-
1974
- 1974-04-25 SU SU742020923A patent/SU679641A1/en active
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