CA2270260C - Apparatus for gas-dynamic coating - Google Patents
Apparatus for gas-dynamic coating Download PDFInfo
- Publication number
- CA2270260C CA2270260C CA002270260A CA2270260A CA2270260C CA 2270260 C CA2270260 C CA 2270260C CA 002270260 A CA002270260 A CA 002270260A CA 2270260 A CA2270260 A CA 2270260A CA 2270260 C CA2270260 C CA 2270260C
- Authority
- CA
- Canada
- Prior art keywords
- powder
- supersonic
- nozzle
- supersonic nozzle
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
- B05B7/1404—Arrangements for supplying particulate material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/16—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed
- B05B7/1606—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed the spraying of the material involving the use of an atomising fluid, e.g. air
- B05B7/1613—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed the spraying of the material involving the use of an atomising fluid, e.g. air comprising means for heating the atomising fluid before mixing with the material to be sprayed
- B05B7/162—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed the spraying of the material involving the use of an atomising fluid, e.g. air comprising means for heating the atomising fluid before mixing with the material to be sprayed and heat being transferred from the atomising fluid to the material to be sprayed
- B05B7/1626—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas incorporating means for heating or cooling the material to be sprayed the spraying of the material involving the use of an atomising fluid, e.g. air comprising means for heating the atomising fluid before mixing with the material to be sprayed and heat being transferred from the atomising fluid to the material to be sprayed at the moment of mixing
-
- 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
- C23C24/00—Coating starting from inorganic powder
- C23C24/02—Coating starting from inorganic powder by application of pressure only
- C23C24/04—Impact or kinetic deposition of particles
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Nozzles (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The apparatus is comprised of a compressed air source which is connected by a gas conduit to a heating unit whose outlet is connected to a supersonic nozzle inlet in which a supersonic portion is connected by a conduit to a powder feeder. Compressed air of pressure P0 from the compressed air source by the gas conduit is delivered to the heating unit to be heated to the required temperature. The heated air enters the supersonic nozzle in which it is accelerated to a speed of several hundred meters per second. The powdered material is passed from the powder feeder by the powder feeding conduit to the supersonic nozzle portion in which it is accelerated by the air flow at section of the nozzle from the injection point to the nozzle outlet.
Description
APPARATUS FOR GAS-DYNAMIC COATING
FIELD OF THE INVENTION
The present invention relates to appa~at=~s for gas-dynamic spraying of powder materials, and in particular to apparatus for use in machine building and ether industries for producing coatings imparting different properties ~:c the surfaces being worked.
BACKGROUND OF THE INVENTTON
Protection of structures, equipment, mach.in.ery and mechanisms from corrosion and the effec~t.s r~~f corros:i.ve media, enhancing the characteristics of materials and, in particular, production of materials with specif.i.e~~ properties and development of relevant resour~::r~-sav.~r~g t:echnologie s present scientific and engineer~.n~~ chala..engf>s whi.ch have major practical significance.
These problems are solved by cli:~ ferer~t. r~~~thods, among them methods of gas-dynamic spr~ayir~.c~ c~~ pc,mrc:~er coatings ~~ahich are based on a powder. ma tex'i.a:~. bei.rnc~ in j Eec°. tee'; iru a gaa *low, and the resulting gas-powder m:lx~:~arc=. for c::c,>~~tiry being ,:acc:elerated to a supersonic :~pea.d. :~uc~h. ~wt~eods ~::ar a shown, for example, in patent documents R.U ~.61~ 732, F~i.J 1.~1~3'a'v8. Tc> ins:reasm t:he 2S powder utilization f'act~:~r.~ anc~ t:.he ~~u;;r~.~.t:y of spraying, prior to feeding the supersonic rno~z::L~~ f~:h~: cJa:;-pawde:r mix:-ure is heated to a tempearature lrowe.r t:.r:ar~. t::~~~~ rne~lt.ing tempf~>rature of the powder material:>, as c~is:.::lc~;ed f:c~r E:x.ample in p<~tent documents RU 177?~07~'., I~0 ~~1/:1~~07.6, Rl~ ~0:~t411.
For implementation of these rr~e~tuod:~, the known dev~.ces comprise a source of compressed gas, a gas heating unit, a powder feeder connected witYr either a gas heating unit inlet, as in RU 1603581, or a mix:i_r~c~ chamber no,~nted in front of the supersonic nozzle, as d:isc:Losed for exarnpl.e ir. ~~U 1674585, WO
91/19016, RU 2010619.
In the first case, the powder material contacts heat-generating elements of the rveata.ry un:~.t ~~e.sulting in oxidation of powder material particLe.~ and trie:L ~~ s :~i~::king to the element.
In the second case, the powd.e;r kr~ater::L~::rl ~:3c~es not pass through a gas heating un_Lt but, as i.n the f.i.:r:>t cease, has to pass through the narrowest portion c~~= the muzzle (known as the throat) , which is particu:iar:c.y subject t.cwear from powder material, especial~_tr when ab~ras.v~~ pouade~~s are used, such as metals, or ceramic particles. I t i.;~ t.v.he throat whip..~.h primarily determines th~~= supersonic rma~°z.e operatio:ru and efficiency of the device ~.n general.
In such apparatus, t:he supersor~uc a::Lx~ t:l.c:~w is highly critical tc structural flow distarban~~e, resu'~t:~.nc~ in the risk of a decrease in tree particle vel;.oc.ity, anc~ hence a redu~:aion in the effectiveness of the c;oal-. irae~ p.ro~:.ess . Thus, pri~:~r art gas-dynamic devices haVE'. prov_~.ded fc:~r th~~ ~ir~ j ection means to be upstream of the throat of t~h~.~ m.~per:~c~r~~.c: nozzle, rec:~ui.ring the use of a special mixing chamber, whrcYn. is typically a separate component. Further, as the powder feeder is required to be
FIELD OF THE INVENTION
The present invention relates to appa~at=~s for gas-dynamic spraying of powder materials, and in particular to apparatus for use in machine building and ether industries for producing coatings imparting different properties ~:c the surfaces being worked.
BACKGROUND OF THE INVENTTON
Protection of structures, equipment, mach.in.ery and mechanisms from corrosion and the effec~t.s r~~f corros:i.ve media, enhancing the characteristics of materials and, in particular, production of materials with specif.i.e~~ properties and development of relevant resour~::r~-sav.~r~g t:echnologie s present scientific and engineer~.n~~ chala..engf>s whi.ch have major practical significance.
These problems are solved by cli:~ ferer~t. r~~~thods, among them methods of gas-dynamic spr~ayir~.c~ c~~ pc,mrc:~er coatings ~~ahich are based on a powder. ma tex'i.a:~. bei.rnc~ in j Eec°. tee'; iru a gaa *low, and the resulting gas-powder m:lx~:~arc=. for c::c,>~~tiry being ,:acc:elerated to a supersonic :~pea.d. :~uc~h. ~wt~eods ~::ar a shown, for example, in patent documents R.U ~.61~ 732, F~i.J 1.~1~3'a'v8. Tc> ins:reasm t:he 2S powder utilization f'act~:~r.~ anc~ t:.he ~~u;;r~.~.t:y of spraying, prior to feeding the supersonic rno~z::L~~ f~:h~: cJa:;-pawde:r mix:-ure is heated to a tempearature lrowe.r t:.r:ar~. t::~~~~ rne~lt.ing tempf~>rature of the powder material:>, as c~is:.::lc~;ed f:c~r E:x.ample in p<~tent documents RU 177?~07~'., I~0 ~~1/:1~~07.6, Rl~ ~0:~t411.
For implementation of these rr~e~tuod:~, the known dev~.ces comprise a source of compressed gas, a gas heating unit, a powder feeder connected witYr either a gas heating unit inlet, as in RU 1603581, or a mix:i_r~c~ chamber no,~nted in front of the supersonic nozzle, as d:isc:Losed for exarnpl.e ir. ~~U 1674585, WO
91/19016, RU 2010619.
In the first case, the powder material contacts heat-generating elements of the rveata.ry un:~.t ~~e.sulting in oxidation of powder material particLe.~ and trie:L ~~ s :~i~::king to the element.
In the second case, the powd.e;r kr~ater::L~::rl ~:3c~es not pass through a gas heating un_Lt but, as i.n the f.i.:r:>t cease, has to pass through the narrowest portion c~~= the muzzle (known as the throat) , which is particu:iar:c.y subject t.cwear from powder material, especial~_tr when ab~ras.v~~ pouade~~s are used, such as metals, or ceramic particles. I t i.;~ t.v.he throat whip..~.h primarily determines th~~= supersonic rma~°z.e operatio:ru and efficiency of the device ~.n general.
In such apparatus, t:he supersor~uc a::Lx~ t:l.c:~w is highly critical tc structural flow distarban~~e, resu'~t:~.nc~ in the risk of a decrease in tree particle vel;.oc.ity, anc~ hence a redu~:aion in the effectiveness of the c;oal-. irae~ p.ro~:.ess . Thus, pri~:~r art gas-dynamic devices haVE'. prov_~.ded fc:~r th~~ ~ir~ j ection means to be upstream of the throat of t~h~.~ m.~per:~c~r~~.c: nozzle, rec:~ui.ring the use of a special mixing chamber, whrcYn. is typically a separate component. Further, as the powder feeder is required to be
2 hermetically sealed and to ~::~c:e o~,~eratoc~~i under ruigh pressure, it would have a considerable weigrut.
Locating the mixing chamber between. the heating unit and the S supersonic nozzle a.Lso :Lead: tc;~ add~.t i.on~:L heat l.o:~s, which means consumption o:f mc7:re pc~jwe.i: ~°«r.° heat:i.nc~ the aix: and maintaining a prescribed temperature at =rhe supersonic nozzle heat.
This results in increased r:a.sk during op~~r_ation of the device, as in the event of a loss ow integrity o~ the hermetic seal of the powder feeder, t:he powd~-~r wi.l:1 b~~ em;_tt.ed under high pressure.
The use of flame heating in suc~r deviates creates a further risk, particularly where the. pa:G~t ic~.e:~ ~~_~:w fed through a flame, with the ~oonsequent ri°~~k~-. of f Lre and of emission of hazardous combustion products.
SUMMARY OF THE INVENTIC)N
The invention ther.efor_e seeks tc:~ pro;r:~.de an apparatus for gas-dynamie coating of powder mater:~als, cromprising:
( i ) a supply means ,:~dapt:.ec~ t:cr ~;~.~.p~~l.y ~:yam):eressed ai:r to a non-combustic>n heating ~,znit;
(~~i) a supersonic nozzle directly connected to the heating unit, and having in sequence an inlet potion, a throat and an outlet port:i.on; and (iii) a powder feeder means adapted tc:> sr~pply powder into the supersonic nozzle thrcugh a conduit a~ a juncture location downstream of the throat Ec~r a~:zc:elerr:~=::inc:,r powder wit~h.Ln the supersonic nozzle for dispex s~~l thrcaugl; l~he~ outlet portion and application i.n a bloating process to a wo~~kpiece adjacent to the outlet portion of the st.~personi.c nozzle.
The invention further seeks to provide a method of gas-dynamic coating of a powder materia::. on a substrate, comprising the steps of:
(i) heating a compressed nix stream t~~ a t:ernperature below the melting point of the powder material (ii) passing the heated compressed ai_r: st:.ream through a superson3_c nozzle t~: inc:reae>c~ t.~Y~.e~ ve:lr3~~it;.y of the air stream to a supersonic ;spend;
(~ ii) injecting the' powder mate.~~iaa. :..rutc:~ the air stz=eam having a supersc>nic speed far. ac~c~eler.~at::ian t:3uexw~by within t:he supersonic nozzle; and (i.v) directing the accelerated powder ma.t:erial upon the substrate while maintaining ;,~he powde:r material. at a temperature below i_t s mel ~_ i.ng ~ac~int .
Tr~e apparatus of the invention is des:~.gned to enhance the stability of operation of the nozzle assembly and prolong its service life, reduce power consumption fc:r maintain:i.ng the air temperature at the supersonics: rxazzle ir~~let, increass~
operational safety and avoid tune use c; f: combustion, and reduce apparatus weight.
The invention thus provides <:~n a.ppar_at::us fa:r spraying of powdered material, c:ompri.:~ed of ~:~ heat ing unit for c:,:ompressed air, a powder feeder and a s;..zpex~ s~~cz:i_c; ~:;c~zz:lk~, by c;ora.necti.ng the outlet of the campressed air heating unit to the supersonic nozzle inlet whic.:h is c.:arlrr~ec:ted, irr its supersonic portion, through r3 c~.onduit t: c> tue ~:<>w~~e ~ lveeder out let .
This construction for ~>pray caat~ng, as ~acampared with known devices, makes it possible to increase tixe apera.tianal stability of the apparatus due to lacy of nozzle throat wear, This is achieved as the. powder daes n:~t ~aass through 'the throat arid therefore dc;~es nc;~t i.~~eiuc:e ~we~:rr°, does not clzanqe its characteristics and hence does ancst. of fe<~t:: th.e performance of the nozzle assembly and the apparatus a , ~ whole, whi:Le not adversely affecting the sape:rsanic air fl..aw.
When using powders of sa.lid rcretals ar ceramics, wear of the nozzle walls occurs only in t:tie ::uper~.~orla.c~ portion of the nozzle and does not: invo.l.~~e the n::~zz:.E~ t:huroat. As tare performance of the :~upex~sonicw nc~z:~l~~ .; ire par.ti~~ular the air flow, Mach number, etc. ) is deterrn.iner~~ pz: imarily by the throat area, wear of only the supersonic pardon of the nowzle results in reduced deterioratioru in aperational can: it:ions of trxe nozzle, compared with when t~E'rv; pc.~wder ~~.s injected to the chamber in front (~_.e. upst.rearn,'f ~~f t:he ro.ozzle or t~:~ t:he subsonic portian of the nozzLFe, the:~e>;::>~,~ ensuring <~ :i_onger service life of the nozzle.
Ir. this case, a mixing chamber is not. rnecessary, which simplifies t:he design and re~d~.:Ec~.,:~ tkm=, ~~pparatus ~aeir.~ht:, while connection of the hesating un:i.t 1:o thc~ rrc~~:.zle inlet substantially eliminates )neat: loss ~:rr the mixing cah~~mber.
s Coupling of the powder feedc.~~ un:it witch :he supersonic portion of the nozzle permits rriaint~~v.r-~.irac~ c-;f~ a l,:~wEa:r pressure in the powder feeder than that. at 1::.~:ce rv:~z~ ~.e ~_n Let, as the pressure is alway:~ lower in the :~upe.c:c:m.:i..c~ pc>r~ ior~ of a.ny Laval (supersonic) nozzle than in t::he :>ukasoni.~~ one. This results in the reduction of powder feeder weight anc~ an increase in operational safety.
The design of the apparatus also enables the use of atmospheric, rat;ner than ~~ompre.ssed, air for transporting the powder from the powder feeder tc~s the Anozzle. This reduces the apparatus weight and increases operation~~l safety even more, because i.n this case it is r~c~*~ r~.ec:e.s,~awy that the powder feeder be hermet:ical_ly sea~l.ed. ~'c~>r t.:rl:~_s ~:>urpose, at the point of powder inject-Lon into ~he~ ~,n:~rzle a pressure below atmospheric should be ma:intairuec~ to p~,~oT~r:idE~ powder transport by the atmospheric ~~ir. flow.
In order for the powder to be e.ffecta_arely transported by atmospheric air, the cross-sectional areas ef the supersonic nozzle at the juncture of the nozzle and the powder-feeder conduit should be related to tine throat area according to the following relation:
S~/SK > 1.3P'. + 0.8 where Si is the cross-sec.~tiorv~al. area a~ the supersonic nuzzle at. th.e jl.zncvurt~~ c:af t:r-~re r;oL zle anc~ 'she powder feeder cor~duiC;
Sx is the :>upersonic nort.~.e thr.~at: area; and P_, is the full gas pressure at the superscxnic nozzle inlet, expressed in Mpa.
BRIEF DESCRIPTION GF THE DRAWTNC
The advantages of the present. invention are evident. from the detailed description of the emboc~i.rr~ent. aw°~c~ the f.oll.owing drawing, Figure 1, which is s~ schematic representation of the apparatus of the :i.n~fent:.iora .
Referring to Figure 1, the apparatus 12 is comprised of a compressed air source 1 which is connected by a gas conduit 2 with a heating unit 3, whose outlet end :L3 a.s connewted to an inlet 9 of a supersonic nc>~~z;.l.a ~~~., i.n ~h:ic::h a supersonic portion 5 downstream of a trax~~,aar.: 8 i.:~ c:c~u°znected by a ~zonduit 6 from a powder f_eecler ? .
In operation, compressed air of pressure Po from the compressed air source 1 is de~.i:aere~d to the heating unit 3 by gas conduit 2 to be heated to the req~.~i r~~d temperature. The heated air enter; the supc~rs.:>r;::~..~::: rio:?;~l.e ~~ irl which ~~t is accelerated to a speed c5f ~,evrer~zl hun:c::~rec:~ meters per second.
The powder material (not shown'! is pa:~asec~ from the powder feeder 7 by the coro~uit 6 to tam supE~r.~sorxic. nozzle _cortion 5 of the nozzle 4, in which it i;a p.ickec~ up by the air flow and accelerated within the nozzle ~ between an injectio;~ point 10 and a nozzle outlet 11 . At tnr~ z n jec:r.~.can point 10 true static pressure is maint:ai.rved below t~~:rr~osptm~r ~.c: pr:essurEe, ~=an~~uring that the air with the powder i;s ~~t f~:~:.t::ively drawn im from the powder feeder 7.
In operation, the nozzle outlet 11 is positioned ate an appropriate distance from the workpiece (not shawn~ or other material to be coated.
At the injection paint 10, the pressure :::an be maintained below atmospheric pressure :i..t t.~ie cr::;;~s-.:~PC:tional area of the supersonic nozzle 4 in the ~~~upe~::>on~..::; parte~.an 5 is made t:o exceed that of the thrc>at 1.~~,w :~ ~=~u.i table ,nr~ltiplier. Numerous experiments and calc:.ulatians !~a~~e sh~~~~rn r~hat for efficient operation of the apparatus 12, true cross--sectional area of the supersonic nozzle 4 at its j uncaL~:ee with the powder feeder conduit 6 should be related to the throas~ area by the equation Si/Sk > 1.3P~., + C). C'i where S; is the cross-sectional area of the supersonic nozzle 4 ~t the injection pr:~i.nt;. LO;
SE, is the area of t~t~e :~up~:~w.«nic nozzle throat 8;
and P,: is the ful_C gas ~.~re;7sure at the supersonic nozzle inlet ~~, expressed in ~E?a, Trois design ensures that t~-derE:~ ~.s no ~.~xcw:E:~ssive pressure (above atmospherics in the powder feeder 7, wr~i~.h, in turn, Enhances tree safety of the powder feeder operatioru and simplifies maintenance thereof.
The apparatus 12 of the inventian can be used for the application of powder materials to pr~~duct surfaces to achieve different properties, such as ca.rrosic-~n resa.stance, heat resistance, radiati.c>n praperti.e~ c:~f t.ri.e surface, ett.~. The apparatus 12 can also be us~:7c:~ fc:~:rv c.~~:p~,si ~:.in~ dec:or~~tive coatings.
Locating the mixing chamber between. the heating unit and the S supersonic nozzle a.Lso :Lead: tc;~ add~.t i.on~:L heat l.o:~s, which means consumption o:f mc7:re pc~jwe.i: ~°«r.° heat:i.nc~ the aix: and maintaining a prescribed temperature at =rhe supersonic nozzle heat.
This results in increased r:a.sk during op~~r_ation of the device, as in the event of a loss ow integrity o~ the hermetic seal of the powder feeder, t:he powd~-~r wi.l:1 b~~ em;_tt.ed under high pressure.
The use of flame heating in suc~r deviates creates a further risk, particularly where the. pa:G~t ic~.e:~ ~~_~:w fed through a flame, with the ~oonsequent ri°~~k~-. of f Lre and of emission of hazardous combustion products.
SUMMARY OF THE INVENTIC)N
The invention ther.efor_e seeks tc:~ pro;r:~.de an apparatus for gas-dynamie coating of powder mater:~als, cromprising:
( i ) a supply means ,:~dapt:.ec~ t:cr ~;~.~.p~~l.y ~:yam):eressed ai:r to a non-combustic>n heating ~,znit;
(~~i) a supersonic nozzle directly connected to the heating unit, and having in sequence an inlet potion, a throat and an outlet port:i.on; and (iii) a powder feeder means adapted tc:> sr~pply powder into the supersonic nozzle thrcugh a conduit a~ a juncture location downstream of the throat Ec~r a~:zc:elerr:~=::inc:,r powder wit~h.Ln the supersonic nozzle for dispex s~~l thrcaugl; l~he~ outlet portion and application i.n a bloating process to a wo~~kpiece adjacent to the outlet portion of the st.~personi.c nozzle.
The invention further seeks to provide a method of gas-dynamic coating of a powder materia::. on a substrate, comprising the steps of:
(i) heating a compressed nix stream t~~ a t:ernperature below the melting point of the powder material (ii) passing the heated compressed ai_r: st:.ream through a superson3_c nozzle t~: inc:reae>c~ t.~Y~.e~ ve:lr3~~it;.y of the air stream to a supersonic ;spend;
(~ ii) injecting the' powder mate.~~iaa. :..rutc:~ the air stz=eam having a supersc>nic speed far. ac~c~eler.~at::ian t:3uexw~by within t:he supersonic nozzle; and (i.v) directing the accelerated powder ma.t:erial upon the substrate while maintaining ;,~he powde:r material. at a temperature below i_t s mel ~_ i.ng ~ac~int .
Tr~e apparatus of the invention is des:~.gned to enhance the stability of operation of the nozzle assembly and prolong its service life, reduce power consumption fc:r maintain:i.ng the air temperature at the supersonics: rxazzle ir~~let, increass~
operational safety and avoid tune use c; f: combustion, and reduce apparatus weight.
The invention thus provides <:~n a.ppar_at::us fa:r spraying of powdered material, c:ompri.:~ed of ~:~ heat ing unit for c:,:ompressed air, a powder feeder and a s;..zpex~ s~~cz:i_c; ~:;c~zz:lk~, by c;ora.necti.ng the outlet of the campressed air heating unit to the supersonic nozzle inlet whic.:h is c.:arlrr~ec:ted, irr its supersonic portion, through r3 c~.onduit t: c> tue ~:<>w~~e ~ lveeder out let .
This construction for ~>pray caat~ng, as ~acampared with known devices, makes it possible to increase tixe apera.tianal stability of the apparatus due to lacy of nozzle throat wear, This is achieved as the. powder daes n:~t ~aass through 'the throat arid therefore dc;~es nc;~t i.~~eiuc:e ~we~:rr°, does not clzanqe its characteristics and hence does ancst. of fe<~t:: th.e performance of the nozzle assembly and the apparatus a , ~ whole, whi:Le not adversely affecting the sape:rsanic air fl..aw.
When using powders of sa.lid rcretals ar ceramics, wear of the nozzle walls occurs only in t:tie ::uper~.~orla.c~ portion of the nozzle and does not: invo.l.~~e the n::~zz:.E~ t:huroat. As tare performance of the :~upex~sonicw nc~z:~l~~ .; ire par.ti~~ular the air flow, Mach number, etc. ) is deterrn.iner~~ pz: imarily by the throat area, wear of only the supersonic pardon of the nowzle results in reduced deterioratioru in aperational can: it:ions of trxe nozzle, compared with when t~E'rv; pc.~wder ~~.s injected to the chamber in front (~_.e. upst.rearn,'f ~~f t:he ro.ozzle or t~:~ t:he subsonic portian of the nozzLFe, the:~e>;::>~,~ ensuring <~ :i_onger service life of the nozzle.
Ir. this case, a mixing chamber is not. rnecessary, which simplifies t:he design and re~d~.:Ec~.,:~ tkm=, ~~pparatus ~aeir.~ht:, while connection of the hesating un:i.t 1:o thc~ rrc~~:.zle inlet substantially eliminates )neat: loss ~:rr the mixing cah~~mber.
s Coupling of the powder feedc.~~ un:it witch :he supersonic portion of the nozzle permits rriaint~~v.r-~.irac~ c-;f~ a l,:~wEa:r pressure in the powder feeder than that. at 1::.~:ce rv:~z~ ~.e ~_n Let, as the pressure is alway:~ lower in the :~upe.c:c:m.:i..c~ pc>r~ ior~ of a.ny Laval (supersonic) nozzle than in t::he :>ukasoni.~~ one. This results in the reduction of powder feeder weight anc~ an increase in operational safety.
The design of the apparatus also enables the use of atmospheric, rat;ner than ~~ompre.ssed, air for transporting the powder from the powder feeder tc~s the Anozzle. This reduces the apparatus weight and increases operation~~l safety even more, because i.n this case it is r~c~*~ r~.ec:e.s,~awy that the powder feeder be hermet:ical_ly sea~l.ed. ~'c~>r t.:rl:~_s ~:>urpose, at the point of powder inject-Lon into ~he~ ~,n:~rzle a pressure below atmospheric should be ma:intairuec~ to p~,~oT~r:idE~ powder transport by the atmospheric ~~ir. flow.
In order for the powder to be e.ffecta_arely transported by atmospheric air, the cross-sectional areas ef the supersonic nozzle at the juncture of the nozzle and the powder-feeder conduit should be related to tine throat area according to the following relation:
S~/SK > 1.3P'. + 0.8 where Si is the cross-sec.~tiorv~al. area a~ the supersonic nuzzle at. th.e jl.zncvurt~~ c:af t:r-~re r;oL zle anc~ 'she powder feeder cor~duiC;
Sx is the :>upersonic nort.~.e thr.~at: area; and P_, is the full gas pressure at the superscxnic nozzle inlet, expressed in Mpa.
BRIEF DESCRIPTION GF THE DRAWTNC
The advantages of the present. invention are evident. from the detailed description of the emboc~i.rr~ent. aw°~c~ the f.oll.owing drawing, Figure 1, which is s~ schematic representation of the apparatus of the :i.n~fent:.iora .
Referring to Figure 1, the apparatus 12 is comprised of a compressed air source 1 which is connected by a gas conduit 2 with a heating unit 3, whose outlet end :L3 a.s connewted to an inlet 9 of a supersonic nc>~~z;.l.a ~~~., i.n ~h:ic::h a supersonic portion 5 downstream of a trax~~,aar.: 8 i.:~ c:c~u°znected by a ~zonduit 6 from a powder f_eecler ? .
In operation, compressed air of pressure Po from the compressed air source 1 is de~.i:aere~d to the heating unit 3 by gas conduit 2 to be heated to the req~.~i r~~d temperature. The heated air enter; the supc~rs.:>r;::~..~::: rio:?;~l.e ~~ irl which ~~t is accelerated to a speed c5f ~,evrer~zl hun:c::~rec:~ meters per second.
The powder material (not shown'! is pa:~asec~ from the powder feeder 7 by the coro~uit 6 to tam supE~r.~sorxic. nozzle _cortion 5 of the nozzle 4, in which it i;a p.ickec~ up by the air flow and accelerated within the nozzle ~ between an injectio;~ point 10 and a nozzle outlet 11 . At tnr~ z n jec:r.~.can point 10 true static pressure is maint:ai.rved below t~~:rr~osptm~r ~.c: pr:essurEe, ~=an~~uring that the air with the powder i;s ~~t f~:~:.t::ively drawn im from the powder feeder 7.
In operation, the nozzle outlet 11 is positioned ate an appropriate distance from the workpiece (not shawn~ or other material to be coated.
At the injection paint 10, the pressure :::an be maintained below atmospheric pressure :i..t t.~ie cr::;;~s-.:~PC:tional area of the supersonic nozzle 4 in the ~~~upe~::>on~..::; parte~.an 5 is made t:o exceed that of the thrc>at 1.~~,w :~ ~=~u.i table ,nr~ltiplier. Numerous experiments and calc:.ulatians !~a~~e sh~~~~rn r~hat for efficient operation of the apparatus 12, true cross--sectional area of the supersonic nozzle 4 at its j uncaL~:ee with the powder feeder conduit 6 should be related to the throas~ area by the equation Si/Sk > 1.3P~., + C). C'i where S; is the cross-sectional area of the supersonic nozzle 4 ~t the injection pr:~i.nt;. LO;
SE, is the area of t~t~e :~up~:~w.«nic nozzle throat 8;
and P,: is the ful_C gas ~.~re;7sure at the supersonic nozzle inlet ~~, expressed in ~E?a, Trois design ensures that t~-derE:~ ~.s no ~.~xcw:E:~ssive pressure (above atmospherics in the powder feeder 7, wr~i~.h, in turn, Enhances tree safety of the powder feeder operatioru and simplifies maintenance thereof.
The apparatus 12 of the inventian can be used for the application of powder materials to pr~~duct surfaces to achieve different properties, such as ca.rrosic-~n resa.stance, heat resistance, radiati.c>n praperti.e~ c:~f t.ri.e surface, ett.~. The apparatus 12 can also be us~:7c:~ fc:~:rv c.~~:p~,si ~:.in~ dec:or~~tive coatings.
Claims (4)
1. An apparatus for gas-dynamic coating of powder materials, comprising:
(i) a supply means adapted to supply compressed air to a non-combustion heating unit;
(ii) a supersonic nozzle directly connected to the heating unit, and having in sequence an inlet portion, a throat and an outlet portion; and (ii) a powder feeder means adapted to supply powder into the supersonic nozzle through a conduit at a juncture location downstream of the throat for accelerating powder within the supersonic nozzle for dispersal through the outlet portion and application in a coating process to a workpiece adjacent to the outlet portion of the supersonic nozzle.
(i) a supply means adapted to supply compressed air to a non-combustion heating unit;
(ii) a supersonic nozzle directly connected to the heating unit, and having in sequence an inlet portion, a throat and an outlet portion; and (ii) a powder feeder means adapted to supply powder into the supersonic nozzle through a conduit at a juncture location downstream of the throat for accelerating powder within the supersonic nozzle for dispersal through the outlet portion and application in a coating process to a workpiece adjacent to the outlet portion of the supersonic nozzle.
2. A gas-dynamic coating apparatus as claimed in claim 1, wherein a hermetic seal is not provided for the powder feeder means.
3. A gas-dynamic coating apparatus as claimed in claim 2, wherein a ratio between a cross-sectional area of the supersonic nozzle at the juncture location and at the throat is defined by the equation S i /S k >= 1.3P0 + 0.8 wherein S i is the cross-sectional area at the juncture location;
S k is the cross-sectional area at the throat; and P o is the full gas pressure at the inlet end of the supersonic nozzle, expressed in MPa.
S k is the cross-sectional area at the throat; and P o is the full gas pressure at the inlet end of the supersonic nozzle, expressed in MPa.
4. A method of gas-dynamic coating of a powder material on a substrate, comprising the steps of:
(i) heating a compressed air stream to a temperature below the melting point of the powder material;
(ii) passing the heated compressed air stream through a supersonic nozzle to increase the velocity of the air stream to a supersonic speed;
(vii) injecting the powder material into the air stream having a supersonic speed for acceleration hereby within the supersonic nozzle; and (iv) directing the accelerated powder material upon the substrate while maintaining the powder material at a temperature below its melting point.
(i) heating a compressed air stream to a temperature below the melting point of the powder material;
(ii) passing the heated compressed air stream through a supersonic nozzle to increase the velocity of the air stream to a supersonic speed;
(vii) injecting the powder material into the air stream having a supersonic speed for acceleration hereby within the supersonic nozzle; and (iv) directing the accelerated powder material upon the substrate while maintaining the powder material at a temperature below its melting point.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU96121833 | 1996-11-13 | ||
| RU9696121833A RU2100474C1 (en) | 1996-11-18 | 1996-11-18 | Apparatus for gasodynamically applying coatings of powdered materials |
| PCT/RU1997/000332 WO1998022639A1 (en) | 1996-11-13 | 1997-10-27 | Apparatus for gas-dynamic coating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2270260A1 CA2270260A1 (en) | 1998-05-28 |
| CA2270260C true CA2270260C (en) | 2004-01-06 |
Family
ID=20187211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002270260A Expired - Fee Related CA2270260C (en) | 1996-11-13 | 1997-10-27 | Apparatus for gas-dynamic coating |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US6402050B1 (en) |
| EP (1) | EP0951583B1 (en) |
| KR (1) | KR100387386B1 (en) |
| CN (1) | CN1137003C (en) |
| CA (1) | CA2270260C (en) |
| DE (1) | DE69718514T2 (en) |
| HK (1) | HK1023792A1 (en) |
| RU (1) | RU2100474C1 (en) |
| WO (1) | WO1998022639A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006123965A1 (en) * | 2005-05-20 | 2006-11-23 | Obschestvo S Ogranichennoi Otvetstvennostiju Obninsky Tsentr Poroshkovogo Napyleniya | Apparatus for gas-dynamic applying coatings an method of coating |
Families Citing this family (66)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2145644C1 (en) * | 1998-11-05 | 2000-02-20 | Дикун Юрий Вениаминович | Method and device for producing coat from powder materials |
| JP3918379B2 (en) * | 1999-10-20 | 2007-05-23 | トヨタ自動車株式会社 | Thermal spraying method, thermal spraying device and powder passage device |
| GB0100756D0 (en) * | 2001-01-11 | 2001-02-21 | Powderject Res Ltd | Needleless syringe |
| DE10119288B4 (en) * | 2001-04-20 | 2006-01-19 | Koppenwallner, Georg, Dr.-Ing.habil. | Method and device for gas-dynamic coating of surfaces by means of sound nozzles |
| DE10126100A1 (en) * | 2001-05-29 | 2002-12-05 | Linde Ag | Production of a coating or a molded part comprises injecting powdered particles in a gas stream only in the divergent section of a Laval nozzle, and applying the particles at a specified speed |
| US20030039856A1 (en) * | 2001-08-15 | 2003-02-27 | Gillispie Bryan A. | Product and method of brazing using kinetic sprayed coatings |
| US6685988B2 (en) * | 2001-10-09 | 2004-02-03 | Delphi Technologies, Inc. | Kinetic sprayed electrical contacts on conductive substrates |
| GB0130782D0 (en) * | 2001-12-21 | 2002-02-06 | Rosti Wembley Ltd | Applying metallic coatings to plastics materials |
| RU2205897C1 (en) * | 2001-12-26 | 2003-06-10 | Общество С Ограниченной Ответственностью Обнинский Центр Порошкового Напыления | Coating method |
| US6896933B2 (en) | 2002-04-05 | 2005-05-24 | Delphi Technologies, Inc. | Method of maintaining a non-obstructed interior opening in kinetic spray nozzles |
| US6811812B2 (en) * | 2002-04-05 | 2004-11-02 | Delphi Technologies, Inc. | Low pressure powder injection method and system for a kinetic spray process |
| US7476422B2 (en) * | 2002-05-23 | 2009-01-13 | Delphi Technologies, Inc. | Copper circuit formed by kinetic spray |
| US20030219542A1 (en) * | 2002-05-25 | 2003-11-27 | Ewasyshyn Frank J. | Method of forming dense coatings by powder spraying |
| US6759085B2 (en) * | 2002-06-17 | 2004-07-06 | Sulzer Metco (Us) Inc. | Method and apparatus for low pressure cold spraying |
| US7108893B2 (en) | 2002-09-23 | 2006-09-19 | Delphi Technologies, Inc. | Spray system with combined kinetic spray and thermal spray ability |
| US20040065432A1 (en) * | 2002-10-02 | 2004-04-08 | Smith John R. | High performance thermal stack for electrical components |
| US6924249B2 (en) * | 2002-10-02 | 2005-08-02 | Delphi Technologies, Inc. | Direct application of catalysts to substrates via a thermal spray process for treatment of the atmosphere |
| US20040101620A1 (en) * | 2002-11-22 | 2004-05-27 | Elmoursi Alaa A. | Method for aluminum metalization of ceramics for power electronics applications |
| US20040142198A1 (en) * | 2003-01-21 | 2004-07-22 | Thomas Hubert Van Steenkiste | Magnetostrictive/magnetic material for use in torque sensors |
| US6872427B2 (en) * | 2003-02-07 | 2005-03-29 | Delphi Technologies, Inc. | Method for producing electrical contacts using selective melting and a low pressure kinetic spray process |
| US6871553B2 (en) * | 2003-03-28 | 2005-03-29 | Delphi Technologies, Inc. | Integrating fluxgate for magnetostrictive torque sensors |
| US7543764B2 (en) * | 2003-03-28 | 2009-06-09 | United Technologies Corporation | Cold spray nozzle design |
| US7125586B2 (en) * | 2003-04-11 | 2006-10-24 | Delphi Technologies, Inc. | Kinetic spray application of coatings onto covered materials |
| PL205277B1 (en) * | 2003-05-17 | 2010-03-31 | Przedsi & Eogon Biorstwo Prod | Apparatus for spraying surfaces |
| US7351450B2 (en) * | 2003-10-02 | 2008-04-01 | Delphi Technologies, Inc. | Correcting defective kinetically sprayed surfaces |
| US7335341B2 (en) | 2003-10-30 | 2008-02-26 | Delphi Technologies, Inc. | Method for securing ceramic structures and forming electrical connections on the same |
| GB0325371D0 (en) * | 2003-10-30 | 2003-12-03 | Yazaki Europe Ltd | Method and apparatus for the manufacture of electric circuits |
| US7475831B2 (en) | 2004-01-23 | 2009-01-13 | Delphi Technologies, Inc. | Modified high efficiency kinetic spray nozzle |
| US7024946B2 (en) * | 2004-01-23 | 2006-04-11 | Delphi Technologies, Inc. | Assembly for measuring movement of and a torque applied to a shaft |
| US20050214474A1 (en) * | 2004-03-24 | 2005-09-29 | Taeyoung Han | Kinetic spray nozzle system design |
| US20060038044A1 (en) * | 2004-08-23 | 2006-02-23 | Van Steenkiste Thomas H | Replaceable throat insert for a kinetic spray nozzle |
| US20060040048A1 (en) * | 2004-08-23 | 2006-02-23 | Taeyoung Han | Continuous in-line manufacturing process for high speed coating deposition via a kinetic spray process |
| US20080035615A1 (en) * | 2004-09-16 | 2008-02-14 | Y. Norman Zhou | Lap welding of steel articles having a corrosion resisting metallic coating |
| US20060090593A1 (en) * | 2004-11-03 | 2006-05-04 | Junhai Liu | Cold spray formation of thin metal coatings |
| US20060100380A1 (en) * | 2004-11-05 | 2006-05-11 | Delphi Technologies, Inc. | Slush moldable thermoplastic polyolefin formulation for interior skin |
| US20070031591A1 (en) * | 2005-08-05 | 2007-02-08 | TDM Inc. | Method of repairing a metallic surface wetted by a radioactive fluid |
| US20070074656A1 (en) * | 2005-10-04 | 2007-04-05 | Zhibo Zhao | Non-clogging powder injector for a kinetic spray nozzle system |
| CN100446870C (en) * | 2005-10-31 | 2008-12-31 | 宝山钢铁股份有限公司 | Cold air dynamical spray-painting method and apparatus of delivering powder through down stream |
| US8132740B2 (en) * | 2006-01-10 | 2012-03-13 | Tessonics Corporation | Gas dynamic spray gun |
| US7951242B2 (en) * | 2006-03-08 | 2011-05-31 | Nanoener Technologies, Inc. | Apparatus for forming structured material for energy storage device and method |
| US7972731B2 (en) * | 2006-03-08 | 2011-07-05 | Enerl, Inc. | Electrode for cell of energy storage device and method of forming the same |
| US7674076B2 (en) | 2006-07-14 | 2010-03-09 | F. W. Gartner Thermal Spraying, Ltd. | Feeder apparatus for controlled supply of feedstock |
| US20100019058A1 (en) * | 2006-09-13 | 2010-01-28 | Vanderzwet Daniel P | Nozzle assembly for cold gas dynamic spray system |
| KR100813699B1 (en) * | 2006-10-12 | 2008-03-14 | 인하대학교 산학협력단 | Supersonic nozzle for cold spray coating and method of cold spray coating using the same |
| KR100813698B1 (en) * | 2006-10-12 | 2008-03-14 | 인하대학교 산학협력단 | Supersonic nozzle for cold spray coating and method of cold spray coating using the same |
| RU2353705C2 (en) * | 2006-11-27 | 2009-04-27 | Институт теоретической и прикладной механики им. С.А. Христиановича СО РАН (ИТПМ СО РАН) | Method ofgas-dynamic sputtering of powder materials and facility for its realisation |
| US8313042B2 (en) * | 2006-12-15 | 2012-11-20 | Doben Limited | Gas dynamic cold spray unit |
| GB0708758D0 (en) | 2007-05-04 | 2007-06-13 | Powderject Res Ltd | Particle cassettes and process thereof |
| BE1017673A3 (en) | 2007-07-05 | 2009-03-03 | Fib Services Internat | METHOD AND DEVICE FOR PROJECTING PULVERULENT MATERIAL INTO A CARRIER GAS. |
| US8758849B2 (en) * | 2007-08-06 | 2014-06-24 | Francis C. Dlubak | Method of depositing electrically conductive material onto a substrate |
| CN101274710B (en) * | 2008-04-30 | 2011-02-02 | 浙江理工大学 | Solid particle group accelerating device for shock tube-Laval nozzle |
| US20090317544A1 (en) * | 2008-05-15 | 2009-12-24 | Zao "Intermetcomposit" | Method and Device for Gasodynamically Marking a Surface with a Mark |
| KR101042554B1 (en) | 2009-04-14 | 2011-06-20 | 주식회사 펨빅스 | Apparatus and method feeding powder into pressured gas fluid pipes |
| US9168546B2 (en) * | 2008-12-12 | 2015-10-27 | National Research Council Of Canada | Cold gas dynamic spray apparatus, system and method |
| KR101770576B1 (en) * | 2009-12-04 | 2017-08-23 | 더 리젠츠 오브 더 유니버시티 오브 미시건 | Coaxial Laser Assisted Cold Spray Nozzle |
| US20110259974A1 (en) * | 2009-12-04 | 2011-10-27 | Mt Industries, Inc. | Base unit for hand held skin treatment spray system |
| US20110202019A1 (en) * | 2009-12-04 | 2011-08-18 | Mt Industries, Inc. | Hand held skin treatment spray system with air heating element |
| JP5742594B2 (en) * | 2010-08-31 | 2015-07-01 | 株式会社ニコン | Powder supply apparatus, injection processing system, and electrode material manufacturing method |
| CN102527544B (en) * | 2012-02-24 | 2014-07-23 | 中国科学院金属研究所 | Cold spray device and method for preparing metal composite gradient quasicrystal coating |
| CN102748332B (en) * | 2012-06-28 | 2015-05-06 | 北京工业大学 | Pressure reducing device with temperature recovery function |
| RU2535289C1 (en) * | 2013-05-06 | 2014-12-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Орловский государственный аграрный университет" (ФГБОУ ВПО Орел ГАУ) | Method of restoring tightness of radiator |
| EP2868388A1 (en) * | 2013-10-29 | 2015-05-06 | Alstom Technology Ltd | Device for HVOF spraying process |
| RU2600643C2 (en) * | 2015-03-23 | 2016-10-27 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский национальный исследовательский технический университет им. А.Н. Туполева-КАИ" (КНИТУ-КАИ) | Device for application of coating of polymer powder compositions by electro-gas-flammed method |
| US20160318062A1 (en) | 2015-04-30 | 2016-11-03 | Arvinmeritor Technology, Llc | Shaft balancing system and method of balancing a shaft |
| CN107321517A (en) * | 2017-07-12 | 2017-11-07 | 安徽大地环保科技有限公司 | A kind of powder type pipeline coating apparatus |
| RU2743944C1 (en) * | 2020-08-03 | 2021-03-01 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Московский авиационный институт (национальный исследовательский университет)" | Device for gas-dynamic coating |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2267264A (en) * | 1940-05-14 | 1941-12-23 | James G Bland | Air conduit heater |
| FR978009A (en) * | 1942-12-09 | 1951-04-09 | Method and apparatus for hot spraying of thermoplastic powders and resulting products | |
| US3849057A (en) * | 1970-12-14 | 1974-11-19 | Peck Co C | Jet flame cleaning and coating apparatus and method |
| US4343605A (en) * | 1980-05-23 | 1982-08-10 | Browning Engineering Corporation | Method of dual fuel operation of an internal burner type ultra-high velocity flame jet apparatus |
| SU1687026A3 (en) | 1986-06-03 | 1991-10-23 | Сэн - Гобэн Витраж (Фирма) | Mixing device for producing gas-powder suspension flow |
| US4717075A (en) | 1986-07-18 | 1988-01-05 | Northern Research & Engineering Corp. | Particulate dispersion apparatus |
| US4770344A (en) | 1986-12-08 | 1988-09-13 | Nordson Corporation | Powder spraying system |
| WO1991019016A1 (en) | 1990-05-19 | 1991-12-12 | Institut Teoreticheskoi I Prikladnoi Mekhaniki Sibirskogo Otdelenia Akademii Nauk Sssr | Method and device for coating |
| SU1776205A3 (en) | 1990-07-05 | 1992-11-15 | Nikolaj B Maksimovich | Device for ultrasonic metal spray-coating |
| US5271965A (en) * | 1991-01-16 | 1993-12-21 | Browning James A | Thermal spray method utilizing in-transit powder particle temperatures below their melting point |
| US5120582A (en) * | 1991-01-16 | 1992-06-09 | Browning James A | Maximum combustion energy conversion air fuel internal burner |
| RU2082823C1 (en) * | 1991-06-17 | 1997-06-27 | Московский авиационный институт им.Серго Орджоникидзе | Method of preparing coatings |
| CH680655A5 (en) * | 1991-11-07 | 1992-10-15 | Ulrich Sigrist | |
| RU2041744C1 (en) * | 1992-06-15 | 1995-08-20 | Константиновский Вячеслав Анатольевич | Method and device for applying two-layer coatings to cylindric articles |
| US5330798A (en) * | 1992-12-09 | 1994-07-19 | Browning Thermal Systems, Inc. | Thermal spray method and apparatus for optimizing flame jet temperature |
| US5531590A (en) * | 1995-03-30 | 1996-07-02 | Draco | Shock-stabilized supersonic flame-jet method and apparatus |
| US5932293A (en) * | 1996-03-29 | 1999-08-03 | Metalspray U.S.A., Inc. | Thermal spray systems |
-
1996
- 1996-11-18 RU RU9696121833A patent/RU2100474C1/en not_active IP Right Cessation
-
1997
- 1997-10-27 CA CA002270260A patent/CA2270260C/en not_active Expired - Fee Related
- 1997-10-27 US US09/308,415 patent/US6402050B1/en not_active Expired - Fee Related
- 1997-10-27 EP EP97913559A patent/EP0951583B1/en not_active Expired - Lifetime
- 1997-10-27 CN CNB97199188XA patent/CN1137003C/en not_active Expired - Fee Related
- 1997-10-27 WO PCT/RU1997/000332 patent/WO1998022639A1/en active IP Right Grant
- 1997-10-27 KR KR10-1999-7004177A patent/KR100387386B1/en not_active IP Right Cessation
- 1997-10-27 DE DE69718514T patent/DE69718514T2/en not_active Expired - Lifetime
-
2000
- 2000-05-16 HK HK00102894A patent/HK1023792A1/en not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006123965A1 (en) * | 2005-05-20 | 2006-11-23 | Obschestvo S Ogranichennoi Otvetstvennostiju Obninsky Tsentr Poroshkovogo Napyleniya | Apparatus for gas-dynamic applying coatings an method of coating |
| EA011084B1 (en) * | 2005-05-20 | 2008-12-30 | Общество С Ограниченной Ответственностью Обнинский Центр Порошкового Напыления | Apparatus for gas-dynamic applying coating and method of coating |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0951583B1 (en) | 2003-01-15 |
| RU2100474C1 (en) | 1997-12-27 |
| KR100387386B1 (en) | 2003-06-12 |
| DE69718514D1 (en) | 2003-02-20 |
| EP0951583A1 (en) | 1999-10-27 |
| WO1998022639A1 (en) | 1998-05-28 |
| US6402050B1 (en) | 2002-06-11 |
| EP0951583A4 (en) | 2001-05-30 |
| CN1235648A (en) | 1999-11-17 |
| CA2270260A1 (en) | 1998-05-28 |
| HK1023792A1 (en) | 2000-09-22 |
| DE69718514T2 (en) | 2003-11-20 |
| CN1137003C (en) | 2004-02-04 |
| KR20000053209A (en) | 2000-08-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2270260C (en) | Apparatus for gas-dynamic coating | |
| CN101124065B (en) | Device and method for cleaning, activating or pre-treating workpieces by blasting carbon dioxide snow | |
| US5964418A (en) | Spray nozzle for applying metal-filled solventless resin coating and method | |
| CA2947531C (en) | Method for the densification and spheroidization of solid and solution precursor droplets of materials using plasma | |
| US9206085B2 (en) | Method for densification and spheroidization of solid and solution precursor droplets of materials using microwave generated plasma processing | |
| CA2256656C (en) | Cyclonic mixer | |
| CN102046303A (en) | Method and system for producing coatings from liquid feedstock using axial feed | |
| CN101121156A (en) | High performance kinetic spray nozzle | |
| CN103249862A (en) | Pressure based liquid feed system for suspension plasma spray coatings | |
| EP0770044B1 (en) | Method and apparatus for mixing, spraying and placing cementitious material | |
| JPH02245258A (en) | Wire powder type heat spray gun | |
| US5393345A (en) | Respray of overspray of any atomizable liquid with jet venturi induction pump | |
| CA1247358A (en) | Lance extension venturi sleeve | |
| JPH05138084A (en) | High speed thermal spray device and method for forming flame coating | |
| CN211471533U (en) | Suspension plasma spraying liquid feeding device for preparing gradient coating | |
| CN1986078A (en) | Supersonic two-phase flow sprayer with adjustable laval nozzle | |
| CN100400176C (en) | Apparatus for the gunning of a refractory material and nozzles for same | |
| US8973523B2 (en) | Device for creating and conveying a gas-powder mixture | |
| KR101568287B1 (en) | Powder Coating Apparatus and Method | |
| RU2407700C2 (en) | Installation for flame spraying of nano-structured coat | |
| US20070114304A1 (en) | Angular spray nozzle for gas dynamic spray machine | |
| RU82702U1 (en) | INSTALLATION FOR GAS-FLAME SPRAYING OF NANOSTRUCTURED COATING | |
| SU1563776A1 (en) | Installation for gas-flame powder deposition | |
| RU2486966C1 (en) | Heat-insulation coat applicator | |
| de Paco et al. | Improvement of Functionally Graded Coatings Obtained by Atmospheric Plasma Spraying |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20171027 |