Daim Ntawv Thov Cheeb Tsam ntawm Thermal Spray Technology

Nyob rau hauv xyoo tas los no, cov thev naus laus zis thev naus laus zis tau hloov pauv los ntawm cov txheej txheem tsis zoo uas nyuaj rau kev tswj hwm, mus rau hauv cov cuab yeej muaj tseeb uas cov txheej txheem raug txiav txim siab los coj mus rau hauv tus account cov khoom ntawm ob qho tib si cov khoom tso thiab cov txheej txheem yuav tsum tau ua.

Thermal spray technology tseem tab tom tsim thiab cov ntawv thov tshiab tau pom rau cov ntaub ntawv thermally sprayed txheej thiab cov qauv. Cia peb kawm txog qhov tseem ceeb ntawm daim ntawv thov ntawm thermal spray technology.

1. Aviation

Thermal spraying technology yog dav siv nyob rau hauv aviation teb, xws li tshuaj tsuag thermal barrier coatings (bonding txheej + ceramic nto txheej) ntawm aircraft cav hniav. Plasma spraying, supersonic nplaim spraying bonding txheej txheej, xws li NiCoCrAlY thiab CoNiCrAlY, thiab ceramic nto txheej, xws li 8% Y0-ZrO (YSZ) oxide (muaj tsawg lub ntiaj teb oxide) doping YSZ hloov kho, xws li TiO + YSZ, YSZ + A10 los yog Tsis tshua muaj lub ntiaj teb lanthanum zirconate-raws li oxides xws li La (ZoCe) 024 kuj tau kawm ua thermal barrier coatings ntawm foob pob ua ntxaij cav combustion chambers5. Lub ntsiab rotor ncej ntawm helicopters rau kev ua tub rog nyob rau hauv cov suab puam yog yooj yim eroded los ntawm xuab zeb. Kev siv HVOF thiab cov tshuaj txau ntawm WC12Co tuaj yeem txhim kho nws qhov hnav tsis kam. HVOF tshuaj tsuag Al-SiC txheej ntawm magnesium alloy substrate rau aviation, uas tuaj yeem txhim kho hnav tsis kam.

2. Kev lag luam hlau thiab roj

Kev lag luam hlau thiab hlau yog qhov tseem ceeb ntawm daim ntawv thov thermal spray, thiab nws yog qhov thib ob loj tshaj plaws kev lag luam hauv Suav teb tom qab thermal spray daim ntawv thov hauv kev lag luam aviation. Nyob rau hauv 2009, Tuam Tshoj tus crude steel tso zis accounted rau 47% ntawm lub ntiaj teb no tus crude steel tso zis. Nws yog lub teb chaws muaj tseeb steel, tab sis nws tsis yog lub zog steel. Qee cov hlau zoo tseem yuav tsum tau tuaj txawv teb chaws ntau. Ib qho ntawm cov laj thawj tseem ceeb tshaj yog tias Tuam Tshoj cov thermal txau yog siv tsawg dua hauv kev lag luam steel. Xws li blast furnace tuyere, high-temperature annealing furnace roller, hot roller plate conveying roller, support roller, straightening roller, galvanized lifting the roller, sinking roller, etc. txo cov nqi, Txhim kho cov khoom zoo, thiab cov txiaj ntsig tseem ceeb yog 19-0.

Nyob rau xyoo 2011 ITSC lub rooj sib tham, tus kws tshaj lij Nyij Pooj Namba tau tshawb xyuas cov ntaub ntawv pov thawj ntsig txog kev siv cov tshuaj txau thermal hauv kev lag luam steel thoob ntiaj teb. Cov txiaj ntsig kev tshawb fawb pom tau tias txij xyoo 1990 txog 2009, Japanese patents suav txog 39%, Tebchaws Asmeskas patents suav txog 22%, European patents suav txog 17%, Suav patents suav txog 9%, Kauslim patents suav txog 6%, Lavxias patents suav txog 3. %, Brazilian patents account rau 3%, thiab Indian patents account rau 1%. Piv nrog rau cov teb chaws tsim xws li Nyiv, Teb chaws Europe, thiab Tebchaws Meskas, daim ntawv thov thermal txau hauv kev lag luam steel hauv Suav teb tsawg dua, thiab qhov chaw loj hlob tuaj.

Cov ntaub ntawv qhia ntxaws txog lub rooj sib tham kuj suav nrog NiCrAlY thiab YO hmoov ua cov khoom siv raw, NiCrAlY-Y0 tshuaj tsuag hmoov tau npaj los ntawm agglomeration sintering thiab nws txoj kev sib xyaw, thiab txheej txheej tau npaj los ntawm HVOFDJ2700 tshuaj tsuag phom. Simulate lub anti-buildup ntawm cub tawg yob nyob rau hauv lub steel kev lag luam. Cov txiaj ntsig kev tshawb fawb pom tau tias cov hmoov txheej npaj los ntawm agglomeration sintering txoj kev muaj cov tshuaj tiv thaiv manganese oxide zoo heev, tab sis tsis zoo rau cov hlau oxide tsim. Txheej txheej npaj los ntawm cov hmoov sib tov.

Thermal spraying technology yog dav siv nyob rau hauv cov roj, roj pipeline, thiab lub rooj vag valve nto spraying anti-corrosion thiab hnav-resistant coatings, feem ntau yog HVOF spraying WC10Co4Cr txheej.

3. Lub zog tshiab, cov khoom siv tshiab, thiab cov roj turbines

Cov roj hluav taws xob (SOFCs) tam sim no tsim los ntawm cov phaj tiaj tiaj thiab nyias daim hlau, suav nrog anodes, electrolytes, cathodes,thiab tiv thaiv txheej. Tam sim no, cov khoom tsim thiab cov cuab yeej siv hluav taws xob ntawm cov roj hluav taws xob tau ua tiav, thiab qhov teeb meem tseem ceeb yog qhov teeb meem kev npaj. Thermal spraying technology (low-pressure plasma spraying, vacuum plasma spraying) tau dhau los ua cov cuab yeej nrov tshaj plaws. Daim ntawv thov ua tiav ntawm thermal txau ntawm SOFC yog daim ntawv thov tshiab tshaj plaws ntawm thermal txau tshuab hauv lub zog tshiab, thiab tseem txhawb kev txhim kho cov khoom siv tshuaj txau. Piv txwv li, cov plasma sprayed LaSrMnO (LSM) tshuaj tsuag cov khoom, lub tuam txhab German HC.Starck twb tau pib tsim thiab muag khoom ntawm cov khoom no thiab lwm yam khoom siv. Cov kws tshawb fawb kuj tau siv cov kua-theem plasma txau los npaj cov khoom siv electrode LiFePO rau lithium-ion roj teeb. cov ntaub ntawv tshawb fawb ntsig txog.

Txoj kev loj hlob ntawm thermal spraying tshuab yog inseparable los ntawm kev hloov tshiab ntawm cov khoom siv. Txhua lub rooj sib tham thoob ntiaj teb thermal txau yuav muaj cov lus ceeb toom txog cov cuab yeej tshiab cuam tshuam. Vim tias nws qhov kub thiab txias tsim, K2 tshuaj tsuag phom rau GTV HVOF txau tuaj yeem txau cov hlau txheej xws li Cu txheej, thiab cov pa oxygen ntawm cov txheej tsuas yog 0.04%, uas yog piv rau cov tshuaj tsuag txias. Siv lub tshuab hluav taws xob siab HVOF txau, lub combustion chamber siab tuaj yeem ncav cuag 1 ~ 3MPa, thiab cov nplaim hluav taws kub tsis tshua muaj kub thiab kub ceev, txau 316L stainless hlau hmoov, qhov kev tso tawm tuaj yeem ncav cuag 90%.

Kev lag luam roj turbine hniav tau pib siv plasma-sprayed thermal barrier coatings, xws li YSZ, LazZrzO, SmzZrzO, GdzZr20 txheej txheej, uas tau siv dav hauv txawv teb chaws thiab tam sim no muaj kev tshawb fawb nrov hauv Suav teb.

4. Mechanical hnav tsis kam

Thermal spraying thev naus laus zis yeej ib txwm yog ib qho tseem ceeb ntawm txhua lub rooj sib tham thoob ntiaj teb thermal spraying hauv kev ua haujlwm ntawm kev hnav tsis kam vim tias yuav luag txhua qhov chaw ua haujlwm tau hnav thiab tsim kua muag, thiab kev ntxiv dag zog thiab kho qhov chaw yog lub neej yav tom ntej ntawm kev txhim kho thev naus laus zis, tshwj xeeb tshaj yog nrog cov thev naus laus zis. ntau yam kev siv hauv kev lag luam hnav-tiv taus thiab tseem txhawb kev txhim kho cov khoom siv thermal spray hnav-resistant. Cov txheej txheem hnav-tiv taus feem ntau yog: tshuaj tsuag vuam (nplaim txau + remelting) NiCrBSi alloys, uas kuj yog siv dav tshaj plaws thiab kawm hauv kev hnav-tiv taus, xws li HVOF txau FeCrNBC txheej, arc txau NiCrBSi tom qab remelting Kev Tshawb Fawb ntawm microstructure thiab hnav tsis kam, thiab lwm yam .; HVOF txau, txias txau tungsten carbide-raws li txheej, thiab chromium carbide-raws li txheej yog siv dav tshaj plaws thiab tshawb fawb hauv kev hnav tsis kam; Tuam Tshoj lub high-end kev lag luam tungsten carbide-raws li tshuaj tsuag hmoov cia siab rau imports, xws li aircraft Spraying ntawm ntog ncej, sinking roller, corrugating roller, thiab lwm yam. Nrog rau txoj kev loj hlob ntawm txias spraying thiab sov spraying tshuab los npaj tungsten carbide-raws li txheej, kuj tseem muaj cov kev cai tshiab rau tungsten carbide-based spraying hmoov, xws li cov hmoov particle loj yuav tsum yog -20um + 5um.

5. Nanostructures thiab cov ntaub ntawv tshiab

Nanostructured coatings, hmoov, thiab cov ntaub ntawv tshiab tau ua lub hom phiaj ntawm kev tshawb fawb thoob ntiaj teb ntau xyoo. Nanostructured WC12Co txheej yog npaj los ntawm HVOF txau. Qhov loj me me ntawm cov tshuaj txau yog -10μm + 2μm, thiab WC grain loj yog 400nm. Lub tuam txhab German DURUM muaj kev tsim khoom lag luam. Kuv lenvk kawm WC10Co4Cr hmoov npaj los ntawm kev siv tungsten carbide nrog ntau qhov ntau thiab tsawg raws li cov ntaub ntawv raw, xws li WC nplej loj> 12um (cov qauv qauv), WC grain loj 0.2 ~ 0.4um (zoo grain qauv), WC grain loj ~ 0.2um (ultra-fine grain qauv); WC grain loj

12um (cov qauv qauv), WC grain loj 0.2 ~ 0.4um (zoo grain qauv), WC grain loj ~ 0.2um (ultra-fine grain qauv); WC grain loj

6. Biomedical thiab ntawv luam ntawv

Thermal spray technology yog ntau dua thiab dav siv nyob rau hauv kev kho mob kev lag luam, xws li lub tshuab nqus tsev plasma, HVOF sprayed Ti, hydroxyapatite, thiab hydroxyapatite + Ti coatings siv nyob rau hauv kev kho mob kev lag luam (dental, orthopedics). Cov tshuaj txau ntawm TiO2-Ag, xws li tso rau ntawm Cu coils ntawm cov cua txias, tuaj yeem cuam tshuam cov kab mob loj hlob thiab ua kom lawv huv si.