Koj puas xav paub txog kev tsim cov hmoov hlau ultrafine? Saib ntawm no.

Nyob rau hauv niaj hnub kev lag luam kev lag luam, cov hmoov hlau ultra-nplua tau dhau los ua cov ntaub ntawv tseem ceeb rau ntau qhov kev lag luam high-tech. Lawv daim ntawv thov yog loj heev thiab tseem ceeb, xws li hlau 3D luam ntawv (additive manufacturing) thiab thermal barrier coatings rau aerospace xyaw rau conductive silver paste rau hluav taws xob Cheebtsam thiab titanium alloy hmoov rau kev kho mob cog. Txawm li cas los xij, ua tau zoo, tsis tshua muaj oxygen, spherical ultra-fine hlau hmoov yog ib qho teeb meem nyuaj heev. Ntawm cov txheej txheem ntau lawm, cov dej kub ntawm cov hlau atomization tau txais txiaj ntsig ntau ntxiv vim nws qhov tshwj xeeb zoo. Tab sis nws puas yog "zoo" raws li lus xaiv? Kab lus no qhia txog nws cov hauv paus ntsiab lus, qhov zoo, cov nyom, thiab cov ntawv thov los nrhiav cov lus teb.

1. Ultra-Fine Metal Powder: Lub "Invisible Cornerstone" ntawm Kev Lag Luam Niaj Hnub No

Ua ntej tshuaj xyuas cov khoom siv, nws yog ib qho tseem ceeb kom nkag siab tias vim li cas cov hmoov hlau ultra-nplua yog qhov tseem ceeb.

(1) Kev txhais thiab cov qauv:

Feem ntau, cov hmoov hlau uas muaj qhov loj me ntawm 1 micron thiab 100 microns yog suav tias yog cov hmoov zoo, thaum cov khoom uas muaj qhov me me hauv qab 20 microns (txawm tias mus rau qib sub-micron) yog hu ua "ultra-fine" lossis "micro-fine" hmoov. Cov hmoov no muaj qhov tshwj xeeb loj heev ntawm thaj chaw, uas ua rau muaj qhov cuam tshuam ntawm qhov chaw, cov teebmeem me me, thiab cov teebmeem quantum tsis pom hauv cov ntaub ntawv ntau.

(2) Core Application Fields:

Additive Manufacturing (3D Printing): Qhov no yog qhov kev thov loj tshaj plaws rau cov hmoov hlau zoo heev. Lasers los yog electron beams sequentially yaj txheej ntawm hmoov rau precisely tsim qhov chaw nrog complex geometries rau aerospace, kev kho mob (xws li, lub duav pob qij txha, hniav crowns), thiab pwm industries. Cov hmoov lub flowability, particle loj tis, thiab sphericity ncaj qha txiav txim siab qhov luam tawm qhov tseeb thiab kev ua tau zoo.

Hlau Txhaj Moulding (MIM): Ultra-nplua hlau hmoov yog tov nrog ib tug binder thiab txhaj rau hauv pwm los tsim ib tug zoo. Qhov "ntsuab ib feem" no dhau mus debinding thiab sintering los tsim high-volume, high-precision, heev complex me me Cheebtsam, xws li xov tooj SIM tais, phom phom, thiab saib rooj plaub.

Thermal Spray Technology: Hmoov yog muab tso rau hauv qhov kub-kub los yog cov plasma kwj, yaj, thiab tom qab ntawd txau ntawm qhov nrawm mus rau qhov chaw substrate los tsim cov hnav-resistant, corrosion-resistant, thiab oxidation-resistant coatings. Dav siv nyob rau hauv cav hniav, roj pipelines, thiab lwm yam.

Lwm cov teb: Kuj suav nrog cov khoom siv hluav taws xob rau kev lag luam hluav taws xob, cov khoom siv hluav taws xob rau kev lag luam tshuaj, thiab cov khoom siv hluav taws xob rau kev tiv thaiv kev lag luam.

Cov ntawv thov high-end no tsim cov kev cai nruj heev ntawm cov hmoov hlau hlau qhov loj me, sphericity, oxygen cov ntsiab lus, flowability, thiab pom tseeb ntom.

2. Ntau yam ntawm cov tshuab tsim hmoov: Vim li cas Dej Atomization sawv?

Cov thev naus laus zis tseem ceeb rau kev tsim cov hmoov hlau tuaj yeem muab faib ua cov txheej txheem lub cev (xws li, atomization), cov txheej txheem tshuaj (xws li, tshuaj vapor deposition, txo qis), thiab cov txheej txheem siv tshuab (xws li pob milling). Ntawm lawv, atomization yog txoj hauv kev tseem ceeb vim nws qhov ua tau zoo ntau lawm, tus nqi tswj tau zoo, thiab tsim nyog rau kev tsim khoom lag luam.

Atomization ntxiv muab faib ua roj atomization thiab dej atomization raws li nruab nrab siv.

Gas Atomization: Siv cov roj cua siab inert (xws li, argon, nitrogen) los cuam tshuam cov kwj ntawm cov hlau molten, rhuav nws mus rau hauv cov tee dej uas ua rau cov hmoov. Qhov zoo muaj xws li cov hmoov nplej siab zoo thiab kev tswj cov pa oxygen zoo. Qhov tsis zoo yog cov cuab yeej siv yooj yim, cov nqi roj av siab, kev siv hluav taws xob siab, thiab cov txiaj ntsig qis rau cov hmoov zoo heev.

Dej Atomization: Siv cov dav hlau dej siab siab ua qhov nruab nrab tawg. Ib txwm siv dej atomization, vim nws qhov ceev ceev txias, ua rau cov hmoov tsis zoo feem ntau (flaky lossis ze-spherical) nrog cov pa oxygen siab, feem ntau siv rau hauv thaj chaw uas cov duab tsis tseem ceeb, xws li metallurgy thiab vuam cov ntaub ntawv.

High-temperature hlau dej atomization tshuab yog ib tug loj innovation raws li ib txwm dej atomization, cleverly combining lub siab efficiency ntawm dej atomization nrog lub siab zoo ntawm roj atomization.

3. Demystifying lub High-Temperature Hlau Dej Atomization Powder Qhuav Tshuab: Nws Ua Haujlwm Li Cas?

Kev ua haujlwm siab kub dej atomizer lub tswv yim tsim qauv tseem ceeb yog: kom atomize cov hlau tee kom meej li sai tau thiab cia lawv nyob twj ywm kheej kheej ua ntej lawv tiv tauj dej.

Nws txoj haujlwm ua haujlwm tuaj yeem suav nrog hauv cov kauj ruam tseem ceeb no:

(1) Melting thiab Superheating: Cov khoom siv hlau los yog hlau yog melted nyob rau hauv nruab nrab zaus induction rauv nyob rau hauv lub tshuab nqus tsev los yog ib tug tiv thaiv cua thiab rhuab mus rau ib tug kub ntawm lub melting point ("superheated" xeev, feem ntau 200-400 ° C siab dua). Qhov kub thiab txias txo qhov molten hlau viscosity thiab nto nro, uas yog qhov tseem ceeb ua ntej rau kev tsim cov hmoov zoo thiab kheej kheej.

(2) Kev taw qhia thiab ruaj khov Pouring: Molten hlau tsim cov kwj dej ruaj khov los ntawm cov lus qhia hauv qab nozzle. Kev ruaj ntseg ntawm cov kwj deg no yog qhov tseem ceeb rau cov hmoov sib xyaw me me ntawm kev faib tawm.

(3) High-Pressure Atomization: Qhov no yog qhov tseem ceeb ntawm kev siv tshuab. Cov kwj dej yog raug cuam tshuam rau ntawm lub atomization nozzle los ntawm ob peb lub siab-siab (txog 100 MPa lossis ntau dua) cov dav hlau dej los ntawm ntau lub kaum ntse ntse. Cov dej siab tsis tshua muaj siab ua rau cov dav hlau dav hlau kinetic zog, muaj peev xwm ntawm 粉碎 (fensui: crushing) qhov qis-viscosity, low-surface-tension superheated hlau kwj rau hauv cov dej zoo heev.

(4) Davhlau thiab Spheroidization: Cov crushed hlau micro-droplets muaj sij hawm txaus thaum lawv ya mus rau hauv qab ntawm lub atomization ntauwd kom cog lus rau hauv zoo meej spheres nyob rau hauv qhov kev txiav txim ntawm nto nro. Cov cuab yeej tsim kom muaj qhov chaw zoo tshaj plaws rau cov tee spheroidization los ntawm kev tswj cov huab cua hauv lub atomization ntauwd (feem ntau yog ntim nrog cov roj tiv thaiv zoo li nitrogen) thiab lub davhlau deb.

(5) Ceev ceev Solidification thiab Sau: Cov tee spherical tee sai sai thaum poob rau hauv cov dej-txias sau tank hauv qab no, tsim cov hmoov kheej kheej. Cov txheej txheem tom ntej xws li dewatering, ziab, tshuaj ntsuam, thiab sib xyaw ua tiav cov khoom kawg.

4. Qhov "Usefulness" ntawm High-Tsav Dej Atomization: Kev Ntsuam Xyuas Kev Ntsuas Zoo

Nws raug suav hais tias yog "zoo" vim tias nws hais txog ntau qhov mob hauv cov hmoov nplej ultra-nplua:

1. Tsis tshua muaj siab Ultra-Fine Powder Yield: Qhov no yog nws qhov txiaj ntsig tseem ceeb tshaj plaws. Kev sib xyaw ua ke ntawm ultra-siab dej siab thiab hlau superheating thev naus laus zis ua rau nce cov txiaj ntsig ntawm lub hom phiaj ultra-fine hmoov nyob rau hauv 15-25μm ntau rau ntau zaus ntawm cov roj atomization, txo cov nqi tsim khoom.

2. Cov hmoov zoo Sphericity: Superheating txo cov molten hlau qhov nro, thiab optimized atomization txheej txheem ua rau cov hmoov sphericity ze ze ntawm cov roj atomized hmoov, ua tau raws li qhov yuav tsum tau rau 3D luam ntawv thiab MIM.

3. Cov ntsiab lus tsis tshua muaj pa oxygen: Txawm hais tias siv dej ua ib qho nruab nrab qhia txog kev pheej hmoo oxidation, kev ntsuas zoo li kev tsim lub taub hau zoo, ua kom lub atomization chamber nrog cov roj tiv thaiv, thiab ntxiv cov tshuaj tua kab mob uas tsim nyog tuaj yeem tswj cov ntsiab lus oxygen hauv qib qis (rau ntau cov alloys, qis dua 500 ppm), ua tau raws li cov ntawv thov feem ntau.

4. Tus nqi tsim khoom tseem ceeb: Muab piv rau cov pa roj atomization siv cov roj inert kim, cov nqi dej yuav luag tsis txaus ntseeg. Cov cuab yeej siv peev thiab kev siv hluav taws xob siv hluav taws xob kuj feem ntau qis dua rau cov khoom siv roj atomization ntawm cov khoom sib npaug, muab kev lag luam muaj txiaj ntsig rau kev lag luam loj.

5. Cov khoom siv dav dav: Haum rau kev tsim cov hmoov los ntawm cov hlau-raws li, npib tsib xee-raws li, cobalt-based alloys rau tooj liab alloys, aluminium alloys, tin alloys, thiab lwm yam, qhia tias muaj zog versatility.

5. Duab ntxoov ntxoo nyob rau hauv lub tsom teeb: Lub hom phiaj saib nws cov kev sib tw thiab kev txwv

Tsis muaj technology zoo meej; high-temperature water atomization muaj nws cov ciam teb siv tau thiab nyuaj los kov yeej:

1. Rau Cov Khoom Siv Hluav Taws Xob: Rau cov hlau ua haujlwm zoo li titanium alloys, tantalum, thiab niobium, uas yog heev nquag oxidation, qhov kev pheej hmoo ntawm oxidation los ntawm cov dej nruab nrab tseem siab, ua rau nws nyuaj rau tsim cov hmoov nrog ultra-low oxygen cov ntsiab lus (xws li, <200 ppm). Cov ntaub ntawv no yog tam sim no lub npe ntawm cov thev naus laus zis xws li inert gas atomization lossis plasma rotating electrode txheej txheem (PREP).

2. "Satelliting" Phenomenon: Thaum lub sij hawm atomization, ib co twb solidified los yog semi-solidified me hmoov tej zaum yuav cuam tshuam cov tee dej loj thiab ua raws li lawv, tsim "satellite balls," uas tuaj yeem cuam tshuam cov hmoov flowability thiab kis tau. Yuav tsum tau txo qis los ntawm optimizing cov txheej txheem tsis.

3. Kev Tswj Xyuas Txheej Txheem: Kev ruaj khov ua cov hmoov zoo yuav tsum muaj kev sib koom ua ke ntawm 协同 (xietong: 协同 kev sib koom ua ke) kev tswj ntawm kaum ob ntawm cov tsis xws li hlau superheat kub, dej siab, dej ntws tus nqi, nozzle qauv, thiab huab cua tswj, sawv cev rau ib tug high technical barrier.

4. Kev Siv Dej Siv Dej thiab Kev Kho Dej: Kev tsim khoom loj yuav tsum tau siv cov dej rov ua kom muaj cua txias thiab cov dej khib nyiab, ntxiv qhov nyuaj rau cov chaw pabcuam.

6. Xaus: Puas Yog Qhov Zoo?

Cov lus teb yog: Hauv nws qhov kev txawj ntse, yog, nws yog "zoo heev."

Lub siab kub hlau dej atomization hmoov ntau lawm tshuab tsis yog lub hom phiaj los hloov tag nrho lwm cov hmoov ntau lawm technologies. Hloov chaw, nws ua haujlwm raws li kev daws teeb meem uas ua tiav qhov sib npaug zoo ntawm kev ua haujlwm siab, tus nqi qis, thiab kev ua haujlwm siab, ua tau raws li kev lag luam loj hlob xav tau rau ultra-fine spherical hlau hmoov.

Yog tias koj lub hom phiaj tseem ceeb yog tsim cov hmoov zoo los ntawm cov ntaub ntawv zoo li cov hlau tsis muaj steel, cov cuab yeej hlau, cov hlau kub kub, cobalt-chromium alloys, tooj liab alloys, rau kev siv hauv 3D luam ntawv, MIM, thermal spraying, thiab lwm yam, thiab koj muaj cov kev xav tau siab rau kev tswj tus nqi, ces cov dej kub atomization tshuab yog undoubtedly ib qho kev xaiv zoo nkauj thiab kev sib tw. Nws ua rau "mastering" ultra-nplua hlau hmoov ntau lawm ua tau.

Txawm li cas los xij, yog tias koj cov khoom lag luam yog titanium alloy lossis lwm cov hmoov hlau ua haujlwm uas xav tau cov ntsiab lus oxygen siab tshaj plaws rau cov ntawv thov hauv aerospace saum toj kawg nkaus, koj yuav tsum xav txog lwm yam kev xaiv xws li cov roj inert roj atomization lossis plasma atomization technologies.

Nyob rau hauv cov ntsiab lus, lub high-temperature hlau dej atomization hmoov ntau lawm tshuab yog ib tug tseem ceeb ua tau zoo nyob rau hauv kev loj hlob ntawm niaj hnub hmoov metallurgy technology. Nws siv txoj kev xav los daws cov tsoos 矛盾 (maodun: contradiction) ntawm qhov zoo thiab tus nqi, dhau los ua lwm lub cav muaj zog tsav kev txhim kho ntawm high-end manufacturing. Thaum xaiv, nkag siab tag nrho koj cov khoom siv, cov khoom xav tau, thiab cov cuab yeej technology zoo thiab qhov tsis zoo yog qhov tseem ceeb rau kev txiav txim siab zoo tshaj plaws thiab tiag tiag "mastering" ultra-fine hlau hmoov ntau lawm.