Nrog rau txoj kev loj hlob sai ntawm cov cuab yeej tsim khoom lag luam, kev ua tsis tiav thiab kev tshem tawm ntawm ntau yam khoom siv cuab yeej cuab tam hauv ib puag ncig hnyav thiab nyuaj tau ua rau poob nyiaj txiag loj thiab ntau yam khoom siv tsis ua haujlwm. Nws yog qhov ceev nrooj los tshawb nrhiav cov khoom siv hluav taws xob muaj txiaj ntsig zoo thiab ntsuab tshiab los ntxiv dag zog rau cov khoom tseem ceeb ntawm cov cuab yeej tshiab. Lub neej ncua sij hawm thiab remanufacturing ntawm obsolete khoom. Cov ntaub ntawv ceramic feem ntau yog siv los ua cov ntaub ntawv tiv thaiv saum npoo rau cov hlau qhov chaw vim tias lawv cov ntsiab lus melting siab, siab zog, tsis tshua muaj thermal conductivity, thiab thermal expansion coefficient. Ceramic txheej tuaj yeem txhim kho qhov hnav tsis kam, tiv thaiv corrosion, thiab kub-kub oxidation tsis kam ntawm substrate, thiab yog dav siv hauv aerospace, petrochemical, machinery manufacturing, thiab lwm yam.
Cov txheej txheem kev npaj txheej txheem ceramic feem ntau suav nroglaser cladding, high-temperature self-propagating synthesis, vapor deposition, thiab thermal spraying. Ntawm lawv, qhov kub-kub tus kheej-propagating synthesis muaj cov txheej txheem yooj yim, kev siv hluav taws xob tsawg, thiab lub voj voog luv luv, tab sis yuav tsum muaj cov hmoov purity siab heev raws li cov khoom siv raw. Nws tsis haum rau kev tsim khoom loj, thiab cov txheej txheem tshuaj tiv thaiv yog nrawm thiab tsis yooj yim rau kev tswj kom raug; ceramic txheej npaj los ntawm vapor deposition muaj siab purity thiab zoo ceev, tab sis cov khoom kim heev thiab cov efficiency ntau lawm yog tsawg; thermal spraying ceramic txheej muaj kev ua haujlwm siab thiab tswj tau tuab. Cov txheej txheem yog yooj yim thiab yuav siv tau rau spraying complex-puab workpieces, tab sis kuj muaj ntau yam tsis xws luag xws li txheej pores thiab tsis tshua muaj kev sib raug zoo quab yuam; laser cladding efficiency yog siab, thiab lub cladding cheeb tsam yog precisely tswj. Kev npaj cov txheej txheem ceramic muaj kev ua tau zoo, tus nqi, kev tiv thaiv ib puag ncig, thiab lwm yam zoo, tab sis cov txheej txheem ceramic kuj tseem muaj qhov tsis xws luag xws li tawg thiab qhov pores.
Laser cladding tshuab tuaj yeem yaj cov ntaub ntawv ceramic kom kov yeej lawv cov yam ntxwv ua haujlwm nyuaj thiab npaj cov txheej txheem ceramic zoo. Cov txheej txheem ceramic tau txais los ntawm cov thev naus laus zis no muaj cov khoom siv zoo heev, lub cev thiab tshuaj lom neeg, uas muaj txiaj ntsig zoo rau kev ua haujlwm ntev ntawm cov khoom siv, txo cov nqi thiab txo cov khoom siv pov tseg. Nto ntxiv dag zog thiab remanufacturing yog ib qho tseem ceeb kev taw qhia ntawm ntsuab manufacturing thiab ib tug zoo txoj kev kom ua tau lub zog txuag thiab emission txo thiab txhawb kom sustainable kev lag luam thiab kev loj hlob. Nrog rau kev nce qib txuas ntxiv ntawm laser cladding thev naus laus zis thiab hloov cov khoom siv cladding, kev npaj cov txheej txheem ceramic los ntawm laser cladding tuaj yeem ntxiv dag zog rau saum npoo ntawm qhov chaw hauv ib puag ncig nyuaj thiab ua kom lub neej ntev ntawm remanufacturing, uas yog nyob rau hauv txoj kab nrog txoj kev loj hlob zoo tswv yim tawm tswv yim. los ntawm lub teb chaws. Txoj kev npaj "Made in China 2025" txoj kev loj hlob tau los ze zog. Laser cladding ceramic txheej rau remanufacturing belongs rau qeb ntawm advanced additive manufacturing thiab ntsuab manufacturing thiab zoo siv lub "14th Tsib-Xyoo" txuas ntxiv resource txoj kev npaj.
1 Laser cladding ceramic txheej
laser cladding ceramic coatings rau nto ntxiv dag zog thiab remanufacturing yuav muab faib ua puas ceramic coatings, hlau-ceramic composite coatings, laser nyob rau hauv situ hluavtaws ceramic txheej, thiab nanocomposite ceramics raws li cov khoom muaj pes tsawg leeg thiab tsim mechanism txheej.
- Composite ceramic txheej: Cov kws tshawb fawb tau tsim ntau hom eutectic laser cladding composite ceramic coatings uas muaj nitrides, borides, carbides, thiab oxides. Cov ntaub ntawv sib xyaw ua ke ntawm ntau cov khoom siv ceramics muaj kev sib nrig sib solubility thiab affinity ntawm cov khoom, uas tuaj yeem txo cov theem ntawm cov nplej loj, txhim kho cov txheej txheem lub zog thiab tawv, thiab ua kom cov txheej ruaj khov dua li ib-theem ceramic coatings. Zoo thermophysical zog thiab zoo heev zog xws li hnav thiab corrosion kuj.
- Hlau-ceramic composite txheej: Hlau-ceramic composite txheej yog ib tug ua ke ntawm ceramic theem (txhim kho theem) thiab hlau los yog alloy (kev sib txuas theem), thiaj li hais tias nws yuav tau txais zoo wettability ntawm cov ntaub ntawv hlau thiab zoo kawg li hardness ntawm ceramic theem, hnav tsis kam, thiab corrosion kuj. Cov cua kub ceev thiab solidification thaum lub sij hawm laser cladding txheej txheem refines cov nplej nyob rau hauv cov hlau-ceramic composite txheej thiab tusyees faib lub refractory ceramic reinforcing theem nyob rau hauv lub txheej nyob rau hauv lub binder theem, uas tsub kom lub zog txheej. , kom tau txais cov nyhuv zoo heev ntawm cov hlau thiab ceramics.
- In-situ synthesis of ceramic coatings: In-situ synthesis of ceramic coatings forms ceramic theem particles los ntawm kev ntxiv cov hmoov sib txawv nyob rau hauv high-temperature tej yam kev mob, thiab vim yog tsim ntawm cov tshuaj tiv thaiv, cov ceramic hais yuav spontaneously nucleate thiab loj hlob, yog li lub Kev faib tawm yog txawm tias tus qauv ntom, ua kom txo qis interface bonding, tawg thiab lwm yam tsis xws luag uas muaj nyob rau hauv kev sib ntxiv ntawm cov kab ntsig sib txuas.
Laser cladding ceramic coatings qhia qhov zoo tshaj plaws hauv kev hloov kho saum npoo ntawm cov khoom tshiab lossis kev rov ua dua tshiab ntawm cov khoom puas, tab sis nyob rau hauv cov txheej txheem ntawm kev npaj cov txheej txheem ceramic, kuj tseem muaj qhov tsis xws luag xws li pores, cov khoom sib cais, thiab cov kab nrib pleb. Raws li cov hauv paus ntsiab lus thiab cov yam ntxwv ntawm cov txheej txheem npaj los ntawm laser cladding, cov kws tshawb fawb yuav ua kom zoo tshaj plaws ntawm cov txheej txheem ceramic los ntawm cov txheej txheem ntawm cov txheej txheem laser cladding, txheej txheej txheej, txheej txheej txheej txheej, thiab ntau yam txheej txheem-pab tsim.
2 Daim ntawv thov kev taw qhia ntawm laser cladding ceramic txheej
Nyob rau hauv xyoo tas los no, kev lag luam xws li kev tsim tshuab, kev thauj mus los, aerospace, petrochemicals, thiab biomedicine tau muab cov kev xav tau siab dua rau kev nqa lub peev xwm thiab lub neej qaug zog ntawm workpieces. Lub hom phiaj ntawm cov teeb meem uas twb muaj lawm hauv kev ua haujlwm sib txawv, cov kws tshawb fawb siv laser cladding nto ntxiv dag zog thiab rov tsim kho tshuab los npaj cov txheej txheem ua haujlwm los daws qhov tsis ua haujlwm ntawm cov khoom ua haujlwm. Raws li kev ua haujlwm sib txawv ntawm cov khoom siv ceramic, cov txheej txheem ceramic ua haujlwm tau npaj los ntawm laser cladding tuaj yeem muab faib ua plaub hom:
- Laser cladding-resistant ceramic coatings, cov ntaub ntawv nyob rau hauv hnyav corrosion ib puag ncig (xws li offshore roj, natural gas drilling platforms, hydropower chaw nres tsheb, tshuaj nroj tsuag, mines, thiab lwm yam) yuav tsum tau ntxiv dag zog rau lub nto ntawm lub workpiece thiab remanufacture puas qhov chaw los tiv thaiv yaig. kev puas tsuaj, Corrosion-resistant coatings yuav ua rau kom lub neej kev pab cuam ntawm cov cuab yeej thiab txo nqi txij nkawm;
- Laser cladding hnav-resistant ceramic txheej, hnav yog feem ntau tsis ua hauj lwm hom ntawm ntau yam engineering cov ntaub ntawv, kev sib txhuam thiab hnav nyob rau hauv hnyav ua hauj lwm tej yam kev mob (hnyav load, siab kub, siab ceev, thiab lwm yam) yuav luv luv lub neej kev pab cuam ntawm lub workpiece. Cov kws tshawb fawb txhim kho cov tawv tawv thiab hnav tsis kam ntawm cov khoom ua haujlwm los ntawm kev npaj cov txheej txheem ceramic nrog cov khoom zoo heev los tiv thaiv kev sib txhuam, yog li ua rau lub neej ntev kev pab cuam;
- Laser cladding thermal barrier ceramic txheej, thermal barrier txheej rau clad lub siab kub resistant, oxidation resistant, thiab corrosion resistant ceramic khoom nyob rau hauv lub substrate, thiaj li mus cais lub substrate los ntawm sab nraud kub gas, yog li tiv thaiv qhov chaw ntawm Corrosion, oxidation, Thaum tshav kub kub tiv thaiv txheej los txhim kho kev ua tau zoo ntawm lub substrate thiab prolong lub neej kev pab cuam ntawm qhov chaw. Cov txheej no tau siv ntau yam kev lag luam, suav nrog cov tshuab hluav taws xob sab hauv, roj turbine hniav ntawm lub dav hlau tshuab, cov khoom siv thermochemical tom qab kho, thiab lwm yam.
3 Kev Pom Zoo
- Tsim cov khoom siv tshiab ceramic txheej. Raws li cov kev pabcuam ntawm cov cuab yeej siv tau ntau dua thiab hnyav dua, thiab cov yam ntxwv ntawm cov khoom siv ceramic thiab cov ntaub ntawv hlau sib txawv heev, nws yog ib qho tsim nyog los tsim cov txheej txheem txheej txheem tsim cov tswv yim thiab nthuav tawm cov khoom tsim thiab kev ua haujlwm pov thawj xws li thawj cov ntsiab lus suav thiab high- hla kev xeem kev ua haujlwm. txoj kev ua kom tiav cov ntaub ntawv txheej nrog ntau yam khoom zoo tib lub sijhawm, piv txwv li, kev sib xyaw ntawm MAX theem ceramics thiab hlau tuaj yeem tau hnav-resistant, kub-resistant, muaj zog thiab tawv coatings; self-lubricating high-conductivity ceramic cov ntaub ntawv thiab hafnium / zirconium ultra-high-temperature ceramics Thiab lwm yam ntaub ntawv kuj tseem ceeb heev kev loj hlob thiab daim ntawv thov nqi. Kev sib txawv ntawm cov khoom siv tshuab tuaj yeem nthuav dav nws daim ntawv thov ntau yam thiab muab kev xaiv ntau dua rau kev siv cov kev ua haujlwm sib txawv.
- Kev txhim kho ntawm cov txheej txheem laser cladding tshiab. Cov txheej txheem muaj qhov cuam tshuam tseem ceeb ntawm macroscopic morphology thiab microstructure ntawm txheej. Txawm hais tias cov txheej txheem ua ke ntawm laser cladding thiab ultrasonic kev co, electromagnetic kev pab, induction cua sov kev pab, thiab lwm yam technologies tau siv, yuav ua li cas los txo cov nto roughness ntawm txheej, txhim kho lub cladding txoj kev ua hauj lwm, txhim kho cov yam ntxwv qaug zog, thiab txhim kho qhov chaw. qhov zoo tseem tsis meej. Yuav tsum tshawb nrhiav qhov tob.