Hmoov silicon carbide ntsuab: riam phom zais cia los txhim kho kev ua haujlwm polishing
Thaum ob teev sawv ntxov, Lao Zhou los ntawm lub rooj sib tham xov tooj ntawm tes tau muab lub hau iav uas nyuam qhuav tawm ntawm kab ntau lawm pov rau ntawm lub rooj tshuaj xyuas, thiab lub suab nrov zoo li ua rau muaj hluav taws kub. "Saib! Nws yog pawg kaum! Txiv kab ntxwv tev thiab pos huab. Cov neeg tshuaj xyuas Apple yuav tuaj txog tag kis. Qhov no puas tuaj yeem xa tuaj?!" Cov ntshav hauv nws lub qhov muag liab dua li lub teeb qhia ntawm lub tshuab. Li, uas ntsiag to hauv lub ces kaum, maj mam thawb lub thoob hmoov ntsuab tsaus nti rau saum, "Sim tus 'neeg vwm ntsuab' no, nws yog qhov zoo siab tshaj plaws los zom cov pob txha tawv." Peb hnub tom qab, thawj pawg ntawm cov khoom tsim nyog tau raug thauj mus rau hauv huab cua thaum hmo ntuj. Lao Zhou tau kov lub thoob ntawmhmoov ntsuabthiab luag ntxhi: "Tus me nyuam tub no uas chim siab heev yeej cawm tau neeg txoj sia!" Hauv kev sib ntaus sib tua ntawm kev txhuam, uas yog kev sib tw tawm tsam lub sijhawm,hmoov silicon carbide ntsuab (SiC)yog ib yam tshuaj muaj zog thiab zoo uas kho txhua yam "tsis muaj peev xwm sib tsoo" thiab "tsis muaj peev xwm txhuam".
Hmoov silicon carbide ntsuab, hu ua ""cov pa roj carbon ntsuab" lossis "GC""hauv ntiaj teb. Nws tsis yog xuab zeb ib txwm muaj, tab sis yog ib tug txiv neej tawv "ua kom zoo" hauv lub cub hluav taws xob arc ntau dua 2000 degrees nrog cov ntaub ntawv xws li xuab zeb quartz thiab roj av coke. Nws muaj lub cev zoo: Mohs hardness yog siab li 9.2-9.3. Nws yog me ntsis tawv dua li nws "dawb corundum tus npawg" thiab thib ob tsuas yog pob zeb diamond. Qhov zoo tshaj plaws yog nws "khaub ncaws ntsuab" - cov siv lead ua silicon carbide ntshiab heev, nrog cov npoo ntse thiab cov ces kaum, thiab lub siab ceev thiab npau taws. Yog tias corundum dawb yog tus "scraping master" uas nyob twj ywm, cessilicon carbide ntsuabyog "tus thawj coj rhuav tshem" tuav lub pob zeb me me, tshwj xeeb hauv kev tom cov pob txha tawv, thiab nws qhov ua tau zoo yog qhov zoo kawg nkaus.
Nws tus nqi yog nyob rau hauv lub siab ntawm "ceev, raug, thiab tsis muaj kev siab phem":
1. Tom cov pob txha tawv: tshwj xeeb hauv txhua yam kev tsis mloog lus
Cov iav xov tooj ntawm tes (Corning Gorilla), daim iav saib sapphire, cov wafer silicon siv lead ua ib leeg, cov khoom siv ceramic ... Cov "ntsej muag projects" ntawm kev lag luam niaj hnub no nyuaj dua thiab tawg yooj yim dua li ib leeg. Cov abrasives ib txwm yuav tsis ua haujlwm lossis tawg cov npoo yog tias siv zog ntau dhau. Cov npoo ntse ntawm cov hmoov silicon carbide ntsuab (zoo li ntau lub chisels me me ntawm qib microscopic), ua ke nrog nws tus kheej qhov nyuaj siab, tso cai rau nws "txiav" qhov chaw ntawm cov khoom tawv thiab brittle hnyav thiab ruaj khov. Nws tuaj yeem tev cov khoom sai sai, es tsis txhob "plowing" nws zoo li qee cov abrasives kom ua rau puas tsuaj tob. Polishing lub hau ntawm lub xov tooj ntawm tes? Nws tuaj yeem ua kom cov "roob" ntawm qhov chaw iav sai sai yam tsis muaj kev koom nrog "hav" nyob ib sab ntawm nws, ob npaug ntawm kev ua haujlwm ncaj qha, thiab cov qauv txiv kab ntxwv tev tawv? Tsis yog!
2. Txiav "riam ceev": lub sijhawm yog nyiaj txiag
Ntawm kab tsim khoom ntawm TFT-LCD kua siv lead ua vaj huam sib luag, txhua ob ntawm kev sib tsoo ntug thiab polishing ntawm lub iav loj substrate yog cuam tshuam nrog lub peev xwm tsim khoom. Lub "ceev" ntawm cov hmoov silicon carbide ntsuab yog engraved hauv nws cov noob. Nws cov khoom me me tsis yog tsuas yog tawv thiab ntse, tab sis kuj xav tsis thoob tias nws tus kheej-sharpening - cov khoom me me yuav tawg lawv tus kheej nyob rau hauv kev nyuaj siab, qhia cov ntug ntse tshiab kom txuas ntxiv sib ntaus! Tsis zoo li qee cov abrasives mos, lawv dhau los ua "du" thaum sib tsoo, thiab lawv cov txiaj ntsig plummets. Lub peev xwm "tus kheej-renewal" no tso cai rau nws zoo li ntses hauv dej hauv cov theem polishing ntxhib thiab nruab nrab, thiab nws cov khoom tshem tawm tus nqi ib chav tsev lub sijhawm (MRR) yog deb ua ntej nws cov neeg sib tw. Tom qab lub Hoobkas photovoltaic silicon wafer hloov mus rau ntsuab silicon carbide slurry nrog ib qho me me tshwj xeeb, qhov ua tau zoo ntawm silicon wafer ntug tshem tawm nce 35%, thiab lub peev xwm tsim khoom txhua hnub ntawm ib kab tau raug squeezed tawm los ntawm ntau pua daim - nyob rau hauv lub caij teeb tsa maj, qhov no yog nyiaj tiag tiag!
3. "Zoo" hauv qhov ntxhib: qhov sib npaug ntawm kev ua haujlwm zoo thiab kev ua kom raug
Tsis txhob xav li ntawd "cov neeg vwm ntsuab"tsuas yog ua tsis tau zoo xwb. Hauv qhov kev ua kom pom tseeb ntawm sapphire qhov rai polishing, xaiv qhov loj me ntawm cov khoom me me (xws li W7, W5 lossis txawm tias zoo dua tom qab qib zoo) thiab cov mis ntawm cov hmoov silicon carbide ntsuab qhia "qhov zoo nkauj hauv qab roughness". Nws tuaj yeem tshem tawm cov khawb tob thiab cov txheej txheem puas tsuaj hauv qab uas tshuav los ntawm cov txheej txheem dhau los (xws li kev sib tsoo pob zeb diamond), tso lub hauv paus zoo thiab tshem tawm cov teeb meem rau kev ua kom zoo tom ntej (xws li siv silica sol). Lub luag haujlwm "txuas yav dhau los thiab tom ntej" no yog qhov tseem ceeb. Yog tsis muaj nws los tshem tawm cov "kev raug mob hnyav", cov kauj ruam ua kom zoo yuav siv sijhawm ntev heev, thiab tus nqi tsim tawm yuav nyuaj rau lav. Qhov no zoo li kev tsim lub tsev. Cov silicon carbide ntsuab yog "tus kws ua haujlwm txawj" uas sai thiab yooj yim tso lub hauv paus thiab tsim cov phab ntsa thauj khoom. Yog tsis muaj nws, "kev ua haujlwm zoo" ntawm kev nplaum cov ntawv ci kub tom qab yuav tsis muaj txiaj ntsig.
4. Ua si nrog "dej sib tsoo": kev ruaj khov yog txoj hauv kev kom kav ntev
Cov hmoov silicon carbide ntsuab muaj cov tshuaj lom neeg ruaj khov (inert) thiab tsis yooj yim rau kev cuam tshuam nrog cov kua dej lossis roj uas siv ntau. Qhov no txhais li cas? Cov slurry muaj kev ruaj khov zoo thiab tsis yooj yim rau kev puas tsuaj, daws lossis agglomerate! Ntawm kab polishing nrog qib siab ntawm automation, kev ua haujlwm slurry ruaj khov yog txoj sia. Xav txog nws, yog tias cov abrasive qee zaum tuab thiab qee zaum nyias, thiab cov khoom me me sib sau ua ke los thaiv cov kav dej, qhov txiaj ntsig thiab cov nqi kho khoom siv yuav phem npaum li cas?Cov Pa Roj Ntsuab"Ua rau tib neeg tsis txhawj xeeb. Cov slurry uas tau npaj tseg tuaj yeem khiav tau ib lub sijhawm lossis ntev dua, txo qhov ntau ntawm kev kaw kom kho cov kev teeb tsa thiab ntxuav cov kav dej. Lao Wu, tus thawj saib xyuas kev tsim khoom ntawm lub Hoobkas ua kom muaj kev sib txhuam ceramic, hais nrog kev xav: "Txij li thaum cov slurry ntsuab silicon carbide ruaj khov tau hloov pauv, kuv thaum kawg tuaj yeem zaum thiab haus tshuaj yej kub thaum lub sijhawm tshuaj xyuas hmo ntuj. Nws zoo li tua hluav taws!"
Nyob rau lub caij nyoog no ntawm kev nrhiav kev du thiab ua haujlwm tau zoo,hmoov silicon carbide ntsuabtau siv nws lub zog "siab tawv" los txiav nws lub npe zoo thiab txhim khu kev qha tom qab ntau qhov chaw zoo li daim iav du - nws tsis yog lub luag haujlwm mos mos, tab sis yog "riam phom zais cia" uas tsim nyog los txhim kho kev ua haujlwm polishing.