Granite tau txais feem ntau ntawm cov xim nyob rau hauv ultra precision tshuab tsim, tab sis ib tug zuj zus feem ntawm kev ua tau zoo nyob rau hauv niaj hnub semiconductor thiab metrology khoom los ntawm engineering ceramics. Qhov twg tus tsim xav tau hluav taws xob rwb thaiv tsev, hnyav hnav tsis kam, siab nruj ntawm qhov hnyav qis, lossis kev ruaj ntseg nyob rau hauv thermal shock, ceramics siab heev outperform hlau thiab feem ntau outperform granite hauv lub luag hauj lwm tshwj xeeb. Cov cuab yeej tsim khoom uas twb tau tsim los ntawm cov hauv paus granite nce ntxiv cov txheej txheem ceramic, cov lus qhia thiab cov kabmob rau saum lawv. Kab lus no muab piv rau peb cov khoom siv ua haujlwm, alumina, silicon carbide thiab silicon nitride, qhia qhov twg txhua tus tau txais nws qhov chaw, thiab piav qhia txog cov khoom siv hluav taws xob raug tsim los ntawm lawv, nrog cov lus qhia ua haujlwm ntawm kev xaj cov khoom siv rau kev kos duab.
Peb cov khoom, Peb lub zog sib txawv
Tsis muaj ceramic yog qhov zoo tshaj plaws ntawm txhua yam, thiab thawj qhov kev txiav txim siab engineering yog txuam cov khoom siv rau lub luag haujlwm. Qhov kev sib piv hauv qab no qhia txog qhov peb hom qauv ceramics txawv li cas hauv kev xyaum. Cov nqi sib txawv raws qib thiab cov chaw tsim khoom, yog li kho lub rooj raws li cov lus qhia xaiv es tsis yog cov ntaub ntawv.
| Khoom | Alumina (Al2O3) | Silicon Carbide (SiC) | Silicon Nitride (Si3N4) |
| Standout zog | Hluav taws xob rwb thaiv tsev, hnav tsis kam, nqi efficiency | Qhov siab tshaj plaws nruj thiab thermal conductivity ntawm peb | Siab tshaj toughness thiab thermal shock kuj |
| txheeb ze ntom ntom | qis dua SiC | Siab tshaj ntawm peb | Nruab nrab |
| Fracture toughness | Nruab nrab | Nruab nrab | Siab tshaj |
| Thermal expansion | Nruab nrab, ze rau hlau | Tsawg tshaj plaws, ze rau granite | Nruab nrab |
| Tus nqi txheeb ze | qis tshaj | Siab tshaj | Siab |
Alumina yog qhov kev xaiv zoo tshaj plaws thiab npog cov kev siv dav tshaj plaws. Nws yog ib qho zoo heev hluav taws xob insulator, resists hnav los ntawm zawv zawg kev sib cuag thiab abrasive hais, tuav ib tug zoo lapped nto, thiab tus nqi muaj nqis tsawg tshaj li ob lub ceramics. Rau insulating spacers, hnav pads, gauging nto thiab feem ntau structural qhov chaw, alumina feem ntau yog thawj cov lus teb. Nws thermal expansion yog nruab nrab siab dua SiC, yog li hauv cov khoom sib xyaw ua ke lub interface yuav tsum tau tsim nrog qhov sib txawv hauv siab.
Silicon carbide tau teev tseg thaum nruj thiab thermal tus cwj pwm dominate. Nws cov elastic modulus yog qhov siab tshaj plaws ntawm cov khoom siv engineering, uas txhais tau hais tias SiC ib feem deflects tsawg dua nyob rau hauv tib lub load, los yog ncav cuag tib lub zog ntawm qhov hnyav. Nws cov thermal conductivity yog siab rau cov ceramic thaum nws nthuav dav tsawg heev, yog li SiC cov khoom tuav geometry los ntawm lub zog voj voog thiab yog cov koom tes ntuj tsim rau cov qauv granite, uas lawv nthuav lawv ze ze. Cov khoom lag luam yog qhov ntom ntom dua li alumina, qis dua pob txha tawv dua li silicon nitride, thiab tus nqi siab dua los ntawm sintering thiab sib tsoo nyuaj. Cov qauv hauv daim iav, cov khoom siv huab cua rau cov theem siab nrawm thiab cov txheej txheem precision yog cov ntawv siv SiC classic.
Silicon nitride yog tus kws tshaj lij toughness. Nws muaj sia nyob thermal poob siab thiab cuam tshuam cov loads uas yuav tawg rau lwm ob lub ceramics, uas haum nws rau cov khoom siv hluav taws xob uas muaj feem xyuam nrog cov khoom siv hluav taws xob, tuav cov khoom uas pom qhov kub thiab txias hloov sai, thiab cov khoom siv uas tawg yuav puas tsuaj ntau dua li qhov tsis yooj yim. Rolling element balls ua los ntawm Si3N4 yog tus qauv hauv hybrid bearings rau tshuab cuab yeej spindles thiab precision theem. Qhov twg lub luag haujlwm lub voj voog suav nrog kev sib cuag, cuam tshuam los yog cov thermal gradients siab, SiN pom zoo nws cov nqi.
Hom Precision Ceramic Cheebtsam
Tib yam peb cov ntaub ntawv tshwm sim nyob rau hauv ib tsev neeg paub txog ntawm cov khoom nyob rau hauv semiconductor thiab metrology khoom.
Ceramic cua bearings thiab cua bearing pads yog ib qho ntawm cov kev thov tshaj plaws. Ceramic cua bearing khub qhov kev sib txhuam tsis sib haum ntawm cov yeeb yaj kiab huab cua nrog kev ruaj ntseg ntawm lub cev ceramic, thiab ceramics ntxiv ob qhov zoo: hluav taws xob rwb thaiv tsev ntawm kev txav mus los thiab ruaj khov, thiab tiv thaiv corrosion hauv chav huv. SiC thiab porous alumina qib yog siv qhov twg cov kabmob nws tus kheej tswj cov huab cua faib. Rau wafer tuav thiab soj ntsuam cov theem, ceramic cua Cheebtsam zam lub particle tiam thiab lubricant contamination uas hlau bearings tsis tuaj yeem tshem tawm tag nrho.
Ceramic qhia rau CMM thiab ntsuas tshuab yog ib tsev neeg loj thib ob. Lapped ceramic qhia rails thiab cov ntaub ntawv siv ua ke ua ke hnav tsis kam nrog cov huab hwm coj tsawg, uas txo qhov kev txav ntawm lub tsheb thauj mus los thiab tso cai rau kev ntsuas nrawm dua ntawm qhov sib npaug ntawm lub zog tsav. Daim ntawv qhia ceramic precision kuj tseem ua ntsiag to thiab ua rau nws tus yam ntxwv nto rau xyoo, vim tias tsis muaj dab tsi los xeb thiab hnav me ntsis.
Ceramic structural qhov chaw sau cov hnab ntawv uas tseem tshuav: square tubes thiab kab teeb rau lub teeb yuag thav duab, tooling plates thiab fixture ntsiab, insulating standoffs ntawm kub zones thiab precision lug, thiab brackets uas yuav tsum tsis txhob distort txoj kev ntsuas. Nyob rau hauv semiconductor chambers thiab wafer ua khoom, alumina structural qhov chaw yog tus qauv nyob qhov twg plasma, tshuaj los yog high voltage yuav tua hlau.
Ceramic ntsuas Cheebtsam ua tiav cov txheej txheem. Squares, straightedges, gauge blocks thiab siv qhov chaw ua los ntawm alumina los yog SiC pab lub chaw soj nstuam uas xav tau insulated, hnav dawb cov ntaub ntawv nrog thermal cwj pwm sib phim rau cov granite phaj lawv siv rau. Ceramic square siv rau ntawm granite nto phaj ua ib tug ze li ntawm expansion matched khub, yog li calibration tuav nyob rau hauv ib tug zoo tib yam chav tsev kub swings.
Vim li cas Pair Ceramics Nrog Granite Structures
Ntau lub tshuab tsim zoo tshaj plaws siv ob qho khoom siv uas txhua tus muaj zog tshaj plaws. Lub hauv paus granite muab qhov loj, damped, dimensionally calm foundation; ceramic Cheebtsam muab insulated, hnav dawb, hnav cov ntsiab lus nyob rau sab saum toj. SiC tshwj xeeb nthuav dav ntawm tus nqi ze rau granite, yog li ceramic inserts bonded los yog bolted rau hauv granite qauv nyob rau hauv txhua yam kev sib raug zoo raws li qhov kub thiab txias. Qhov kev sib xyaw no yog tam sim no muaj nyob rau hauv CMM architectures, wafer soj ntsuam theem thiab laser tshuab, thiab nws yog ib qho laj thawj rau xaiv ib tus neeg muag khoom uas tsim cov khoom siv ob qho tib si hauv ib lub ru tsev, vim hais tias cov kev sib tshuam tuaj yeem raug lapped thiab sib koom ua ke ntau dua li kev sib tham ntawm ob tus neeg muag khoom.
Ordering Custom Ceramic Parts rau kos duab
Precision ceramic qhov chaw yuav luag txhua zaus kev cai. kam rau ua, lapped nto, qhov thiab inserts yuav tsum tau npaj ua ntej sintering thiab sib tsoo, vim hais tias ceramics yog machined nrog pob zeb diamond tooling thiab re ua hauj lwm yog kim. Cov txheej txheem kev txiav txim zoo zoo li no: koj xa cov duab kos, zoo li STEP lossis IGES rau cov qauv khoom ntxiv nrog rau DWG lossis PDF rau kev ua siab ntev, sau ntawv thiab cov lus hais tiav; cov chaw tsim khoom tshuaj xyuas cov khoom xaiv tawm tsam lub luag haujlwm, lees paub sintering shrinkage nyiaj pub dawb thiab cov yam ntxwv zoo sib xws, thiab xa rov qab cov lus hais nrog rau kev ua siab ntev nws yuav cog lus rau thiab cov qauv tshuaj xyuas rau txhua tus. Ob lub tswv yim ua kom luv lub voj. Ua ntej, hais tias qhov chaw twg yog qhov ua tau zoo thiab qhov twg yog cov tshuaj pleev ib ce, vim tias lapping txhua lub ntsej muag thaum tsuas yog ob qho teeb meem ntau tus nqi. Thib ob, chij txhua qhov kev xav tau hluav taws xob lossis thermal kom meej meej, txij li cov khoom xaiv qib feem ntau hinges rau lawv.
Cov neeg yuav khoom qee zaum nug seb puas yog ceramics tuaj yeem ua ke nrog cov hlau ntxig rau txoj kev granite qhov chaw ua. Yog lawm, nyob rau hauv kev txwv: threaded hlau inserts tuaj yeem txuas rau hauv lub cev ceramic, thiab cov hlau los yog titanium fittings feem ntau txuas nrog cov nplaum los yog cov neeg kho tshuab tuav tsim los rau cov ceramic qis dua toughness. Kev tshuaj xyuas tus qauv tsim yuav chij qhov twg cov hlau ntxig hloov lub zog hauv zos los yog txoj hauv kev thermal, yog li nws tsim nyog xa cov kev xav tau nrog thawj daim duab.
Cov ntaub ntawv pov thawj zoo los nug
Ceramics tau teev los ntawm qib, thiab qib nrog tib lub npe tuaj yeem sib txawv ntawm cov neeg muag khoom. Ua ntej xaj, nug cov ntaub ntawv cov ntaub ntawv tom qab qhov kev tsocai, suav nrog qhov ntom ntom, lub zog flexural, elastic modulus thiab thermal expansion rau qib tiag. Rau qhov precision, thov ib daim ntawv ntsuam xyuas qhov ntev nrog qhov flatness thiab parallelism qhov tseem ceeb ntawm lapped nto ntsuas ntawm qhov ntsuas kub, thiab paub meej tias datum nta tau tuav thaum sib tsoo. Cov neeg muag khoom uas ntsuas qhov lawv xa khoom yuav muab cov ntaub ntawv no raws li tus qauv kev coj ua, thiab cov ntawv ceeb toom dhau los ua koj lub hauv paus rau kev tshuaj xyuas tuaj thiab rau yav tom ntej.
Xa koj daim duab rau ib nqe lus
Yog tias koj cov khoom xav tau alumina insulating thiab hnav cov khoom, SiC cov khoom siv los yog SiN kho vajtse rau lub luag haujlwm thermal shock, xa peb cov duab kos rau hauv STEP, IGES lossis DWG hom ua ke nrog cov dej num piav qhia: load, kub, ib puag ncig thiab qhov tseeb ntawm qhov yuav tsum tuav. Peb tsimprecision ceramic Cheebtsamnrog rau cov huab cua bearings, cov lus qhia, cov khoom siv thiab ntsuas cov ntaub ntawv, thiab peb kuj tsimsilicon carbide Cheebtsamrau cov ntawv thov nruj tshaj plaws, nrog rau cov qauv granite lawv mount rau. Peb cov engineers yuav tshuaj xyuas cov duab kos, pom zoo cov khoom qib thiab ua siab ntev, thiab xa rov qab cov lus hais nrog lub sijhawm ua haujlwm, feem ntau nyob rau ob peb hnub ua haujlwm. Kev tsim khoom rau koj daim duab yog peb cov qauv kev coj ua, thiab kev tshuaj xyuas kev kos duab yog dawb xwb.