Granite piv rau Cast Iron Surface Plates: Qhov twg zoo tshaj plaws rau koj lub Metrology Lab?

Ob qho tib si cov ntaub ntawv tau ua haujlwm rau kev lag luam tsim khoom rau ntau tshaj ib puas xyoo, thiab ob qho tib si muaj qhov zoo sib txawv uas ua rau lawv zoo dua hauv cov ntawv thov tshwj xeeb. Txawm hais tias granite feem ntau raug hu ua tus vaj ntxwv ntawm kev ruaj khov thiab kev ua haujlwm raug, cov hlau cam khwb cia tseem yog lub zog ua haujlwm ntawm pem teb kev lag luam. Kev nkag siab txog qhov sib txawv ntawm "Granite vs. Cast Iron" yog qhov tseem ceeb rau kev ua kom koj lub chaw kuaj mob tau nruab nrog cov cuab yeej zoo rau txoj haujlwm, sib npaug qhov xav tau rau qhov tseeb ntawm nanometer tawm tsam qhov kev ua haujlwm hnyav.

Cov phaj granite nto, feem ntau ua los ntawm cov granite dub zoo lossis diabase, tau dhau los ua tus qauv kub rau cov chaw soj nstuam metrology niaj hnub no. Qhov kev nyiam tseem ceeb ntawm granite yog nyob rau hauv nws keeb kwm geological. Cov pob zeb no tau tsim ntau lab xyoo, dhau los ntawm kev laus ntuj uas tshem tawm cov kev ntxhov siab sab hauv. Thaum tus neeg tsim khoom txiav thiab txhuam ib lub pob zeb granite, lawv ua haujlwm nrog cov khoom siv uas twb tau ua tiav qhov sib npaug ntawm qhov ntev. Qhov kev ruaj khov ntuj no txhais tau tias lub phaj granite tiv taus kev warping lossis twisting dhau sijhawm, yog tias nws tau txhawb nqa kom raug.

Ib qho ntawm cov txiaj ntsig tseem ceeb tshaj plaws ntawm granite hauv chaw kuaj mob yog nws qhov kev ruaj khov thermal. Hauv qhov ntsuas qhov tseeb, qhov kub yog tus yeeb ncuab. Cov hlau nthuav dav thiab cog lus nrog cua sov, thiab txawm tias qhov hloov pauv me ntsis hauv qhov kub ntawm lub chaw kuaj mob tuaj yeem ua rau lub phaj hlau nthuav dav txaus kom pov tseg cov kev ntsuas rhiab heev. Granite muaj cov coefficient qis heev ntawm kev nthuav dav thermal - qis dua li ntawm cov hlau cam khwb cia. Qhov no txhais tau tias yog tias qhov kub hauv koj lub chaw hloov pauv los ntawm ob peb degrees, lub phaj granite yuav tsis hloov pauv, khaws cia qhov tseeb ntawm koj cov kev nyeem ntawv. Cov cuab yeej no ua rau granite yog qhov kev xaiv zoo tshaj plaws rau cov chaw uas tswj hwm qhov kub zoo meej (qhov kub tas li) yog qhov nyuaj lossis kim.

Ntxiv mus, granite yog ib yam khoom uas tsis yog hlau, uas muaj ob qho txiaj ntsig sib txawv: nws tsis yog hlau nplaum thiab tiv thaiv xeb. Hauv ib puag ncig hauv chav kuaj uas siv cov khoom siv hluav taws xob lossis cov ntsuas hlau nplaum, lub phaj hlau cam khwb cia tuaj yeem ua rau muaj kev cuam tshuam. Granite, vim tias nws tsis muaj zog, yuav tsis xeb. Qhov no tshem tawm qhov xav tau kev siv cov roj tiv thaiv tas li uas xav tau rau cov phaj hlau. Lub phaj granite tuaj yeem khaws cia kom huv thiab qhuav, txo qhov kev pheej hmoo ntawm kev ua qias tuaj rau cov khoom uas ntsuas. Yog tias cov kua dej nchuav rau ntawm lub phaj granite, nws tuaj yeem so tawm yam tsis ntshai xeb, thaum tib qho kev nchuav rau ntawm lub phaj hlau cam khwb cia tuaj yeem ua rau muaj qhov thiab puas tsuaj mus tas li yog tias tsis kho tam sim ntawd.

Qhov tiav ntawm lub phaj granite yog lwm qhov chaw uas nws ua tau zoo tshaj plaws. Los ntawm cov txheej txheem lapping thiab polishing siab heev, granite tuaj yeem ua tiav qhov tiav zoo li daim iav uas du heev. Qhov du no txo ​​qhov kev sib txhuam rau cov cuab yeej ntsuas swb thiab ua kom ntseeg tau tias tsis muaj cov ncov me me thiab hav dej los ntes cov av lossis cov khib nyiab. Thaum lub ntsej muag granite raug ntaus lossis puas tsuaj - piv txwv li, yog tias ib qho hnyav raug poob rau ntawm nws - cov khoom siv feem ntau yuav tawg lossis tsim kev nyuaj siab. Qhov tseem ceeb, nws tsis tsim "burr" lossis ntug nce nyob ib puag ncig qhov chaw cuam tshuam. Hauv metrology, lub burr nce siab yog qhov puas tsuaj vim nws tsa lub cuab yeej ntsuas, ua rau muaj kev nyeem tsis raug thoob plaws tag nrho qhov chaw. Kev nyuaj siab hauv granite yooj yim dua rau kev cais tawm thiab feem ntau muaj kev cuam tshuam tsawg dua rau qhov tiaj tiaj ntawm thaj chaw ib puag ncig.

Txawm hais tias granite tswj hwm lub chaw kuaj mob siab, cov phaj hlau cam khwb cia tuav lawv thaj av ruaj khov hauv thaj chaw tshuaj xyuas kev lag luam, chav cuab yeej, thiab chaw tsim khoom hnyav. Lub ntsiab lus tseem ceeb rau hlau cam khwb cia yog nws qhov tawv. Hlau cam khwb cia yog cov khoom siv ductile piv rau qhov xwm txheej brittle ntawm pob zeb. Nws tuaj yeem tiv taus kev poob siab thiab kev cuam tshuam loj heev yam tsis tawg. Hauv lub chaw ua haujlwm tibneeg coob uas cov castings hnyav, weldments, lossis cov khoom hlau feem ntau muab tso rau ntawm lub rooj tshuaj xyuas, lub phaj granite yuav tawg hauv qab kev ntxhov siab. Txawm li cas los xij, lub phaj hlau cam khwb cia yuav nqus tau qhov poob siab.

Feem ntau cov neeg tsis nkag siab txog kev saib xyuas cov hlau cam khwb cia. Txawm hais tias nws yog qhov tseeb tias hlau xav tau kev tiv thaiv los ntawm xeb, lub phaj hlau cam khwb cia uas tau saib xyuas zoo tuaj yeem kav ntev ntau xyoo. Txoj kev ib txwm muaj los saib xyuas cov phaj no suav nrog kev khaws cov roj nyias nyias rau ntawm qhov chaw. Cov roj no tsis yog tsuas yog tiv thaiv xeb xwb tab sis kuj ua haujlwm ua cov roj nplua nyeem rau cov khoom txav mus los. Tsis tas li ntawd, qhov chaw ntawm lub phaj hlau cam khwb cia feem ntau yog "khawb" los ntawm tes. Cov txheej txheem tes no tsim cov qauv ntawm cov hnab me me ntawm qhov chaw. Cov hnab no tsis yog qhov tsis zoo; lawv ua haujlwm tau zoo. Lawv ua haujlwm ua cov chaw khaws roj thiab ntes cov hmoov av me me lossis cov swarf uas yuav muaj, tiv thaiv nws los ntawm kev cuam tshuam nrog kev ntsuas. Qhov kev ua "wringing" no tso cai rau hom kev tawm tswv yim tactile tshwj xeeb uas ntau tus kws kho tshuab thiab cov neeg soj ntsuam qub nyiam.

Lwm qhov zoo ntawm cov hlau cam khwb cia yog nws txoj kev kho tau. Yog tias lub phaj hlau cam khwb cia puas lawm, nws tuaj yeem rov khawb dua lossis sib tsoo dua kom rov qab tau nws qhov tseeb qub. Qhov no yog kev lag luam txawj, tab sis nws tso cai rau lub phaj puas tsuaj kom rov qab muaj sia nyob, ua rau nws lub neej rov qab zoo li qub. Qhov sib txawv, thaum granite tuaj yeem rov ua dua tshiab, cov txheej txheem txawv thiab feem ntau xav tau cov khoom siv tshwj xeeb los rov ua kom lub pob zeb zoo li qub. Rau ntau tus neeg siv khoom lag luam, lub peev xwm tsuas yog khawb lub phaj rov qab mus rau qhov tiaj tus hauv tsev lossis hauv zos yog qhov zoo dua ntawm kev thauj mus los.

Tus nqi kuj yog ib qho tseem ceeb. Feem ntau, cov phaj hlau cam khwb cia pheej yig dua li lawv cov granite counterparts, tshwj xeeb tshaj yog rau cov loj heev. Txawm hais tias muaj cov granite blocks loj, tus nqi ntawm kev nrhiav thiab tshuab cov pob zeb loj, tsis muaj qhov tsis zoo tuaj yeem ua rau muaj kev txwv. Cov hlau cam khwb cia tuaj yeem raug pov rau hauv cov duab loj, nyuaj, suav nrog cov uas muaj T-slots, uas yog qhov tseem ceeb rau kev clamping down cov workpieces loj. Qhov kev hloov pauv no ua rau cov hlau cam khwb cia yog qhov kev xaiv zoo tshaj plaws rau kev sib dhos thiab vuam cov khoom siv, qhov twg lub phaj ua haujlwm ua lub rooj ua haujlwm ntau npaum li lub cuab yeej ntsuas.

Thaum txiav txim siab ntawm granite thiab cam khwb cia hlau rau koj lub chaw kuaj metrology, koj yuav tsum saib dhau cov khoom siv nws tus kheej thiab xav txog daim ntawv thov. Yog tias koj qhov kev txhawj xeeb tseem ceeb yog qhov tseeb siab heev - xws li hauv chav kuaj calibration, chav CMM, lossis chaw kuaj xyuas qhov muag - granite yuav luag yog qhov kev xaiv zoo tshaj plaws. Nws txoj kev tiv thaiv rau kev hloov pauv kub, tsis muaj kev cuam tshuam magnetic, thiab kev xav tau kev saib xyuas tsawg tsim kom muaj ib puag ncig ruaj khov rau cov cuab yeej rhiab heev. Qhov tseeb tias nws tsis xeb txhais tau tias koj tuaj yeem ua haujlwm hauv chav huv si yam tsis txhawj txog cov roj av lossis cov khoom xeb uas ua rau koj cov khoom puas tsuaj.

Txawm li cas los xij, yog tias koj lub "chaw kuaj mob" yog qhov chaw tshuaj xyuas hauv pem teb hauv lub khw muag tshuab, lossis yog tias koj tab tom tshuaj xyuas cov khoom hnyav, cov hlau cam khwb cia yuav yog qhov kev daws teeb meem zoo dua. Kev pheej hmoo ntawm kev poob ib feem hlau hnyav rau ntawm lub phaj granite yog qhov kev lav phib xaub uas ntau tus thawj tswj hwm lub khw nyiam zam. Qhov ruaj khov ntawm hlau, ua ke nrog nws cov nqi pib qis dua thiab lub peev xwm kho nws los ntawm kev khawb, ua rau nws yog ib qho khoom muaj zog hauv ib puag ncig hnyav. Ntxiv mus, yog tias koj cov txheej txheem tshuaj xyuas cuam tshuam nrog ntau qhov hnyav swb lossis xav tau kev siv clamps thiab cov khoom siv, qhov xwm txheej ntawm tus kheej-lubricating ntawm qhov chaw hlau khawb thiab qhov muaj T-slots muab cov txiaj ntsig ua haujlwm uas pob zeb tsis tuaj yeem phim.

Nws kuj tsim nyog sau tseg txoj hauv kev "hybrid". Ntau lub chaw ua haujlwm siab heev siv ob qho tib si. Lawv yuav siv lub rooj hlau loj rau kev teeb tsa thawj zaug thiab kev sib dhos ntawm cov khoom hnyav, thiab tom qab ntawd tsiv qhov khoom mus rau lub phaj granite tshwj xeeb rau qhov kev ntsuas zaum kawg, siab. Cov txheej txheem ua haujlwm no ua kom muaj zog ntawm ob qho khoom siv: qhov tawv ntawm hlau rau cov haujlwm ntxhib, thiab qhov ruaj khov ntawm granite rau cov haujlwm zoo.

Thaum kawg, kev sib cav txog "Granite vs. Cast Iron" tsis yog hais txog cov khoom siv twg zoo dua, tab sis qhov twg zoo dua raukoj. Granite muaj qhov siab tshaj plaws ntawm kev ruaj khov, kev ua kom raug, thiab kev yooj yim ntawm kev saib xyuas, ua rau nws yog tus yeej tsis muaj kev sib cav ntawm lub chaw kuaj mob niaj hnub no, tswj hwm huab cua. Hlau cam khwb cia muaj kev ywj pheej, kev hloov pauv tau yooj yim, thiab kev siv nyiaj tsim nyog, ua kom nws qhov chaw ua lub hauv paus ruaj khov ntawm kev tshuaj xyuas kev lag luam. Los ntawm kev soj ntsuam koj cov xwm txheej ib puag ncig, qhov xwm txheej ntawm cov khoom koj tshuaj xyuas, thiab koj lub peev xwm saib xyuas mus sij hawm ntev, koj tuaj yeem xaiv lub phaj nto uas yuav ua lub hauv paus txhim khu kev qha tshaj plaws rau koj qhov kev pab cuam kev lees paub zoo. Txawm hais tias koj xaiv qhov ruaj khov ntuj ntawm pob zeb lossis qhov ruaj khov ntawm hlau, qhov tseem ceeb yog kev nkag siab txog lub cev tom qab cov khoom siv thiab kev hwm nws cov kev txwv.