Txhua tus neeg uas tau ua haujlwm hauv lub chaw ua haujlwm xuab zeb paub tias kev xaiv cov khoom siv abrasive zoo li tus kws kho mob Suav tshuaj ntsuab - nws yuav tsum tau xav txog zoo thiab phim cov khoom siv abrasive rau txoj haujlwm tshwj xeeb. Dawb fused alumina, nrog nws qhov nyuaj thiab toughness siab, yog "tus neeg ua si hnub qub" hauv ntiaj teb xuab zeb. Txawm li cas los xij, koj yuav tsis paub tias txawm tias nyob hauv cov khoom siv abrasives dawb fused alumina, cov grit loj sib txawv tsim cov txiaj ntsig sib txawv heev. Niaj hnub no, cia peb tham txog qhov no zoo li yooj yim tab sis qhov tseeb nyuaj heev ntawm kev faib tawm qhov loj ntawm grit.
I. "Nplua, Nruab Nrab, thiab Zoo": Lub Txheej Txheem Peb-Tiered yooj yim
Cov kws tshaj lij sandblasting feem ntau faibdawb fused aluminaCov khoom siv abrasives muab faib ua peb pawg tseem ceeb: ntxhib, nruab nrab, thiab zoo. Qhov kev faib tawm no zoo li yooj yim, tab sis nws muaj ntau xyoo ntawm kev paub dhau los. Cov xuab zeb ntxhib feem ntau yog hais txog qhov ntau ntawm 20 mesh txog 60 mesh. Qhov ntawd txhais li cas? Nws txhais tau tias lub cheeb ntawm cov khoom me me yog kwv yees li ntawm 0.85 millimeters thiab 0.25 millimeters. Yog tias koj tuav ib txhais tes, koj tuaj yeem hnov cov qauv granular. Hom abrasive no muaj lub zog cuam tshuam muaj zog thiab tsim nyog rau "kev ua haujlwm hnyav". Piv txwv li, kev ntxuav cov castings loj: qhov chaw ntawm casting tom qab nchuav yog npog nrog ib txheej ntawm molding xuab zeb thiab oxide nplai, uas yog qhov nyuaj heev thiab xav tau qhov cuam tshuam muaj zog ntawm cov xuab zeb ntxhib. Old Zhang hauv peb lub Hoobkas feem ntau hais tias, "Txhawm rau daws cov chaw 'tawv ncauj', koj yuav tsum siv cov xuab zeb ntxhib, ib yam li siv cov ntaub qhwv hlau los txhuam lub lauj kaub."
Cov xuab zeb nruab nrab yog nruab nrab ntawm 80 mesh thiab 180 mesh (0.18 millimeters txog 0.08 millimeters), thiab nws yog qhov feem ntau siv "txhua yam." Hu nws "nruab nrab" tsis yog hais txog nws qhov loj me ntawm cov xuab zeb nruab nrab xwb tab sis kuj yog nws qhov siv tau nruab nrab. Nws tsis yog "ua phem" li cov xuab zeb ntxhib lossis "mos mos" li cov xuab zeb zoo. Rau kev kho qhov chaw ntawm cov qauv hlau, kev ntxuav vuam, thiab kev tshem tawm xeb ntawm qee qhov chaw ib txwm muaj, cov xuab zeb nruab nrab yog qhov kev xaiv zoo. Nws muab cov txiaj ntsig kho qhov chaw sib npaug, ua kom huv si yam tsis ua rau muaj qhov ntxhib ntawm qhov chaw ntau dhau. Cov xuab zeb zoo pib ntawm 220 mesh thiab mus txawm tias zoo dua. Hom abrasive no zoo heev, zoo li hmoov nplej rau qhov kov. Tsis txhob saib tsis taus nws vim nws qhov zoo; kev ua haujlwm zoo nyob ntawm nws. Rau kev ntxuav qhov chaw ntawm cov castings precision, pwm polishing, thiab kev kho qee qhov chaw zoo nkauj, xuab zeb zoo yog qhov tseem ceeb heev. Mr. Li, tus thawj coj hauv peb lub Hoobkas uas saib xyuas cov khoom precision, muaj ib lo lus nyiam: "Xuab zeb ntxhib kho tau kab mob, xuab zeb zoo nkauj." Qhov no piav qhia txog lub hauv paus ntsiab lus zoo meej.
II. Cov Qauv Qib: Ntau Tshaj Li "Kev Tshawb Xyuas" Xwb
Thaum nws los txog rau qhov kev ntsuas qib tshwj xeeb, cov neeg tsis paub yuav xav tias nws tsuas yog siv cov sieves nrog ntau qhov sib txawv mesh. Qhov ntawd yog qhov tseeb, tab sis tsis yog tag nrho. Cov qauv hauv tebchaws (GB / T) thiab cov qauv kev lag luam muaj cov cai meej, xws li cov txheej txheem ntsuas qib los ntawm F4 (coarsest) mus rau F1200 (zoo tshaj plaws). Txhua qib sib raug rau qhov sib txawv ntawm qhov loj me ntawm cov khoom me me. Txawm li cas los xij, hauv kev xyaum, cov kws tshaj lij kuj hais txog "kev sib npaug." Qhov no txhais li cas? Nws txhais tau tias cov khoom me me hauv tib lub hnab xuab zeb yuav tsum muaj qhov loj me sib npaug. Yog tias muaj ob qho tib si cov khoom me me thiab cov khoom me me, qhov cuam tshuam ntawm qhov chaw tom qab blasting yuav tsis sib xws. Xuab zeb zoo yuav tsum muaj qhov nkhaus faib qhov loj me ntawm cov khoom me me, tsis yog ib qho tiaj tus.
III. Cov Xwm Txheej Siv Tau: Qhov Loj Sib Txawv Rau Cov Haujlwm Sib Txawv
Cov xuab zeb ntxhib (20-60 mesh) feem ntau yog siv rau hauv kev lag luam hnyav. Dhau li ntawm kev ntxuav casting uas tau hais ua ntej, nws yog qhov tseem ceeb rau kev kho qhov chaw ntawm cov qauv hlau loj ua ntej pleev xim. Piv txwv li, cov choj, nkoj, thiab cov thoob dej cia khoom - cov qauv loj no raug rau cov huab cua thoob plaws hauv ib xyoos, thiab lawv cov txheej oxide saum npoo yog tuab thiab tawv. Cov xuab zeb ntxhib tuaj yeem tshem tawm cov txheej qub thiab xeb sai sai, ua rau pom cov hlau substrate. Txawm li cas los xij, nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias cov xuab zeb ntxhib muaj lub zog cuam tshuam loj, yog li nws yuav tsum tsis txhob siv rau ntawm cov hlau nyias nyias, txwv tsis pub nws tuaj yeem yooj yim deform. Peb tau kawm qhov no txoj kev nyuaj: ib zaug, peb siv cov xuab zeb 40-mesh los kho cov hlau phaj 3 hli tuab, thiab cov phaj xaus zoo li nthwv dej, yuam peb kom pov tseg thiab pib dua.
Xuab zeb nruab nrab (80-180 mesh) muaj ntau yam kev siv. Hauv kev lag luam tsheb, nws siv rau kev kho cov vaj huam sib luag ntawm lub cev tsheb ua ntej pleev xim; hauv kev lag luam lub thawv siab, rau kev ntxuav cov vuam ua ntej nrhiav qhov tsis zoo; thiab hauv kev tsim khoom siv tshuab feem ntau, rau kev ua kom qhov chaw ntxhib ntawm cov khoom. Nws tus yam ntxwv yog nws qhov ua tau ntau yam - nws muab cov txiaj ntsig zoo rau kev ntxuav thiab tsim cov qauv txuas nruab nrab (cov pob me me thiab kev nyuaj siab ntawm qhov chaw), uas yog qhov zoo rau kev nplaum txheej. Tus thawj tswj hwm tsim khoom ntawm peb lub Hoobkas siv qhov piv txwv meej: "Xuab zeb nruab nrab zoo li kev ua noj ua haus hauv tsev - tsis yog qhov zoo tshaj plaws, tab sis qhov txaus siab tshaj plaws thiab siv feem ntau."
Cov xuab zeb zoo (220 mesh thiab siab dua) yog tseg rau kev tsim khoom meej. Cov khoom siv meej hauv kev lag luam aerospace, cov khoom siv kho mob, thiab kev xuab zeb ntawm cov khoom siv hluav taws xob zoo tshaj plaws txhua yam xav tau cov xuab zeb zoo. Nws tuaj yeem tswj qhov roughness ntawm qhov chaw (Ra tus nqi) mus rau qib qis heev thaum ua tiav qhov tiav matte sib xws. Xyoo tas los, peb tau xuab zeb ib pawg ntawm cov cuab yeej phais rau lub tuam txhab khoom siv kho mob siv cov xuab zeb 320-mesh. Cov kev xav tau siab heev uas cov khoom tiav lawm yuav tsum tau kuaj xyuas hauv qab cov teeb pom kev zoo tshwj xeeb, tsis muaj qhov khawb pom lossis tsis sib xws. Liu, tus neeg saib xyuas txoj haujlwm no, tau ntxhov siab heev uas nws poob nws cov plaub hau. "Qhov no tsis yog xuab zeb blasting, qhov no yog paj ntaub," nws hais nrog luag nyav.
IV. Kev Kos Duab Xaiv Xuab Zeb: Kev Sib Xyaws Ua Ke ntawm Kev Paub thiab Kev Tshawb Fawb
Koj xaiv qhov loj ntawm cov xuab zeb kom raug li cas hauv kev xyaum? Qhov no suav nrog kev xam lej thiab kev txiav txim siab los ntawm kev paub dhau los. Ua ntej, koj yuav tsum xav txog cov khoom siv ntawm qhov workpiece. Cov khoom siv tawv dua tuaj yeem siv cov xuab zeb ntxhib dua, thaum cov khoom siv mos dua (xws litxhuasthiab tooj liab) xav tau xuab zeb zoo. Qhov thib ob, xav txog qhov tuab ntawm cov khoom ua haujlwm; cov khoom nyias nyias yuav tsum tsis txhob siv xuab zeb ntxhib. Qhov thib peb, xav txog qhov yuav tsum tau ua ntawm qhov chaw kawg. Rau cov txheej txheej, xav txog qhov tuab ntawm cov txheej txheej; rau cov hom phiaj kho kom zoo nkauj, xav txog qhov zoo nkauj. Peb lub Hoobkas lub chaw haujlwm kev ua haujlwm tau sau ib qho yooj yim mnemonic: "Tawv thiab tuab, siv ntxhib; mos thiab nyias, siv zoo; rau kev kho kom zoo nkauj, mus zoo dua; rau kev nplaum, xaiv nruab nrab-zoo." Tab sis qhov mnemonic no tsuas yog qhov pib xwb; cov haujlwm tshwj xeeb xav tau kev tshuaj xyuas tshwj xeeb. Piv txwv li, rau cov hlau tsis xeb, yog tias nws yog rau kev kho phab ntsa sab hauv ntawm cov khoom siv tshuaj lom neeg, xuab zeb nruab nrab-coarse yuav siv tau rau kev ntxuav sai; tab sis rau cov tshuab ua zaub mov, xuab zeb zoo yog qhov tsim nyog kom ntseeg tau tias yooj yim ntxuav thiab tua kab mob.
Muaj ntau lub Hoobkas tam sim no txhawb nqa "ib xuab zeb, ib qho kev qhia tshwj xeeb," uas txhais tau tias tsim kom muaj ib qhokev siv xuab zeb zoo tshaj plawsCov ntaub ntawv qhia txog qhov parameter rau txhua yam khoom, nrog rau kev xaiv qhov loj ntawm cov xuab zeb yog qhov tseem ceeb. Kev tsim cov ntaub ntawv no siv sijhawm ntau, yuav tsum tau kuaj dua, tab sis thaum tsim tiav lawm, nws yuav dhau los ua ib qho khoom muaj nqis. Cov ntaub ntawv uas peb tau tsim rau lub cav tsheb lub tog raj kheej qhia tau tias siv 100-meshxuab zeb dawb corundum, ntawm qhov siab ntawm 0.5 MPa thiab qhov deb ntawm 200 hli, qhov roughness ntawm qhov chaw ua tau raws li qhov yuav tsum tau ua kom zoo tshaj plaws. Cov ntaub ntawv no tau txais tom qab ntau tshaj peb caug qhov kev sim. V. Kev Nkag Siab Yuam Kev thiab Kev Ceev Faj Feem Ntau
Cov neeg pib tshiab feem ntau ua ntau yam yuam kev. Thawj qhov yog kev nkag siab yuam kev tias "qhov ntxhib dua qhov zoo dua," ntseeg tias cov xuab zeb ntxhib dua ntxuav sai dua. Txawm li cas los xij, cov xuab zeb ntxhib dhau heev tuaj yeem ua rau puas tsuaj rau saum npoo, yuav tsum tau kho tom qab thiab thaum kawg nkim sijhawm. Qhov thib ob yog kev sib xyaw cov xuab zeb sib txawv, uas yog qhov tsis tsim nyog ua. Txawm tias cov xuab zeb muaj tib qib lej, qhov kev faib tawm ntawm cov khoom me me yuav txawv ntawm cov pawg, ua rau cov txiaj ntsig kho qhov chaw tsis sib xws. Qhov thib peb yog kev tsis quav ntsej txog pes tsawg zaus uas cov xuab zeb tau rov ua dua tshiab. Cov xuab zeb dawb corundum tuaj yeem rov ua dua tshiab ntau zaus, tab sis nrog kev siv ntau dua, cov khoom me me maj mam ua rau cov duab puab thiab zoo dua, txo qhov ua haujlwm ntxuav. Cov kws tshaj lij paub dhau los tuaj yeem txiav txim siab seb cov xuab zeb puas xav tau hloov los ntawm lub suab thiab xim ntawm cov kwj deg xuab zeb.
Peb tus thawj coj saib xyuas kev cob qhia, Old Chang, feem ntau hais tias, "Grit zoo li cov tub rog; koj yuav tsum nkag siab txog cov yam ntxwv ntawm txhua tus tub rog kom yeej qhov kev sib ntaus sib tua." Cov lus no yooj yim, tab sis tob heev. Kev faib tawm qhov loj me ntawm cov khoom me me yuav zoo li yog ib qho yooj yim ntawm lub cev, tab sis nws txuas nrog kev paub los ntawm ntau qhov chaw, suav nrog kev tshawb fawb txog cov ntaub ntawv, kev tsim kho qhov chaw, thiab kev kho cov kua dej. Cov spectrum ntawm cov pob zeb dawb corundum, los ntawm ntxhib mus rau zoo, zoo li cov cuab yeej ua tiav. Tus kws tshaj lij tiag tiag tsis yog siv ib lossis ob lub cuab yeej xwb, tab sis tuaj yeem xaiv qhov "cuab yeej" tsim nyog tshaj plaws raws li "xwm txheej" sib txawv. Hauv lub caij nyoog no uas qhov zoo ntawm qhov chaw tseem ceeb zuj zus, kev nkag siab tob thiab kev siv cov txuj ci ntawm kev faib tawm qhov loj me ntawm cov khoom me me tau dhau los ua ib qho kev txawj ntse tseem ceeb. Nws tsis yog flashy, tab sis nws cuam tshuam rau qhov zoo ntawm cov khoom thiab lub neej. Tej zaum qhov no yog ib qho ntawm cov "yuam sij tsis pom" hauv kev tsim khoom lag luam.