Kev siv xuab zeb tua yog ib txoj haujlwm uas siv cua compressed ua lub zog los thawb cov abrasives mus rau saum npoo ntawm cov khoom ua haujlwm rau kev ua tiav. Qhov no yog qhov hu ua sandblasting, uas yog qhov peb feem ntau hu ua shot blasting. Vim tias thaum ntxov ntawm kev siv xuab zeb tua, xuab zeb yog tib qho abrasive uas tuaj yeem siv, yog li kev siv xuab zeb tua tau hu ua sand blasting thaum lub sijhawm ntawd thiab ntev tom qab ntawd. Kev siv xuab zeb tua tuaj yeem ua rau qhov chaw yuav tsum tau ntxuav tau txais qhov huv si thiab qee qhov roughness, thiab txhim kho qhov lo rau ntawm qhov chaw. Txawm tias qhov txheej zoo li cas los xij, nws tsis tuaj yeem txuas rau ntawm qhov chaw ntawm cov khoom ua haujlwm yam tsis muaj kev kho qhov chaw ntev. Lub hom phiaj ntawm kev kho qhov chaw ua ntej yog los ntxuav qhov chaw thiab tsim cov roughness uas xav tau los "xauv" qhov txheej rau ntawm qhov chaw. Tom qab qhov chaw ntawm cov khoom ua haujlwm xuab zeb tua tau coated nrog cov txheej kev lag luam zoo, lub neej ua haujlwm ntawm cov txheej yog 3.5 npaug ntev dua li lub neej ua haujlwm ntawm tib yam txheej zoo ntawm qhov chaw kho los ntawm lwm txoj hauv kev. Lwm qhov zoo ntawm kev xuab zeb (txhaj tshuaj tua kab) yog tias qhov roughness ntawm qhov chaw tuaj yeem txiav txim siab ua ntej raws li qhov yuav tsum tau ua thiab tuaj yeem ua tiav thaum lub sijhawm ntxuav.
Frosting yog, piv txwv li, ib qho txheej txheem uas ib qholub raj mis iav kom zoo nkaujua du thiab ua matte. Lub teeb ci ntsa iab rau saum npoo kom tsim cov kev cuam tshuam diffuse. Hauv kev siv tshuaj frosting, iav yog mechanically grounded lossis manually grounded nrog emery, silica xuab zeb, pomegranate hmoov thiab lwm yam abrasives los ua ib qho chaw ntxhib sib npaug, lossis iav thiab lwm yam khoom tuaj yeem kho nrog hydrofluoric acid kua los ua cov iav frosted.
Ob qho tib si frosting thiab sandblasting yog siv los npog qhov chaw iav, yog li ntawd lub teeb yuav kis tau sib npaug zos tom qab dhau los ntawm lub teeb. Nws nyuaj rau cov neeg siv ib txwm kom paub qhov txawv ntawm ob lub thev naus laus zis no. Cov hauv qab no piav qhia txog cov txheej txheem tsim khoom ntawm ob lub thev naus laus zis no thiab yuav ua li cas txheeb xyuas lawv.
1. Cov txheej txheem frosting
Frosting txhais tau hais tias muab lub iav tso rau hauv cov kua qaub uas tau npaj tseg (lossis siv cov kua qaub nplaum), ua rau lub iav nto nrog cov kua qaub muaj zog, thiab cov hydrogen fluoride ammonia hauv cov kua qaub muaj zog ua rau lub iav nto tsim cov siv lead ua. Yog li ntawd, yog tias cov txheej txheem frosting ua tiav zoo, qhov chaw ntawm lub iav frosted yog du heev, thiab cov siv lead ua tawg ua rau muaj cov teebmeem hazy. Yog tias qhov chaw yog qhov ntxhib, qhov no qhia tau hais tias cov kua qaub ua rau lub iav puas tsuaj hnyav, lossis qee qhov ntawm lawv tseem tsis muaj siv lead ua. Tus yam ntxwv ntawm cov txheej txheem no yog cov tsos ntawm cov siv lead ua ci ntsa iab ntawm lub iav nto tsim nyob rau hauv cov xwm txheej tseem ceeb. Qhov laj thawj tseem ceeb yog tias cov hydrogen fluoride ammonia yuav luag tau noj. Yuav kom ua tiav lub xeev no, ntau lub tuam txhab tsim khoom tau ua ntau yam kev sim thiab kev tshawb fawb, tab sis tsis tau kov yeej qhov teeb meem no.
2. Kev siv tshuab xuab zeb
Nws siv cov xuab zeb uas rab phom txau tawm ntawm qhov ceev ceev los ntaus lub iav nto kom ua rau lub ntsej muag tsis sib luag, yog li ua tiav cov teebmeem ntawm lub teeb tawg, thiab tsim kom muaj kev xav tsis meej thaum lub teeb hla dhau. Qhov chaw ntawm cov khoom iav tsim los ntawm cov txheej txheem xuab zeb yog ntxhib. Vim tias qhov chaw ntawm lub iav raug puas tsuaj, nws zoo li iav dawb hauv qhov kev cuam tshuam ntawm lub teeb ntawm lub iav pob tshab qub.
Ob txoj kev ua no txawv kiag li. Cov iav frosted kim dua li cov iav sandblasted, thiab qhov cuam tshuam feem ntau nyob ntawm qhov xav tau ntawm cov neeg siv. Qee cov iav tshwj xeeb tsis haum rau frosting. Los ntawm kev txiav txim siab zoo, yuav tsum xaiv matte. Cov txheej txheem sandblasting tuaj yeem ua tiav hauv cov chaw tsim khoom dav dav, tab sis cov txheej txheem sandblasting tsis yooj yim ua tau zoo.
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Lub sijhawm tshaj tawm: Lub Yim Hli-25-2021