Qee zaum cov kab nrib pleb yuav tsum tau kho, tab sis muaj ntau txoj kev xaiv, peb yuav tsum xaiv ntau npaum li cas thiab xaiv cov kev xaiv zoo tshaj plaws? Qhov no tsis nyuaj li koj xav.
Tom qab tshawb xyuas cov kab nrib pleb thiab txiav txim siab kho cov hom phiaj kho, tsim lossis xaiv cov khoom siv kho kom zoo tshaj plaws thiab cov txheej txheem yooj yim heev. Cov ntsiab lus ntawm cov kev xaiv tawg Qhov kev kho mob cuam tshuam nrog cov txheej txheem hauv qab no: txhaws thiab ntim, ntim, ntxuav polyurethanes, thiab "tsis muaj kev kho".
Raws li tau piav nyob rau hauv "Ntu 1: Yuav ntsuas cov teeb meem thiab txiav txim siab cov kab nrib pleb thiab txiav txim siab cov kab nrib pleb yog tus yuam sij xaiv cov phiaj xwm kho tau zoo tshaj plaws. Hauv ntej, cov khoom tseem ceeb uas xav tau los tsim cov khoom tsim kom raug yog qhov tsawg kawg nkaus dav (suav nrog qhov tsawg kawg nkaus thiab qhov kev txiav txim siab ntawm seb cov nrawm yog nquag lossis dormant. Ntawm chav kawm, lub hom phiaj ntawm kev hloov khiav ceev yog qhov tseem ceeb raws li kev ntsuas qhov dav thiab txiav txim siab qhov ua tau ntawm kev txav mus los hauv lub neej yav tom ntej.
Cov kab nrib pleb uas nquag mus thiab loj hlob. Piv txwv suav nrog cov kab nrib pleb tshwm sim los ntawm kev txuas ntxiv hauv av lossis cov kab nrib pleb uas yog shrinkage / nthuav tawm cov tswv cuab ntawm cov tub rog lossis cov qauv. Cov kab nrib pleb dormant yog ruaj khov thiab tsis xav tias yuav hloov pauv yav tom ntej. Feem ntau, cov nrib pleb tshwm sim los ntawm cov pob zeb tawg yuav ua kom nquag plias, tab sis raws li cov av noo cov ntsiab lus ntawm cov pob zeb ruaj khov thiab nkag mus rau lub xeev dormant. Tsis tas li ntawd, yog tias muaj cov kab xev steel, cov nplais hlau, lossis cov kev sib nris tom ntej no yuav raug tswj thiab cov kab nrib pleb yuav suav nrog hauv lub xeev dormant.
Rau dormant nrib pleb, siv nruj lossis hloov cov ntaub ntawv kho tau. Nquag tawg yuav tsum tau kho cov ntaub ntawv kho tau thiab cov kev txiav txim siab tshwj xeeb tshaj plaws kom tso cai rau yav tom ntej. Kev siv cov khoom siv ntawm cov khoom siv nruj rau cov kab nrib pleb feem ntau ua rau cov khoom tawg thiab / lossis cov pob zeb nyob ib sab.
Yees duab 1. Siv Koob Yees Duab Mixers (No. 14, 15), qis-viscosity cov ntaub ntawv tsis yooj yim tsis muaj wiring kelton glex glex glex glex glex glex glex glex glex glex glex glex glex glex glex glex glex glex glex glewe, rad.
Ntawm chav kawm, nws yog ib qho tseem ceeb kom txiav txim qhov ua rau kev tawg thiab txiav txim siab seb qhov kev tawg yog qhov tseem ceeb yog kev teeb tsa. Cov kab nrib pleb uas qhia tau tias muaj peev xwm ua tau, nthuav dav, lossis kev tsim kho kev tsim kho tuaj yeem ua rau tib neeg txhawj xeeb txog lub peev xwm kev ruaj khov thiab kev nyab xeeb ntawm cov qauv. Cov kab nrib pleb no tuaj yeem yog qhov tseem ceeb. Kev tawg pleb tuaj yeem tshwm sim los ntawm lub nra, lossis nws yuav cuam tshuam nrog lub chaw ntim khoom hloov pauv, xws li qhuav qhuav thiab shrinkage, thiab tej zaum yuav lossis tsis tseem ceeb. Ua ntej xaiv kev xaiv kho, txiav txim siab qhov ua rau thiab xav txog qhov tseem ceeb ntawm kev tawg.
Kho cov kab nrib pleb tshwm sim los ntawm kev tsim qauv, kev nthuav dav tsim, thiab kev tsim kho kev tsim kho yog dhau qhov tsis yooj yim. Cov teeb meem no feem ntau yuav tsum muaj kev txheeb xyuas cov qauv qauv zoo nkauj thiab yuav xav tau kev hloov lub zog tshwj xeeb.
Rov kho cov txheej txheem ruaj khov los yog kev ncaj ncees ntawm cov pas hlau nplaum, tiv thaiv cov dej sib xyaw (xws li cov tsos muaj teeb meem loj heev yog cov hom phiaj kho tau. Xav txog cov hom phiaj no, kev txij nkawm tuaj yeem faib ua peb pawg:
Nrog rau cov muaj koob npe ntawm kev nthuav dav thiab siv pob zeb ua vaj tse, qhov kev thov kom pleev xim kho kom huv si tau nce. Qee zaum kev kho siab ncaj ncees thiab ua kom sib khi / txhaws tau tas yuav tsum tau kho. Ua ntej xaiv cov thev naus laus zis, peb yuav tsum qhia meej txog lub hom phiaj kom tawg.
Ua ntej tsim kev kho cov kab nrib pleb lossis kev xaiv cov txheej txheem kho, plaub cov lus nug tseem ceeb yuav tsum tau teb. Thaum koj teb cov lus nug no, koj tuaj yeem yooj yim xaiv kho qhov kev xaiv.
Yees duab 2. Siv cov kab xev scotch, thiab roj hmab-taub hau sib xyaw ua ke lub raj sib txuas rau hauv cov khoom nplua-kab tawg hauv qab lub siab. Kelton GLEWE, ROBE, INC.
Cov txheej txheem yooj yim no tau ua nrov, tshwj xeeb tshaj yog rau kev tsim hom kev tsim kho, vim tias kho cov khoom siv nrog cov viscscosity heev yog tam sim no muaj. Txij li cov ntaub ntawv kho tau yooj yim ntws tawm rau hauv cov kab nrib pleb heev los ntawm lub ntiajteb txawj nqus, tsis tas yuav siv hluav taws xob (piv txwv li v-puab cov khoom lag luam soob). Txij li cov kav hlau tsis tas yuav, qhov kawg kho qhov dav dav yog tib yam li cov dav dav dav, uas tsis tshua pom tseeb dua li cov pob hluav taws kub. Tsis tas li ntawd, kev siv cov hlau txhuam thiab ntxuav tu yog sai dua thiab muaj kev lag luam ntau dua li xaim.
Ua ntej, ntxuav cov kab nrib pleb kom tshem cov av thiab khib nyiab, thiab tom qab ntawd sau nrog cov khoom lag luam tsawg. Cov chaw tsim khoom tau tsim kho lub qhov loj me me sib xyaw ua ke nozzle uas txuas nrog rab phom dual-thoob txau phom rau nruab cov khoom siv (duab 1). Yog hais tias lub nozzzzzle taub loj dua li qhov dav dav, qee qhov kev coj ua yuav xav tau los tsim lub npoo funnel kom haum raws li qhov loj ntawm nozzle taub. Txheeb xyuas lub viscosity hauv cov khw cov ntaub ntawv; Qee cov tuam ntxhab qhia kom meej qhov tsawg kawg tawg qhov dav rau cov khoom siv. Ntsuas hauv centipoise, raws li tus nqi viscosity txo qis, cov khoom ua nyias ua kom yooj yim lossis yooj yim dua rau hauv cov kab nrib pleb. Ib txoj kev yooj yim kev nqus tau yooj yim kuj tseem siv tau los txhim kho cov khoom kho (saib daim duab 2).
Diam duab 3. Kev sib khi thiab kev sib khi ua ntej txiav cov thawv ntim sealant nrog lub xwmfab lossis v-puab hniav, thiab tom qab ntawd sau nws nrog kev sib foob uas tsim nyog lossis muab tub lim. Raws li muaj nyob hauv daim duab, cov kev khiav nrawm yog ntim nrog polyurethane, thiab tom qab kho tus kheej, nws yog khawb thiab yaug nrog saum npoo. Kim Basham
Qhov no yog cov txheej txheem feem ntau rau kev kho cais tawm, zoo thiab loj tawg (duab 3). Nws yog qhov tsis-txheej txheem kev kho uas cuam tshuam nrog kev nthuav dav (xaim) thiab sau lawv nrog cov khoom siv uas tsim nyog lossis cov ntawv sau. Nyob ntawm qhov loj thiab cov duab ntawm cov khoom sib khi thiab cov khoom sib khi lossis cov siv sib tsoo, hluav taws xob tuaj yeem kho cov kab nrib pleb thiab cov kab nrib pleb dormant. Hom qauv no yog heev haum rau cov kab rov tav, tab sis kuj tseem siv tau rau qhov chaw ntsug nrog cov khoom tsis muaj ntsev.
Cov ntaub ntawv tsim kho tau xws li epoxy, polyurethane, silicone, polyurea, thiab colymer cug. Rau hauv pem teb slab, tus qauv tsim nyog yuav tsum xaiv cov khoom siv uas tsim nyog thiab tawv ncauj los yog txhav cov yam ntxwv hauv pem teb thiab kev txav mus los tom ntej. Raws li qhov yoog tau ntawm kev sib tw nce, lub zog rau cov lus qhia tawg thiab kev txav mus los, tab sis cov khoom siv thauj khoom zoo thiab tawg ntug kev ntug yuav txo qis. Raws li lub hardness nce, muab cov khoom siv lub peev xwm thiab tawg ntug kev nce ntxiv, tab sis cov kev ua kom txav chaw kom tsawg dua.
Daim duab 1. Raws li ntug dej hardness tus nqi ntawm cov khoom siv nce, lub hardness lossis txhav ntawm cov khoom nce thiab hloov tau tsawg dua. Txhawm rau tiv thaiv cov nrib pleb ntawm cov nrib pleb muaj los ntawm cov tsheb khiav tawm ntawm lub cev ntawm cov tev tawm, ib qho chaw nkaum nyuaj ntawm tsawg kawg yog 80 yuav tsum muaj. Kim Bashams nyiam kho cov ntaub ntawv nyuaj (Fillers) rau dormant cracks nyob rau hauv daim duab 1. Rau cov nrib pleb zoo dua qub, tab sis cov load-coj tus kheej lub peev xwm ntawm cov foob thiab Kev txhawb nqa qaum teb yog tsawg. Ntug dej Hardness tus nqi yog cuam tshuam nrog kev tawv (lossis yooj) ntawm cov khoom kho. Raws li ntug dej hardness nqi nce, lub hardness (txhav) ntawm cov khoom siv kho kom tsawg dua thiab hloov tau tsawg dua.
Rau nquag tawg, qhov loj me thiab cov duab thiab cov qauv zoo ntawm cov sealant yog qhov tseem ceeb li xaiv cov kev tsim nyog uas tuaj yeem hloov kho mus rau lub neej yav tom ntej. Daim foos foos yog qhov sib piv ntawm cov khoom sib npaug. Feem ntau hais lus, rau cov sealants yooj yim, daim ntawv pom zoo uas pom zoo yog 1: 2 (0.5) thiab 1: 1 (saib Daim Duab 2). Txo cov ntawv foos (los ntawm kev nce qib dav rau lub qhov tob) yuav txo qhov sib txig sib tsoo los ntawm kev tawg loj. Yog tias qhov siab tshaj plaws ntawm kev sib tw txo qis, tus nqi ntawm kev tawg pleb uas cov foob pob uas lub tshuab foob uas tuaj yeem tiv taus nce. Siv daim foos pom zoo los ntawm cov chaw tsim tshuaj paus yuav ua kom qhov siab tshaj plaws ntawm kev ncua ntawm kev sib foob yam tsis muaj kev ua tsis tiav. Yog tias xav tau, Nruab FOAM txhawb nqa cov pas nrig kom txwv qhov tob ntawm cov foob ntawm cov foob thiab pab tsim "cov ntsiab lus" elongated duab.
Kev muaj cai tau elongation ntawm kev sib foob txo qis nrog qhov nce ntawm cov duab zoo. Rau 6 nti. Tuab phaj nrog ib tug tob tob ntawm 0.020 nti. Cov duab ua kom zoo ntawm cov dej uas tsis muaj peev xwm uas tsis muaj xov xwm yog 300 (6.0 nti / 0.020 nti = 300). Qhov no piav qhia yog vim li cas cov kab nrib pleb uas tau sib tsoo nrog kev sib tsoo yooj yim yam tsis muaj lub tshuab foob pob hluav taws xob feem ntau swb. Yog tias tsis muaj cov pas dej, yog tias muaj kev hais tawm tawg, lub hom yuav nrawm dua rau lub peev xwm ntawm lub cev sib foob. Rau cov kab nrib pleb, ib txwm siv cov ntaub ntawv sib txuas nrog daim foos pom zoo los ntawm cov chaw tsim khoom lag luam Sealt.
Daim duab 2. Nce qhov dav rau qhov sib piv yuav ua rau lub tshuab hluav taws xob muaj peev xwm tiv taus lub sijhawm yav tom ntej. Siv daim foos ntawm 1: 2 (0.5) rau 1: 1 (1.0) lossis raws li cov khoom lag luam uas tau pom zoo los ntawm cov khoom lag luam tuaj yeem ua kom zoo li qhov dav dav hauv lub neej yav tom ntej. Kim Basham
Epoxy Resin txhaj nyiaj los yog Welds tawg li 0.002 nti ua ke thiab rov qab ua ke ntawm cov qhob, suav nrog lub zog thiab nruj. Hom no cuam tshuam nrog kev thov cov nplaim dej epoxy resin rau qhov chaw sib txuas ntawm kab nrib pleb, ntsug lossis nyiaj ntau dua epoxy cob (Yees duab 4).
Lub zog tensile ntawm Epoxy Resin tshaj 5,000 PSI. Vim li no, Epoxy Resin Txhaj tshuaj yog suav tias yog kev kho teeb tsa. Txawm li cas los xij, Epoxy Opin txhaj yuav tsis rov qab tsim lub zog, tsis yog nws yuav txhawb tau yooj yim vim tsim qauv lossis tsim kho. Epoxy Resin yog tsis tshua muaj siv los txhaj cov kab nrib pleb los daws cov teeb meem ntsig txog cov teeb meem kev nyab xeeb thiab cov teeb meem kev nyab xeeb.
Yees duab 4. Ua ntej txhaj epoxy cob, cov nplaim tawg yuav tsum tau them nrog tsis-sagging epoxy resin los txwv pepurized epoxy cob. Tom qab txhaj tshuaj, lub cepoxy cap raug tshem tawm los ntawm kev sib tsoo. Feem ntau, tshem lub npog yuav tawm ntawm kev ua txhaum rau kev ua txhaum rau ntawm cov pob zeb. Kim Basham
Epoxy Resin Txhaj tshuaj yog ib tug txhav, tag nrho kev ntxuav, thiab cov kab nrib pleb muaj zog dua cov pob zeb nyob sab nraud. Yog tias nquag tawg los yog tawg ua yeeb yam li shrinkage lossis expansion pob qij txha yog txhaj, lwm cov kab nrib pleb yuav tau ua los ntawm ib sab lossis deb ntawm kev kho cov kab nrib pleb. Tsuas yog txhaj cov dormant dormant nrib pleb lossis tawg nrog tus naj npawb txaus ntawm steel tuav hla dhau cov kab nrib pleb kom txwv yav tom ntej. Cov ntaub ntawv hauv qab no sau cov ntsiab lus tseem ceeb ntawm qhov kev xaiv kho no thiab lwm txoj kev kho.
Polyurethane Resin tuaj yeem siv los muab cov ntub dej thiab xau cov kab nrib pleb uas nqaim li 0.002 nti. Txoj kev xaiv kho no tsuas yog siv los tiv thaiv dej xau, suav nrog cov dej ntws tawm rau hauv cov gel gel, ntsaws cov dej xau thiab khi cov nrib pleb (duab 5). Cov txheej txheem no yuav pab kom cov dej thiab nkag mus rau hauv cov micro-tawg thiab pig ntawm cov pob zeb ua kom muaj zog nrog cov pob zeb ua kom ntub. Ib qho ntxiv, tus kho polyurethane yog hloov tau thiab tuaj yeem tiv taus yav tom ntej kev txav mus los. Txoj kev xaiv kho no yog kev kho ib qho kev kho mob tas mus li, tsim nyog rau cov kab nrib pleb lossis cov kab nrib pleb dormant.
Yees duab 5. Polyurethane txhaj tshuaj suav nrog kev ua haujlwm, teeb tsa ntawm kev txhaj tshuaj paps thiab kev txhaj tshuaj ntawm cov khoom cob. Lub resin reacts nrog noo noo hauv cov pob zeb ua kom ruaj khov thiab ua npuas dej ruaj khov, thiab txawm tias tawg. Kim Basham
Rau cov kab nrib pleb uas muaj qhov siab tshaj plaws ntawm 0.004 nti thiab 0.008 nti, qhov no yog cov txheej txheem ntuj ntawm nrib kho nyob rau hauv lub xub ntiag ntawm noo noo. Cov txheej txheem kho kom zoo yog vim muaj cov paascle tsis muaj pa los ntawm cov pa roj hmab hydroxide hauv cov pa roj carbonate hauv cov calcium carbonate rau saum npoo ntawm qhov tawg. 0.004 nti. Tom qab ob peb hnub, qhov dav dav tuaj yeem kho tau, 0.008 ntiv tes. Cov kab nrib pleb yuav kho tau nyob rau hauv ob peb lub lis piam. Yog tias cov kab nrib pleb yog cuam tshuam los ntawm dej nrawm nrawm thiab txav, kho kom zoo yuav tsis tshwm sim.
Qee zaum "tsis muaj kev kho" yog qhov kev xaiv zoo tshaj plaws. Tsis yog txhua qhov tawg yuav tsum tau kho, thiab xyuas cov kab nrib pleb yuav yog qhov kev xaiv zoo tshaj plaws. Yog tias tsim nyog, kab nrib pleb tuaj yeem kho tau tom qab.
Lub Sijhawm Post: Sep-03-2021