Kev ua haujlwm ntawm cov qauv hlau thiab cov khoom feem ntau nrog rau kev cuam tshuam rau qhov chaw ua phem. Piv txwv xws li tsheb lub cev, thiab lub ru tsev decking nrog laj kab thiab txhua yam ntawm cov ncej sheathing. Kho qhov teeb meem tshwm sim los ntawm kev vuam lossis cov cuab yeej qib tsis tas yuav tsum tau ua, tab sis embedding nrog primer sib tov yuav ua tau zoo rau nws tus kheej. Thiab qhov zoo tshaj plaws, hlau putty nrog ntau yam kev tiv thaiv kev tiv thaiv yuav tiv nrog qhov haujlwm no.
Cover assignment
Putty muaj kev tiv thaiv thiab kho cov nyhuv ntawm cov hlau. Hauv kev xyaum, nws yog siv los ua ib txheej txheej nruab nrab ntawm cov qauv ntawm lub workpiece nws tus kheej thiab cov txheej txheej zoo nkauj. Nyob rau hauv qee txoj kev, qhov no yog ib lub hauv paus npaj rau cov xim zoo tib yam, tab sis tsim raunce kev tiv thaiv ntawm cov khoom siv hauv paus. Piv txwv li, kub-resistant putty rau hlau muaj peev xwm cuam tshuam cov thermal cuam tshuam ntawm ib tug kub tswj ntawm -50 … + 120 ° C, thaum tuav tswj thawj yam khoom. Raws li kev hloov kho, tus neeg sawv cev no tuaj yeem muab kev tiv thaiv corrosion, aggressive alkalis, roj av, huab cua thiab kev sib cuag nrog dej. Yog li ntawd, muaj kev sib xyaw tshwj xeeb tsom rau kev ua haujlwm hauv kev lag luam, sab nraum zoov, sab hauv tsev, hauv hluav taws xob fais fab nroj tsuag, thiab lwm yam.
Material Composition
Ib feem ntau ntawm yuav luag txhua lub putty ntawm hom no yog epoxy. Cov seem seem yog ntau hom pigments thiab hloov kho additives nrog plasticizers. Vim li no, cov coefficient ntawm cov ntsiab lus tsis-volatile yog li 90%. Cov txheej txheem tshwj xeeb ntawm cov khoom me me ntawm cov hlau putty nyob ntawm qhov kev siv. Cov no tuaj yeem yog ob qho khoom nruab nrab rau kev ua kom tsis zoo, thiab txhawb cov fibers zoo li fiberglass suav nrog uas txhim kho lub cev lub zog. Qee zaum cov ntsiab lus ntxiv tau qhia twb nyob rau hauv cov txheej txheem ntawm kev npaj cov tshuaj. Cov no suav nrog chalk lossis kaolin, uas ua rau kom tawv tawv sai thiab ziab ntawm qhov sib tov.
Ntau yam kev pab
hom muab tub lim siv yog qhov tseem ceeb rau kev ua haujlwm thiab kev ua haujlwm zoo ntawm putty. Raws li qhov ntsuas no, cov hauv qab no ntawm cov khoom tseem ceeb yog qhov txawv:
- Zoomuab tub lim. Muab cov nyhuv ilv smoothing, masking microscopic pores thiab tsim ib tug du nto. Qhov no yog qhov zoo tshaj plaws hlau putty rau tsheb, uas kuj siv tau los ua topcoat.
- Lub hauv paus. Kuj yog ib hom nplua-grained putty, tab sis tsis muaj cov nyhuv zoo nkauj. Haum rau kev ua haujlwm nrog me me khawb, chips thiab tawg. Ib qho tshwj xeeb ntawm qhov muaj pes tsawg leeg tuaj yeem hu ua qhov loj me me, uas yuav luag tsis cuam tshuam rau cov yam ntxwv ntawm cov blanks.
- Npaj muab tub lim. Nyob rau hauv cov ntaub ntawv no, qhov tseem ceeb tsis yog nyob rau theem los yog npaj qhov chaw rau qhov kawg xov, tab sis nyob rau hauv lub ntxhib kho qhov tsis xws luag nyob rau saum npoo. Nyob rau hauv essence, qhov no yog ib tug primer muaj pes tsawg leeg, tom qab uas sib tsoo yog ua. Coarse-grained putties yog tus cwj pwm los ntawm lub zog siab thiab feem ntau cov neeg kho tshuab tsis kam.
- Txhob puag. Txawm tias ntau hnav-resistant muaj pes tsawg leeg, vim qhov kev puas tsuaj loj nrog los ntawm qhov raug tshem tawm. Tsuas yog cov khoom sib xyaw no muaj fiberglass thiab hlau hmoov.
Npaj qhov chaw rau kev thov putty
Cov xwm txheej ua haujlwm thiab lub hom phiaj ntawm qhov chaw yuav txawv nyob ntawm tus yam ntxwv ntawm cov qauv tsim tshwj xeeb. Piv txwv li, ua ntej muaj kev sib cais ntawm cov primer thiab putty nws tus kheej, uas tau siv tom qab kho qhov tsis xws luag. Niaj hnub no, cov lus nug ntawm seb nyob rau hauv dab tsi ua ntu zus thiab yuav ua li cas lub putty yog nteg, nyob rau hauv av los yog nyob rau hauv cov hlau, yog tsis tsim nyog. MuajTsuas yog ib txoj cai - qhov chaw puas ncaj qha txhawm rau txhawm rau ntxiv dag zog thiab tiv thaiv nws tuaj yeem ua tiav ncaj qha los ntawm txhua qhov sib xyaw uas muaj epoxy. Tshwj xeeb thiab cais primer nrog rau lwm yam sib tov tsis tas yuav tsum tau. Lwm qhov yog tias qhov chaw yuav tsum yog, yog tias ua tau, ntxuav los ntawm cov kab xeb, nplai, burnouts thiab av nrog cov roj stains.
Kev npaj ntawm kev sib sau
Lub hauv paus yog muab los ua ib qho kev sib xyaw qhuav hauv ntim ntawm 0.25 txog 60 kg. Thaum pib, koj yuav tsum cia siab tias yuav tsum tau noj ntawm kwv yees li 600-700 g / m2nrog tus qauv tuab txog li 1 hli. Yog tias koj npaj yuav siv rab phom pneumatic rau tshuaj tsuag, ces qhov kev noj yuav qis dua - kwv yees li 200-300 g / m 2, coj mus rau hauv tus account tias txheej tuab yog halved. Nyob rau hauv qhov piv txwv no, hlau putty yog npaj rau painting rau tsheb. Kev sib xyaw qhuav muaj ob yam, ib qho yog lub hauv paus, thiab qhov thib ob yog lub hardener. Ua ntej, lub hauv paus yog tov nrog dej uas siv lub laum kev tsim kho-sib tov ntawm qis speeds. Tom ntej no, ib lub hardener ntxiv thiab nplawm yog ua nyob rau hauv tib hom rau 10 feeb kom txog thaum ib homogeneous loj yog tsim.
Cover lay
Tom qab khaws cov sib tov ua tiav rau 20-30 feeb, lawv pib ua haujlwm. Styling tuaj yeem ua tiav nrog lub tshuab pneumatic, thiab nrog cov cuab yeej siv spatula, thiab nrog lub raj ua tiav nrog lub taub me me, yog tias peb tham txog thaj chaw me me.ua. Putty yog siv rau liab qab hlau nyob rau hauv vaj huam sib luag txheej nyob rau hauv tag nrho cov cheeb tsam thiab tam sim ntawd leveled. Txhawm rau faib cov huab hwm coj mus thoob plaws hauv lub xaib, nws tsim nyog siv txoj cai plaster. Tsis tas li ntawd, tsis txhob hnov qab tias qhov sib tov, vim lub peculiarities ntawm daim ntawv qhia, tsis khaws plasticity rau ntev, yog li kev ua haujlwm yuav tsum tau ua kom sai li sai tau. Raws li cov lus qhia, qhov kev muaj peev xwm ntawm cov khoom sib xyaw ua ke thaum siv lub spatula yog 1-1.5 teev, thiab thaum ua haujlwm nrog rab phom txau - txog li 6 teev tom qab polymerization, cov txheej txheej txheej thiab muab faib yog polished nrog nplua abrasives. Txhawm rau ua qhov no, nws raug nquahu kom siv lub grinder nrog lub log muaj zog. Tom qab ntawd koj tuaj yeem mus rau cov xim zoo nkauj thiab cov kua roj vanish.
Yuav tsum xav txog dab tsi thaum siv cov khoom?
Cov kws tshaj lij qhia ua ntej txhawm rau tsom mus rau ib puag ncig zoo. Nws yog qhov zoo tshaj plaws los ua haujlwm ntawm qhov av noo tsis tshaj 80% thiab qhov kub tsis qis dua +5 ° C. Yog tias cov khoom siv tom qab kev npaj tau dhau los ua kom khov thiab ua rau muaj teeb meem thaum siv (tshwj xeeb tshaj yog rau cov tshuaj tsuag), ces nws tsim nyog siv cov kuab tshuaj tshwj xeeb rau cov hlau putty - txhais tau tias qib R-4 thiab R-5A. Tsis txhob hnov qab txog cov tshuaj active tshuaj nyob rau hauv lub composition ntawm putty. Nws yuav tsis yog superfluous los siv cov cuab yeej tiv thaiv tus kheej thoob plaws tag nrho cov haujlwm.
Zoo kawg
Lub luag haujlwm ntawm kev tiv thaiv cov hlau nplaum los ntawm ntau yam kev hem thawj tau ntev tau txais los ntawm cov xim pleev xim. Lawv kuj tiv thaiv cov khoom siv los ntawm lub teeb txhua yamcuam tshuam, thiab los ntawm cov txheej txheem corrosive. Tab sis nyob rau hauv cov xwm txheej ntawm kev ua haujlwm ntawm cov khoom siv nyob rau hauv ib puag ncig hnyav thiab coj mus rau hauv tus account qhov kev puas tsuaj uas twb muaj lawm, qhov kev daws teeb meem zoo tshaj plaws yuav yog kev siv cov putty rau hlau, uas muaj kev kho thiab kho cov nyhuv. Nws lub ntsiab kom zoo dua yog tias nws tsis pub foci uas twb muaj lawm ntawm kev puas tsuaj mus txuas ntxiv kev puas tsuaj ntawm cov qauv los ntawm sab hauv. Tsis tas li ntawd, cov khoom tiv thaiv ntawm ntau epoxy-raws li primers outperform lwm txheej txheej.
