Cov Khoom Siv Vov Tsev: Hom Thiab Cov Ntawv Thov

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Cov Khoom Siv Vov Tsev: Hom Thiab Cov Ntawv Thov
Cov Khoom Siv Vov Tsev: Hom Thiab Cov Ntawv Thov

Video: Cov Khoom Siv Vov Tsev: Hom Thiab Cov Ntawv Thov

Video: Cov Khoom Siv Vov Tsev: Hom Thiab Cov Ntawv Thov
Video: 3 HMONG TV XOVXWM | QIB CHAW KUAJ COVID-19 SIV QAUB NCAUG. 2024, Lub peb hlis ntuj
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Qhov kev thov ntawm cov khoom vov tsev ntawm cov neeg siv khoom lag luam tsis tau txo qis, txawm hais tias tsis ntev los no pom ntawm tus naj npawb ntawm cov vov tsev tshiab thiab cov khoom siv dej. Cov npe ntawm cov vov tsev cov khoom siv yog ntseeg tau los ntawm nws cov pheej yig, yooj yim ntawm kev teeb tsa thiab kev ua haujlwm zoo. Cov khoom siv vov tsev yog siv ob qho tib si rau kev ua haujlwm vov tsev thiab rau txheej txheem dej thaiv, kab teeb, cav, thiab lwm yam.

Cov khoom siv vov tsev hauv yob
Cov khoom siv vov tsev hauv yob

Kev tsim cov khoom siv vov tsev

Tsoos lub tsev tsoos xav raws li mum ntawm mumos pib pib tsim thaum pib ntawm lub xyoo pua 20th. Txij thaum ntawd los, thev naus laus zis ntawm kev tsim cov khoom vov tsev tsis tau hloov pauv: ib txheej txheej ntawm cov vov tsev cov ntawv vov yog impregnated nrog cov mos mos tsis yaj los yog tsim txoj kev nrog qhov ua kom qhov kub ntawm 34-50 degrees, thiab tom qab ntawd txheej txheej ntawm refractory bitumen nrog muag muag qhov kub kom tsawg kawg yog 80 qib yog thov rau ob sab, muaj hmoov tshuaj ntawm lub hauv paus ntxhia … Cov roj pleev cov hmoov ua raws li cov xuab zeb, limestone lossis dolomite hmoov, talc lossis gypsum yog siv los ua kom lub zog tiv tshav kub thiab noo noo tsis kam ntawm cov xim txheej. Tom qab ntawd sab qaum yog txau nrog xuab zeb lossis talcum hmoov kom tiv thaiv cov khaubncaws sab nraud povtseg los lo ua ke thaum lub sijhawm cia, thiab lub vev xaib ua kiav txhab rau hauv yob. Qhov txiaj ntsig yog qhov khoom siv txhim khu kev qha thiab ruaj khov ntawm cov ntaub thaiv dej - vov tsev zoo.

Nqa vov tsev cov khoom khij

Cov khoom siv vov tsev raws li qhov kev txiav txim siab tau muab faib ua ob sab phlu thiab vov tsev, lawv sib txawv hauv cov tuab tuab tuab tuab los ntawm cov duab los qhia thiab hnav khaub ncaws. Kev nqus dej ntawm lub ru tsev muaj kev xav zoo dua li ntawm ob sab phlu, cov duab los qhia txheej kuj yog tuab dua. Lawv tuaj yeem ua qhov sib txawv tsis yog tuab ntawm cov duab los qhia lub hauv paus thiab qhov loj ntawm cov nplej ntawm hnav, tab sis kuj nyob rau hauv tuab ntawm cov txheej xim bituminous.

Hauv kev tsim cov khoom vov tsev, hom kev tsim qauv siv hauv qab no:

1. Khoom siv: "R" - vov tsev muaj kev xav.

2. Kev Teem Caij: "K" - vov tsev, "P" - hauv ob sab phlu.

3. Hom kev hnav khaub ncaws: "K", "M", "P", "Ch" - coarse-grained, zoo-nplua-zoo, plua plav, teev.

4. Qhov ceev ntawm cardboard puag: 300, 330, 350, 400 g / m2.

Lub ntsiab hom vov tsev cov khoom siv thiab lawv daim ntawv thov

RKP-300, RKP-350 - lub vov tsev mos xav nrog cov hmoov av zoo li hnav khaub ncaws ntawm ob sab ntawm cov canvas. Nws yog siv raws li ob qho tib si txheej sab saud thiab qis ntawm lub ru tsev, zoo li lub tsev dej tsis ua haujlwm.

RPP-300 yog cov khoom siv xov mos vov tsev uas muaj cov hmoov av zoo li hnav khaub ncaws ntawm ob tog. Nws tsuas yog siv rau cov txheej hauv qab ntawm cov vuas vov tsev xwb.

RKP-350U - vov tsev zoo nkauj nrog cov tuab tuab ntawm cov xim txheej bituminous.

RKK-400 yog ib co-ntxuaj-grained vov tsev muaj kev. Nws yog siv raws li txheej txheej saum toj kawg nkaus ntawm lub ru tsev.

Ntau yam khoom siv vov tsev

Cov hom khoom vov tsev yog cov ntaub ntawv hauv qab no:

1. Glassine yog cov khoom siv yob uas tau txais los ntawm impregnating vov tsev cov ntawv los qhia nrog bitumen.

2. Daim ntawv vov vov - cardboard impregnated nrog tar nrog ntxhia cov hnav khaub ncaws ntawm ob sab.

3. Rubemast - sib txawv los ntawm cov khoom vov tsev hauv cov ntsiab lus nce ntawm bitumen sab hauv. Nws yog nteg los ntawm melting hauv qab txheej.

4. Cov iav vov tsev cov khoom siv - rubemast nrog lub fiberglass puag.

5. Euroruberoid yog hloov kho cov roj fiber ntau cov ntaub ntawv vov tsev nrog impregnation ntawm txheej sab nraud los ntawm kev sib xyaw ntawm bitumen thiab polymer additives. Nws yog thov los ntawm fusion, muaj kev pabcuam lub neej ntau dua.

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