Txij thaum immemorial, txiv neej tau paub txog cov khoom siv fiber ntau uas tsis quav ntsej hluav taws. Nws lub npe yog asbestos (Greek asbestos - indestructible, inextinguishable). Asbestos qaum tau dhau los ua ib qho ntawm cov khoom nrov tshaj plaws los ntawm cov pob zeb no. Daim Ntawv Pov Thawj Cov Khoom Siv Niaj Hnub no ua raws li ISO 9001: 2008 tus qauv. Lawv nquag siv hauv kev lag luam, vaj tse thiab kev pabcuam hauv zej zog, thaum tso cov cua sov sib txuas.
Asbestos fibers, zoo ib yam li cov xov paj, yog twisted rau hauv cov pob, diluted nrog paj rwb los yog viscose. Cov khoom zoo, qhov loj me, txoj kev xaws thiab cov ntxhia hauv cov ntsiab lus sib txawv. Tus qauv tsim ntawm txoj hlua kuj muaj qhov sib txawv: nrog thiab tsis muaj lub hauv paus. Lub peev xwm ntawm kev ua haujlwm ntawm cov khoom no tuaj yeem yog cov xov xwm xws li chav dej, roj lossis dej. Feem ntau yog cov asbestos qaum SHAON (GOST 1779-73). Tom ntej no, peb yuav tham txog ntau yam ntawm cov khoom.
Asbestos cords rau kev siv dav
Cov khoom muaj xws li chrysotile asbestos fibers nrog impurities ntawm paj rwb thiab lwm yam tshuaj fibers. Nws yog siv los ua sealant thiab thermal rwb thaiv tsev ntawm ntau yam sib txuas hauv thermal units. Asbestos cords ntawm hom no muaj kev tiv thaiv zoo rau kev co, yuav tsum tsis txhobmuaj kev tawg lossis pob khoom ntawm cov xov, nrog rau yuav tiv taus kev khoov.
Asbestos downy cords
Asbestos threads, carded thiab woven nrog hluavtaws los yog paj rwb xov, sawv cev rau lub hauv paus ntawm lub qaum no. Sab nraud, nws yog braided nrog asbestos yarn. ShAPs yog siv nyob rau hauv lub thermal rwb thaiv tsev ntawm ntau lub thermal units thiab cov kav dej kub uas muaj qhov siab tshaj plaws ntawm 400˚ Celsius ntawm kev khiav hauj lwm siab ntawm 0.1 MPa.
Asbestos gas generator cords
Lub hauv paus ntawm txoj hlua no yog tsim los ntawm cov hlua asbestos ntawm SHAON hom folded ua ke, braided nrog hlau hlau. Nws yog siv nyob rau hauv ib puag ncig nrog lub xub ntiag ntawm gases rau sealing hatches thiab roj generators. Qhov siab tshaj plaws ua haujlwm kub yog nyob rau hauv 400 ° C ntawm qhov siab tshaj plaws ntawm 0.15 MPa.
Asbestos sealing cords
Raws li lub hauv paus ntawm txoj hlua no, asbestos cords ntawm ShAP hom folded ob peb zaug nrog rau sab nraud braiding ntawm asbestos threads yog siv. Nws cov kev khiav hauj lwm tsis sib xws rau lwm hom. Qhov sib txawv tseem ceeb yog qhov siab tshaj plaws qaum qhov ntev. Nws tau pom nws daim ntawv thov tseem ceeb hauv kev sib khi ntawm lub qhov rooj thav duab, tshuab qhov chaw, thiab cov cuab yeej ntawm coke cub.
Cov hlua kub-tiv taus muaj asbestos
Rau cov hlua no, asbestos fiber ntau yog siv nrog qee qhov sib xyaw ntawm paj rwb. Sab nrauv braid yog ua los ntawm iav xov nrog ntxiv ntawm paj rwb fibers. Dav siv nyob rau hauv enveloping rwb thaiv tsev, raws li zoo raws li nyob rau hauv lub tshav pobthermal rwb thaiv tsev ntawm qhov chaw kub, cov kav dej. Tso cai hygroscopicity - 4%.
Asbestos yog ib qho ntawm cov carcinogens txaus ntshai tshaj plaws. Qhov tseeb yog tias nws cov microscopic fibers tsis tau tawm ntawm lub cev. Lawv yooj yim delaminate thiab tsim ib qho aerosol suspension nyob rau hauv cov huab cua. Cov neeg uas niaj hnub tuaj rau hauv cov khoom no thiab tsis ua raws li kev tiv thaiv kev nyab xeeb tuaj yeem tsim asbestosis lossis pulmonary fibrosis thaum lub sijhawm. Qhov txaus ntshai tshaj plaws yog cov khoom tsim los ntawm amphibole asbestos. Txawm li cas los xij, asbestos cords, uas yog ua los ntawm cov khoom siv chrysolite, muaj kev nyab xeeb rau kev noj qab haus huv.
