Chikwama cha fyuluta ndiye gawo lazosefera lachikwama, ndipo mtengo wake umakhala pafupifupi 10% mpaka 15% ya mtengo wa zida. Kusankhidwa kwa thumba la fyuluta sikungokhudzana ndi kuchotsedwa kwa fumbi, komanso kumakhudza mwachindunji mtengo wa ntchito, moyo wautumiki komanso chitetezo chonse cha chilengedwe cha zipangizo. Posankha fumbi fyuluta thumba, muyenera kuganizira zinthu zingapo, kuphatikizapo kutentha ntchito, chinyezi, mpweya zikuchokera, makhalidwe fumbi ndi mmene ntchito ya wotolera fumbi.
Kutentha kwa gasi
Mpweya wabwinobwino (<130℃)
Mu chikhalidwe ichi, mukhoza kusankha yachibadwa kutentha fyuluta thumba, monga polyester singano anamva fumbi fyuluta thumba. Mtundu uwu wa thumba la fyuluta umachita bwino m'malo ogwirira ntchito Osakwana kapena ofanana ndi madigiri 130, ndipo kutentha nthawi yomweyo kumatha kufika madigiri 150. Ndi yoyenera ku zomera za simenti, migodi ya malasha, zomera zachitsulo ndi mafakitale ena.
Mpweya wotentha wapakatikati (madigiri 130 -180 digiri)
Mukhoza kusankha PPS fumbi thumba, PPS ndi PTFE blended fyuluta thumba. Matumba a PPS ali ndi mphamvu yabwino kwambiri yolimbana ndi mankhwala komanso hydrolysis resistance, ndipo ndi yoyenera kumakampani amakampani a malasha,{1}}mafakitale opangira magetsi a malasha ndi nthawi zina.
Mpweya wotentha kwambiri (180-280 digiri)
Pazigawo zogwira ntchito za kutentha kwakukulu, matumba a fyuluta a kutentha ayenera kusankhidwa.
Ultra-high temperature gas (>280 digiri)
Kutentha kwambiri-zimene zimagwira ntchito ndizofunika kwambiri pazikwama zosefera.
Chinyezi cha mpweya
Pamipweya yochuluka-yachinyezi (chinyezi chochepera 80%), ikakhala pamalo otentha kwambiri, makamaka fumbi-lokhala ndi mpweya wa SO2, kuziziritsa kwa gasi kumapangitsa kuti pakhale condensation. Izi sizidzangoyambitsa makulitsidwe ndi kutsekeka pamwamba pa thumba la fyuluta, komanso kuwononga zipangizo zamapangidwe, choncho chisamaliro chapadera chiyenera kulipidwa. M'malo okhala ndi chinyezi chambiri, thumba la fyuluta la fumbi liyenera kukhala ndi kukana kwa chinyezi kuti lipewe kukhazikika komanso dzimbiri chifukwa cha chinyezi. Mutha kusankha zida zokhala ndi chinyezi chabwino monga PPS ndi PTFE.
Kapangidwe ka gasi
Mipweya yamitundu yosiyanasiyana ya ng'anjo ndi mpweya wotayidwa wamankhwala nthawi zambiri imakhala ndi zinthu zosiyanasiyana monga ma acid, alkalis, oxidants, ndi organic solvents. Ngati pali mpweya wowononga m'malo ogwirira ntchito, muyenera kusankha zida zolimbana ndi dzimbiri, monga PTFE, PPS, etc.