Njira yolumikizira chitoliro chozimitsira moto: ulusi, mlatho, flange, ndi zina zotero. Chitoliro chachitsulo chamkati ndi chakunja cha epoxy chopangidwa ndi chitsulo chopangidwa ndi chitsulo chopangidwa ndi chitsulo cholimba choteteza ku dzimbiri ndi ufa wosinthika wa epoxy resin wotsutsana ndi dzimbiri, womwe uli ndi kukana kwabwino kwa mankhwala. Chimathetsa mavuto ambiri monga dzimbiri pamwamba ndi kukula kwa khoma la zinthu zofanana pambuyo pa kugwiritsidwa ntchito kwa nthawi yayitali, kuti tipewe kutsekeka kwamkati komwe kungakhudze kugwiritsa ntchito, kuti tiwongolere kwambiri moyo wa ntchito ya mapaipi apadera ozimitsa moto. Chifukwa cha kuwonjezera zinthu zoletsa moto muzophimba, kukana kutentha kwa chinthucho kumawonjezeka poyerekeza ndi zinthu zina zofanana. Chifukwa chake, sizikhudza kugwiritsa ntchito kutentha kwa malo ozungulira kukakwera kwambiri. Moyo wa ntchito ndi magwiridwe antchito a mapaipi ozimitsira moto mkati ndi kunja ndi abwino kwambiri kuposa mapaipi opangidwa ndi galvanized. Mtundu wake ndi wofiira.

Fakitale yathu imagwira ntchito popanga chitoliro chozimitsira moto, chitoliro chachitsulo cholimba, chitoliro chophimba ufa, chitoliro chophimba ufa ndi chitoliro chachitsulo cha mainchesi 6. Kugwiritsa ntchito: madzi oyaka moto, mpweya ndi njira yoyendera mapaipi a thovu. Ubwino wa malonda umadutsa kasitomu ndipo umadutsa mayeso angapo asanachoke ku fakitale. Tsatirani miyezo ya dziko lonse ndi yapadziko lonse lapansi.

(1) Makhalidwe apamwamba a makina. Utomoni wa epoxy uli ndi mgwirizano wamphamvu komanso kapangidwe kolimba ka mamolekyulu, kotero mawonekedwe ake a makina ndi apamwamba kuposa ma resini wamba a thermosetting monga phenolic resin ndi unsaturated polyester.

(2) Chophimba cha chitoliro choyaka moto chopangidwa ndi pulasitiki chimagwiritsa ntchito epoxy resin, yomwe imakhala ndi gulu lolimba. Epoxy resin curing system ili ndi gulu la epoxy, gulu la hydroxyl, bond ya ether, bond ya amine, bond ya ester ndi magulu ena a polar omwe amagwira ntchito bwino, zomwe zimapangitsa kuti zinthu zotsukidwa ndi epoxy zikhale zolimba kwambiri ku zitsulo, zoumba, galasi, konkire, matabwa ndi zinthu zina za polar.

(3) Kuchepa pang'ono kwa kuyeretsa. Kawirikawiri 1% ~ 2%. Ndi imodzi mwa mitundu yomwe imakhala ndi kuchepa kochepa kwa kuyeretsa pakati pa ma resins a thermosetting (phenolic resin ndi 8% ~ 10%; unsaturated polyester resin ndi 4% ~ 6%; silicone resin ndi 4% ~ 8%). Coefficient yowonjezereka ya mzere nayonso ndi yaying'ono kwambiri, nthawi zambiri 6 × 10-5/℃. Chifukwa chake, voliyumu imasintha pang'ono ikasungunuka.

(4) Kupangidwa bwino. Utomoni wa epoxy kwenikweni supanga mamolekyu otsika osinthika panthawi yowuma, kotero ukhoza kupangidwa pansi pa kupanikizika kochepa kapena kupsinjika kokhudzana. Ungagwirizane ndi zinthu zosiyanasiyana zowuma kuti upange zophimba zachilengedwe monga zophimba zopanda zosungunulira, zolimba kwambiri, ufa ndi zophimba zochokera m'madzi.

(5) Kuteteza magetsi bwino kwambiri. Epoxy resin ndi thermosetting resin yokhala ndi mphamvu zabwino zoletsa kutentha.

(6) Kukhazikika bwino komanso kukana mankhwala bwino. Utomoni wa epoxy wopanda alkali, mchere ndi zina zodetsa sikophweka kuwonongeka. Bola ngati wasungidwa bwino (wotsekedwa, wopanda chinyezi ndi kutentha kwambiri), nthawi yosungira ndi chaka chimodzi. Pambuyo pa tsiku lotha ntchito, ngati kuwunikako kuli koyenera, ukhoza kugwiritsidwabe ntchito. Epoxy curing compound ili ndi kukhazikika bwino kwa mankhwala. Kukana kwake dzimbiri ku alkali, asidi, mchere ndi zina zotero kuli bwino kuposa utomoni wa polyester wosaturated, phenolic resin ndi zina zotetezera kutentha. Chifukwa chake, epoxy resin imagwiritsidwa ntchito kwambiri ngati choyambira chotsutsana ndi dzimbiri. Chifukwa utomoni wa epoxy wochiritsidwa uli ndi kapangidwe ka netiweki ka magawo atatu ndipo ukhoza kukana kulowetsedwa kwa mafuta, umagwiritsidwa ntchito kwambiri mkati mwa khoma la matanki amafuta, matanki amafuta ndi ndege.

Chithunzi 1 chitoliro cha moto

Chithunzi 1 chitoliro chozimitsira moto (zidutswa 5)

(7) Kukana kutentha kwa epoxy curatory compound nthawi zambiri kumakhala 80 ~ 100 ℃. Mitundu ya epoxy resin yomwe siitentha imatha kufika 200 ℃ kapena kupitirira apo.