Pakali pano, palibe mwatsatanetsatane dziko muyezo pomanga castables refractory, koma pali anayendera momveka bwino ndi kudziwika mfundo za zipangizo zosiyanasiyana refractory mu dziko muyezo GB/T kwa zipangizo refractory.Mutha kutchulanso miyezo iyi kuti muyeze kupanga ma castables.Tiye tikambirane mwachidule za iwo.
Ma castables ambiri amatha kuyang'aniridwa ndikuyesedwa molingana ndi Njira Yoyeserera yapadziko lonse lapansi ya Kukula kwa Zida Zowonongeka (GB/T7320).The refractory castables lining adzatsanulidwa malinga ndi izi:
1. Malo omanga ayenera kuyeretsedwa kaye.
2. Zomangamanga zikakhudzana ndi njerwa zosakanizika kapena zinthu zotchinjiriza kutentha, njira zoletsa mayamwidwe amadzi ziyenera kutengedwa kuti ziwalekanitse.Pomanga, matabwa a thovu ndi nsalu zapulasitiki zingagwiritsidwe ntchito kuzipatula, ndipo zimatha kuchotsedwa pambuyo pomanga.
Wopanga castable amakukumbutsani kuti pamwamba pa formwork ntchito kutsanulira ng'anjo akalowa ayenera kukhala yosalala, ndi stiffness okwanira ndi mphamvu, ndi erection ndi kuchotsa formwork ndi dongosolo losavuta ayenera kukwaniritsa zofunika izi:
1. Thandizo lidzakhazikitsidwa molimba ndikuchotsedwa kuti asapangitse kutayikira kwamatope pamgwirizano.Chombo chamatabwa chomwe chimasungidwa kuti chiwonjezeke cholumikizira chiyenera kukhazikika bwino kuti chisasunthike panthawi ya vibration.
2. Kwa ma castables okanira okhala ndi corrosivity amphamvu kapena ogwirizana, wosanjikiza wodzipatula adzakhazikitsidwa mu mawonekedwe kuti atenge njira zotsutsana ndi mgwirizano, ndipo kupatuka kovomerezeka kwa makulidwe olondola ndi +2 ~ - 4mm.Formwork sichidzayikidwa pazitsulo zotsanuliridwa pamene mphamvu zake sizifika 1.2MPa.
3. Ma formwork atha kukhazikitsidwa mopingasa m'magawo ndi magawo kapena midadada pakapita nthawi.Kutalika kwa mawonekedwe aliwonse omangirira kudzatsimikiziridwa molingana ndi zinthu monga kutentha kozungulira kuthira kwa malo omanga ndi nthawi yoikika ya ma castables.Nthawi zambiri, sikuyenera kupitirira 1.5m.
4. Mapangidwe onyamula katundu adzachotsedwa pamene castable ifika 70% ya mphamvu.Zosanyamula katundu formwork adzachotsedwa pamene castable mphamvu akhoza kuonetsetsa kuti ng'anjo pamwamba ndi ngodya sizidzawonongeka chifukwa demoulding.Zowotcha zotentha ndi zolimba ziyenera kuphikidwa pa kutentha kwapadera musanachotsedwe.
5. Kukula kwa kusiyana, malo ogawa ndi mawonekedwe a kukula kwa ng'anjo ya ng'anjo ya integrally cast adzagwirizana ndi mapangidwe apangidwe, ndipo zipangizozo zidzadzazidwa molingana ndi makonzedwe apangidwe.Pamene mapangidwe satchula kukula kwa kusiyana kwa kukula kwa olowa, mtengo wapakati wa kukula kwa mgwirizano pa mita imodzi ya ng'anjo.Kukula pamwamba mzere wa kuwala refractory castable akhoza kuikidwa pa kuthira kapena kudula pambuyo kuthira.Pamene makulidwe a ng'anjo ya ng'anjo ndi aakulu kuposa 75mm, m'lifupi mwa mzere wokulitsa uyenera kukhala 1 ~ 3mm.Kuzama kuyenera kukhala 1/3 ~ 1/4 ya makulidwe a ng'anjo yamoto.Kutalikirana kwa mzere wokulitsa kuyenera kukhala 0.8 ~ 1m molingana ndi mawonekedwe a chitsime.
6. Pamene makulidwe a insulating refractory castable akalowa ndi ≤ 50mm, Buku ≤ ≤ njira angagwiritsidwenso ntchito mosalekeza kuthira ndi pamanja tamping.Pambuyo kuthira, pamwamba pa akalowa ayenera kukhala lathyathyathya ndi wandiweyani popanda kupukuta.
Makulidwe a kuwala insulating refractory castable akalowa δ<200mm, ndi mbali ndi kupendekera kwa ng'anjo akalowa pamwamba zosakwana 60 akhoza kuthiridwa ndi dzanja.Mukathira, iyenera kugawidwa mofanana ndikutsanulidwa mosalekeza.Nyundo ya mphira kapena nyundo yamatabwa iyenera kugwiritsidwa ntchito kugwirizanitsa zigawozo ndi nyundo imodzi ndi theka la nyundo mu mawonekedwe a maula.Pambuyo compaction, kunyamula mbale vibrator ntchito kunjenjemera ndi compact ng'anjo akalowa pamwamba.Pamwamba pa ng'anjo payenera kukhala lathyathyathya, wandiweyani komanso wopanda tinthu tating'onoting'ono.
Nthawi yotumiza: Oct-24-2022