Gulu ndi kupanga njira za opepuka refractories

M’nkhaniyi, Henan refractory njerwa opanga akufuna kulankhula nanu za gulu ndi kupanga njira za opepuka refractories. Ma refractories opepuka amatanthawuza ma refractories okhala ndi porosity yayikulu, kachulukidwe kakang’ono kwambiri komanso kutsika kwamafuta. Ma refractories opepuka amakhala ndi porous (porousity nthawi zambiri amakhala 40-85%) komanso kutchinjiriza kwakukulu.

Pali njira zambiri zogawa opepuka refractories

1. Zimagawidwa ndi kuchuluka kwa voliyumu. Njerwa zopepuka zolemera kwambiri 0.4 ~ 1.3g/cm~2 ndi njerwa zowala kwambiri zokhala ndi kachulukidwe kakang’ono kosakwana 0.4g/cm~2.

2. Amasankhidwa ndi kutentha kwa ntchito. Kutentha kwa ntchito 600～900℃ ndi zinthu zotsika kutentha zotentha; 900 ~ 1200 ℃ ndi sing’anga kutentha kutchinjiriza zakuthupi; pamwamba 1200 ℃ ndi mkulu kutentha kutchinjiriza zakuthupi.

3. Zosankhidwa ndi mawonekedwe a mankhwala. Mmodzi amapangidwa opepuka refractory njerwa, kuphatikizapo dongo, mkulu aluminiyamu, silika ndi ena koyera okusayidi opepuka njerwa; ina ndi zinthu zosaoneka zopepuka zonyezimira, monga konkire yonyezimira yopepuka.

Kutayika kosungirako kutentha ndi kutayika kwa kutentha pamwamba pa ng’anjo ya mafakitale nthawi zambiri kumakhala 24 mpaka 45% yamafuta. Kugwiritsiridwa ntchito kwa njerwa zopepuka ndi otsika matenthedwe madutsidwe ndi mphamvu yaing’ono kutentha monga structural zakuthupi ng’anjo thupi akhoza kupulumutsa mafuta; nthawi yomweyo, chifukwa cha ng’anjo Imatha kutenthedwa ndikuzizidwa mwachangu, imathandizira kupanga bwino kwa zida, imachepetsa kulemera kwa ng’anjo, imathandizira kapangidwe ka ng’anjo, imapangitsa kuti zinthu zizikhala bwino, zimachepetsa kutentha kwa chilengedwe. , ndikuwongolera mikhalidwe yogwirira ntchito.

Zoyipa za ma refractories opepuka ndi porosity yayikulu, mawonekedwe otayirira komanso kukana kwa slag. Slag imalowa mwachangu mu pores za njerwa, zomwe zimapangitsa kuti ziwonongeke, ndipo sizingagwiritsidwe ntchito mwachindunji pokhudzana ndi slag yosungunuka ndi zitsulo zamadzimadzi; imakhala ndi mphamvu zochepa zamakina, kukana kuvala kosakwanira, komanso kusakhazikika kwamafuta. Sichingagwiritsidwe ntchito pazitsulo zonyamula katundu, komanso sizingagwiritsidwe ntchito pokhudzana ndi zida za ng’anjo ndi kuvala kwambiri. Za tsamba.

Chifukwa cha zolakwika zomwe tazitchula pamwambapa za zida zowunikira zopepuka, mbali za ng’anjo zamakampani zomwe zimalumikizana ndi mtengo, mpweya wotentha umanyamula slag, kutuluka kwakukulu, ndi magawo omwe ali ndi kugwedezeka kwakukulu kwamakina nthawi zambiri sagwiritsidwa ntchito. Ma refractories opepuka amagwiritsidwa ntchito ngati kuteteza kutentha kapena zida zotetezera kutentha kwa ma kilns.