Ma block a nangula ali ndi njerwa zopachikidwa ndi matailosi obowoka okhala ndi njira zopangira mitundu iwiri ya kukanikiza ndi kuthira. Malinga ndi zofunikira za makasitomala, sankhani zida zomwezo zokhala ndi chopondera cha ng'anjo chomwe chimatha kuponyedwa kudzera mu kuwombera kutentha kwambiri. Block ya nangula ili ndi mphamvu zambiri, mphamvu yabwino yolimbana ndi kukokoloka kwa nthaka komanso kukana bwino kuphulika kwa nthaka, zomwe zimakhala ndi kukula komweko ndi chopondera cha ng'anjo chomwe chimatha kuponyedwa.
Njerwa ya nangula imapangidwa ndi bauxite yapamwamba kwambiri monga zipangizo zopangira zomwe zili ndi alumina ya 48 ~ 80% ndipo zimapangidwa kudzera mu kukanikiza ndi kuwombera kutentha kwambiri. Ma block a nangula amagwiritsidwa ntchito makamaka mu uvuni wotentha monga uvuni wotenthetsera, uvuni wamakina a malasha ndi pamwamba pa ng'anjo yamagetsi.
| Njerwa Yosasinthika ya Nangula | |||||||
| Chinthu | RS - 85 | RS - 80 | RS - 75 | RS - 65 | RS - 55 | RS - 48 | |
| Al2O3 % | ≥85 | ≥80 | ≥75 | ≥65 | ≥55 | ≥48 | |
| Kuoneka ngati Porosity % | ≤23 | ≤22 | ≤23 | ≤23 | ≤22 | ≤22 | |
| Mphamvu Yopondereza Yozizira Mpa | ≥55 | ≥55 | ≥53.9 | ≥49 | ≥44.1 | ≥39.2 | |
| Kukana kwa fractoriness ℃ | ≥1790 | ≥1790 | ≥1790 | ≥1790 | ≥1770 | ≥1750 | |
| Kusagwira Ntchito Pansi pa Katundu 0.2Mpa ℃ | ≥1550 | ≥1530 | ≥1520 | ≥1500 | ≥1470 | ≥1420 | |
| Kusintha Kosatha kwa Linear | 1500℃*2h | -0.4~0.1 | -0.4~0.1 | -0.4~0.1 | -0.4~0.1 | -0.4~0.1 | * |
| 1450℃*2h | -0.4~0.1 | ||||||
Ma block a moto oteteza moto amagwiritsidwa ntchito kwambiri padenga ndi makoma a ng'anjo yotenthetsera yokhala ndi mphamvu zambiri, magwiridwe antchito abwino a makina komanso magwiridwe antchito abwino oletsa kutsekeka kwa strip. Ndipo ingagwiritsidwenso ntchito mu ng'anjo zotenthetsera monga ng'anjo yotenthetsera, uvuni wamakina a malasha ndi pamwamba pa ng'anjo yamagetsi ndi zina zotero.
Fakitale ya RS Refractory ndi kampani yaukadaulo yogulitsa njerwa zopingasa nangula yomwe idakhazikitsidwa kumayambiriro kwa zaka za m'ma 90. Fakitale ya RS Refractory yakhala ikugwira ntchito yopangira njerwa zopingasa nangula kwa zaka zoposa 20. Ngati mukufuna kugwiritsa ntchito njerwa zopingasa nangula, kapena muli ndi mafunso okhudza njerwa zopingasa nangula zokhudzana ndi zizindikiro zakuthupi ndi zamankhwala, chonde titumizireni kwaulere. Ndipo fakitale ya Rs Refractory monga katswiri wopanga njerwa zopingasa nangula ku China, ili ndi zabwino zina zopikisana nazo motere:
Mtengo Wopikisana: Pangani zinthuzo kukhala zopikisana pamsika wanu,
Chidziwitso Chochuluka: Pewani ming'alu ndi kupotoza njerwa,
Zinyalala Zosiyanasiyana: Sungani ndalama zolipirira nkhungu kwa inu,
Kuwongolera Ubwino Kwambiri: Kukwaniritsa zofunikira za makasitomala,
Masheya akuluakulu: Chitsimikizo cha kutumiza mwachangu,
Kulongedza Katswiri: Pewani kuwonongeka ndipo sungani katunduyo poyenda.