Makhalidwe ake ndi otani njerwa zaumbali?

Njerwa zomangira zikugwiritsidwa ntchito monga zopangira ntchito zambiri zomanga. Chifukwa cha ntchito zake zabwino kwambiri, zitha kuthandiza mafakitale apadera ambiri kuti azigwira ntchito kutentha kwambiri. Njerwa zokhotakhota tsopano ndi chimodzi mwazinthu zomwe zimayambitsidwa m’minda ndi m’mafakitale ambiri. Mwachidule, monga zopangira zosagwira kutentha kwambiri, njerwa zomangira zimatha kugwira ntchito pa kutentha kuyambira 1,580 ° C mpaka 1,770 ° C. Mafakitale ambiri amagwiritsa ntchito njerwa zotere pomanga ng’anjo zosungunulira. Pamene mabizinesi ochulukirachulukira ali ndi kufunikira kwakukulu kwa njerwa zotsutsa, pansi pa izi, mawonekedwe ndi kukula kwa njerwa zotsutsa zakhala zosiyana. Kuphatikiza apo, njerwa zokanira pamsika tsopano zili ndi zinthu zosiyanasiyana. Tiyeni tione mwachidule makhalidwe a njerwa refractory pamodzi:

1. Load softening temperature. As a key parameter index of refractory bricks, this characteristic can be said to directly determine the high temperature resistance and endurance.

2. Mankhwala opangidwa. Pakuti khalidwe la njerwa refractory, makamaka ntchito kudziwa chikhalidwe chonse cha zinthu ndi wachibale khalidwe.

3. Kulimbana ndi kutentha kwa kutentha. Mbali imeneyi makamaka kuthandiza refractory njerwa kuti kuonongeka kapena kuonongeka pamene kutentha kukwera ndi kusintha kwambiri.

Fourth, volume density. For the bulk density of refractory bricks, usually the higher the unit density, the higher the density of the refractory brick and the better its strength. In addition, for the bulk density of refractory bricks, the relevant manufacturers must strictly require the overall visible pores of the product.

5. Compressive ndi flexural mphamvu. Njerwa za refractory siziyenera kupirira kutentha kwanthawi zonse panthawi yogwira ntchito, komanso zimafunika kukumana ndi kumeta ubweya pafupipafupi. Panthawiyi, mphamvu zonse zosinthika komanso zopondereza ziyenera kukhala zapamwamba kwambiri.

Zomwe zili pamwambazi ndizofotokozera mwachidule za makhalidwe a njerwa zotsutsa. Ndikuyembekeza kuti zingakuthandizeni kumvetsetsa ubwino ndi makhalidwe a njerwa zotsutsa mozama, kuti muthe kusankha zinthu zoyenera kwa inu.