Mitundu ya ng’anjo yotentha zida zomangira?

Induction ng’anjo ya ng’anjo imatchedwanso induction ng’anjo refractory zinthu, induction ng’anjo youma kugwedera zinthu, induction ng’anjo knotting zinthu, induction ng’anjo ramming zinthu, ogaŵikana acidic, ndale, ndi zamchere. Zida zopangira acidic zimapangidwa ndi quartz yoyera kwambiri, quartz yosungunuka ndiye chinthu chachikulu chopangira, zowonjezera zowonjezera zimagwiritsidwa ntchito ngati sintering agent; ng’anjo yosalowerera ndale imapangidwa ndi aluminiyamu ndi zida zapamwamba za aluminiyamu monga zopangira zazikulu, ndipo zowonjezera zowonjezera zimagwiritsidwa ntchito ngati sintering agent; zida zopangira ng’anjo zoyambira zimapangidwa ndi corundum yosungunuka kwambiri komanso magetsi oyeretsedwa kwambiri a Fused magnesia ndi spinel yoyera kwambiri amagwiritsidwa ntchito ngati zida zazikulu zopangira, ndipo zowonjezera zowonjezera zimagwiritsidwa ntchito ngati sintering agents.

Pali mitundu itatu ya zida za induction ng’anjo. Chimodzi ndi zitsulo za acidic, zomwe zimapangidwa ndi mchenga wowuma wa quartz, ndipo chogwirizanitsa ndi borax kapena boric acid; chinacho ndi kuwuma kowuma ndi kuumba kwa magnesia, ndipo cholumikizira chimakhalanso borax kapena boric acid. Imodzi ndi ng’anjo yopanda ndale, yomwe imapangidwa ndi alumina bauxite clinker. M’zaka zaposachedwa, ndi chitukuko chaukadaulo komanso kuwonekera kwa zida zatsopano zosiyanasiyana, zida zambiri zatsopano zomangira zidawonekeranso mu zida zopangira ng’anjo yamoto.

1. Kuyika kwa asidi

Acidic ng’anjo ya ng’anjo makamaka ndi mchenga wa quartz, womwe ndi wotchipa, wogawidwa kwambiri, kutchinjiriza kwabwino, zomanga zotsika, zolakwika zochepa pakagwiritsidwe ntchito, komanso kupanga kokhazikika. Komabe, mchenga wa quartz umakhala wochepa kwambiri ndipo sungathe kukwaniritsa zofunikira za ng’anjo zazikuluzikulu zolowera. Ndipo pali kusintha kwa gawo lachiwiri panthawi yotentha, kukhazikika kokhazikika kumakhala kosauka, kukhazikika kwa mankhwala sikoyenera, ndipo kumangochita ndi slag kuti apange dzimbiri. Pofuna kupewa zolakwika izi, quartz yosakanikirana ingagwiritsidwe ntchito. Zomwe zili pamwambazi, zomwe zili mu silicon dioxide ndizoposa 99%, kutsutsa kumapita patsogolo kwambiri, pafupi ndi malo osungunuka, ndipo palibe kusintha kwachigawo chachiwiri pamene kutentha, kulibe kusintha kwa kutentha, ndipo kutentha kwa kutentha kumakhala kokhazikika. . Kugonana nakonso kwapita patsogolo kwambiri.

2. Mzere wosalowerera

The corundum yosakanikirana imagwiritsidwa ntchito ngati chitsa cha ng’anjo yolowera. Chifukwa chakuti kusungunuka kwa corundum yoyera ndipamwamba kwambiri mpaka 2050 ℃, kuuma kwake kumakhala kokwanira 8. N’zosavuta kuvala, kutentha kwambiri, komanso kumakhala ndi kukhazikika kwa mankhwala kuposa quartz. Oyenera kutentha chitsulo choponyedwa kapena ng’anjo yayikulu. Chikhalidwe chake ndi chakuti ilinso ndi zolakwika za kusintha kwa gawo ndi coefficient yaikulu yowonjezera kutentha. Pochita, kutenga nawo mbali kwa ufa wa spinel kumatha kupititsa patsogolo kukana kwa dzimbiri ndi kukhazikika kwanthawi zonse.

3. Zingwe zamchere

Mng’anjo wamba wamchere wamchere umapangidwa ndi kuwuma kwa magnesia. Ubwino wake ndi refractoriness mkulu, pafupi 2800 ℃, chilema ndi kuti coefficient kukulitsa ndi lalikulu, zosavuta kusweka, akalowa magnesia ndi dzimbiri kugonjetsedwa, moyo wautali, mtengo wotsika, ndipo chimagwiritsidwa ntchito kwambiri. Kuchita nawo ufa wa corundum woyera kapena ufa wa spinel kumapititsa patsogolo moyo wautumiki.

4. Mzere wa msana

Spinel lining ndi mtundu watsopano wazinthu zopangira. Amapangidwa kuchokera ku alumina ndi magnesia, amawotchedwa pa kutentha kwakukulu kapena kusinthidwa kukhala spinel ndi maphatikizidwe amagetsi, ndiyeno amapangidwa ndi miyezo yosiyanasiyana ya tinthu ngati ikufunikira. Amagwiritsidwa ntchito ngati ng’anjo yopangira ng’anjo, ndipo wothandizira akadali Kusankha borax kapena boric acid ali ndi ubwino wa ng’anjo yoyera ya corundum ndi ng’anjo ya magnesia, ndikuteteza zolakwika zake. Ndi njira yopangira ng’anjo yayikulu yolowera m’ng’anjo yayikulu komanso ng’anjo yotentha kwambiri. Zida zambiri zomangira ng’anjo zochokera kunja zimakhala zamtunduwu.

5. Zamakono zatsopano ndi zipangizo zatsopano zopangira ng’anjo yamoto

① Tengani nawo gawo pa ufa wochuluka kwambiri (makamaka ma microns ochepa) muzoyatsa zamba zamba, zomwe zimatha kukulitsa kukana kwa dzimbiri komanso kukhazikika kwa kutentha kwa zida za ng’anjo, monga silika yaying’ono ufa, alumina yaying’ono ufa, woyera corundum yaying’ono ufa, spinel micro powder, etc.

②Kuumba mouma. Zomangira za ng’anjo zachikhalidwe zonse zimapangidwa ndi ufa wowuma ndi ramming youma. Choyipa chake ndikuti ndikosavuta kupanga chromatograph ndikupanga zolakwika monga zopanda kanthu. Mu njira yowuma, 2% mpaka 3% kusakaniza kwa madzi kumagwiritsidwa ntchito kuchepetsa chromatography, ndipo kukhulupirika ndikwabwino, ndipo sikudzavulaza kwambiri. Zimangofunika nthawi yayitali mu uvuni wotentha kwambiri.

③Njira yowuma yowuma imatenga nawo gawo mu simenti yoyera ya calcium aluminate, yokhala ndi ng’anjo yoyera ya acidic kapena ndale; mu ng’anjo yamchere yamchere, imatenga nawo gawo mu magnesium oxide, sodium hexametaphosphate, etc.