Fibre Steel for Refractory Castables: Melt Extraction, Grades ani Thermal Shock

Sariyasen

Zuwɛnkalo tile 15, san 2016

Fibre refractaire ni fibre structurelle ye fɛnw ye minnu tɛ kelen ye, k’a ta basigifɛnw na ka taa a bila u cogoya la. Baara kɛli ni fibre structurel hooked ye castable kɔnɔ, o ye fili ye min ka teli ka kɛ ani min sɔngɔ ka gɛlɛn kosɛbɛ nin kulu in na.

Fibre Refractaire ani Fibre Structure ye fɛnw ye minnu tɛ kelen ye

Ka fibre structurel hooked fili castable refractaire kɔnɔ, o ye fili ye min ka teli ka kɛ ani min sɔngɔ ka gɛlɛn kosɛbɛ o kulu in na. Fibre structurel bɛ sanfɛ ka bɔ 300 fo 400 C lamini na; o sanfɛ fanga bɛ bin ka bɔ yen ani finiw bɛ dɛsɛ. Castables refractaires bɛ boli 800 fo 1400 C la ani finimugu fana bɛ funteni ni nɛnɛ teliya ta. Fibre refractaire bɛ danfara don fɛnw na, u dilanni na ani u cogoya la: a basigilen ye nɛgɛ ye min tɛ sɔgɔ, a kɛcogo ye sɔgɔli bɔli ye, wa a cogoya ye kulu saba ye min tɛ sabati. Laɲini tɛ sɛgɛn fanga ye nka ka oksidan ni buguri kɛlɛ funteni na k’a sɔrɔ a bɛ ɲɔgɔn siri ni castable ye.

Melt Extraction: Mun na 3D cogoyaw labɛnbaliw bɛ ankɔri ka ɲɛ

Melt extraction bɛ nɛgɛ nɔgɔlen wulilen fili kɛnɛma ni fiɲɛ teliyaba ye walima ni wotoro ye min bɛ girin, k’a nɛnɛ ka kɛ fibre ye a pantɔ. Ja si tɛ kɛ o la, o la a cogoya tɛ kɛ cogo la: a bɛ kurukuru, tuma dɔw la a bolow bɛ bɔ, a janya tɛ kelen ye. O bɛnbaliya de bɛ fɛn saba-saba-yɔrɔ lakika Dabɔ castable kɔnɔ sanni ka kɛ nɛgɛ tilennen dɔ ka sɔgɔsɔgɔ saniyalen ye. Kɔrɔbɔliw la minnu bɛ tali kɛ ɲɔgɔn na, fiɲɛ min bɔra sɔgɔsɔgɔninjɛ la, o bɛ rupture modulus kɔrɔta kosɛbɛ ka tɛmɛ fibre tilennen kan ni a hakɛ bɛ bɛn, wa a sababu ye anchorage geometry ye. Dispersion ye nafa filanan ye: fibre min bɔra nɔgɔ la, o bɛ faranfasi ɲagami jalen walima jisuma na, ka siri castable la k’a sɔrɔ a ma yɔrɔ lankolonw to, ani yɔrɔ lakolon min bɛ finimugu kɔnɔ, o de bɛ daminɛ yɔrɔ min na spalling.

304, 310S ani 446: Funteni bɛ jatebla latigɛ

Kalanso saba bɛ funteni hakɛ saba ɲɛfɔ wa nin ye desizɔn fɔlɔ ye. 304 ye hakɛ dantigɛlen ye min bɛ kɛ ka baara kɛ ka taa a fɛ fo ka se 650 C ma ; 310S, n’a bɛ feere fana ni 2520 ye, o bɛ cɛmancɛ ni funteni sanfɛla datugu fo ka se 1200 C ma; 446 ye funteni caman na oksidan kɛlɛli hakɛ ye fo ka se 1400 C. Aw bɛ a sugandi ka dɔgɔn kojugu ani fiɲɛ bɛ oksidan sɔrɔ, a bɛ bɔnɛ yɔrɔ la ani a kɔnɔna bɛ dɛsɛ joona; sugandi ka caya kojugu ani musaka bɛ tiɲɛ. Ɲininkali tɛ foro maksimali ye nka fiyɛri sigilen bɛ layini min kɔnɔ, o funteni kuntaalajan ye, finimugu dɔ bɛ ni jiginni ye, ni 1400 C bɛ a ɲɛda funteni na ani laala 800 C bɛ a kɔkanna na, o la layini fila bɛ se ka baara kɛ ni grade danfaralenw ye.

Sumaya sɔgɔli: Ji mugan fagali ka bɔ 1000 C la

Fɛnɲɛnɛmafagalanw kɛmɛsarada la, biwɔɔrɔ tɛ jeni nka u bɛ yɛrɛyɛrɛ ni funteni ni nɛnɛ teliya ye. Nɛgɛdaga nafa min bɛ funteni-sɔgɔli la, o bɛ ka faraw falenni minɛ: matiriyali karilen kɔfɛ, fiɲɛ bɛ farakurun bridge, k’a bonya minɛ dɔɔnin ani ka spalling bali. Sumanikɛlan ye cycles ye, u bɛ faga ka bɔ 1000 C la ka don ji la, siɲɛ mugan k’a sɔrɔ u ma kari walima ka spalling. O kɔrɔbɔli bɛ fɛn caman fɔ baarakɛcogo ɲɛnamaya kan ka tɛmɛ modulu de rupture kan, bawo da tugulen bɛ nɛnɛ joona ka tɛmɛ funteni kan.

A tata hakɛ bɛ tugu Lining System kɔ, a tɛ tugu kg/m3 generiki la

Bɛton jɔcogo bɛ se ka kɛ kilo 30 fo 80 ye m3 kɔnɔ; castables refractaires tɛ o kɛ. A tata hakɛ bɛ bɔ fɛn bɛɛ lajɛlen hakɛ la, ji ɲinini, a bilacogo (casting, ramming, gunning) ani finimugu girinya, wa a ka ca a la a bɛ bin 0,5% ni 2% cɛ hakɛ la. A caya kojugu ani baarakɛcogo bɛ bin, kurun kɔnɔ baarakɛlaw bɛ ji fara a kan, ka ji fara a kan, o bɛ refractoriness tiɲɛ. O de ye foro dɛsɛ ye min ka teli ka kɛ nin fura in na. Taabolo ɲuman ye ko refractory feerela ka mix design bɔ ani fibre dilabaga ka dilan a kɛlɛ, u fila bɛɛ bɛ baara kɛ ka bɔ fɛɛrɛbɔ bɛnkan kelen na.

Explosive Spalling: Mun na fibre bɛ dɔ bɔ a la

Ni a sumana fɔlɔ, ji min bɛ castable kɔnɔ, o bɛ wuli ka kɛ watara ye, ni a ma se ka bɔ degun na, a bɛ finimugu tila. Nɛgɛdaga bɛ dɛmɛ ni siraw ye minnu bɛ ɲɔgɔn kan, ka faraw siri walasa u ka da dɔɔni dɔɔni, ka pɛrɛn dɔ tigɛli kɛ kari ye. Ni finimugu gɛlɛnw ni siman dɔgɔman ka castables ɲiginnenw kama o nafa ka bon ka tɛmɛ fanga sɔrɔli kan. O ɲagaminen dɔw fana bɛ fibre organique fara a kan ni a wuliyɔrɔ bɛ 165 C kɛrɛfɛ, o bɛ jeni joona ka fiɲɛbɔyɔrɔw to, ka nɛgɛ fibre dafa. O de kama, fiɲɛ suguya fila ka teli ka bɔ furakɛcogo kelen na min tɛ se ka wuli.

Kɛmɛsarada la 0,5 fo 2 Fenɛtiri fitinin min bɛ Castables kɔnɔ

Nɛgɛ fiyɛri bɛ don refractory castable kɔnɔ walasa ka thermal shock spalling kɛlɛ, a tɛ kɛ ka nɛnɛ fanga kɔrɔta, o de y’a to fura tata hakɛ finɛtiri ka dɔgɔn: kɛmɛsarada la 0,5 fo 2 hakɛ la, ni a kɛcogo fanba bɛ kɛmɛsarada la 1 kɛrɛfɛ. Kɛmɛsarada la 0,5 duguma, fiɲɛw ka dɔgɔ kojugu crack plane kan walasa k’a bridge. Kɛmɛsarada la 2 sanfɛ, fiɲɛw bɛ dankari ɲagami waati la, baarakɛcogo bɛ bin, wa yɛrɛyɛrɛ bɛ ɲɛsin orientation layering (orientation layering) ma min bɛ plan barikamaw to layɛrɛw ni ɲɔgɔn cɛ. Fibre janya bɛ siri ni farankan hakɛ maksimali ye, a ka c’a la, o hakɛ bɛ se siɲɛ saba ma, n’o tɛ, faralen bɛ fiyɛri bali ani rezow tɛ kɛ ka taa a fɛ; nka ka tɛmɛ milimɛtɛrɛ 40 kan, fiɲɛ bɛ sigi yɛrɛyɛrɛ waati. Mixing order bɛ dɛsɛ caman lase mɔgɔ ma ka tɛmɛ a tata hakɛ kan. Aw bɛ mugu ni fiɲɛ ɲagami jalen na miniti fila fo miniti saba walasa fiɲɛ ka jɛnsɛn mugu kɔnɔ, o kɔ aw bɛ ji kɛ a la; aw kana ji fara a kan abada fɔlɔ ka fiyɛri seri o kɔfɛ, o bɛ kɛ bolo ye tuma bɛɛ. Jalen kurulen de bɛ a kɔlɔlɔ latigɛ: ka i minɛ degere 150 la walasa ka ji hɔrɔnma gɛn, ka i minɛ degere 350 la walasa ka ji sirilen gɛn ni kemikɛli ye, o kɔfɛ dɔrɔn i bɛ wuli ka tɛmɛ 600 kan ka se baarakɛcogo funteni ma, ni waati ye sen kelen-kelen bɛɛ la ka se a bonya ma. Funteni teliya kojugu ani kɔnɔna waji tansiyɔn tɛ taa yɔrɔ si, sanfɛla bɛ sɔgɔsɔgɔ, wa o de ye dɛsɛ cogo kelen ye fibre tɛ se ka min kisi. Grade bɛ tugu foro kɔ: 304 bɛ degere 650 duguma, 310S bɛ 1000 sanfɛ, ani 446 dɔrɔn foro yɔrɔw la san 1400 lamini na.

Ɲininkali saba minnu ka kan ka kɛ feerekɛla dɔ fɛ

Ɲininkali saba bɛ fibre refractaire feerela fanba filɛ. Fɔlɔ, ye basigi grade 304, 310S walima 446 ye, wa a ye matériel certificat ye min bɛ sɔrɔ. Filanan, u cɛmancɛ ni u janya yɛrɛ ye mun ye, a ka c’a la, u cɛmancɛ ye milimɛtɛrɛ 0,3 fo 0,5 ye ani u janya bɛ se milimɛtɛrɛ 15 fo 20 ma, wa yala u bɛ se ka tigɛ ka se u kɔnɔna janya ma wa. Sabanan, yala thermal shock cycle data bɛ yen wa. Walasa ka grade ni funteni hakɛ jateminɛ, nɛgɛ fiyɛri fɛn dilannen ɲɛ yɔrɔ min bɛ se ka wuli, o bɛ 304, 310S, 446 ani 430 jira ni funteni ni funteni sɛgɛsɛgɛli kunnafoniw ye, minnu bɛ se ka nɔrɔ ɲininkali la k’a ɲɛsin i n’a fɔ fɛɛrɛko farankan.