Steel Fiber ñan Refractory Castables: Melt Extraction, Grades im Thermal Shock

Bwebwenato

Juun 15, 2016

Refractory fiber im structural fiber rej men ko reoktak jen dron, jen men ko rej bedbed ie ñan jekjek eo. Kōjerbal hooked structural fiber ilo juon castable ej bōd eo elaptata an walok im elaptata an wōnan ilo menin.

Refractory Fiber im Structural Fiber rej men ko reoktak jen dron

Jolok hooked structural fiber ilo juon refractory castable ej bōd eo elaptata an walok im elaptata an wōnan ilo menin. Structural fiber ej tōpar 300 ñan 400 C; ilōñ in kajoor eo ej wōtlo̧k im kōmat ko rejjab jerbal. Refractory castables rej jerbal ilo 800 ñan 1400 C im lining eo ej barāinwōt bōk mōkaj in bwil im kōto. Refractory fiber ej oktak ilo men ko, ilo an ejaak im ilo an jekjek: pedped eo ej stainless steel, wāween eo ej melt extraction, im jekjek eo ej juon jilu-dimensional cluster eo ejjab jimwe. Mejenkajjik eo ejjab kajoor in dāpij ak bōbrae oxidation im dusting ilo joñan bwil im molo ilo ien eo ej kobalok ibben castable eo.

Melt Extraction: Etke Irregular 3D Shapes rej Anchor Better

Melt extraction ej jolok stainless steel eo emōrā kin mejatoto eo elap an mōkaj ak juon wiil eo ej ettōr im kōmman bwe en mōrā ñan fiber ilo an ettōr. Ejelok pija ej bed ie, innem jekjek eo ejjab jimwe: ej rup, jet ien ej rup, im oktak ilo joñan depakpak. Men eo ejjab jimwe ej men eo ej kōmman bwe en wor jilu-dimensional in interlock ilo castable eo ijellokin an juon wire eo ejimwe. Ilo etale ko, melt-extracted fiber ej kalaplok modulus in rupture eo elaplok jen straight fiber ilo ejja joñan eo wot, im unin ej anchorage geometry. Dispersion ej tokjen eo kein karuo: melt-extracted fiber ej jebel ilo dry ak wet mixing im kobalok ñan castable eo ilo an jab likit void ko, im juon void ilo juon lining ej ijo spalling ej jinoe.

304, 310S im 446: joñan bwil im molo ej kōmman joñan

Jilu kilaaj ko rej kalikar jilu joñan bwil im molo im menin ej bebe eo moktata. 304 ej joñan eo ekkar ñan jerbal eo ej wōnmanlok wōt ñan 650 C; 310S, barāinwōt wiakake einwot 2520, ej kalibubu joñan bwil im molo eo eutiej ñan 1200 C; 446 ej joñan eo elap an bwil im molo ñan 1400 C. Kālet eo elap an dik im fiber eo ej oxidize, jako mõttan im lining eo ej mõkaj an jako; kālet eo elap an utiej im wōnāān eo ej jako. Kajitōk eo ejjab joñan bwil im molo eo an layer eo fiber eo ej jijet ie. Juon lining ewōr juon an gradient, ippāñ 1400 C ilo hot face eo im bōlen 800 C ilo backing eo, innem layer kein ruo remaroñ kōjerbal grade ko reoktak.

Thermal Shock: Twenty Water Quenches jen 1000 C

Ruwalitōkñoul bōjāān in jorrāān ko rejjab bwil ak rej m̧akūtkūt jān m̧ōkaj in bwil im kōm̧ōrā. Aorōk in steel fiber ilo thermal shock ej bōbrae eddek in rup: elikin an matrix eo rup, fiber ej bōbrae rup eo, dāpij joñan depakpak eo an edik im bōbrae an rup. Joñjoñ eo ej cycle ko, jolok jen 1000 C ñan den, 20 alen ilo ejelok rup ak rup. Test in ej kwalok elaplok kin mour in jerbal jen joñan an rup, kinke juon shutdown ej mõkaj an bwil jen juon heat-up.

joñan joñan ej lor joñan eo ej bed ie, ejjab juon kg/m3.

Structural concrete ewōr an maroñ in jerbal jen 30 ñan 80 kg/m3; refractory castables rejjab. Joñan joñan ej pedped wōt ioon joñan an ļap, aikuj in dān, wāween an likūt (kōmat, ramming, gunning) im joñan depakpak in lining eo, im ekkā an wōtlo̧k ikōtaan 0.5% im 2% ilo joñan. Eļap im maroñ in jerbal ej jorrāān, rijerbal ro rej kobaik dān, im dān eo kobaiktok ej kakkure an maroñ in bwil. Enin ej jorrāān eo elaptata an walok ilo menin jerbal in. Wāween eo ejimwe ej ñan ri wia eo ejjab maroñ in kōmman menin letok eo im ri kōmman fiber eo en lelok nae, jimor jerbal jen juon wōt bujen.

Explosive Spalling: Etke Fiber ej kōmman bwe en diiklok

Ilo ien eo moktata ej bwil, den eo ilowaan castable eo ej oktak im steam, innem elañe ejjab maroñ in diwōj jen pressure eo ej jebel lining eo. Steel fiber ej jibañ ilo an lelok ial ko ñan vapor im ilo an kōmman rup ko bwe ren peļļo k jidik kin jidik, ukōt juon rup ñan juon rup. Ñan lining ko rebin im low-cement castable ko rebin men in elaplok an aorōk jen joñan an kajoor. Jet mix ko rej barāinwōt kobaik organic fiber eo ewōr juon an melting point epaak 165 C, eo ej bwil ilo ien eo emōkaj im likit vent channel ko, im kōmman bwe steel fiber eo en emmanlok. Enin unin an ruo kain fiber walok ilo juon recipe eo ejjab bwil.

Window eo edik 0.5 ñan 2 Percent ilo Castables

Steel fiber ej etal ñan refractory castable ñan bōbrae an thermal shock spalling, jab ñan kōmman an kajoor an bwil, eo ej unin an dose window eo dik: 0.5 ñan 2 percent ilo volume, im elaptata an jerbal ko epaak 1 percent. Iumin 0.5 percent edik wōt fiber ko ilo juon crack plane ñan an maroñ in bridge e. Ilōñ in 2 percent fiber ko rej bōbrae ilo ien kōmat, jerbal ej rup, im vibration ej kōmman orientation layering eo ej likit weak plane ko ikõtan layers ko. Depakpak in fiber ej ekkejel ñan joñan eo elaptata, ekkā an jilu alen joñan eo, elañe jab, aggregate ej bōbrae fiber eo im ejelok network eo ej walok; ak elaplok jen 40 mm fiber eo ej jok ilo ien an mōkaj. Kōllaajrak in kōmat ej kōmman elaplok likjab jen joñan joñan. Dry-blend powder eo im fiber eo iumin ruo ak jilu minute ko bwe fiber eo en jeblak ilo powder eo, innem kobaik den; jab kobaik den mokta im jolok fiber tokelik, men in ej iien otemjej ball. Dry-out curve ej kōmman bebe kin tokjen eo: dāpij ilo 150 degrees Celsius ñan jolok den eo ejjeḷọk wōnāān, dāpij ilo 350 ñan jolok dān eo ewōr an chemical bound, innem wōt wanlōñḷọk ñan 600 ñan joñan bwil im molo, ippān iien ilo kajjojo bun̄tōn kar kōllaajrake ñan joñan an rup. Elap an bwil im joñan steam eo ilowaan ejjelok jikin an etal ñane, mejān ej rup, im menin ej juon wāween eo ejjab maroñ in lomoren. Grade ej lor furnace eo: 304 iumin 650 degrees Celsius, 310S ilõñin 1000, im 446 ñan jikin kiln ko iturin 1400.

Jilu kajjitōk ko ñan kajjitōk ippān juon ri wia

Jilu kajitok ko rej kōmman bwe en wor refractory fiber ri wia ro. Mokta, ej base grade 304, 310S ak 446, im ej juon certificate in material eo ewōr. Kein karuo, ta joñan depakpak im depakpak ko, ekkā an 0.3 ñan 0.5 mm depakpak im 15 ñan 20 mm depakpak, im remaroñ ke mwijiti ñan joñan depakpak in lining eo. Kein kajilu, ewōr ke melele ko kin thermal shock cycle. Ñan joñan bwil im molo, mõttan eo ejjab maroñ bwil ilo peij in steel fiber ej kwalok 304, 310S, 446 im 430 ippāñ joñan bwil im molo im joñan bwil im molo, eo emaron in kobalok ñan kajjitōk eo einwot juon technical annex.