Nyob rau hauv tus txheej txheem ntawm kev siv lub nruab nrab zaus rauv, lub thickness ntawm cov refractory khoom siv nyob rau hauv lub qhov cub hauv ob sab phlu tsuas yog 70-110mm, nyob rau hauv lub intermediate zaus furnace hauv ob sab phlu yog nyob rau hauv kev sib cuag nrog kub kub kua hlau, sab nraum. yog nyob ze rau ntawm cov dej-txias coil, qhov kub ntawm qhov sib txawv ntawm sab hauv thiab sab nraud ntawm lub refractory yog loj heev, thiab nws yog nyob rau hauv cov seem nyias thiab muaj zog corrosive ib puag ncig ntawm ntau melting kev khiav hauj lwm. Cov txheej txheem tseem ceeb cuam tshuam rau hauv ob sab phlu puas muaj xws li melting kub, degassing lub sij hawm, thawj degassing ntim, tshuaj muaj pes tsawg leeg ntawm slag thiab steel hom tsim. Lub ntsiab yam tseem ceeb cuam tshuam rau kev puas tsuaj ntawm ob sab yog: tshuaj corrosion ntawm slag, spalling ntawm refractory qauv thiab thermal corrosion.
1.Induction rauv hauv ob sab phlu refractory khoom thiab cov yam ntxwv:
Induction furnace hauv ob sab phlu feem ntau yog ua los ntawm cov ntaub ntawv refractory uas muaj ntau qhov ntau thiab tsawg (feem ntau siv cov ntaub ntawv refractory feem ntau yog magnesium, quartz, txhuas thiab cov ntaub ntawv sib xyaw plaub pawg).
Cov yam ntxwv: kev sib xyaw ncaj qha. Yog li ntawd, corrosion kuj yog siab, mechanical zog yog siab, thiab thermal shock kuj yog zoo.
2. Kev puas tsuaj ntawm cov khoom siv magnesia
Noj magnesia refractories ua piv txwv, kev puas tsuaj mechanism ntawm magnesia refractories tau piav qhia:
Lub ntsiab tshwm sim ntawm cov khoom siv magnesium puas yog: thermal yaig los ntawm cov kua hlau ntws thiab tshuaj lom neeg los ntawm cov khoom slag nkag mus rau hauv cov khoom.
Nyob rau hauv cov txheej txheem smelting, cov tshuaj yuav nkag mus rau hauv refractory matrix los ntawm cov kab capillary mus rau hauv lub refractory matrix thiab corrodes lub hauv ob sab phlu. Cheebtsam nkag mus rau sab hauv ntawm lub refractory matrix muaj xws li; CaO, SiO2, FeO hauv slag; Lub Fe, Si, Ai, Mn, C nyob rau hauv cov kua hlau, txawm muaj hlau vapor, CO gas thiab hais txog. Cov khoom nkag no tau muab tso rau hauv cov kab capillary ntawm cov khoom siv refractory, tsim kev tsis sib haum xeeb ntawm lub cev thiab tshuaj lom neeg ntawm cov khoom ua haujlwm refractory thiab cov thawj refractory matrix, thiab yuav pom cov kab nrib pleb, ntog tawm thiab xoob qauv nyob rau hauv kev hloov pauv ntawm kev khiav hauj lwm kub. . Nyob rau hauv txoj kev loj heev, cov txheej txheem kev puas tsuaj no hnyav dua li cov txheej txheem kev puas tsuaj.