Coreless induction furnaces muaj qhov zoo ntawm kev ua haujlwm siab, txuag hluav taws xob, tsis muaj kuab paug, hloov tau yooj yim ntawm kev sib xyaw, tswj tau yooj yim ntawm huab cua, muaj zog cua sov muaj peev xwm, kev ua haujlwm tsis sib xws, thiab lwm yam, thiab tau siv dav hauv steelmaking, casting, non-ferrous hlau smelting. precision alloy ntau lawm. Induction furnaces muab faib ua lub zog zaus induction rauv (hauv 50Hz) raws li qhov sib txawv; Nruab nrab zaus induction rauv (50Hz-10000Hz) thiab siab zaus induction rauv (10000Hz lossis ntau dua). Nyob rau hauv xyoo tas los no, nrog rau kev loj hlob ntawm high-power thyristor sib txawv zaus lub hwj chim mov thiab kev txhim kho kev ntseeg tau, nruab nrab zaus rauv maj mam hloov lub hwj chim zaus rauv. Piv nrog rau lub hwj chim zaus rauv, qhov nruab nrab zaus rauv muaj qhov zoo ntawm cov thermal thiab hluav taws xob efficiency, luv melting lub sij hawm, tsawg zog noj thiab yooj yim automation. Thiab lub qhov cub induction rau cov kev taw qhia ntawm lub peev xwm loj, lub zog siab, muaj cov kev xav tau ntau dua rau cov khoom siv refractory.
Refractory hauv ob sab phlu yog ib qho tseem ceeb uas txiav txim siab qhov tso zis ntawm induction rauv, casting zoo thiab kev nyab xeeb thiab kev ntseeg siab ntawm kev tsim khoom thiab kev ua haujlwm. Yuav kom tau txais cov ntaub ntawv refractory nrog cov khoom zoo thiab lub neej ntev, peb yuav tsum xub nkag siab txog kev siv cov txheej txheem: (1) lub thickness ntawm refractory hauv ob sab phlu yog nyias, thiab kub gradient ntawm lub hauv ob sab phlu yog loj; (2) Electromagnetic stirring hlau kua nyob rau hauv lub cub tawg, ua rau cov neeg kho tshuab yaig ntawm cov ntaub ntawv refractory; (3) Lub refractory hauv ob sab phlu tau rov ua kom txias thiab thermal shock.
Yog li ntawd, cov xaiv refractories yuav tsum muaj: siab txaus refractoriness thiab load softening kub; Zoo thermal shock stability; Tsis muaj tshuaj tiv thaiv nrog hlau thiab slag; Nws muaj qhov kub thiab txias mechanical zog; Zoo rwb thaiv tsev thiab rwb thaiv tsev kub; Muaj kev tsim kho zoo dua, siab filling ceev, yooj yim sintering, yooj yim txij nkawm; Refractory raw khoom yog nplua nuj nyob rau hauv cov peev txheej thiab tus nqi qis. Txoj kev loj hlob ntawm induction rauv yog ze ze rau kev nce qib ntawm refractory technology, thiab cov tsim ntawm loj-scale fais fab zaus crucible induction rauv feem ntau pib los ntawm kev xaiv cov ntaub ntawv refractory thiab lub cub tawg simulation simulation. Txawm li cas los xij, kev xaiv ntawm lub tshuab hluav taws xob hauv ob sab phlu refractories feem ntau yog nyob ntawm kev siv tus nqi thiab kev lag luam ntawm lub cub tawg. Rau lub hom phiaj ntawm kev sib txuas nruj ntawm cov khoom siv, lub thinner lub hauv ob sab phlu yog, qhov zoo dua, tsis muaj kev cuam tshuam rau lub neej ntawm lub cub tawg.
1. Cov qauv ntawm coreless induction rauv thiab txoj kev tsim kho ntawm refractory hauv ob sab phlu
1) Cov qauv hauv ob sab phlu
Lub coil ua los ntawm lub raj tooj liab yog sab nraum lub hauv ob sab phlu. Cov txheej txheem hauv ob sab phlu yog nteg ib txheej ntawm mica daim ntawv nyob ib sab ntawm lub kauj, ua raws li lub tswb hluav taws xob, ua raws li txheej ntawm asbestos daim ntawv (daim ntaub), thiab tom qab ntawd cov ntaub qhwv qhuav. Nyob rau hauv cov txheej txheem ntawm ci thiab siv, cov qhuav ramming hauv ob sab phlu maj mam tsim cov txheej txheem sintered, cov txheej txheem kev hloov pauv thiab cov txheej txheem tsis muaj sintered, thiab qhov tsim nyog peb txheej txheej thickness yog ib qho tseem ceeb rau kev txiav txim siab lub neej ntawm hauv ob sab phlu. Txhawm rau kom ua tau raws li cov txheej txheem tshem tawm hauv qab-sab saum toj kawg nkaus, cov coil rwb thaiv tsev cement tau tshwm sim, thiab cov cement tau hloov cov mica txheej, ntxiv txheej txheej tiv thaiv rau lub kauj. Cov txheej mastic feem ntau yog tuab dua li mica txheej, tab sis cov thermal conductivity siab dua li ntawm mica, yog li cov txheej txheem hauv ob sab phlu uas muaj mastic yog hu ua cov qauv txhim kho. Cov txheej txheem hauv ob sab phlu yog ua kom tau raws li qhov xav tau ntawm qee cov hlau melting, nrog rau kev tua hluav taws ua ntej thiab muab tub lim es tsis txhob ramming hauv ob sab phlu, cov qauv no daws cov teeb meem ntawm cov khoom qhuav nyuaj rau sintering, thaum txhim kho cov corrosion loj ntawm qee cov hlau molten kua lossis slag rau. lub hauv ob sab phlu.
2) Hom ntawm cov ntaub ntawv refractory rau coreless induction furnaces thiab kev tsim kho hauv ob sab phlu