Dab tsi yog refractory nozzle?

Lub npe ntawm refractory refractory los ntawm nws cov lus muaj nuj nqi los ntawm nws txoj kev ua haujlwm - cov lus "nozzle piav qhia nws lub luag haujlwm yog ib lub luag haujlwm me me ua lub neej zoo nyob hauv ib puag ncig qhov chaw siab. Raws li nws cov kev siv tshwj xeeb, kev hloov kho tsis tuaj yeem faib ua ntau hom, xws li nkag sab sauv, Submer tsis muaj qhov sib txawv ntawm cov qauv thiab cov khoom siv sib txawv.

Dab tsi yog refractory nozzle?

Refractory nozle yog cov khoom siv refractory siv rau cov hlau hluav taws xob siab (feem ntau yog cov hlau tsis muaj metall

Nws ua kom muaj kev ruaj ntseg thiab kev nyab xeeb ntawm smelting thiab casting txheej txheem los ntawm kev tswj hwm kom raug, txaus tus nqi thiab ntws ntawm cov yaj. Refrefactory tsis tas yuav tsum muaj kev tiv thaiv huab kub siab (feem ntau dhau 1500 ° C), tab sis kuj yuav tsum muaj kev puas tsuaj rau kev puas tsuaj, thiab thermal poob siab puas los ntawm yaj thiab slag.

Muaj pes tsawg leeg thiab cov khoom siv ntawm kev refractator nozzles

Kev ua yeeb yam ntawm refractator nozzles nyob ncaj qha rau lawv cov khoom xaiv thiab tsim qauv qauv. Hauv qab no yog nws lub ntsiab Cheebtsam thiab cov khoom siv cov khoom:

1. Cov ntaub ntawv tseem ceeb

Txhuas carbon carbon (al₂o₃-c): high-purity alumina (al₂o₃) yog siv los ua cov ntaub ntawv tshiab, thiab cov pa roj carbon monoxide (xws li cov pa roj carbon) ntxiv rau txhim kho thermal poob siab thiab yaig Kuj. Aluminium Carbon nozzles tau siv dav dav nyob rau hauv cov pw thiab tundishes, thiab haum rau casting cov carbon hlau.
Aluminium zirconium carbon (al₂o₃-zro₂-c) xide xide thiab thermal poob siab, thiab yog haum rau high manganese steel lossis lwm yam tshwj xeeb steel kawm.
High-alumina: Nrog High-alumina Bauxina Bauxite raws li cov khoom siv tseem ceeb, nws yog haum rau cov khoom siv tsis txaus, thiab cov roj carbon hlau tsis zoo, thiab muaj tus nqi tsawg.
Magnesium-Carbon (Mgo-c): Nrog cov khoom siv magnesium (MgBES) yog rau qib alkalinity swb ib puag ncig lossis cov qauv hlau tshwj xeeb.
Fused Quartz: Siv rau casting qee cov hlau roj carbon lossis tsis muaj roj av, nws muaj qhov zoo thermal poob siab, tab sis qaug zog yaig tsis kam.
Cov ntaub ntawv sib xyaw: xws li siv cov kab ke nozzles nrog zirconium oxide cov tub ntxhais thiab cov txheej txheem qib siab ntawm cov khoom sib txawv ntawm cov ntaub ntawv sib txawv.

2. Tsim qauv

Refractory Nozzlesfeem ntau cylindrical lossis conical, nrog meej ntws raws sab hauv (aperture yog feem ntau 10-100 hli) kom tswj tau tus nqi txaus. Qee lub tshuab luam tawm (xws li cov immercles tsis muaj zog) yog tsim nrog cov kab tshwj xeeb, kom ua kom zoo dua cov dej ntws tawm ntawm Molten hlau hauv lub crystallizer. Cov txheej txheej sab nraud yuav npog nrog lub tsho hlau (xws li lub tes tsho hlau (xws li cov hlau tsho) kom txhim kho cov tshuab hluav taws xob muaj zog thiab tiv thaiv kev poob siab tawg.

3. Kev ua haujlwm ntxiv

Txhawm rau txhim kho kev ua tau zoo, cov txuas ntxiv hauv qab no feem ntau ntxiv rau Refractory nozzles:

Antioxidants: xws li silicon (si) thiab txhuas (al) hmoov, txhawm rau tiv thaiv cov khoom lag luam carbon los ntawm oxidizing thaum oxidizing ntawm qhov kub.

Stabilizers: xws li cov roj hauv cov roj loj xws li xws li calcium (cao) thiab magnesium (mgo), los txhim kho thermal boilal kev poob siab thiab yaig Kuj.

Kev kho: xws li cov resins thiab asphalt, los txhim kho molding moulding muaj zog thiab kub-kub ruaj khov.

Kev ua haujlwm ntawm refractory nozzles

Refractory tsis ua ntau lub luag haujlwm tseem ceeb hauv kev kub-kub metallurgical cov txheej txheem:

1. Flow tswj

Refrefractory perzzles kom meej meej tswj tau tus nqi ntws thiab ntws ntawm melt los ntawm qhov loj me thiab cov duab ntawm lawv cov kev lom zem sab hauv. Piv txwv li, hauv kev nruam casting txheej txheem, cov submerged nozzle kev koom tes nrog kev siv lub tshuab ua kom tsis txhob nkag mus los ntawm kev nrawm nrawm lossis qeeb qeeb.

2. Tiv thaiv cov melt

Lub submerged nozzle mus tob rau hauv lub crystallizer kom tiv thaiv cov kab mob molten los ntawm kev raug rau cov huab cua, txo cov oxidation thiab suav ua kom zoo ntawm lub billet. Tsis tas li ntawd, kev tsim qauv du ntawm sab hauv phab ntsa ntawm lub nozzle tuaj yeem txo cov kev kub ntxhov thiab txo qhov kev pheej hmoo ntawm slag incusion.

3. Kev kub thiab yaig tsis kam

TusRefractory nozzleyuav tsum tau tiv thaiv kev cuam tshuam ntawm Molten Steel lossis SLAG ntawm 1500-1700 ° C. Lub siab rov ua haujlwm thiab kev xav tsis txaus siab ntawm cov khoom kom ntseeg tau tias nws tseem nyob ruaj khov thaum muaj ntau lub neej pov tseg.

4. Thermal poob siab ruaj khov

Thaum lub tsev pw yog hloov lossis cov casting yog pib thiab nres, lub nozzle yuav muaj kev hloov pauv kub. Ua kom zoo regractory tsis muaj kev pheej hmoo ntawm kev pheej hmoo ntawm thermal poob los ntawm kev txhim kho cov khoom tsim thiab cov qauv tsim qauv.

5. Tiv Thaiv Clogging

Rau high-aluminium hlau lossis calcium-muaj cov hlau, alumina suav nrog hauv cov hlau molten, ua rau nozle clogging. Refractart qhov nozzles feem ntau siv cov ntaub ntawv los tiv thaiv kab mob (xws li cov khoom siv puas muaj Cao) los tiv thaiv clogging los ntawm kev tsim cov khoom tsawg me me (xws li Caudo₃).

Daim Ntawv Thov Cov Khoom Siv Hluav Taws Xob Hluav Taws Xob Nozzles

Refrefactory tsis muaj dav siv nyob rau hauv cov hauv qab no:

1. Hlau Thiab Hlau Metallurgy

Tshev: lub pas dej sab sauv thiab qis dua yog siv nyob rau hauv qab ntawm lub ladle, thiab kev koom tes nrog lub zawv zawg nozzle System los tswj hwm cov ntws ntawm Molten Steel mus rau tom cov tundish.
Tundish: Cov kev sau nozzle thiab cov impleed nozzle yog siv los hloov molten steel los ntawm cov crystallizer kom ua kom zoo dua cov txheej txheem txuas ntxiv.
Converter thiab cov hluav taws xob tshuab hluav taws xob: Refractory lub tshuab hluav taws xob tau siv rau cov hlau hluav taws xob txhawm rau tiv thaiv cov yaig ntawm high-kub molten hlau thiab slag.

2. Cov hlau uas tsis muaj hlau smelting

Nyob rau hauv smelting ntawm cov tsis-ferrous hlau xws li txhuas, tooj liab, thiab magnium, xws li cov lus qhia nozzles hauv txhuas alloy casting.

3. Cov iav thiab kev lag luam ceramic

Refrefactory tau siv rau kev tswj hwm cov pa hluav taws xob siab lossis lub cav phaj me me, thiab yuav tsum muaj kev sib zog ua rau muaj kev ruaj khov.

4. Lwm cov kev lag luam kub-

Xws li cov thoob khib nyiab, tshuaj lom neeg kub siab, thiab lwm yam.

Cov txheej txheem ntau lawm ntawm refractator nozzles

Kev tsim cov refractory muaj cov txheej txheem ntau yam nyuaj los xyuas kom meej tias lawv cov kev ua tau raws li cov qauv kev lag luam:

1. Cov ntaub ntawv xaiv thiab cov khoom xyaw
Xaiv cov kev coj dawb huv Alumina, zirconium oxide, graphite thiab lwm cov ntaub ntawv raw, thiab nruj me ntsis tswj cov ntsiab lus impurity. Ntxiv cov tshuaj antioxidants, binders, thiab lwm yam raws li cov qauv piv thiab sib xyaw.

2. Mog
Siv isostatic nias lossis siab siab moulding thev naus laus zis los xyuas kom meej tias cov qauv nonzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzle yog tuab thiab cov kev lom zem. Qee qhov tsis muaj zog (xws li cov immercles tsis muaj zog) yuav tsum tau tsim los ua cov duab nyuaj los ntawm kev ua pwm pwm.

3. Sintering
Sintering ntawm qhov kub (1400-1800 ° C) hauv cov pa oxygen-dawb lossis tiv thaiv (xws li nitrogen) txhim kho khoom siv zog thiab thermal poob siab kuj. Qee cov khoom siv sterinary lossis kev kho cua sov kom ua tau zoo dua.

4. Nto Kho
Polish Qhov Flow channel lossis thov cov txheej los tiv thaiv kab mob (xws li zro₂ txheej) los txhim kho corrosion tsis kam thiab muaj fluidity. Cov txheej txheej sab nraud yuav tau npog nrog lub tsho hlau tsho lossis tshuaj tiv thaiv oxidation.

5. Kev Soj Ntsuam Zoo
Qhov porosity, kab nrib pleb thiab sab qhov yog qhov tseeb ntawm lub nozzle yog tshuaj xyuas los ntawm cov kev sim ua tsis zoo xws li X-Rays thiab Ultrasound. Refractory ua tau zoo thiab yaig kuj tau tshawb xyuas los ntawm sim cov kev ntsuas simulation.

Qhov zoo ntawm refractator nozzles

Qhov kev thov dav ntawm refractory tsis muaj cua sov nyob rau hauv high-kub kev lag luam stems los ntawm nws cov txiaj ntsig hauv qab no:

Siab ruaj: Cov ntaub ntawv zoo thiab cov txheej txheem xyuas kom meej tias cov nozz tuaj yeem siv rau ib puag ncig ntev hauv ib puag ncig muaj ob peb teev mus rau ob peb hnub.
Kev tswj hwm kev tswj hwm: Qhov tseeb ntawm Flow channel tsim ua kom muaj kev ruaj khov ntawm cov yaj tau ntws thiab txhim kho cov khoom lag luam zoo.
Yaig Kuj: Nws muaj zog tsis kam mus rau tshuaj yaig thiab kev siv tshuab yis ntawm Molten Steel thiab Slag, Txo Txij Nkawm Cov Nqi.
Thermal poob siab: Cov khoom siv zoo rau cov kev pheej hmoo ntawm kev pheej hmoo ntawm thermal poob siab thiab hloov mus rau cov txheej txheem uas nquag nres.
Diversified Tsim: nozzles ntawm ntau hom thiab cov specifications ua raws li cov txheej txheem ntau yam thiab muaj ntau cov ntawv thov kev tso npe.

Raws li cov tseem ceeb tiv thaiv kev lag luam siab, refractory sib xyaw ua ntau yam kev ua kom muaj kub siab, corrosion tsis kam thiab ntws tswj. Nws yog qhov tsis tseem ceeb "qab-tus-yeeb yam hero" hauv cov hlau thiab hlau metallurgy, tsis-ferrous hlau smelting thiab lwm yam lag luam.