Nyob rau hauv lub cheeb tsam ntawm high-temperature industrial furnaces (xws li steelmaking converters, ladles, thiab blast furnaces),magnesium carbon cibsawv tawm raws li cov ntaub ntawv tseem ceeb refractory, ua tsaug rau lawv zoo heev tiv thaiv corrosion, high-temperature stability, thiab thermal shock kuj. Cov txheej txheem ntau lawm ntawm cov cib no yog kev sib xyaw ua ke ntawm kev siv tshuab thiab kev ua kom zoo-txhua kauj ruam ncaj qha txiav txim siab qhov khoom kawg. Hauv qab no, peb coj koj los ntawm kev ua tiav kev ua haujlwm ntawm magnesium carbon cib, qhia seb peb ua li cas kom txhua lub cib ua tau raws li cov qauv kev lag luam.
1. Raw Khoom Xaiv: Lub hauv paus ntawm High-Quality Magnesium Carbon Bricks
Qhov zoo ntawm cov ntaub ntawv raw yog thawj kab ntawm kev tiv thaiv rau magnesium carbon cib kev ua tau zoo. Peb ua raws li cov txheej txheem xaiv nruj kom ntseeg tau tias txhua yam ua tau raws li cov qauv siab:
High-Purity Magnesia Aggregate:Peb siv fused magnesia lossis sintered magnesia nrog MgO cov ntsiab lus ntau dua 96%. Cov khoom siv raw no muab cov cib uas muaj qhov kub thiab txias tsis kam tiv thaiv corrosion, zoo tiv taus qhov yaig ntawm cov hlau molten thiab slag hauv qhov cub.
High-Qib Carbon Source:Ntuj flake graphite nrog cov ntsiab lus carbon ntawm 90% + yog xaiv. Nws cov txheej txheem txheej txhim kho lub cib thermal shock tsis kam, txo qhov kev pheej hmoo ntawm kev tawg vim qhov kub hloov pauv sai thaum lub sijhawm ua haujlwm ntawm lub cub tawg.
Premium Binder:Phenolic resin (hloov rau qhov kub thiab txias) yog siv los ua cov ntaub ntawv. Nws ua kom muaj kev sib raug zoo ntawm magnesia thiab graphite, thaum tsis txhob volatilization lossis decomposition ntawm qhov kub thiab txias, uas yuav cuam tshuam rau lub cib kev ncaj ncees.
Trace Additives:Ib qho me me ntawm cov tshuaj antioxidants (xws li txhuas hmoov, silicon hmoov) thiab cov khoom siv sintering ntxiv los tiv thaiv graphite oxidation thiab txhim kho cov cib kom ceev. Tag nrho cov ntaub ntawv raw tau dhau 3 qhov kev ntsuas purity kom tshem tawm cov impurities uas tuaj yeem ua rau tsis muaj zog
2. Crushing thiab Granulating: Precise Particle Size Control for Uniform Structure
Uniform particle loj faib yog qhov tseem ceeb los xyuas kom meej qhov ceev thiab lub zog ntawm magnesium carbon bricks. Cov theem no ua raws li cov txheej txheem nruj:
Crushing txheej txheem:Ua ntej, loj magnesia blocks thiab graphite yog crushed rau hauv me me hais siv lub puab tsaig crushers thiab cuam tshuam crushers. Lub crushing ceev yog tswj ntawm 20-30 rpm kom tsis txhob overheating thiab kev puas tsuaj rau raw khoom qauv.
Kev tshuaj ntsuam thiab kev faib tawm:Cov ntaub ntawv crushed raug tshuaj xyuas los ntawm ntau txheej vibrating cov ntxaij vab tshaus (nrog mesh loj ntawm 5mm, 2mm, thiab 0.074mm) cais lawv mus rau hauv coarse aggregates (3-5mm), nruab nrab aggregates (1-2mm), nplua aggregates (0.074-1mm), thiab ultrafine hmoov (<0.074mm). Qhov yuam kev me me yog tswj tsis pub dhau ± 0.1mm
Granule Homogenization:Qhov sib txawv ntawm qhov sib txawv yog sib xyaw rau hauv lub tshuab ua kom siab ceev rau 10-15 feeb ntawm qhov ceev ntawm 800 rpm. Qhov no ua kom ntseeg tau tias txhua pawg ntawm cov granules muaj qhov sib xws, tso cov hauv paus rau cov cib tsis sib xws.
3. Sib xyaw thiab Kneading: Ua kom muaj zog Bonding ntawm Cheebtsam
Qhov sib tov thiab kneading theem txiav txim siab lub zog sib txuas ntawm cov khoom siv raw. Peb siv ob-helix mixers siab heev thiab nruj me ntsis tswj cov txheej txheem txheej txheem:
Pre-Mixing ntawm cov ntaub ntawv qhuav:Coarse, nruab nrab, thiab nplua aggregates yog thawj sib tov qhuav rau 5 feeb kom ntseeg tau tias txawm faib ntawm txhua yam. Cov kauj ruam no zam cov concentration hauv zos ntawm cov pa roj carbon lossis magnesia, uas tuaj yeem ua rau muaj kev sib txawv
Ntxiv Binder thiab Kneading:Hloov kho phenolic resin (rhuab mus rau 40-50 ℃ kom zoo dua fluidity) yog ntxiv rau qhuav sib tov, ua raws li 20-25 feeb ntawm kneading. Lub tov khoom kub yog tswj ntawm 55-65 ℃, thiab lub siab tswj ntawm 0.3-0.5 MPa - qhov no ua kom lub binder tag nrho wraps txhua particle, tsim ib tug ruaj khov "magnesia-graphite-binder" qauv.
Kev ntsuam xyuas qhov sib xws:Tom qab kneading, qhov sib tov qhov sib xws yog sim txhua 10 feeb. Qhov zoo sib xws yog 30-40 ( ntsuas los ntawm tus qauv ntsuas qhov sib xws); Yog hais tias nws qhuav dhau los yog ntub dhau lawm, lub binder ntau npaum li cas los yog kneading lub sij hawm yog hloov nyob rau hauv lub sij hawm.
4. Xovxwm tsim: Siab-siab zoo rau qhov ntom thiab muaj zog
Kev sib sau xovxwm yog cov kauj ruam uas muab magnesium carbon bricks lawv cov duab kawg thiab ua kom muaj qhov ntom ntom. Peb siv tsis siv neeg hydraulic presses nrog precision siab tswj:
Kev npaj pwm:Customized steel pwm (raws li tus neeg yuav tsum tau muaj rau cib loj, xws li 230 × 114 × 65mm los yog tshwj xeeb-zoo li qhov ntau thiab tsawg) yog ntxuav thiab coated nrog ib tug tso tawm neeg sawv cev los tiv thaiv cov sib tov los ntawm sticking rau pwm.
High-Pressure Pressing:Cov sib tov kneaded yog nchuav rau hauv pwm, thiab hydraulic xovxwm siv lub siab ntawm 30-50 MPa. Qhov ceev ceev yog teem rau 5-8 mm / s (slow nias kom tshem tawm cov npuas npuas) thiab tuav rau 3-5 vib nas this. Cov txheej txheem no ua kom lub cib qhov ntom ntom ntawm 2.8-3.0 g / cm³, nrog cov porosity tsawg dua 8%.
Demolding thiab Inspection:Tom qab nias, cov cib yog demolded txiav thiab kuaj xyuas qhov tsis xws luag (xws li cov kab nrib pleb, cov npoo tsis sib luag). Cib nrog qhov tsis xws luag tam sim ntawd tsis lees paub kom tsis txhob nkag mus rau cov txheej txheem tom ntej
5. Kev kho cua sov (Curing): Txhim kho Binder Bonding thiab ruaj khov
Kev kho cua sov (kho) ntxiv dag zog rau txoj hlua khi txoj hlua khi thiab tshem tawm cov khoom tsis zoo ntawm cov cib. Peb siv lub qhov cub nrog qhov kub thiab txias tswj:
Stepwise Cua sov: cib muab tso rau hauv lub qhov cub, thiab qhov kub thiab txias yog nce stepwise:
20-80 ℃ (2 teev):Evaporate saum npoo av noo;
80-150 ℃ (4 teev):Txhawb nqa resin ua ntej kho;
150-200 ℃ (6 teev):Ua kom tiav resin cross-linking thiab kho;
200-220 ℃ (3 teev):Stabilize lub cib qauv ..
Tus nqi cua sov yog tswj ntawm 10-15 ℃ / teev kom tsis txhob tawg vim thermal stress.
Volatile Tshuaj Tshem Tawm:Thaum lub sij hawm kho, cov khoom tsis haum (xws li me me-molecule resins) raug tso tawm los ntawm lub qhov cub hluav taws xob, kom ntseeg tau tias lub cib cov qauv sab hauv yog ntom thiab tsis muaj voids.
Cov txheej txheem txias: Tom qab kho, cov cib tau txias rau chav sov ntawm tus nqi ntawm 20 ℃ / teev. Kev ua kom txias nrawm yog zam kom tsis txhob muaj kev puas tsuaj thermal.
6. Tom qab ua tiav thiab kev soj ntsuam zoo: Ua kom txhua lub cib ua tau raws li cov qauv
Cov theem kawg ntawm kev tsim khoom yog tsom rau kev ua tiav thiab kev ntsuas nruj kom ntseeg tau tias txhua magnesium carbon cib ua tau raws li kev thov kev lag luam:
Sib tsoo thiab Trimming:Cib nrog cov npoo tsis sib xws yog hauv av siv CNC sib tsoo tshuab, kom ntseeg tau tias qhov kev ua yuam kev yog nyob rau hauv ± 0.5 hli. Cov cib tshwj xeeb (xws li arc-shaped cib rau converters) yog ua tiav siv 5-axis machining chaw kom haum rau lub cub tawg sab hauv phab ntsa.
Comprehensive Quality Testing:Txhua batch ntawm cib tau dhau 5 qhov kev xeem tseem ceeb:
Kev ntsuas qhov ntom thiab qhov porosity:Siv cov txheej txheem Archimedes, xyuas kom muaj qhov ntom ntom ≥2.8 g / cm³ thiab porosity ≤8%.
Compressive Strength Test:Ntsuam xyuas lub cib lub zog compressive (≥25 MPa) siv lub tshuab ntsuas thoob ntiaj teb
Thermal Shock Resistance Test:Tom qab 10 lub voj voog ntawm cua sov (1100 ℃) thiab txias (chav sov), xyuas cov kab nrib pleb (tsis pom cov kab nrib pleb).
Corrosion Resistance Test:Simulate furnace tej yam kev mob los kuaj lub cib tsis kam rau molten slag yaig ( yaig tus nqi ≤0.5mm / h).
Chemical Composition Analysis:Siv X-ray fluorescence spectrometry los txheeb xyuas MgO cov ntsiab lus (≥96%) thiab cov ntsiab lus carbon (8-12%).
Ntim thiab Cia:Cov cib tsim nyog tau ntim rau hauv cov thawv ntim dej los yog cov ntoo pallets, nrog cov ntaub ntawv pov thawj noo noo nyob ib puag ncig lawv kom tsis txhob nqus dej noo thaum thauj. Txhua pob tau sau nrog tus lej batch, hnub tsim khoom, thiab daim ntawv pov thawj kev soj ntsuam zoo rau kev taug qab.
Vim li cas thiaj xaiv Peb Magnesium Carbon Cib?
Peb cov txheej txheem tsim khoom nruj heev (los ntawm kev xaiv cov khoom siv raw mus rau tom qab ua tiav) kom ntseeg tau tias peb cov magnesium carbon bricks muaj kev ua tau zoo nyob rau hauv high-temperature industrial furnaces. Seb rau steelmaking converters, ladles, los yog lwm yam khoom siv kub, peb cov khoom muaj peev xwm:
Tiv thaiv kub txog 1800 ℃ tsis muaj softening lossis deformation ..
Tiv thaiv molten hlau thiab slag yaig, txuas rau lub tshuab hluav taws xob lub neej kev pab cuam los ntawm 30% + .
Txo kev saib xyuas zaus thiab cov nqi tsim khoom rau cov neeg siv khoom ..
Peb muab cov kev daws teeb meem raws li koj lub qhov cub hom, qhov loj me, thiab kev ua haujlwm. Tiv tauj peb hnub no kom paub ntau ntxiv txog peb cov txheej txheem magnesium carbon cib ntau lawm lossis kom tau txais ib daim ntawv tso cai pub dawb!
Post lub sij hawm: Oct-29-2025
