Ntawm no yog qhov hais txog cov ntaub ntawv refractory: cov lej uas ua rau cov neeg yuav khoom muaj teeb meem tsis yog cov nyob rau sab pem hauv ntej. Refractoriness tau txais cov ntawv xov xwm, tab sis nws yog tus lej tsawg tshaj plaws ntawm daim ntawv. Pom meej porosity, refractoriness nyob rau hauv load, txias crushing zog, thiab mus tas li hloov linear - plaub qhia rau koj seb ib lub cib yuav ciaj sia koj lub qhov cub. Refractoriness tsuas qhia koj qhov twg nws melts. Phau ntawv qhia no piav qhia txhua yam khoom siv refractory, nws kwv yees li cas hauv kev pabcuam, thiab cov txiaj ntsig zoo uas peb pom thoob plaws qib cib. Cov lej tuaj ntawm peb lub chaw kuaj QC hauv Qingdao, qhov twg txhua pawg tau txais plaub qhov kev xeem ua ntej nws xa khoom.
Dab tsi yog Refractory Properties thiab Vim Li Cas Lawv Tseem Ceeb
Refractory zog yog ntsuas tus lej ntawm cov ntaub ntawv cib: tshuaj ntsuam xyuas, refractoriness, ntom, lub zog, porosity, thiab lwm yam. Lawv feem ntau teb ib lo lus nug - cov khoom no puas yuav ua haujlwm hauv qhov cub no?
Plaub qhov tseem ceeb tshaj plaws hauv kev xyaum yog pom meej porosity, refractoriness nyob rau hauv load (RUL), txias crushing zog (CCS), thiab mus tas li linear hloov (PLC). Ua ke lawv npog plaub txoj hauv ob sab phlu: nkag mus, softening, crushing, thiab dimensional hloov.
Cov neeg yuav khoom uas nyeem tsuas yog tus naj npawb refractoriness tau xav tsis thoob hauv kev pabcuam. Lub cib tsis yaj - nws softens nyob rau hauv load, los yog lub slag nkag mus rau hauv lub pores, los yog nws shrinks thiab cov pob qij txha qhib. Txhua qhov kev ua tsis tiav no qhia txog ib qho ntawm plaub tus lej no. Tias yog vim li cas qhov kev tshuaj xyuas cov khoom refractory belongs ua ntej kev yuav khoom, tsis yog tom qab reline.
Ib qho ntxiv ntawm cov khoom refractory: lawv drift. Cov khoom siv raw ntau, nias lub zog, lub sijhawm tua - txhua tus hloov tus lej kawg me ntsis. Tias yog vim li cas peb sim ib batch, tsis yog ib xyoos, thiab vim li cas COA ntawm koj cov khoom xa tuaj yog tus lej nkaus xwb uas suav. Daim ntawv qhia qhov tseem ceeb yog qhov ambition; COA qhov tseem ceeb yog qhov tseeb.
Cov khoom sib txawv refractory tseem ceeb ntawm cov ntsiab lus sib txawv hauv kev yuav khoom. Porosity thiab chemistry txiav txim siab qib. RUL thiab PLC txiav txim siab seb nws puas muaj sia nyob hauv lub luag haujlwm. CCS txiav txim siab seb nws puas thauj khoom thiab txhim kho yam tsis muaj kev puas tsuaj. Ntsuas lawv nyob rau hauv qhov kev txiav txim thiab cov ntaub ntawv nyeem zoo li ib txoj hauv kev tsis yog phab ntsa ntawm cov lej.
Pom pom Porosity: Tus lej uas twv ua tsis tiav
Pom tseeb porosity ntsuas qhov ntim ntawm qhov qhib qhov hws hauv lub cib raws li qhov feem pua, kuaj los ntawm kev hloov dej hauv qab lub tshuab nqus tsev lossis kub kub, ib GB / T 2997 thiab ASTM C20. Txoj kev sim no yooj yim thiab qhov tshwm sim yog lim hiam: ntawm tag nrho cov khoom refractory ntawm cov ntaub ntawv, porosity yog ib qho uas kwv yees ua tsis tiav ntxov tshaj plaws. Tus lej yog lub qhov rooj - qhib qhov pores yog li cas slag, hlau, thiab alkali nkag mus rau hauv lub cib.
Siab porosity kwv yees peb qhov ua tsis tiav. Slag nkag mus, uas corrodes lub cib los ntawm sab hauv. Thermal shock puas, vim qhov pores ua cua sov tsis zoo thiab tsim kev ntxhov siab. Thiab tsis muaj zog, vim hais tias ib tug ntxeem tau lub cev muaj tsawg zog qauv los nqa load. Tias yog vim li cas porosity zaum nyob rau sab saum toj ntawm cov khoom refractory sau tus neeg yuav khoom yuav tsum kuaj ua ntej.
Qhov tseem ceeb ntawm qib: silica cib khiav 18-24% pom meej porosity. Fireclay khiav 20-25%. High alumina khiav 18-23%. Qhov ntom ntom magnesia cib khiav 15-18%.Magnesia carbon cibyog qhov outlier ntawm 3-4%, vim hais tias cov pa roj carbon puv lub pores. PebCov ntaub ntawv ua ntej ntawm silica cib pom meej porositynpog cov qib silica kom ntxaws.
Ib qho yuam kev ntawm tus neeg yuav khoom: kho qhov porosity raws li cov cuab yeej ruaj khov. Nws txawv nrog lub siab nias, kub kub, thiab cov khoom siv raw zoo - ob lub cib nrog tib cov chemistry tuaj yeem sib txawv ntawm tsib lub ntsiab lus porosity. Nyeem tus lej ntawm COA, tsis yog tus lej hauv phau ntawv qhia.
Refractoriness Nyob rau hauv Load (RUL): Qhov Kub Kub tiag tiag -Kev Ntsuas Lub Zog
RUL ntsuas qhov kub ntawm lub cib nyob rau hauv ib qho chaw ruaj khov - feem ntau 0.2 MPa - deforms los ntawm tus nqi txhais, ib GB / T 5989 thiab ASTM C16. Nws yog cov cuab yeej refractory uas tsom iav qhov kev pab cuam lub qhov cub: cov phab ntsa nqa cov khoom thaum nws kub. Refractoriness qhia koj lub melting point ntawm cov khoom. RUL qhia rau koj thaum lub cib nres thauj khoom, uas yog qhov tshwm sim tiag tiag hauv phab ntsa rauv taws.
Qhov sib txawv ntawm ob tus lej yog qhov uas cov neeg yuav khoom ntes tau. Kev nyeem cov khoom refractory hauv khub - RUL nrog refractoriness, CCS nrog RUL - yog tus cwj pwm uas txuag cov ntaub. Lub cib tuaj yeem ntsuas 1,790℃refractoriness thiab soften nyob rau hauv load ntawm 1,500 degree. Rau ibsiab alumina cib, RUL feem ntau khiav 1,420-1,500℃nyob ntawm qib; rausilica cib, RUL zaum ze rau lub melting point, uas yog vim li cas silica tuav thiaj li zoo nyob rau hauv coke ncu. Rau fireclay, RUL khiav 1,300-1,400 degree.
Peb txoj cai: tsis txhob yuav ntawm refractoriness ib leeg. RUL yog tus lej uas kwv yees seb cov phab ntsa sawv, thiab nws yog ib tus neeg yuav khoom tsawg tshaj plaws nug. Rau cov neeg yuav khoom sib piv cov qhab nia, RUL yog cov cuab yeej uas cais kev lag luam los ntawm engineering. Ob lub cib uas zoo ib yam refractoriness kev ntsuam xyuas tuaj yeem sib txawv ntawm 150℃hauv RUL - qhov txawv yog qhov kev nyab xeeb, thiab nws yog cov cuab yeej refractory feem ntau ploj ntawm cov lus sib piv.
Cold Crushing Strength (CCS): Nws Ua Li Cas thiab Tsis Qhia Koj
CCS yog lub zog compressive ntawm lub cib ntawm chav tsev kub, ib GB / T 5072 thiab ASTM C 133 - lub zog xav tau los tsoo ib qho kev sim ntawm hydraulic xovxwm. Nws yog tus lej uas yooj yim tshaj plaws los ntsuas, yog li nws yog ib qho ntawm txhua daim ntawv teev cov ntaub ntawv, thiab nws yog cov cuab yeej refractory uas xa cov ntaub ntawv kev puas tsuaj tau sau txog.
CCS kwv yees peb yam hauv kev pabcuam: tiv thaiv kev puas tsuaj, ua haujlwm rau cov khoom siv thauj khoom, thiab tuav lub zog los ntawm kev thauj thiab kev teeb tsa. Qhov siab siab alumina cib khiav 40-60 MPa, fireclay khiav 25-40 MPa, thiab magnesia carbon cib khiav 35-50 MPa. Peb QC ntsuas CCS ntawm 200-tuj hydraulic xovxwm, thiab cov lej COA yog cov uas peb xa tuaj.
Dab tsi CCS tsis qhia rau koj: siab - qhov kub thiab txias. Lub cib nrog siab CCS tseem tuaj yeem muag hauv qab ntawm 1,400℃- qhov ntsuas CCS tshwm sim txias. Tias yog vim li cas ob lub zog refractory yuav tsum tau nyeem ua ke. Siab CCS nrog qis RUL txhais tau hais tias lub cib uas ua haujlwm zoo hauv lub vaj thiab ua tsis tiav hauv phab ntsa.
Peb QC khiav CCS ntawm txhua pawg - lub hom phiaj, qhov nruab nrab, thiab cov neeg tawm mus tag nrho mus rau COA. Yog vim li cas yooj yim: ntawm tag nrho cov refractory zog peb kuaj, CCS yog ib tug uas catches nias thiab firing teeb meem ntxov tshaj plaws.
Permanent Linear Change (PLC): Lub Ceeb Toom Shrinkage
PLC ntsuas ntau npaum li cas lub cib qhov ntev hloov tom qab tua hluav taws mus rau qhov ntsuas kub, raws li feem pua, ib GB / T 5988. Cov txiaj ntsig tsis zoo txhais tau tias shrinkage, qhov txiaj ntsig zoo txhais tau tias nthuav dav, thiab ob qho tib si yog qhov txaus ntshai nyob rau hauv ob sab - nws yog cov cuab yeej refractory feem ntau cov neeg yuav khoom pom tsuas yog tom qab lawv thawj qhov kev sib koom ua tsis tiav.
Shrinkage qhib cov pob qij txha ntawm cov cib. Expansion buckles phab ntsa thiab spalls lub cib ntsej muag. Txawm li cas los xij, hauv ob sab phlu poob nws cov qauv kev ncaj ncees, thiab qhov tsis ua haujlwm tshwm sim raws li qhov khoob, spalling, thiab hnav ntxov ntxov. Cov qib cib feem ntau tuav PLC hauv ± 0.5% ntawm lawv qhov ntsuas kub; tus lej sab nraud uas txhais tau hais tias lub cib tsis haum rau lub luag haujlwm nws raug rho tawm haujlwm.
PLC kuj piav qhia vim li cas thawj zaug -kev coj tus cwj pwm kub yog qhov tseem ceeb: lub cib uas ua rau ntawm thawj qhov kev sib tw hloov pauv tag nrho cov ntaub ntawv geometry. Qhov kev sim qhia rau koj ua ntej kev teeb tsa lub cib yuav ua li cas tom qab tua hluav taws, uas yog vim li cas nws nyob ntawm txhua COA. PLC yog qhov tsawg tshaj plaws nug- txog cov cuab yeej refractory thiab ib qho uas piav qhia txog kev ua tsis tiav hauv ob sab phlu feem ntau - ib txheej uas poob nws qhov sib koom ua ke nruj tshaj qhov kev sib tw feem ntau muaj teeb meem me me uas COA tau qhia tag nrho.
Yuav Ua Li Cas Nyeem Cov Refractory COA
COA tsim nyog nqa cov tshuaj ntsuam xyuas thiab cov lej ntawm lub cev: pom meej porosity, CCS, RUL, PLC, thiab ntau qhov ntom ntom, txhua tus qauv ntsuas. Nyeem nws raws li kev txiav txim, thiab nyeem plaub tus lej ua ke - chemistry qhia koj seb lub cib yog dab tsi, thiab lub cev refractory zog qhia koj seb nws yuav coj li cas hauv koj lub qhov cub.
Ua ntej txheeb xyuas cov tshuaj tshuaj tiv thaiv qib thov - alumina cov ntsiab lus yuav tsum phim lub npe qib. Tom qab ntawd txheeb xyuas qhov porosity thiab CCS tiv thaiv cov txiaj ntsig zoo rau qib; wide deviations txhais tau hais tias ib tug ntau lawm ntau lawm batch tshaj cov datasheet. Kuaj RUL tiv thaiv koj qhov kev pabcuam kub - yog RUL zaum hauv qab koj lub ntsej muag kub, lub cib tsis raug rau thaj tsam tsis hais lwm yam ntawm daim ntawv. Txheeb xyuas PLC rau tus nqi hauv ± 0.5% ntawm qhov ntsuas kub.
Plaub lub zog refractory no muaj nyob rau txhua COA vim lawv ua ke npog plaub hom kev ua tsis tiav: nkag mus, muag muag, crushing, thiab qhov loj me. COA uas teev tag nrho plaub, nrog rau cov qauv xeem, yog qhov tsawg kawg nkaus uas peb yuav txais los ntawm ib tus neeg muag khoom.
Covzoo li refractory ntau yamcov nplooj ntawv txhua tus muaj cov lej no hauv ib qib, yog li koj tuaj yeem sib piv ua ntej thov rau cov lus qhia. Yog tias tus neeg muag khoom tsis tuaj yeem tsim ib qho -COA ntau nrog rau plaub, qhov ntawd yog lub teeb liab - taug kev deb lossis nug yog vim li cas.
Ordering: Lub Sijhawm Leading, Them Nyiaj & Ntim
Lub sij hawm xa tuaj yog 15-20 hnub los ntawm kev tso nyiaj rau cov qauv cib, 25-35 hnub rau cov duab kev cai. Kev them nyiaj yog T / T nrog 30% tso nyiaj thiab 70% ua ntej xa zaub mov. Ntim yog ntoo pallets nrog shrink-wrap thiab kaum kev tiv thaiv.
Txhua lub nkoj xa nrog tag nrho COA - tshuaj ntsuam xyuas, pom meej porosity, CCS, RUL, PLC, thiab bulk ntom - tsis yog cov ntsiab lus, cov lej. Txhua cov cuab yeej refractory ntawm nws yog tus nqi kuaj, tsis yog daim ntawv qhia tus nqi. Peb kuaj txhua batch, thiab cov qauv khaws cia yog khaws cia ntawm ob sab.
Xa koj qhov chaw taws teeb rau peb thiab qhov kev pabcuam kub, thiab peb yuav lees paub qib nrog nws plaub tus lej hauv 24 teev - thiab yog tias cov lej tsis haum rau koj lub luag haujlwm, peb cov engineers yuav qhia koj ua ntej koj xaj. Peb cov lus hais ua haujlwm los ntawm tib lub zog refractory cov kev sim kuaj; tsis muaj daim ntawv qhia tus lej hauv peb tus nqi.
Cov kab hauv qab: plaub lub zog refractory uas kwv yees lub neej hauv cov ntaub ntawv yog qhov pom meej porosity, RUL, CCS, thiab PLC - nyeem lawv ua ke, tawm tsam koj qhov kev pabcuam, ntawm txhua qhov ntau. Ib daim ntawv teev cov ntaub ntawv uas nqa tag nrho plaub yog ib daim ntawv uas tsim nyog ntseeg. Xa koj lub luag haujlwm rau peb, thiab peb yuav xa cov lej.
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