Inta badan alaabta ceeriin ee alaabta refractory waxaa iska leh maaddooyinka bismuth ee aan caaga ahayn, wayna adagtahay in iyaga laftooda loogu farsameeyo badeecooyin dhammays tiran.Sidaa darteed, waxaa lagama maarmaan ah in la isticmaalo binder organic dibadda ah ama xidhe inorganic ama xidhe isku dhafan.Noocyada kala duwan ee alaabta ceeriin ee khaaska ah ayaa lagu soo rogay si adag oo sax ah si ay u sameeyaan wax dhoobo ah oo leh qaybinta qaybinta isku midka ah, qaybinta biyaha isku midka ah, caag gaar ah iyo qaab-dhismeed fudud iyo alaab-dhammaaneed.Waa lagama maarmaan in la qaato habka wax soo saarka oo leh waxtar sare leh, saameyn isku dhafan oo wanaagsan iyo isku-dhafka ku habboon.
(1) Walxaha is-waafajinta
Billet (dhoobada) waxaa laga samayn karaa badeecad leh cufnaanta ugu sarreysa iyadoo la dooranayo halbeeg macquul ah.Aragti ahaan, goob hal cabbir ah oo inches kala duwan ah iyo walxo kala duwan ayaa la tijaabiyay, cufnaanta badanuna waxay ahayd mid isku mid ah.Si kastaba ha ahaatee, porosity-ku wuxuu ahaa 38% ± 1%.Sidaa darteed, kubbadda hal-geeska ah, cufnaanta bulk iyo porosity waxay ka madax bannaan yihiin cabbirka kubbadda iyo hantida maaddada, waxaana had iyo jeer lagu dhejiyaa qaab saddex geesood ah oo leh nambar iskudubarid 8.
Habka isku dhufashada aragtida ee qayb ka mid ah hal cabbir oo isku mid ah ayaa leh cube, tiir keli ah, tiir isku dhafan, qaab ahraamta ah, iyo tetrahedron.Hababka kala duwan ee isku dhafka ah ee isku midka ah ee cabbirka isku midka ah ayaa lagu muujiyay sawirka 24. Xiriirka ka dhexeeya habka dhigaalka ee qaybaha hal-abuurka ah iyo porosity ayaa lagu muujiyay shaxda 2-26.
Si loo kordhiyo cufnaanta bulk ee maaddada iyo in la yareeyo porosity, goob ka mid ah cabbirka qaybaha aan sinnayn ayaa la isticmaalaa, taas oo ah, tiro cayiman oo ka mid ah qaybaha yaryar ayaa lagu daraa xajmiga weyn si loo kordhiyo halabuurka wareegga, iyo xiriirka inta u dhaxaysa mugga ay haysay goobtu iyo daloolnimada ayaa lagu muujiyay shaxda.2-27.
Iyada oo maaddooyinka clinker-ka, qaybaha aan fiicneyn waa 4. 5 mm, qaybaha dhexdhexaadka ah waa 0.7 mm, qaybaha ganaaxa waa 0.09 mm, iyo isbeddelka porosity clinker ee clinker ayaa lagu muujiyay sawirka 2-5.
Laga soo bilaabo Jaantuska 2-5, qaybaha aan fiicneyn waa 55% ~ 65%, qaybaha dhexdhexaadka ah waa 10% ~ 30%, iyo budada ganaaxa waa 15% ~ 30%.Xumaanta muuqata waxaa lagu dhimi karaa 15.5%.Dabcan, maaddooyinka qalabka dib-u-celinta gaarka ah ayaa si habboon loo hagaajin karaa iyadoo loo eegayo sifooyinka jireed iyo qaabka walxaha walxaha.
(2) Wakiilka dammaanadda ee alaabada dib-u-celinta gaarka ah
Iyada oo ku xidhan nooca walxaha dib-u-celinta gaarka ah iyo habka qaabaynta, xidhayaasha la isticmaali karo waa:
(1) Habka grouting, cirridka carabiga, polyvinyl butyral, hydrazine methyl cellulose, sodium acrylate, sodium alginate, iyo wixii la mid ah.
(2) Habka tuujinta, oo ay ku jiraan saliidaha, glycols,
Khamriga Polyvinyl, methyl cellulose, istaarij, dextrin, maltose iyo glycerin.
(3) Habka lagu duro dhuka kulul, xirayaashu waa: paraffin wax, beeswax, saliidaha: oleic acid, glycerin, stearic acid iyo wixii la mid ah.
(4) Habka shubista, wakiilka isku xidhka: methyl cellulose, ethyl cellulose, cellulose acetate, polyvinyl butyral, polyvinyl alkohol, acrylic;balaastikada: polyetylen glycol, dioctane Phosphoric acid, dibutyl peroxide, iwm.;wakiilka kala firdhiya: glycerin, oleic acid;dareeraha: ethanol, acetone, toluene, iyo wixii la mid ah.
(5) Habka la isku duro, polyetylen resin thermoplastic, polystyrene, polypropylene, acetyl cellulose, resin propylene, iwm.saliidda: stearic acid.
(6) Habka cadaadiska isostatic, alkolada polyvinyl, methyl cellulose, iyadoo la isticmaalayo dareeraha qashinka saxarka sulfite, fosfat iyo cusbada kale ee aan organic marka la samaynayo pellets.
(7) Habka saxaafadda, methyl cellulose, dextrin, alkolada polyvinyl, dareeraha qashinka saxarka sulfite, sharoobada ama cusbada kala duwan ee aan organic;dareeraha qashinka saxarka sulfite, methyl cellulose, ciridka arabic, dextrin ama inorganic iyo inorganic acid cusbada, sida phosphoric acid ama fosfatetada.
(3) Isku darka alaabada dib u celinta gaarka ah
Si loo hagaajiyo sifooyinka gaarka ah ee alaabta dib-u-celinta khaaska ah, xakamee beddelka qaabka crystal ee maqaalka, yaree heerkulka dabka ee maqaalka, oo ku dar qadar yar oo isku dhafan alaabta.Isku-dhafkan ayaa ah inta badan oksaydhyada birta, oksaydhyada aan biraha ahayn, oksaydhyada birta ah ee dhifka ah ee dhulka, fluoride, borides iyo fosfatetada.Tusaale ahaan, ku darida 1% ~ 3% boric acid (H2BO3) γ-Al2O3 waxay kor u qaadi kartaa beddelka.Ku darida 1% ilaa 2% TiO2 ee Al2O3 waxay si weyn u dhimi kartaa heerkulka dabka (qiyaastii 1600 ° C).Ku darida TiO2, Al2O3, ZiO2, iyo V2O5 ee MgO waxay kor u qaadaa korriinka miraha cristabalite waxayna hoos u dhigtaa heerkulka dabka ee alaabta.Ku darida CaO, MgO, Y2O3 iyo waxyaabo kale oo lagu daro walxaha ceeriin ee ZrO2 ayaa laga dhigi karaa xal adag oo cubic zirconia ah kaas oo degan heerkulka qolka ilaa 2000 °C ka dib daaweynta heerkulka sare.
(4) Habka iyo qalabka isku dhafka
Habka isku dhafka qalalan
Isku-dhafka xooggan ee ka soo horjeeda ee ay soo saartay Shandong Konyle wuxuu leeyahay mug dhan 0.05 ~ 30m3, oo ku habboon isku dhafka budada kala duwan, granules, flakes iyo walxo hoose oo hooseeya, waxaana lagu qalabeeyaa dareeraha wax lagu daro iyo qalabka buufinta.
2. Habka isku dhafka qoyan
Habka isku dhafka qoyan ee caadiga ah, maaddooyinka alaabta ceeriin ee kala duwan ayaa lagu dhejiyaa isku-dhafka meeraha oo ku qalabaysan daboolka ilaalinta si loo shiido ganaax.Ka dib markii slurry la sameeyo, caag ah iyo admixtures kale ayaa lagu daraa si ay u hagaajiyaan cufnaanta dhoobada, iyo isku dar ah si fiican loo qaso in a usheeda dhexe usheeda dhexe dhoobo dhoobo ah, iyo granulated iyo qallajisay qalajiyaha granulation buufin ah.
Isku-darka meeraha
3. Habka isku dhafka caagga ah
Si loo soo saaro hab isku dhafan oo heer sare ah oo loogu talagalay badeecad gaar ah oo soo celinaysa meel bannaan oo ku habboon samaynta caagga ah ama samaynta dhoobada.Habkan, alaabta ceeriin ee kala duwan, isku-darka, balaastikada, iyo saliidaha iyo biyaha ayaa si fiican loogu qasi doonaa qasaha meeraha, ka dibna la qaso oo lagu qaso qaso wax-ku-ool ah oo waxtar leh si looga saaro xumbo dhoobada.Si loo hagaajiyo caagagga dhoobada, dhoobada waxaa lagu daraa walxaha duugoobay, dhoobada waxaa lagu daraa isku dhafka labaad ee mashiinka dhoobada ka hor inta aan la dhajin.Koneile wuxuu soo saaraa wax-ku-oolnimo sare iyo isku-daryeyaal awood leh sida hoos ku cad:
Isku-darka hufan oo awood leh
Isku darka ka soo horjeeda
4. Habka isku dhafka semi-qallalan
Ku habboon hababka isku dhafka leh qoyaan hoose.Isticmaalka habka isku-dhafka qallalan ee semi-qallalan ayaa looga baahan yahay alaabta dib-u-soo-celinta gaarka ah kuwaas oo mashiinka lagu sameeyay maaddooyinka granular (qalafsan, dhexdhexaad ah iyo maaddooyin saddex heer ah oo wanaagsan).Maaddooyinka waxaa lagu fuliyaa qasiyaha ciidda, warshad qoyan, qase meeraha ama qasbi qasbid.
Habka isku darka ayaa ah in marka hore la isku daro darajooyinka kala duwan ee granules, lagu daro xalalka biyaha leh ee ka kooban binder (aan dabiici ahayn ama organic), oo lagu daro budada isku dhafan ee isku dhafan (oo ay ku jiraan gargaarka dabka, wakiilka ballaarinta, iyo waxyaabo kale).Wakiilka) ayaa si fiican isku dhafan.Waqtiga isku dhafka guud waa 20 ~ 30min.dhoobada isku dhafan waa in ay ka hortagtaa kala soocida xajmiga walxaha, biyahana waa in si siman loo qaybiyaa.Haddii loo baahdo, walxaha dhoobada ah waa in si habboon loo xayiraa inta lagu jiro qaabeynta.
Qoyaanka qoyaanka ah ee dhoobada alaabta la sameeyay waxaa lagu xakameynayaa 2.5% ilaa 4%;Maaddada qoyaanka ee alaabta dhoobada qaabaysan waxaa lagu xakameynayaa 4.5% ilaa 6.5%;iyo nuxurka qoyaanka ee sheyga qaabaysan ee gariiraya waxa lagu xakameynayaa 6% ilaa 8%.
(1) Waxqabadka farsamada ee taxanaha CMP ee isku dhafka meeraha tamarta waxtarka leh ee ay soo saartay Kone.
(2) Waxqabadka farsamada ee qasiyaha ciidda qoyan
5. Habka isku dhafka dhoobada
Habka isku dhafka dhoobada waxaa loogu talagalay soo saarista alaabada dhoobada ah ee gaarka ah, gaar ahaan dhoobada dhoobada ee gypsum mulding moolding, qaabaynta shubka iyo qaabeynta duritaanka.Habka hawlgalka ayaa ah in la isku daro walxo cayriin oo kala duwan, wakiilada xoojinta, wakiilada joojinta, isku-darka iyo 30% ilaa 40% biyaha nadiifka ah ee kubbadda lagu shubo waqti., laga sameeyey dhoobo dhoobo ah oo wax lagu dhejiyo.Habka samaynta dhoobada, waa lagama maarmaan in la xakameeyo cufnaanta iyo pH ee dhoobada iyadoo loo eegayo sifooyinka alaabta iyo shuruudaha dhoobada lafteeda.
Isku-darka awoodda leh ee ka soo horjeeda
Qalabka ugu muhiimsan ee loo isticmaalo habka isku dhafka dhoobada waa mashiinka kubbadda, kombareeyaha hawada, ka saarista birta qoyan, bamka dhoobada, qalabka nadiifiyaha ah, iyo wixii la mid ah.
6. Habka isku dhafka kuleylka
Paraffin iyo resin-ku-salaysan xidhayaasha waa walxo adag (ama viscous) heerkulka caadiga ah, lagumana qasi karo heerkulka qolka, waana in la kululeeyaa oo la qaso.
Paraffin waxa loo isticmaalaa sida xidhe ahaan marka la isticmaalayo habka shubidda dhinta kulul.Sababtoo ah barta dhalaalaysa ee dhukaydu waa 60 ~ 80 ° C, barafkiina waxaa lagu kululeeyaa in ka badan 100 ° C marka la isku daro oo uu leeyahay dareere wanaagsan.Kadibna alaabta ceeriin ee budada ah ayaa lagu daraa paraffin dareeraha ah, ka dib marka si buuxda loo qaso oo la isku daro, walxaha waa la diyaariyaa.Keega waxku waxa uu sameeyaa shubid kulul.
Qalabka ugu muhiimsan ee isku dhafka ah ee kululaynta isku-dhafka waa kicinta kuleylka leh.
Waqtiga boostada: Oct-20-2018