Kwisanti yokuphosa, ngaphezulu kwe-95% isebenzisa isanti ye-silica. Olona ncedo lukhulu lwesanti ye-silica kukuba ayinaxabiso kwaye kulula ukuyifumana. Nangona kunjalo, izinto ezingalunganga zesanti ye-silica nazo ziyabonakala, ezifana nokuzinza okungahambi kakuhle kwe-thermal, utshintsho lwesigaba sokuqala lwenzeka malunga ne-570 ° C, izinga eliphezulu lokunyuka kwe-thermal, kulula ukuphuka, kwaye uthuli oluveliswa yikhefu luyingozi kakhulu kwimpilo yabantu. . Ngexesha elifanayo, kunye nophuhliso olukhawulezayo lwezoqoqosho, isanti ye-silica isetyenziswa kakhulu kwishishini lokwakha, ishishini leglasi, iikeramics kunye namanye amashishini. Kukho ukunqongophala kwesanti ye-silica ekumgangatho ophezulu kunye nezinzile. Ukufumana ababambeleyo yingxaki engxamisekileyo kwihlabathi liphela.
Namhlanje makhe sithethe ngomahluko kwezinye iisanti ekrwada eqhelekileyo kwishishini Foundry, ngokutsho sndfoundry iqela iminyaka emininzi amava, kwakhona bamkele abahlobo abaninzi ukujoyina intetho.
1.Iisanti ezikrwada eziqhelekileyo kwi-Foundry
1.1 Isanti yendalo
Isanti yendalo, evela kwindalo, njengesanti ye-silica, isanti yechromite, isanti ye-zircon, isanti yomnquma we-magnesium njl.
1.2 Isanti eyenziweyo
Njengesanti ye-silica eyenziweyo, uthotho lwe-aluminium silicate eyenziwe ngesanti eyenziweyo, njl.
Apha ikakhulu sazisa aluminiyam silicate uthotho eyenziwe spherical sand.
2. I-Aluminiyam silicate uthotho lwesanti eyenziweyo engqukuva
Uthotho lwesanti ye-aluminium silicate eyenziweyo engqukuva, ekwabizwa ngokuba "yisanti yeceramic Foundry", "Cerabeads", "ceramic beads", "ceramsite", "Synthetic spherical sand for casting (isanti yeNyanga)", "mullite beads", "high refractoriness spherical". isanti", "Ceramcast", "Super sand", njl., akukho magama afanayo kwihlabathi kunye nemigangatho nayo iyahluka. (Sibiza isanti ye-ceramic kweli nqaku)
Kodwa kukho iingongoma ezintathu ezifanayo ukuzichonga ngolu hlobo lulandelayo:
A. Ukusebenzisa imathiriyeli ye-aluminium silicate refractory (i-bauxite, i-kaolin, amatye anqabileyo atshisiweyo, njl.njl.) njengemathiriyeli ekrwada,
B. Amasuntswana esanti angqukuva emva kokunyibilika okanye ukuntywila;
C. Ukwakhiwa kweekhemikhali ikakhulu kuquka i-Al2O3, i-Si2O, i-Fe2O3, i-TiO2 kunye nezinye i-oxide.
Ngenxa yokuba baninzi abavelisi baseChina besanti ye-ceramic, kukho imibala eyahlukeneyo kunye nomphezulu ovela kwiinkqubo ezahlukeneyo kunye nendawo eyahlukileyo yoqobo yezinto ezikrwada, kunye nomxholo owahlukileyo we-Al2O3 kunye nobushushu bemveliso.
3. Imilinganiselo yesanti ye-Foundry
| Skunye ne | NRD/℃ | T.E(20-1000℃)/% | B.D./(g/cm3) | E. | TC (W/mk) | pH |
| FCS | ≥1800 | 0.13 | 1.8-2.1 | ≤1.1 | 0.5-0.6 | 7.6 |
| SCS | ≥1780 | 0.15 | 1.4-1.7 | ≤1.1 | 0.56 | 6-8 |
| Zircon | ≥1825 | 0.18 | 2.99 | ≤1.3 | 0.8-0.9 | 7.2 |
| Cihromite | ≥1900 | 0.3-0.4 | 2.88 | ≥1.3 | 0.65 | 7.8 |
| Olive | 1840 | 0.3-0.5 | 1.68 | ≥1.3 | 0.48 | 9.3 |
| Silica | 1730 | 1.5 | 1.58 | ≥1.5 | 0.49 | 8.2 |
Qaphela: Imveliso eyahlukeneyo kunye nesanti yendawo, idatha iya kuba nomahluko othile.
Nantsi nje idatha eqhelekileyo.
3.1 Iimpawu ezipholileyo
Ngokwefomula yomthamo wokupholisa, amandla okupholisa esantini anxulumene ikakhulu nezinto ezintathu: ukuhanjiswa kwe-thermal, umthamo wobushushu obuthile, kunye nokuxinana kokwenyani. Ngelishwa, ezi zinto zintathu zahlukile kwintlabathi evela kubavelisi abahlukeneyo okanye imvelaphi, ngoko ke kuphuhliso Ngexesha lenkqubo yokufaka ukufakwa kwentsimbi engagugiyo, sifumanise ukuba isanti yechromite ineyona mpembelelo intle yokupholisa, isantya sokupholisa ngokukhawuleza, kunye nokunganxibi okuphezulu. ukuqina, kulandelwa yisanti yeceramic edityanisiweyo, isanti yesilica, kunye nesanti ediyiweyo yeceramic. , ubunzima obunganyangekiyo bokugqwesa buya kuba buphantsi ngamanqaku angama-2-4.
3.2 Ukudibanisa ukuthelekisa
Njengomfanekiso ongasentla, iintlobo ezintathu zesanti zigcina iiyure ezi-4 kunye ne-1590 ℃ kwiziko.
Ukuwa kwesanti ye-ceramic sintered yeyona ilungileyo. Le propathi isetyenziswe ngempumelelo kwimveliso yeAluminiyam.
3.3 Ukuthelekisa ukomelela kwesanti ngundo kwisiseko
ATiiparameters zeresin egqunywe ngundo lwesanti yesiseko
| Iintlabathi | HTS(MPa) | RTS(MPa) | AP(Pa) | LE Ireyithi (%) |
| CS70 | 2.1 | 7.3 | 140 | 0.08 |
| CS60 | 1.8 | 6.2 | 140 | 0.10 |
| CS50 | 1.9 | 6.4 | 140 | 0.09 |
| CS40 | 1.8 | 5.9 | 140 | 0.12 |
| RSS | 2.0 | 4.8 | 120 | 1.09 |
Phawula:
1. Uhlobo lwe-resin kunye nesixa ziyafana, isanti yokuqala yi-AFS65 ubukhulu, kunye neemeko ezifanayo zokugquma.
2. CS: Isanti yeCeramic
RSS: Isanti yeSilica egcadiweyo
HTS: Amandla okuqina ashushu.
RTS: Amandla okuqina kwegumbi
AP: Ukungena komoya
Ixabiso le-LE: Izinga lokwandiswa kweLiner.
3.4 Umgangatho ogqwesileyo wokubuyiselwa kwesanti ye-ceramic
Thermal kunye nomatshini reclamation indlela zombini elungileyo efanelekileyo isanti eludongeni, ngenxa amandla ayo amasuntswana aphezulu, ukuqina eliphezulu, ukumelana ukunxitywa eliphezulu, isanti yeseramic phantse lelona xesha liphezulu lokuvuselela isanti ekrwada kwishishini lesanti Foundry. Ngokwedatha yokubuyisela abathengi bethu basekhaya, isanti ye-ceramic inokubuyiselwa ubuncinci amaxesha angama-50. Nazi ezinye iimeko ezabelana ngazo:
Kwiminyaka elishumi yakutshanje, ngenxa yesanti ye-ceramic yokuchasa okuphezulu, imilo yebhola enokunceda ukunciphisa ukongezwa kwe-resin malunga ne-30-50%, ukubunjwa kwecandelo elifanayo kunye nokusabalalisa ubungakanani beenkozo ezizinzile, ukunyanzeliswa komoya okulungileyo, ukwanda okuncinci kwe-thermal kunye neempawu eziphezulu zokuhlaziya ngokutsha njl. njengezinto ezingathathi hlangothi, zisebenza ngokubanzi kwii-castings ezininzi ezibandakanya intsimbi etyhidiweyo, intsimbi etyhidiweyo, i-aluminiyam ephosiweyo, ubhedu olutyhidiweyo, kunye nentsimbi engenasici. Iinkqubo zokufunyanwa kwesicelo zinesanti egqunywe ngeResin, isanti yebhokisi ebandayo, inkqubo yesanti yoshicilelo ye-3D, isanti ye-No-bake resin, inkqubo yoTyalo-mali, inkqubo ye-foam elahlekileyo, inkqubo yeglasi yamanzi njl.
Ixesha lokuposa: Jun-15-2023
