Ha ho etsoa lehlabathe, ho feta 95% e sebelisa lehlabathe la silica. Molemo o moholo oa lehlabathe la silika ke hore o theko e tlaase ebile o bonolo ho o fumana. Leha ho le joalo, mefokolo ea lehlabathe la silika le eona e totobetse, joalo ka botsitso bo fokolang ba mocheso, phetoho ea mohato oa pele e etsahala hoo e ka bang 570 ° C, tekanyo e phahameng ea ho atolosa mocheso, ho bonolo ho senya, 'me lerōle le hlahisoang ke khefu le kotsi haholo ho bophelo bo botle ba batho. . Ka nako e ts'oanang, ka tsoelo-pele e potlakileng ea moruo, lehlabathe la silika le sebelisoa haholo indastering ea kaho, indasteri ea khalase, li-ceramics le liindasteri tse ling. Ho na le khaello ea lehlabathe la silika la boleng bo holimo le le tsitsitseng. Ho fumana libaka tsa eona ke bothata bo potlakileng lefatšeng lohle.
Kajeno a re ke re bue ka phapang ea tse ling tse tloaelehileng lehlabathe e tala ka Foundry khoebo, ho ea ka sndfoundry sehlopha lilemo liphihlelo tse ngata, hape amohela metsoalle e mengata ho kopanela puo.
1.Tloaelehileng Raw Sands in Foundry
1.1 Lehlabathe la tlhaho
Lehlabathe la tlhaho, le tsoang tlhahong, joalo ka lehlabathe la silika, lehlabathe la chromite, lehlabathe la zircon, lehlabathe la mohloaare oa magnesium jj.
1.2 Lehlabathe la maiketsetso
Joalo ka lehlabathe la Artificial silica, letoto la aluminium silicate lehlabathe la maiketsetso la spherical, jj.
Mona re hlahisa haholo-holo letoto la aluminium silicate lehlabathe la maiketsetso la spherical.
2. Aluminium silicate letoto la lihlooho tse maiketsetso spherical lehlabathe
Aluminium silicate series artificial spherical sand, eo hape e tsejoang e le "ceramic foundry sand", "Cerabeads", "ceramic beads", "ceramsite", "Synthetic spherical sand for casting (Lehlabathe la Khoeli)", "mullite beads", "high refractoriness spherical". lehlabathe", "Ceramcast", "Super sand", joalo-joalo, ha ho na mabitso a tšoanang lefatšeng 'me litekanyetso le tsona li fapane. (Re bitsa lehlabathe la ceramic sehloohong sena)
Empa ho na le lintlha tse tharo tse tšoanang ho li khetholla ka tsela e latelang:
A. Ho sebelisa lisebelisoa tsa aluminium silicate refractory (bauxite, kaolin, mahakoe a chesitsoeng, joalo-joalo) joalo ka lisebelisoa tse tala,
B. Likaroloana tsa lehlabathe li chitja ka mor'a ho qhibiliha kapa ho qoela;
C. The haholo-holo metsoako ea lik'hemik'hale ho akarelletsa Al2O3, Si2O, Fe2O3, TiO2 le oxide e ling.
Ka lebaka la ho na le lihlahisoa tse ngata Chaena tsa lehlabathe la ceramic, ho na le mebala e sa tšoaneng le holim'a metsi ho tloha lits'ebetsong tse fapaneng le sebaka se fapaneng sa pele sa thepa e tala, le lihlahisoa tse fapaneng tsa Al2O3 le mocheso oa lihlahisoa.
3. Mekhahlelo ea lehlabathe bakeng sa Foundry
| Sles | 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 |
| Chromite | ≥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 |
Tlhokomeliso: Lifate tse fapaneng le lehlabathe la libaka, data e tla ba le phapang e itseng.
Mona ke lintlha tse tloaelehileng feela.
3.1 Litšobotsi tse monate
Ho latela mokhoa oa ho tsikitlanya, matla a lehlabathe a batang a amana haholo le lintlha tse tharo: mocheso oa mocheso, matla a khethehileng a mocheso le boima ba 'nete. Ka bomalimabe, lintlha tsena tse tharo li fapane bakeng sa lehlabathe le tsoang ho bahlahisi kapa tšimoloho e fapaneng, kahoo nts'etsopele Nakong ea ts'ebetso ea ts'ebetso ea lisebelisoa tsa tšepe tse sa sebetseng, re fumane hore lehlabathe la chromite le na le phello e ntle ka ho fetisisa ea ho pholile, lebelo la ho pholile ka potlako, le ho se sebetse ho phahameng. ho thatafala, ho lateloa ke lehlabathe la ceramic le kopantsoeng, lehlabathe la silika, le lehlabathe la sintered ceramic. , boima bo sa tsitsang ba ho lahla bo tla fokotseha ka lintlha tse 2-4.
3.2 Collapsibility bapisa
Joalo ka setšoantšo se kaholimo, mefuta e meraro ea lehlabathe e boloka lihora tse 4 le 1590 ℃ ka seboping.
The sintered ceramic sand collapsibility ke eona e ntle ka ho fetisisa. Thepa ena e boetse e sebelitse ka katleho lihlahisoa tsa Aluminium casting.
3.3 Matla a bapisoa le hlobo ea lehlabathe bakeng sa setsi sa motheo
ATlitekanyo tsa resin e koahetsoeng ka hlobo ea lehlabathe bakeng sa setsi
| Mahlabathe | HTS(MPa) | RTS(MPa) | AP(Pa) | LE Reite (%) |
| 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 |
Hlokomela:
1. Mofuta oa resin le palo li tšoana, lehlabathe la pele ke boholo ba AFS65, le maemo a tšoanang a ho roala.
2. CS: Lehlabathe la ceramic
RSS: Lehlabathe la silika e halikiloeng
HTS: Matla a chesang a chesang.
RTS: Matla a tsitsitseng ka kamoreng
AP: Ho kenella ha moea
Lebelo la LE: Sekhahla sa katoloso ea liner.
3.4 Sekhahla se setle sa ho khutlisa lehlabathe la ceramic
Mocheso le mochini reclamation mokhoa ka bobeli e ntle loketseng e lehlabathe ceramic, ka lebaka la 'phatsa ea eona e phahameng matla, phahameng thatafalloa, phahameng apara ho hanyetsa, ceramic lehlabathe hoo e ka bang ke phahameng ka ho fetisisa nchafatso linako tse tala lehlabathe ka lehlabathe foundry khoebo. Ho latela lintlha tsa bareki ba rona ba malapeng, lehlabathe la ceramic le ka khutlisoa bonyane makhetlo a 50. Mona ke tse ling tsa linyeoe tse arolelanoang:
Lilemong tse leshome tse sa tsoa feta, ka lebaka la lehlabathe la ceramic le phahameng, sebopeho sa bolo se ka thusang ho fokotsa ho eketsoa ha resin ho pota 30-50%, sebopeho sa karolo e ts'oanang le kabo e tsitsitseng ea boholo ba lijo-thollo, moea o kenang hantle, katoloso e nyane ea mocheso le litšoaneleho tse ncha tse nchafalitsoeng, joalo-joalo. e le thepa e sa nke lehlakore, e sebetsa haholo ho li-castings tse ngata tse kenyelletsang tšepe e entsoeng ka tšepe, tšepe e entsoeng ka tšepe, aluminium e entsoeng ka tšepe, koporo e entsoeng le tšepe e sa hloekang. Ts'ebetso ea ho theha kopo e na le lehlabathe le koahetsoeng ka Resin, lehlabathe la Cold box, ts'ebetso ea lehlabathe la khatiso la 3D, lehlabathe le sa bake la resin, Ts'ebetso ea matsete, ts'ebetso ea foam e lahlehileng, ts'ebetso ea khalase ea metsi jj.
Nako ea poso: Jun-15-2023
