Na nkedo ájá, ihe karịrị 95% na-eji ájá silica. Nnukwu uru nke ájá silica bụ na ọ dị ọnụ ala ma dị mfe ịnweta. Otú ọ dị, ihe ndị na-adịghị mma nke ájá silica na-apụtakwa ìhè, dị ka nkwụsi ike nke okpomọkụ na-adịghị mma, mgbanwe nke mbụ na-eme na ihe dịka 570 Celsius, ọnụ ọgụgụ dị elu nke okpomọkụ dị elu, dị mfe ịgbaji, na uzuzu sitere na nkwụsịtụ na-emerụ ahụ ike mmadụ. . N'otu oge ahụ, na mmepe ngwa ngwa nke akụ na ụba, a na-eji ájá silica eme ihe na ụlọ ọrụ ihe owuwu, ụlọ ọrụ iko, ceramics na ụlọ ọrụ ndị ọzọ. Enweghị ájá silica dị elu ma kwụsie ike. Ịchọta ndị nọchiri anya ya bụ nsogbu dị ngwa maka ụwa dum.
Taa ka anyị na-ekwu maka ihe dị iche nke ụfọdụ ndị nkịtị raw ájá na Foundry azụmahịa, dị ka sndfoundry otu ọtụtụ afọ ahụmahụ, na-anabatakwa ọzọ enyi isonyere okwu.
1.Sands Raw Common na Foundry
1.1 aja eke
Aja eke, nke sitere na okike, dị ka ájá silica, ájá chromite, ájá zircon, ájá oliv magnesium wdg.
1.2 ájá arụrụ arụ
Dị ka ájá silica Artificial, aluminum silicate series artificial sppherical sand, wdg.
N'ebe a, anyị na-ewebata aluminum silicate usoro wuru okirikiri ájá.
2. Aluminium silicate usoro wuru okirikiri ájá
Aluminom silicate usoro ájá okirikiri okirikiri, nke a makwaara dị ka "aja ceramic foundry", "Cerabeads", "seramiiki beads", "ceramsite", "Synthetic sppherical sand for casting (Moon sand)", "mullite beads", "high refractoriness sppherical spherical. ájá", "Ceramcast", "Super ájá", wdg, enweghị aha otu n'ụwa na ụkpụrụ dịkwa iche iche. (Anyị na-akpọ ájá ceramic n'isiokwu a)
Mana enwere otu isi ihe atọ iji mata ha dịka ndị a:
A. Iji aluminom silicate refractory ihe (bauxite, kaolin, bara nnukwu uru, wdg) dị ka akụrụngwa.
B. The ájá ahụ bụ okirikiri mgbe agbaze ma ọ bụ sintering;
C. The tumadi chemical mejupụtara gụnyere Al2O3, Si2O, Fe2O3, TiO2 na ndị ọzọ oxide.
N'ihi na e nwere ọtụtụ manufactures na China nke seramiiki ájá, e nwere dị iche iche na agba na elu si dị iche iche usoro na dị iche iche mbụ ebe nke akụrụngwa, na dị iche iche Al2O3 ọdịnaya na mmepụta okpomọkụ.
3. The paramita nke ájá maka fondry
| Sands | 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 |
| Silịka | 1730 | 1.5 | 1.58 | ≥1.5 | 0.49 | 8.2 |
Rịba ama: Ụlọ ọrụ dị iche iche na ebe ájá, data ahụ ga-enwe ihe dị iche.
Nke a bụ naanị data nkịtị.
3.1 Njirimara na-akụda mmụọ
Dị ka usoro ikike chilling si dị, ike oyi nke aja na-emetụtakarị ihe atọ: nrụgharị ọkụ, ikike okpomọkụ kpọmkwem, na ezigbo njupụta. N'ụzọ dị mwute, ihe atọ ndị a dị iche iche maka ájá sitere na ndị na-emepụta ihe dị iche iche ma ọ bụ mmalite, ya mere na mmepe N'oge usoro ntinye nke ihe nkedo ígwè na-eguzogide ọgwụ, anyị chọpụtara na ájá chromite nwere mmetụta kachasị mma na-ekpo ọkụ, ngwa ngwa jụrụ oyi, na akwa na-eguzogide ọgwụ. isi ike, na-esochi aja seramiiki agwakọtara agwakọta, aja silica, na ájá seramiiki siri ike. , ike na-eguzogide iyi nke nkedo ga-adị ala site na 2-4 isi.
3.2 atụnyere ndakọrịta
Dị ka foto dị n'elu, ụdị ájá atọ na-edebe awa 4 na 1590 ℃ n'ime ọkụ.
Ihe ndakpọ ájá ceramic nke sintered bụ nke kacha mma. Ngwongwo a etinyewokwa nke ọma na ihe nkedo Aluminom.
3.3 Ike tụnyere nke aja ebu maka ebe a na-emepụta ihe
ATỌ paramita nke resin ntekwasa ájá ebu maka ebe nchoputa
| Aja | HTS(MPa) | RTS(MPa) | AP (PA) | Ọnụego LE (%) |
| 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 |
Mara:
1. Ụdị resin na ego bụ otu, ájá mbụ bụ nha AFS65, na otu ọnọdụ mkpuchi.
2. CS: Ceramic ájá
RSS: ájá silica a ṅara n'ọkụ
HTS: Ike tensile na-ekpo ọkụ.
RTS: Ike tensile ime ụlọ
AP: Permeability ikuku
Ọnụego LE: Ọnụego mgbasawanye Liner.
3.4 Ọnụego mweghachi nke ájá ceramiiki mara mma
Thermal na igwe reclamation usoro bụ ma mma kwesịrị ekwesị seramiiki ájá, n'ihi na ya' urughuru si elu ike, elu ike isi ike, akwa eyi iguzogide, seramiiki ájá fọrọ nke nta bụ kasị elu regeneration ugboro raw ájá na ájá foundry azụmahịa. Dabere na data mweghachi nke ndị ahịa ụlọ anyị, ájá seramiiki nwere ike ị nwetaghachi opekata mpe 50. Nke a bụ ụfọdụ ikpe kekọrịta:
N'ime afọ iri na-adịbeghị anya, n'ihi ceramic ájá dị elu refractoriness, udi bọọlụ nke nwere ike inye aka belata mgbakwunye resin gburugburu 30-50%, ihe mejupụtara ihe mejupụtara ya na nkesa nha ọka kwụsiri ike, ikuku ikuku dị mma, obere mgbasawanye ọkụ na njirimara nrụpụtagharị dị elu, wdg. dị ka ihe a na-anọpụ iche, ọ na-emetụta ọtụtụ ihe nkedo gụnyere ígwè nkedo, ihe nkedo, aluminum, ọla kọpa, na igwe anaghị agba nchara. Ngwa foundry Filiks nwere resin ntekwasa ájá, oyi igbe ájá, 3D obibi akwụkwọ ájá usoro, Ọ dịghị-eme achịcha resin ájá, itinye ego usoro, Echefuola ụfụfụ usoro, Water iko usoro wdg.
Oge nzipu: Jun-15-2023
