I ka hoʻolei ʻana i ke one, ʻoi aku ma mua o 95% hoʻohana i ke one silica. ʻO ka pōmaikaʻi nui o ke one silica ʻo ia ka maʻalahi a maʻalahi ke kiʻi. Eia nō naʻe, ʻike ʻia nā hemahema o ke one silica, e like me ka maikaʻi ʻole o ka wela, ʻo ka hoʻololi ʻana o ka pae mua ma kahi o 570 ° C, kiʻekiʻe ka hoʻonui ʻana o ka wela, maʻalahi ke haki, a ʻo ka lepo i hana ʻia e ka haʻihaʻi he mea pōʻino loa ia i ke olakino kanaka. . I ka manawa like, me ka ulu wikiwiki o ka hoʻokele waiwai, hoʻohana nui ʻia ke one silica i ka ʻoihana kūkulu hale, ʻoihana aniani, keramika a me nā ʻoihana ʻē aʻe. Loaʻa ka nele o ke one silica kiʻekiʻe a paʻa. He pilikia koʻikoʻi ka ʻimi ʻana i kāna mau mea pani no ka honua holoʻokoʻa.
I kēia lā e kamaʻilio e pili ana i ka ʻokoʻa o kekahi mau one maka maʻamau i ka ʻoihana foundry, e like me ka hui sndfoundry i nā makahiki he nui, e hoʻokipa pū i nā hoaaloha hou aʻe e hui pū me ke kamaʻilio.
1.Nā Sand Raw maʻamau ma Foundry
1.1 Ke one maoli
ʻO ke one kūlohelohe, mai ke ʻano, e like me ke one silica, ke one chromite, ke one zircon, ke one ʻoliva magnesium etc.
1.2 Ke one hana
E like me Artificial silica one, alumini silicate series artificial spherical sand, etc.
Ma ʻaneʻi mākou e hoʻolauna nui ai i ka alumini silicate series artificial spherical sand.
2. Aluminum silicate series artificial spherical one
Aluminum silicate series artificial spherical one, i ʻike ʻia ʻo "ceramic foundry sand", "Cerabeads", "ceramic beads", "ceramsite", "Synthetic spherical sand for casting (Moon sand)", "mullite beads", "high refractoriness spherical one", "Ceramcast", "Super sand", a me nā mea ʻē aʻe, ʻaʻohe inoa like ʻole ma ka honua a ʻokoʻa nā kūlana. (Kahea mākou i ke one ceramic ma kēia ʻatikala)
Akā ʻekolu mau wahi like e ʻike ai iā lākou penei:
A. Ke hoʻohana nei i ka alumini silicate refractory mea (bauxite, kaolin, nā pōhaku i puhi ʻia, a me nā mea ʻē aʻe) e like me nā mea maka,
B. He spherical nā ʻāpana one ma hope o ka hoʻoheheʻe ʻana a i ʻole ka sintering;
C. ʻO ka hui kemika nui me Al2O3, Si2O, Fe2O3, TiO2 a me nā mea'okikene'ē aʻe.
Ma muli o ka nui o nā mea hana ma Kina i ke one seramika, aia nā kala like ʻole a me ka ʻili mai nā kaʻina hana like ʻole a me nā wahi kumu like ʻole o ka mea maka, a me nā ʻokoʻa Al2O3 ʻokoʻa a me ka wela o ka huahana.
3. Nā palena o ke one no ka hoʻokumu ʻana
| 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 |
| Zircona | ≥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 |
'Ōlelo Aʻo: He ʻokoʻa ka hale hana a me ke one, ʻokoʻa ka ʻikepili.
Eia ka ʻikepili maʻamau.
3.1 Nā hiʻohiʻona hauʻoli
E like me ke kumu hoʻoheheʻe ʻana, pili ka nui o ke one i ʻekolu mau mea: ka hoʻoheheʻe wela, ka nui o ka wela, a me ka nui maoli. ʻO ka mea pōʻino, ʻokoʻa kēia mau mea ʻekolu no ke one mai nā mea hana like ʻole a i ʻole nā kumu kumu, no laila i ka hoʻomohala ʻana I ka wā o ke kaʻina hana o ka hoʻolei ʻana i ke kila kila, ua ʻike mākou ʻo ke one chromite ka hopena chilling maikaʻi loa, ka wikiwiki hoʻoluʻu wikiwiki, a me ka pale lole kiʻekiʻe. ʻo ka paʻakikī, a ukali ʻia e ke one ceramic fused, ke one silica, a me ke one ceramic sintered. , e emi iho ka paakiki o ka hoolei ana ma na helu 2-4.
3.2 Hoʻohālikelike like ʻole
E like me ke kiʻi ma luna, mālama ʻekolu ʻano one i 4 mau hola me 1590 ℃ i loko o ka umu.
ʻO ke one ceramic collapsibility ka mea maikaʻi loa. Ua hoʻohana maikaʻi ʻia kēia waiwai i nā huahana hoʻolei alumini.
3.3 ʻO ka hoʻohālikelike ʻana i ka ikaika o ka lepo one no ka hoʻokumu ʻana
ATʻO nā ʻāpana o ke one i uhi ʻia i ka resin no ka hana ʻana
| Sands | HTS(MPa) | RTS(MPa) | AP(Pa) | Ka helu 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 |
Nānā:
1. ʻO ke ʻano resin a me ka nui like, ʻo ke one kumu ka nui o AFS65, a me nā kūlana uhi like.
2. CS: Ke one keramika
RSS: ʻO ke one Silica i kālua ʻia
HTS: Ka ikaika tensile wela.
RTS: Ka ikaika uʻi lumi
AP: ʻAi ka ea
Laki LE: Laki hoonui laina.
3.4 ʻOi aku ka maikaʻi o ka hoʻihoʻi ʻana o ke one keramika
Thermal a me ka mīkini reclamation kaʻina mea, he maikaʻi kūpono ke one one, ma muli o kona 'partic's kiʻekiʻe ikaika, kiʻekiʻe paʻakikī, kiʻekiʻe aahu pale aku, ceramic one kokoke i ka kiʻekiʻe loa regeneration manawa maka one ma ke one foundry oihana. Wahi a kā mākou mau mea kūʻai aku i ka ʻikepili reclamation, hiki ke kiʻi hou ʻia ke one ceramic ma kahi o 50 mau manawa. Eia kekahi mau hihia kaʻana like:
I nā makahiki he ʻumi i hala iho nei, ma muli o ke one ceramic refractoriness kiʻekiʻe, ke ʻano o ka pōleʻa e hiki ke kōkua i ka hōʻemi ʻana i ka hoʻohui resin ma kahi o 30-50%, ka hoʻohui like ʻana a me ka hoʻohele ʻana i ka nui o ka palaoa, ka maikaʻi o ka ea, ka liʻiliʻi o ka wela a me nā ʻano hana hou hou aʻe. ma ke ʻano he mea kūʻokoʻa, pili nui ia i nā hoʻoheheʻe he nui e like me ka hao, ke kila kila, ke alumini hoʻolei, ke keleawe, a me ke kila kila. Loaʻa nā kaʻina hana foundry no ka Resin i uhi ʻia ke one, Cold box sand, 3D printing sand process, No-bake resin sand, Investment process, Lost foam process, Water glass process etc.
Ka manawa hoʻouna: Iune-15-2023
