1. Noiʻi ʻepekema Material a me ka Pono Kūleʻa
1.1 Ka Hoʻokumu a me ka Hoʻolālā Crystalline
(Paʻa Baking Alumina)
Hana ʻia nā meaʻai kuke ceramic alumina mai ka alumini oxide (Al ₂ O ₃), ʻO kahi mea ʻeleʻele polycrystalline ma ke ʻano he 90– 99.5% alumina maemae, me nā mea hoʻohui liʻiliʻi o ka silica, magnesia, a i ʻole nā minelala pālolo e kōkua i ka sintering a me ka mālama ʻana i ka microstructure.
ʻO ka māhele crystalline kī he alpha-alumina (α-Al elua O EHA), e lawe ana i ka hana latticework hexagonal i ʻike ʻia no kona kūpaʻa ʻokoʻa, paʻa, a me ke kū'ē i ka luku kemika.
I ka hana ʻana a pau, Hoʻokumu ʻia ka pauka alumina maka a hoʻopau ʻia i ka wela (1300– 1600 ° C), hoʻolaha hoʻolaha ma o ka paʻa-mokuʻāina a i ʻole ka wai-phase sintering, ka hopena i kahi huaʻai maikaʻi, microstructure pili.
Hāʻawi kēia microstructure i ka ikaika mechanical a me ka rigidity, me nā ikaika flexural ʻokoʻa mai 250 i 400 MPa, ʻoi loa aku ma mua o nā mea o ka porcelain kahiko a i ʻole nā mea pōhaku.
ʻO ka nele o ka porosity i loko o nā porcelains alumina mānoanoa loa e pale aku i ka lawe ʻana i ka wai a keʻakeʻa i ka ulu ʻana o ka microbial., e hoʻomaʻemaʻe maoli iā lākou a maʻalahi loa e hoʻomaʻemaʻe.
ʻAʻole like me nā aniani a i ʻole nā porcelains haʻahaʻa i loaʻa nā ʻāpana amorphous i hiki ke hoʻopuʻi wela, hōʻike nā porcelains alumina kiʻekiʻe i ka hoʻohālikelike ʻana o ka hoʻolālā ʻana ma lalo o ka hoʻomehana ʻana a me nā pōʻai hoʻomaha..
1.2 ʻO ke kūpaʻa wela a me ke kaʻa ʻana o ka wela
Ma waena o kekahi o nā pono koʻikoʻi o ka alumina ceramic i nā noi baking ʻo ia kona palekana thermal.
Mālama ʻo alumina i ka paʻa o ke kūkulu hale 1700 ° C, ma mua o ke ʻano hana o nā kapuahi ʻohana (maʻa mau 200– 260 ° C), e hōʻoia i ka paʻakikī mau a me ka palekana a me ka palekana.
Kona mea hoonui wela (~ 8 × 10 ⁻⁶/ K) he haahaa, e ʻae ana i ka huahana e kū i ka hoʻololi wikiwiki ʻana o ka pae wela me ka haki ʻole, ʻAʻole ʻoi loa nā ʻoluʻolu wela i hāʻawi ʻia.
Ke hoʻomoʻa lohi, ʻO nā mea hoʻomaʻamaʻa alumina e kū pono i ka haʻalulu wela, he koi koʻikoʻi no ka hoʻololi ʻana mai ka pahu hau i ka umu a i ʻole ke ala ʻē aʻe.
Kahi mea hou aʻe, Loaʻa i ka alumina ka conductivity wela kiʻekiʻe no kahi keramika– ma kahi o 20– 30 W/(m · K)– e 'ae ai i ka ho'okahe 'ana mehana ma'ō o ka 'ai i ho'ohālikelike 'ia me nā porcelains ma'amau (5– 10 W/(m · K) )a aniani paha (~ 1 W/(m · K)).
Hoʻemi kēia conductivity i hoʻomaikaʻi ʻia i nā wahi wela a hoʻoikaika i ka browning a me ka kuke ʻana, hoʻonui i ka maikaʻi o ka meaʻai a me ka paʻa.
Hōʻike ka mea i ka emissivity kūikawā, e hoʻolele maikaʻi ana i ka wela i ka ʻili o ka meaʻai, ʻo ia ka mea e hoʻohui ai i nā hopena Maillard maikaʻi loa a me ka hoʻokumu ʻana i ka ʻōpala i nā meaʻai i kālua ʻia.
2. Hoʻomaʻamaʻa hana a me ka mana maikaʻi
2.1 Nā Hana Hana Hana a Sintering
( Paʻa Baking Alumina)
Hoʻomaka ka hana ʻana o ka alumina ceramic meaʻai kuke me ka hoʻomākaukau ʻana i kahi slurry homogeneous a i ʻole hui pauka., hana mau ʻia me ka alumina calcined, mea paa, a me nā plasticizers e hōʻoia i ka hana.
ʻO nā ala hana maʻamau, ʻo ia ka laha paheʻe, kahi i ninini ʻia ai ka slurry i loko o ka porous plaster mold a me ka mildews, a me ka uniaxial a i ʻole isostatic hoʻokuke, ka mea e hoʻopili pono i ka pauda i loko o nā kino aloha kaiaola me nā ʻano i wehewehe ʻia.
Hoʻomaloʻo ʻia kēia mau ʻano ʻoluʻolu e hoʻopau i ka pulu a me ka debound meticulously e wehe i nā mea hoʻohui organik ma mua o ka hele ʻana i ka mea hoʻomehana sintering..
ʻO ka Sintering kekahi o nā pae koʻikoʻi, i loko o kahi e hoʻopaʻa ʻia ai nā ʻāpana ma o nā mīkini diffusion, lawe mai i ka emi nui (15– 25%) a me ka hoopau pore.
Ka hoomalu pono o ka wela, manawa, a ʻo ka lewa e hoʻopaʻa pono i ka densification piha a pale i ka warping a i ʻole ka haki ʻana.
Hoʻohana kekahi mau mea hoʻolako i nā ʻano sintering i kōkua ʻia e ke kaomi e like me ke kaomi mahana e hoʻokō i ka nui kokoke-theoretical a me ka hoʻonui ʻana i nā waiwai noho mechanical., ʻoiai ke hoʻonui nei kēia i ke kumukūʻai hana.
2.2 ʻO ka hoʻopau ʻana i ka ʻili a me ka hōʻoia palekana a palekana
Ma hope o ka sintering, Hiki i nā mea alumina ke hele i ka wili a i ʻole ka hoʻomālamalama ʻana e loaʻa i nā ʻaoʻao maʻemaʻe a me nā ana kūlike, no nā poʻi kūpono kūpono a i ʻole nā mea kuke modular.
ʻAʻole pono ka glazing ma muli o ka mānoanoa kumu a me ka inertness kemika o ka mea, Eia naʻe, loaʻa i kekahi mau mea nā mea hoʻonani a maikaʻi paha e hoʻonui ai i nā hiʻohiʻona a i ʻole ka hana lāʻau ʻole.
Pono kēia mau uhi e hana me ka hoʻohana ʻana i ka wela kiʻekiʻe a ʻaʻohe kepau, cadmium, a i ʻole nā mea ʻino ʻē aʻe i mālama ʻia e nā koi palekana meaʻai e like me FDA 21 CFR, Kulekele EU (EC) ʻAʻole 1935/2004, a me LFGB.
ʻO ka hōʻoia koʻikoʻi koʻikoʻi e pili ana i ka nānā ʻana no ke kūpaʻa haʻalulu wela (e.g., hoomaha ana mai 250 ° C i 20 ° C wai), ʻoʻoleʻa mechanical, leachability, a me ke kūlana paʻa.
ʻO ka loiloi microstructural me ka hoʻohana ʻana i ka microscopy electron scanning (KA MEA) hōʻoia i ka like ʻana o ka nui o ka palaoa a me ka nele o nā hemahema koʻikoʻi, ʻoiai ka ʻokoʻa X-ray (XRD) hōʻoia i ka maʻemaʻe o ka pae a me ka nele o nā ʻāpana crystalline makemake ʻole.
ʻO nā palapala ʻae a me nā palapala conformity e hana i ka palekana o ka mea kūʻai aku a me ka hoʻoponopono ʻana i nā mākeke honua.
3. Nā Pōmaikaʻi Hana i nā noi ʻai
3.1 ʻO ka hoʻomaʻemaʻe kino a me ka palekana o ka meaʻai
ʻAʻohe kemika alumina ma lalo o nā pilikia hoʻomākaukau meaʻai maʻamau, e hōʻike ana ʻaʻole ia e pane me ka ʻakika (e.g., ʻōmato, huaʻala), alkaline, aiʻole nā meaʻai paʻakai, ka mālama ʻana i ka ʻono a me ka hoʻopaʻa ʻana i ka ʻiona metala.
ʻOi aku kēia inertness ma mua o ko nā mea kuke metala, hiki ke hoʻopau a hoʻouka kaua i nā pane makemake ʻole, a me kekahi mau porcelains aniani, kahi e hiki ai i nā meaʻai ʻawaʻawa ke hoʻokuʻu i nā kila nui mai ka glaze.
ʻAʻole ka ʻili o ka porous i ka absorption o nā aila, nā mea ʻala, a i ʻole nā puaʻa, ka hoʻopau ʻana i ka hoʻololi ʻono ma waena o nā meaʻai a me ka hoʻemi ʻana i ka paʻa microbial.
No laila, He kūpono nā kīʻaha alumina no ka hoʻomākaukau ʻana i nā ʻano ʻono e like me ka custard, meaʻai kai, a me nā ʻuala maʻemaʻe kahi e hoʻokaʻawale ʻia ai ka haumia.
ʻO kā lākou biocompatibility a me ke kūpaʻa ʻana i ka microbial bond e hoʻolilo iā lākou i mea kūpono no nā noi noiʻi olakino a me ka noiʻi, e hōʻike ana i kā lākou moʻokāki palekana a palekana.
3.2 Ka Hana Mana a me ka Hoʻomākaukau Meaʻai
Ma muli o kona kiʻekiʻe thermal conductivity a me ka mahana wela, ʻOi aku ka maikaʻi o ka alumina ceramic a mālama i ka wela ma mua o ka bakeware maʻamau.
Hāʻawi kēia inertia thermal i ka hoʻomākaukau ʻana i ka meaʻai maʻamau ma hope o ka wehe ʻana o ka puka kapuahi a hiki i ke koena o ka hoʻomākaukau ʻana i ka meaʻai ma hope o ka wehe ʻana mai ka wela., ka emi ana o ka ikehu.
ʻO nā meaʻai e like me nā kīʻaha i uhi ʻia, gratins, a me nā mea kanu i kālua ʻia e hoʻohana pono i ka hoʻonohonoho wela, ka loaʻa ʻana o ka ʻili o waho a me ka pulu o loko.
Kahi mea hou aʻe, hiki i ka huahana ke holo palekana i ka microwave, umu kahiko, pāpalapala, a me nā lewa hau hau hāʻawi i ka versatility like ʻole i nā wahi kuke o kēia wā.
ʻAʻole like me nā pā palai kila, ʻAʻole hoʻohālikelike ka alumina i nā microwaves a i ʻole ka hoʻoulu ʻana i ka arcing, hana ia i ka microwave-palekana me ka palena ole.
ʻO ka hui o ka lōʻihi, ka launa pū ʻana o ka lehulehu, a me ka kuke ʻana i nā hoʻonohonoho kūpono alumina ceramic ma ke ʻano he koho koʻikoʻi no nā mea kuke ʻoihana a me ka home.
4. Hoʻomau a me ka holomua o ka wā e hiki mai ana
4.1 ʻO ka hopena o ke kaiaola a me ka loiloi ola
Hāʻawi nā kīʻaha alumina ceramic i nā mea maikaʻi o ka kaiapuni ma mua o nā koho hoʻopau a i ʻole ka manawa pōkole.
Me ka lōʻihi o ke ola ma mua o nā makahiki ma lalo o ka mālama kūpono, hoemi lakou i ka pono no ka hoololi pinepine a hoemi i ka hoouluulu ana.
ʻO ka mea maka– alumina– mai ka bauxite mai, he minerala nui, a me ke kaʻina hana, ʻoiai ʻoi aku ka ikaika, loaʻa mai ka hana hou ʻana o nā ʻāpana ʻōpala a me nā mea ʻē aʻe i nā pūʻulu hope.
ʻAʻole paʻa a palekana nā huahana hope o ke ola, ʻaʻole e hoʻonoho i ka ʻōpala i nā ʻōpala, ʻoiai ke hoʻohana hou ʻia nei ka hoʻohana ʻana i nā huahana refractory a i ʻole nā hui kūkulu hale.
Mālama ko lākou paʻa i nā hoʻolālā hoʻokele waiwai, kahi lōʻihi o ke ola o ka huahana a me ka hoʻohana hou ʻia e kau ʻia ma luna o nā mea hoʻohana hoʻokahi.
4.2 ʻenehana i ka Hoʻolālā a me ka Assimilation akamai
ʻO ka ulu ʻana o ka wā e hiki mai ana ka hoʻohui ʻana o nā hoʻopau hana e like me ka hoʻomaʻemaʻe ponoʻī photocatalytic TiO ₂ papa a i ʻole nā ʻaoʻao SiC-doped non-stick e hoʻoikaika i ka hoʻohana..
Ke nānā ʻia nei nā pūhui ceramic-metal crossbreed e hoʻohui i ka pane wela o ke kila me ka inertness o ka alumina..
Hiki i nā hoʻolālā hana hoʻohui ke hiki ke hana pilikino, ʻO ka mea bakeware i hoʻopaʻa ʻia topology me nā ʻōnaehana hoʻoheheʻe wela i loko no ka hoʻokele wela kiʻekiʻe.
ʻO nā porcelains akamai me nā ʻāpana ʻike wela i hoʻopaʻa ʻia a i ʻole nā tag RFID no ka hoʻohana ʻana a me ka mālama ʻana aia ma ka lewa., ka hoʻohui ʻana i ka ʻepekema huahana me nā kaiāulu kaiaola kīhini kīhini.
I ka recap, ʻO nā kīʻaha alumina ceramic e hōʻike ana i ka hui ʻana o ka ʻenekinia huahana kiʻekiʻe a me ka noiʻi ʻepekema culinary.
ʻO kā lākou wela kupaianaha, mechanical, a me nā waiwai kemika, ʻaʻole ia wale nō nā mea hana kīhini paʻa akā paʻa nō hoʻi, paʻa, a me nā lawelawe hana kiʻekiʻe no ka hoʻomākaukau ʻana i nā meaʻai o kēia wā.
5. Mea hoolako
Alumina Technology Co., Ltd e nānā i ka noiʻi a me ka hoʻomohala ʻana, ka hana ʻana a me ke kūʻai ʻana i ka pauka alumini oxide, nā huahana alumini oxide, alumini oxide crucible, etc., lawelawe i ka uila, seramika, kemika a me nā ʻoihana ʻē aʻe. Mai kona hoʻokumu ʻia ʻana ma 2005, ua kūpaʻa ka hui i ka hāʻawi ʻana i nā mea kūʻai aku i nā huahana a me nā lawelawe maikaʻi loa. Inā ʻoe e ʻimi nei i ke ʻano kiʻekiʻe alumina oxide, e ʻoluʻolu e hoʻokaʻaʻike mai iā mākou.
Nā huaʻōlelo: Paʻa Baking Alumina, ʻAlumina Keramika, alumina
ʻO nā ʻatikala a me nā kiʻi a pau mai ka Pūnaewele. Inā loaʻa kekahi pilikia kope, e ʻoluʻolu e kelepona mai iā mākou i ka manawa e holoi ai.
E nīnau iā mākou