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 Forming and Sintering Techniques
( Paʻa Baking Alumina)
The production of alumina ceramic cooking meals starts with the preparation of a homogeneous slurry or powder mix, commonly made up of calcined alumina, binders, and plasticizers to ensure workability.
Usual forming approaches consist of slip spreading, where the slurry is poured right into porous plaster mold and mildews, and uniaxial or isostatic pushing, which compact the powder right into eco-friendly bodies with defined forms.
These environment-friendly types are then dried out to get rid of wetness and meticulously debound to remove organic additives prior to going into the sintering heater.
Sintering is one of the most critical stage, throughout which particles bond via diffusion mechanisms, bring about substantial shrinkage (15– 25%) and pore elimination.
Precise control of temperature, time, 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