Para Uku Arumina
Ngā Mōhiohio Hua
Para uku aluminaHe ipu taiwhanga ātete-pāmahana, ātete-waikura hoki tēnei, he mea hanga ki te alumina parakore-teitei (Al₂O₃) hei rauemi mata matua mā roto i tētahi tukanga motuhake. He whānuitia te whakamahinga i roto i ngā taiao whakamātautau pāmahana-teitei i roto i ngā mara o te matū, te whakarewa, me te pūtaiao rauemi.
Ngā Āhuatanga:?
Teitei o te parakore:Ko te parakore o te alumina i roto i ngā ipu uku alumina he teitei ake i te 99%, e whakarite ana i te pumau me te koretake o te matū i ngā pāmahana teitei.
Ātete pāmahana teitei:Ko tōna ira rewa he teitei ki te 2050℃, ka taea e te pāmahana whakamahinga roa te eke ki te 1650℃, ā, ka taea e ia te tu atu i ngā pāmahana teitei tae atu ki te 1800℃ mō te whakamahinga poto.
Ātete ki te waikura:He kaha tōna ātete ki ngā matū waikura pērā i ngā waikawa me ngāngā kawakore, ā, ka taea te pupuri i te mahi pumau i roto i ngā taiao matū kino.
Te kawe wera teitei:Ka taea e ia te kawe me te hora tere i te wera, te whakahaere pai i te pāmahana whakamātautau, me te whakapai ake i te whai huatanga o te whakamātautau.
Te kaha ā-mīhini teitei:He kaha miihini teitei tōna, ā, ka taea e ia te tu atu i te pēhanga nui o waho, me te kore e pakaru wawe.
Te iti o te tauwehenga whānui wera:Ka whakaiti i te mōrearea o te pakaru me te kino i puta mai i te whakawhānui me te whakahekenga wera.
Ngāwari ki te horoi:He maeneene te mata, he ngāwari hoki te horoi me te kore e poke te tauira, kia tika ai ngā hua o te whakamātautau.
Ngā Whakaahua Taipitopito
| Te parakore | 95%/99%/99.7%/99.9% |
| Tae | Mā, kōwhai rei |
| Āhua | Āwhata/Tapawhā/Tapawhā hāngai/Pūrakau/Poti |
Rārangi Hua
| Rauemi | Arumina | ||||
| Ngā Āhuatanga | Ngā Wāhanga | AL997 | AL995 | AL99 | AL95 |
| Arumina | % | 99.70% | 99.50% | 99.00% | 95% |
| Tae | -- | rīwai | rīwai | rīwai | rīwai me te mā |
| Āheitanga uruhanga | -- | Ārai hau | Ārai hau | Ārai hau | Ārai hau |
| Kiato | karamu/cm³ | 3.94 | 3.9 | 3.8 | 3.75 |
| Te tika | -- | 1‰ | 1‰ | 1‰ | 1‰ |
| Te pakeketanga | Tauine Mohs | 9 | 9 | 9 | 8.8 |
| Te mimiti wai | -- | ≤0.2 | ≤0.2 | ≤0.2 | ≤0.2 |
| Kaha Whakapiko (20ºC noa) | Mpa | 375 | 370 | 340 | 304 |
| WhakakōpekeKaha (20ºC noa) | Mpa | 2300 | 2300 | 2210 | 1910 |
| Tauwehenga oWera Whanuitanga (25ºC ki te 800ºC) | 10-6/ºC | 7.6 | 7.6 | 7.6 | 7.6 |
| Hikohiko-ā-iraKaha (Matotoru 5mm) | AC-kv/mm | 10 | 10 | 10 | 10 |
| Ngaronga Hiko-ā-Taiao 25ºC@1MHz | -- | <0.0001 | <0.0001 | 0.0006 | 0.0004 |
| Hikohiko-ā-iraPūmau | 25ºC@1MHz | 9.8 | 9.7 | 9.5 | 9.2 |
| Ātete Rōrahi (20ºC) (300ºC) | Ω·cm³ | >1014 2*1012 | >1014 2*1012 | >1014 4*1011 | >1014 2*1011 |
| Te mahi mō te wā roa pāmahana | ºC | 1700 | 1650 | 1600 | 1400 |
| WeraTe kawe i te hiko (25ºC) | W/m·K | 35 | 35 | 34 | 20 |
Whakatakotoranga
| Rahi Taketake o te Para Porotaka | |||
| Diameter (mm) | Teitei (mm) | Matotoru o te Pakitara | Ihirangi (ml) |
| 15 | 50 | 1.5 | 5 |
| 17 | 21 | 1.75 | 3.4 |
| 17 | 37 | 1 | 5.4 |
| 20 | 30 | 2 | 6 |
| 22 | 36 | 1.5 | 10.2 |
| 26 | 82 | 3 | 34 |
| 30 | 30 | 2 | 15 |
| 35 | 35 | 2 | 25 |
| 40 | 40 | 2.5 | 35 |
| 50 | 50 | 2.5 | 75 |
| 60 | 60 | 3 | 130 |
| 65 | 65 | 3 | 170 |
| 70 | 70 | 3 | 215 |
| 80 | 80 | 3 | 330 |
| 85 | 85 | 3 | 400 |
| 90 | 90 | 3 | 480 |
| 100 | 100 | 3.5 | 650 |
| 110 | 110 | 3.5 | 880 |
| 120 | 120 | 4 | 1140 |
| 130 | 130 | 4 | 1450 |
| 140 | 140 | 4 | 1850 |
| 150 | 150 | 4.5 | 2250 |
| 160 | 160 | 4.5 | 2250 |
| 170 | 170 | 4.5 | 3350 |
| 180 | 180 | 4.5 | 4000 |
| 200 | 200 | 5 | 5500 |
| 220 | 220 | 5 | 7400 |
| 240 | 240 | 5 | 9700 |
| Rahi Taketake o te Para Tapawhā | |||||
| Roa (mm) | Whānui (mm) | Teitei (mm) | Roa (mm) | Whānui (mm) | Teitei (mm) |
| 30 | 20 | 16 | 100 | 60 | 30 |
| 50 | 20 | 20 | 100 | 100 | 30 |
| 50 | 40 | 20 | 100 | 100 | 50 |
| 60 | 30 | 15 | 110 | 80 | 40 |
| 75 | 52 | 50 | 110 | 110 | 35 |
| 75 | 75 | 15 | 110 | 80 | 40 |
| 75 | 75 | 30 | 120 | 75 | 40 |
| 75 | 75 | 45 | 120 | 120 | 30 |
| 80 | 80 | 40 | 120 | 120 | 50 |
| 85 | 65 | 30 | 140 | 140 | 40 |
| 90 | 60 | 35 | 150 | 150 | 50 |
| 100 | 20 | 15 | 200 | 100 | 25 |
| 100 | 20 | 20 | 200 | 100 | 50 |
| 100 | 30 | 25 | 200 | 150 | 5 |
| 100 | 40 | 20 | |||
| Rahi Taketake o te Para Āwhata | ||||
| Diamita o Runga (mm) | Diameter Turanga (mm) | Teitei (mm) | Matotoru o te Pakitara (mm) | Ihirangi (ml) |
| 25 | 18 | 22 | 1.3 | 5 |
| 28 | 20 | 27 | 1.5 | 10 |
| 32 | 21 | 35 | 1.5 | 15 |
| 35 | 18 | 35 | 1.7 | 20 |
| 36 | 22 | 42 | 2 | 25 |
| 39 | 24 | 49 | 2 | 30 |
| 52 | 32 | 50 | 2.5 | 50 |
| 61 | 36 | 54 | 2.5 | 100 |
| 68 | 42 | 80 | 2.5 | 150 |
| 83 | 48 | 86 | 2.5 | 200 |
| 83 | 52 | 106 | 2.5 | 300 |
| 86 | 49 | 135 | 2.5 | 400 |
| 100 | 60 | 118 | 3 | 500 |
| 88 | 54 | 145 | 3 | 600 |
| 112 | 70 | 132 | 3 | 750 |
| 120 | 75 | 143 | 3.5 | 1000 |
| 140 | 90 | 170 | 4 | 1500 |
| 150 | 93 | 200 | 4 | 2000 |
Ngā tono
1. Te maimoatanga wera-teitei:Ka taea e ngā oko uku konumohe te tu atu ki te whakamahinga roa i roto i ngā taiao pāmahana teitei, ā, he pai hoki te ātete ki te wera. Nō reira, he whānuitia te whakamahinga i roto i ngā mara maimoatanga wera pāmahana teitei, pērā i te sintering, te maimoatanga wera, te rewa, te whakamahana me ētahi atu tukanga.
2. Tātaritanga matū:He pai te ātete o ngā oko uku alumina ki te waikura, ā, ka taea te whakamahi mō te tātari me te tauhohenga o ngā momo matū tauhohenga, pērā i ngā otinga waikawa me te kawakore, ngā tauhohenga redox, ngā tauhohenga waro, me ētahi atu.
3. Te whakarewa whakarewa:Nā te ātete wera nui me te pumau matū pai o ngā oko uku alumina, he mea whai hua ēnei mō ngā tukanga whakarewa me te whakarewanga whakarewa, pērā i te whakarewa me te whakarewanga o te konumohe, te maitai, te parahi me ētahi atu konganuku.
4. Te whakarewa paura:Ka taea te whakamahi i ngā oko uku alumina hei hanga i ngā rauemi whakarewa paura whakarewa me te kore-whakarewa, pērā i te tungsten, te molybdenum, te rino, te parahi, te konumohe, me ētahi atu.
5. Te hanga i te thermocouple:Ka taea te whakamahi i ngā oko whakarewa uku alumina hei hanga ngongo tiaki uku mō ngā takirua wera me ngā matua whakamahana me ētahi atu wāhanga hei whakarite i te pumau me te tika o ngā takirua wera.
Tātari taiwhanga me te tātari ahumahi
Te whakarewa whakarewa
Te whakarewa paura
Te hanga i ngā hononga wera
Mōkihi me te Whare Putunga
Ngā Pātai Auau
Me āwhina koe? Tirohia ā mātou wānanga tautoko mō ngā whakautu ki ō pātai!
He kaihanga tūturu mātou, he tohunga tā mātou wheketere ki te whakaputa rauemi ātete ahi mō ngā tau neke atu i te 30. Ka oati mātou ki te whakarato i te utu pai rawa atu, te ratonga pai rawa atu i mua i te hoko me muri i te hoko.
Mō ia tukanga whakaputa, he pūnaha QC katoa tā te RBT mō te hanganga matū me ngā āhuatanga ā-tinana. Ā, ka whakamatautauria e mātou ngā taonga, ā, ka tukuna atu te tiwhikete kounga me ngā taonga. Mena he whakaritenga motuhake āu, ka whakapau kaha mātou ki te whakatutuki i aua whakaritenga.
He rerekē te wā tuku i runga i te rahinga. Engari ka oati mātou ki te tuku wawe tonu me te kounga kua oti te whakapūmau.
Ko te tikanga, ka tukuna e mātou he tauira kore utu.
Āe, he pono, nau mai haere mai ki te toro mai ki te kamupene RBT me ā mātou hua.
Kāore he rohe, ka taea e mātou te whakarato i te whakaaro me te otinga pai rawa atu e ai ki tō āhuatanga.
Neke atu i te 30 tau mātou e hanga ana i ngā rauemi ātete ahi, he kaha te tautoko hangarau me te nui o ngā wheako, ka taea e mātou te āwhina i ngā kiritaki ki te hoahoa i ngā oumu rerekē me te whakarato ratonga kotahi-mutu.
