Waea 4J29 Kover Whānuitanga 0.008mm mō te Ahumahi Korehau Hiko
Waea Kovar Alloy-4J29 Whakawhanui
(Ingoa noa: Kovar, Nilo K, KV-1, Dilver Po, Vacon 12)
Ko te Alloy-4J29, e mōhiotia ana ko te Kovar alloy. I hangaia hei whakatutuki i te hiahia mō tētahi hiri karāhe-ki-te-konganuku pono, e hiahiatia ana i roto i ngā taputapu hiko pēnei i ngā pūangi rama, ngā ngongo korehau, ngā ngongo hihi katote, me ngā pūnaha korehau i roto i te matū me ētahi atu rangahau pūtaiao. Kāore e taea e te nuinga o ngā konganuku te hiri ki te karāhe nā te mea kāore tō rātou tauwehenga o te horapa wera o te SIon i rite ki te karāhe, nō reira i te mea ka mātao te hononga i muri i te hanganga, ko ngā taumahatanga nā ngā tere horapa rerekē o te karāhe me te konganuku ka pakaru te hononga.
(-Kovar)
He koranu nikara-kopara te Kovar, he rite tonu te hanganga ki a Fernico, i hangaia kia hototahi ki ngā āhuatanga o te karāhe borosilicate (~5 × 10⁺6/K i waenga i te 30 me te 200 °C, ki te ~10 × 10⁺6/K i te 800 °C) kia taea ai te hono tika i ngā hononga ā-ringa i runga i ngā pāmahana rerekē. Ka whakamahia ki ngā ara iahiko whakakikoruatia e uru ana ki ngā takai karāhe o ngā wāhanga hiko pēnei i ngā ngongo korehau (ngā takirere), ngā ngongo hihi-X me te ngaruiti me ētahi pūrama rama.
Ko te ingoa Kovar e whakamahia whānuitia ana hei kupu whānui mō ngā koranu Fe-Ni me ēnei āhuatanga motuhake o te whakawhanuitanga wera SIon. Kia mōhio ki te koranu Fe-Ni motuhake e whakaatu ana i te iti rawa o te whakawhanuitanga wera SIon.
I hangaia te Alloy-4J29 hei whakatutuki i te hiahia mō tētahi hiri karāhe-ki-te-konganuku pono, e hiahiatia ana i roto i ngā taputapu hiko pēnei i ngā pūangi rama, ngā ngongo korehau, ngā ngongo hihi katote, me ngā pūnaha korehau i roto i te matū me ētahi atu rangahau pūtaiao. Kāore e taea e te nuinga o ngā konganuku te hiri ki te karāhe nā te mea kāore tō rātou tauwehenga o te horapa wera SIon i rite ki te karāhe, nō reira i te mea ka mātao te hononga i muri i te hanganga, ko ngā taumahatanga nā ngā tere horapa rerekē o te karāhe me te konganuku ka pakaru te hononga.
Ehara i te mea he rite noa te whānuitanga wera o te Alloy-4J29 ki te karāhe, engari he maha ngā wā ka taea te hanga i tōna pihi whānuitanga wera kore-raina kia rite ki te karāhe, kia taea ai e te hononga te aro atu ki tētahi whānuitanga pāmahana whānui. I roto i te matū, ka honoa ki te karāhe mā te paparanga waikura waenga o te waikura nikara me te waikura cobalt; he iti te ōwehenga o te waikura rino nā tōna whakahekenga me te cobalt. Ko te kaha o te hononga e tino whakawhirinaki ana ki te matotoru me te āhua o te paparanga waikura. Mā te noho mai o te cobalt ka māmā ake te rewa me te memeha o te paparanga waikura i roto i te karāhe rewa. Ko te tae hina, hina-kikorangi, hina-parauri rānei e tohu ana i te hiri pai. Ko te tae konganuku e tohu ana i te korenga o te waikura, ko te tae mangu e tohu ana i te konganuku kua tino waikurahia, i ngā āhuatanga e rua ka arahi ki te hononga ngoikore.
E whakamahia ana i roto i ngā wāhanga korehau hiko me te whakahaere tukunga, te ngongo ru, te ngongo mura, te magnetron karāhe, te tran SIstors, te mono hiri, te tānga, te ara iahiko whakauru, te anga, ngā whāiti me ētahi atu hiri whare.
Te hanganga noa%
| Ni | 28.5~29.5 | Fe | Para. | Co | 16.8~17.8 | Si | ≤0.3 |
| Mo | ≤0.2 | Cu | ≤0.2 | Cr | ≤0.2 | Mn | ≤0.5 |
| C | ≤0.03 | P | ≤0.02 | S | ≤0.02 |
Kaha Kume, MPa
| Waehere o te tikanga | Āhua | Waea | Tīpako |
| R | Ngāwari | ≤585 | ≤570 |
| 1/4I | 1/4 Mārō | 585~725 | 520~630 |
| 1/2I | 1/2 Mārō | 655~795 | 590~700 |
| 3/4I | 3/4 Mārō | 725~860 | 600~770 |
| I | Pakari | ≥850 | ≥700 |
Ngā āhuatanga ā-tinana noa
| Kiato (g/cm3) | 8.2 |
| Ātete hiko i te 20ºC (mm2/m) | 0.48 |
| Tauwehe pāmahana o te parenga(20ºC~100ºC)X10-5/ºC | 3.7~3.9 |
| Pūwāhi Curie Tc/ ºC | 430 |
| Tauwehenga Ātete, E/ Gpa | 138 |
Tauwehenga o te expAN SIon
| θ/ºC | α1/10-6ºC-1 | θ/ºC | α1/10-6ºC-1 |
| 20~60 | 7.8 | 20~500 | 6.2 |
| 20~100 | 6.4 | 20~550 | 7.1 |
| 20~200 | 5.9 | 20~600 | 7.8 |
| 20~300 | 5.3 | 20~700 | 9.2 |
| 20~400 | 5.1 | 20~800 | 10.2 |
| 20~450 | 5.3 | 20~900 | 11.4 |
Te kawe wera
| θ/ºC | 100 | 200 | 300 | 400 | 500 |
| λ/ W/(m*ºC) | 20.6 | 21.5 | 22.7 | 23.7 | 25.4 |
| Te tukanga maimoatanga wera | |
| Te whakamahana hei whakamamae i te ahotea | Whakamahanahia ki te 470~540ºC, ā, pupurihia mō te 1~2 hāora. Whakamataohia. |
| whakamahana | I roto i te korehau kua wera ki te 750 ~ 900ºC |
| Te wā pupuri | 14 meneti~1 hāora. |
| Te tere whakamatao | Kaua e neke atu i te 10 ºC/min te whakamatao ki te 200 ºC |
Te momo tuku
| Ingoa o ngā koranu | Momo | Ahu | ||
| Koranu-4J29 | Waea | D= 0.1~8mm | ||
| Koranu-4J29 | Tīpako | W= 5~250mm | T= 0.1mm | |
| Koranu-4J29 | Pepa konumohe | W= 10~100mm | T= 0.01~0.1 | |
| Koranu-4J29 | Pae | Dia = 8~100mm | R= 50~1000 | |
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