Ngongo Parenga Thermocouple Silicon Carbide Herea Silicon Nitride: Te Parenga Tino Pai mō te Ine i te Pāmahana Ahumahi

Ko ngā thermocouples te poutokomanawa o te aroturukitanga pāmahana i roto i ngā tukanga ahumahi maha—mai i te whakarewa whakarewa ki te hanga matū. Heoi, ko tā rātou mahi me te roa o te ora e whakawhirinaki katoa ana ki tētahi wāhanga nui: te ngongo tiaki. I roto i ngā taiao ahumahi uaua, ko ngā ngongo tiaki thermocouple tuku iho (he mea hanga ki te whakarewa, te alumina, te silicon carbide parakore rānei) he maha ngā wā ka kore e tu atu i te wera nui, i te waikura, i ngā matūriki whakakoi rānei. Ka hua ake tēnei i ngā whakakapinga thermocouple maha, i ngā raraunga pāmahana hē, me te wā whakatārewatanga utu nui.

Mena kua hoha koe ki te whakararuraru i te pono o te thermocouple,Ngā Ngongo Parenga Thermocouple Hononga Silicon Nitride (NSiC)koinei te otinga whakarerekētanga e hiahiatia ana e koe. I hangaia hei tiaki i ngā thermocouples i roto i ngā āhuatanga tino uaua, ka whakarite ngā ngongo NSiC i te pūmau me te tika o te ine pāmahana me te whakanui ake i te roa o te mahi a ō taputapu ine nui.

He aha te take e tu motuhake ai te Silicon Nitride Bonded Silicon Carbide mō te tiaki i te thermocouple?

Me whai taurite ahurei ngā āhuatanga o ngā ngongo tiaki thermocouple: te ātete wera, te ātete waikura, te kaha miihini, me te kawe wera. He tino pai te NSiC i ēnei wāhanga katoa, he pai ake i ngā rauemi tuku iho i ngā inenga matua katoa:

1. Ātete Pāmahana Tino Nui mō te Pūrongo Kore-Mutu​

I roto i ngā ahumahi pēnei i te hanga karāhe, i te whakarewa whakarewa rānei, ka mahi ngā thermocouples i ngā pāmahana neke atu i te 1,500°C. Māmā noa te whakahaere a ngā ngongo tiaki thermocouple NSiC i tēnei āhuatanga—e whakamanamana ana ki te pāmahana mahi tonu tae atu ki te 1,600°C (2,912°F) me te ātete poto ki te 1,700°C (3,092°F). Kāore i rite ki ngā ngongo whakarewa e waikura ana, e rewa ana rānei, ki ngā ngongo alumina rānei e pakaru ana i raro i te ru wera, ka mau tonu te hanganga o te NSiC ahakoa ngā piki me ngā heke tere o te pāmahana. Ko te tikanga ka noho haumaru tonu tō thermocouple, ā, ka noho tika tonu ō raraunga pāmahana—ahakoa te kaha o te wera.​

2. Ātete Pai ki te Waikura hei Parepare i ngā Pāpāho Whakakeke​

He maha ngā tukanga ahumahi e whakaatu ana i ngā thermocouples ki ngā konganuku rewa (konumohe, konutea, parahi), ki ngā otinga waikawa/kawakore, ki ngā hau waikura rānei (hauora whanariki, māota). Ko te hanganga piri-nitride o te NSiC ka hanga he ārai kore e taea te uru ki ēnei matū. He rerekē ki ngā ngongo silicon carbide parakore, e ngāwari ana ki te waikura i roto i ngā taiao pāmahana teitei makuku, ka whakarei ake te hanganga ahurei o te NSiC i te ātete waikura—e whakarite ana kia noho haumaru tō thermocouple mai i te waikura mō ngā tau. He mea nui tēnei mō ngā tono pēnei i te tukatuka matū, te tahunga para, me te hanga rauemi pākahiko.

3. Kaha Mīhini Tino Pai hei Ārai i te Pakahu me te Pānga​

Kei te tūpono tonu ngā tūhonohono wera i roto i ngā tipu sima, ngā teihana hiko, ngā whare tukatuka kohuke rānei ki ngā tūmomo mōrearea: te puehu whakakoi, ngā matūriki rere, me te pānga ā-mīhini. Kua hangaia ngā ngongo tiaki tūhonohono wera NSiC hei ātete i ēnei wero, me te kaha piko neke atu i te 300 MPa me te pakeke Vickers (HV10) ≥ 1,800. Nā tēnei ka 3–5 ngā wā ka roa ake te mau i ngā ngongo tuku iho, ka whakaiti i te hiahia mō ngā whakakapinga auau. Mō āu mahi, ka iti ake te wā whakatā, ka iti ake ngā utu tiaki, ka pono ake te mahi tūhonohono wera.​

4. Te Arahi Wera Tino Pai mō ngā Pānui Tere, Tika hoki​

Ko te uara o te thermocouple kei roto i tōna kaha ki te urupare tere ki ngā huringa pāmahana. He nui ake te kawe wera o te NSiC (60–80 W/(m·K)) i tērā o te alumina, o ngā ngongo whakarewa rānei, e āhei ai te whakawhiti wera tere mai i te tukanga ki te hononga thermocouple. Mā tēnei ka whakarite kia tukuna e tō thermocouple ngā raraunga tika, wā-tūturu—he mea nui mō te pupuri i te mana whakahaere tukanga me te kounga hua. Hei tāpiri, ko te tauwehenga whānui wera iti o te NSiC (3.5–4.5 × 10⁻⁶/°C) ka whakaiti i te ahotea wera, ka ārai i ngā pakaru ka taea te whakararu i te tika o te ine.

5. Te Roa o te Utu Whai Hua mō te Whakaiti i ngā Utu Katoa o te Mana Whakahaere​

Ahakoa he nui ake te haumitanga tuatahi o ngā ngongo tiaki thermocouple NSiC i ngā kōwhiringa tuku iho, he roa te ora ratonga (2–5 tau i roto i ngā āhuatanga uaua) me te iti o ngā hiahia tiaki ka puta he penapena nui mō te wā roa. Mā te whakaiti i te auau whakakapinga thermocouple me te wā kore mahi whakaputa, ka whakaitihia e te NSiC tō utu katoa o te mana (TCO) me te whakanui ake i tō hokinga mai o te haumitanga (ROI). Mō ngā tipu ahumahi e hiahia ana ki te whakapai ake i te whai huatanga, he kōwhiringa mohio tēnei, he mea whakarite mō te heke mai.