He aha ngā kōpae e pai ana hei whakamātautau i ngā pūpū kōrero metāl kounga teitei?

Ko ngā paearu mahi matua mō ngā rauemi whakarewa-whakapuhi

Te Ora Ngaro-Whakawhāiti me te Whakakore-Whaka-Whaka: Te Whakawhitinga Matua i roto i te Hoahoa o nga Taonga-Taonga

Inā he mātua pūtaiao e mahi ana i ngā pāpātanga kōrero o te rīhi, he raru tēnei: ngā kōpae e taea ana te whakamātau i ngā huringa maha o te whakamātau, pērā i ngā kōpae kōrihi o te nikilē, he iti ngā whakamātau ki te whakamātau i ngā whakamātau o te whakamātau. I te wā anō, ko ngā kōpae kōrihi o te rīhi e whakamātau ana i ngā whakamātau o te whakamātau, he iti ngā whakamātau ki te whakamātau i ngā huringa pāhono e whakamātau ana i ngā whakamātau o te whakamātau. Ko tēnei he raru nui i ngā pūmātua o te whakamātau i ngā kōpae kōrihi, i reira me whakamātau ngā pāpātanga kōrero i ngā kōpae kōrihi o te whakamātau me ngā huringa pāhono e whakamātau ana i ngā whakamātau o te whakamātau. He tauira ngā kōpae kōrihi o te rīhi o te āhua austeriti, pērā i te 304L. Ko ēnei e taea ana te whakamātau i ngā whakamātau e iti ana (pērā i ngā 10,000), engari kia tūpato i ngā wā e whakamātau ana i te wai kākahi, i ngā klorīti rānei, nā te mea ka rere ngā kōpae kōrihi i ngā whakamātau o te whakamātau. Ka tāwhai anō te Inconel 625, e taea ana te whakamātau i ngā huringa i te 100,000, ahakoa te hāngā o te hāngā o te 600°C. Engari kia pono, kāore he tāngata e pai ana ki te utu i te toru wā te utu o te kōpae kōrihi tūturu kia taea ai tēnei āhua o te whakamātau. Nō reira, he aha tā mātou mahi? Ko te whakamātau i te roa o te whakamātau o te mea, i te wā anō i te whakamātau i te taupua o te wāhi e noho ai. Mēnā ko te hāngā me ngā whakamātau ngā take matua, haere mai ki tētahi mea e taea ana te whakamātau i ngā whakamātau o te whakamātau. Engari mēnā he ātārangi, he wai kākahi rānei, ka hāngā tonu te whakamātau i te whakamātau o te whakamātau, ā, he nui ake i te whakamātau o te whakamātau, ahakoa ko te whakamātau o te whakamātau he iti.

Ngā Whakaaetanga mō te Tūtahi o ngā Whakauru: He aha te āhua o te whakamārama i te tūtahi o te rōhutu (HAZ) i tāwhai ai i te whakamāmā o te kōpae

Ko te Rohe Whakaaweawe i te wera, ko te HAZ, e tohu ana ki taua rohe whakawhiti huri noa i nga solder e huri ana nga taonga whakarewa na te wera. Ko te mea e tupu ana i tēnei rohe e whakatau ana i te pono o ngā pūhau whakarewa i whakawātea i te wā. Ka pakaru te hanganga iti i roto i te HAZ, ka tīmata ngā raruraru ki te puta mai, pēnei i te hanga pakaru, te pakaru o ngā rauemi, te puta mai rānei o ngā wāhi waikura, ina koa ka puta mai he taumahatanga auau ki te wāhanga. He teitei ake te taumata waro o te 304 maitai kore e taea te whakarewa, e kaha ana ki te raruraru i te wa e whakawera ana i te wa e hanga ana i nga karekau karekau, ka waiho i muri i nga waahanga e kaha ana ki te waikura. Koinei te take i tahuri ai te nuinga o ngā kaiwhakanao ki ngā momo pūmau. Ko ngā kāwai pēnei i te 321 me ngā tāpiritanga titanium me te 347 me te niobium e hanga ana i ngā karupara pūmau ake e pupuri ana i te chromium kia tika te tohatoha puta noa i te rauemi, e pupuri ana i te tika o te HAZ. Ko ngā tikanga whakawera laser he painga anō i konei nā te mea ka taea e rātau te whakaiti i te rahi o te HAZ ki te 60% i whakaritea ki ngā tikanga tuku iho, e āwhina ana ki te whakahaere i te tipu o te witi, e whakaiti ana hoki i aua taumahatanga toenga. I roto i ngā tono tino hira pēnei i ngā pūnaha pūngao rererangi, kāore e taea e tētahi te whakaiti i te pūmautanga HAZ. Ka whakahaerehia e ngā kaipūkaha ngā whakamātautau pēnei i te tātai i te pakeke o te pūtau me ngā tirotiro i te waipiro kia tino mōhio ai ngā hononga e mahi tonu ana ahakoa ngā momo āhuatanga whakahaere katoa.

Ngā Huinga Tātai Kōpū: Ngā Huinga Tātai Mātua mō ngā Pūrere Tātai-Metara Whakamātautau i te Rārangi Tātai

304L me 316L: Te Whakarite i te Uta, te Whakamāhua, me te Whakamātata i ngā Whakamātautau Iri-Iti ki te Iri-Irite

Mō ngā pūpū kōrero o te kōhao kōwhai i whakamahinga i ngā pāhi i te iti ki te wāhi, i raro i te 500 psi, ko ngā kōhao kōwhai stainless steel austenitic 304L me ngā 316L he tātai pai i waenganui i te utu, i te māmā o te whakamāori, me te whakamāori o te whakamāori. Ko te iti o te carbon i te kōhao kōwhai 304L, ā, he 0.03%, i raro, ka whakamātua ai ngā karapīti e whakamāhinga ana i ngā rākau o ngā rākau i te whakamāori. Arā, he pai ake te tiaki i ngā pāhi me ngā whakamāori kaha, ahakoa ngā whakamāori laser, i ngā whakamāori TIG rānei. He pai hoki tēnei kōhao kōwhai mō ngā mahi whakamāori pūnaha, ā, he tātai pai hoki mō ngā āhua pūnaha e whakamāhinga ana i ngā whakamāori maha. Ina whakaurua ngā manuā 2 ki ngā 3 ōrau o te molybdenum hei hanga i te 316L, ka whakamātua ake ngā pāhi ki ngā pāhi pitting me ngā pāhi crevice. Nō reira, ko tēnei kōhao kōwhai e whakamāhinga ana i ngā wāhi pāhi, pērā i ngā whakamāhinga moana, ngā taputapu o ngā rākau, me ngā rākau whakamāhinga i waho i te whenua. Mō ngā whakamāhinga i raro i ngā wāhi kāore he pāhi nui, ko te whakamāhinga i te 304L i te wāhi o te 316L he 15 ki ngā 20 ōrau te iti ake o ngā utu, ā, he pai tonu ngā whakamāhinga kia kore he wāhi mō ngā wāhi HVAC, ngā vālve whakamāhinga, me ngā rākau whakamāhinga.

321 me 347: He momo pūmau mō ngā pūāhua whakarewa-whakatūnga, wera-nui-whakatūnga

Ko nga maitai he rite ki te titanium-whakatikaina 321 me te niobium-whakatikaina 347 te whakatau i nga raru maha e pa ana ki nga tohu austenitic paerewa ka whakamahia ana i roto i nga tono e pa ana ki nga huringa taumaha i nga paemahana tiketike, ina koa tetahi mea i runga Ko te mea e motuhake ai rātou ko te āhua o te pūmautanga o ō rātou huānga e herea ana te waro ki roto i ngā karapa pūmautanga i ngā tukanga pēnei i te taera, i te huringa wera rānei. Ka āwhina tēnei ki te ārai i ngā take e whakaiti ana i te chromium, ā, ka raru te mātau i ngā rohe o te witi. Ko nga rauemi e rua e pupuri ana i to raatau aukati i te waikura me te pupuri i te pai o te waikura ahakoa i muri i te tekau mano o nga huringa whakahiato i roto i nga waahanga penei i nga kohinga whakapau, nga hononga whakarahi turbine, me nga momo kaiwhakaari wera. Ko te tohu 321 te tikanga e mau ana ki tona kaha tae noa ki te tae atu ki te 800 ° C, i te mea ka haere te 347 ki tua atu, ka aukati i te whakakorenga o te kiri me nga whakaeke o te intergranular tae noa ki te 900 ° C. Ko nga whakamatautau i whakahaerehia i raro i nga tikanga pakeke tere Ko te tikanga ka taea e nga kaipūkaha te whakawhirinaki ki a raatau mo te mahi hiri pono i nga waahanga nui penei i nga taputapu whakatipu hiko me nga punaha whakahaere wera i roto i te umanga rererangi.

Ngā Whakamātautau Pūtake Tino Mātua mō ngā Taiao Tino Uara: Inconel, Hastelloy, me te Titanium i ngā Pūpahi Kōrero o te Kōrero Kōrero

Inconel 625 me te 718: Te Whakamānuitanga i te Kaha o te Whakamātau i runga ake i te 600°C me te whakamārama tonu o ngā huinga kōrero kōrero

Ko nga superalloys nickel chromium Inconel 625 me 718 e whakaatu ana i nga mahi tino pai mo te pumau o te wera me te aukati i te ngenge, he mea nui rawa atu mo nga miihini whakarewa whakarewa e hiahia ana kia mahi pono i runga ake i te 600 nekehanga Celsius. He aha e hanga enei rauemi tu atu ko to ratou gamma rua tuatahi wāhanga whakapakari tikanga e homai ana ki a ratou ātete tino ki te rere me te wera raruraru mauiui pūkaha. He tino utu enei taonga i roto i nga taiao e hiahiatia ana penei i nga whare whakapau turbine kei reira te rereketanga o te pāmahana, nga punaha taraiwa taraiwa taraiwa, me nga momo taputapu whakaputa hiko teitei. I te wa e hangaia ana enei waahanga, ka hangaia e nga hangarau miihini laser nga hononga me te iti rawa o te whakararuraru i te wa e pupuri ana i te rohe e pa ana ki te wera. Ko te tikanga o tenei ko nga taonga matua o te ranunga taketake ka noho tonu i muri i te whakarewa, me te pupuri i nga ahuatanga kaha me te kaha. He aha te hua? Ko nga hononga honohono kaore e ngoikore i te waa, ka taea ai e enei waahanga te roa atu i nga alloys paerewa ka whakahaerehia i raro i nga ahuatanga huringa wera rite i kitea i nga tono o te ao tuuturu.

Hastelloy C-276 me te Titanium Grade 9: Ngā Pūpū Huinga Kōrero o te Mātātoko i te Whakamātautau, mō ngā rākau āhua pūngao me ngā rākau āhua rākau

Ko te huinga ahurei o te molybdenum, nickel, me te chromium i roto i te Hastelloy C-276 ka tino aukati i nga momo waikura tae atu ki te pitting, te waikura pakaru, me te pakaru o te waikura. He tino pai te pupuri o tēnei rauemi ahakoa ka whakaekea ki ngā āhuatanga uaua pēnei i ngā rongoā waikawa hydrochloric wera me ngā taiao e utaina ana ki ngā pūhui kōora. Nā ēnei āhuatanga, ka tohua e ngā kaipūkaha tēnei konumohe mō ngā wāhanga o ngā taputapu hanga haurua-kaituku e puta ai ngā tukanga whakairo, tae atu ki ngā kōpae i roto i ngā ruma hauā e pā ana ki ngā hau haurangi kaha i te wā e mahi ana. I tētahi atu taha, ko te Titanium Grade 9 (Ti-3Al-2.5V) e tuku ana i tētahi mea rerekē engari he mea utu anō. He tino pai te mahi i roto i ngā tono wai moana, ā, ka mau tonu te hanganga o te hanganga i te taha o ngā waikura kaha, ā, ka whakarato i te 40% te whakaiti i te taumaha i whakaritea ki ngā maitai kore waikura tuku iho. Mo tenei take, ka whiriwhiri nga kaihanga rererangi Ti-3Al-2.5V mo nga waahanga penei i nga kaiwhakatere hauhautanga rererangi me nga pupuhi punaha wahie ka pa ki nga matū de-iceing ka ruku ranei ki te wai tote i nga wa ohorere. Heoi anō, he uaua ngā rauemi e rua. He mea tika kia whakamahia ngā tikanga whakawera motuhake hei tiaki i tō rātou hanganga ā-iti, hei ārai hoki i ngā raruraru e pā ana ki te hononga kōaro ina whakakotahitia ki ētahi atu konganuku i roto i ngā hui matatini. He tino hira ēnei whakaaro ina hangaia ngā pūnaha e hiahiatia ana he paerewa parakore tino tiketike, e mahi ana rānei i raro i ngā whakaritenga haumaru tino nui.

Tātai Whakamātautau Kōpū: Te Whakamātātutu i ngā Huinga Tātai Kōpū o ngā Tātai Kōpū o ngā Tātai Kōpū ki ngā Āhua o te Whakamāhi

He whakamātautau i ngā āhua e whā e whai ana kia taea te whiriwhiri i te huinga tātai pai rawa atu mō ngā tātai kōpū tātai: ngā pānga o te hāngā o te hāngā, ngā pānga o ngā hāngā kimikā, ngā pānga o ngā hāngā whakamāhi, me ngā rere o te hāngā.

Werawera: Ko ngā porowhita o te wāhi o te wāhi (hei tauira, 321, 347) he pai hei whakamāhi i raro i te 400–500°C; ko ngā huinga nikilē (hei tauira, Inconel 718) e whakamāna ana i te kaha o te whakamāhi i runga ake i te 600°C. Ko te whakamātautau i te tau o te whānui o te hāngā (CTE) i te whakamāhi i ngā wāhi e tata ana he mea matua kia kore ai ngā pānga o te hāngā i te whakamāhi o te hāngā.

Te Taiao o te Whakamāhi: Ko Hastelloy C-276 he pai rawa atu i te whakamāhi i ngā hāngā whakamāhi me ngā halogeni i te whakamāhi i ngā rorohiko; ko te titanium Grade 9 he pai rawa atu i te whakamāhi i ngā hāngā whakamāhi me te wai tai i ngā pūnaha o te wāhi me ngā moana.

Te Oranga o ngā Hāngā: Ko te 316L o te whakamātautau pūmau teitei e taea ana te 10⁵ ngā whakamātau i te whakamātautau i te 15% o te whakamātautau i ngā whakamātau pākihi iti; ko te Inconel 625 e taea ana te 100,000 ngā whakamātau i ngā wāhi mātua me ngā pākihi teitei. Me whakamātau ngā whakamātau ā-hāngā me ngā whakamātau ā-tinana i ngā whakamātau kia whakamātautau i te wā tonu i mua i te whakamātautau.

Te Pākihi me te Tūtūnga o ngā Tāwhai: He hāngā kaha rawa ngā tāwhai iti kia whakamātautau i te rohe o te tāwhai (HAZ)—i tēnei he whakamātautau i ngā āhua o ngā rākau me ngā whakamātautau i te pākihi iti—kia kitea ai ngā whakamātautau o te whakamātautau, i te whakamātautau rānei. He tohutohu kaha ngā tāwhai o te lāser hei whakamātautau mō ngā tāwhai kaha katoa kia iti ake ngā whakamātautau o ngā whakamātautau me te whakamātautau i te tūtūnga o ngā tāwhai i te tāwhai.

Ko tēnei whakarāpopai o ngā whakamātautau e whakamātautau i ngā tāwhai o ngā tāwhai kia whakamātautau i ngā whakamātautau kia tika, kia pūmau hoki i te whakamātautau i ngā āhua o ngā rākau i te whakamātautau i ngā āhua o te ao—kāore he whakamātautau kia pūmau, kāore hoki he whakamātautau i ngā āhua o te whakamātautau.

Ngā Pātai e Patai Pūnoa Ana

He aha ngā whakamātautau o ngā bellows mātātoko?

Ka whakamahia ngā pūkaha whakarewa whakairo i roto i ngā momo tono e hiahiatia ana te ngohengohe me te roa i raro i ngā āhuatanga o te pēhanga me te pāmahana huringa, pērā i ngā papu matū, pūnaha HVAC, ngā piha whakahaere tukanga, ngā pūnaha pūngao rererangi, me ngā hauota waka.

He aha te Rohe Whakaawe-Whakawera (HAZ) i roto i te whakawera?

Ko te Rohe-Whakamahia-Whakaawe (HAZ) te rohe o te konganuku e karapoti ana i te maimoatanga i reira kua hurihia nga taonga na te wera o te maimoatanga. Ka taea e tēnei rohe te whakaatu i ngā huringa o te hanganga o te witi, e arahi ana ki ngā ngoikoretanga pea mēnā kāore e tika te whakahaere.

He aha te mea nui ai te aukati i te waikura i roto i nga pūkaha whakarewa?

He mea nui te aukati i te waikura i roto i nga pūkaha whakarewa no te mea he maha nga wa e mahi ana i roto i nga taiao me nga matū kaha, te tote, te waikura ranei. Ko te ātete waikura pai ka āwhina ki te whakawhānui i te ora o te ratonga me te pupuri i te tika o te wāhanga.

Ka taea te whakamahi i ngā pūkaha maitai kore i ngā pāmahana tiketike?

Ko ēnei āhua o te kōpae pātata, pērā i te 321 me te 347, i whakamātua kia taea ai te whakamāhi i ngā wāhi hāngai ki ngā wāhi pūmau, ā, ko ngā whakamāhi he rite ki ngā manifōlde o te wāhi whakamutu, i reira ka piki ake ngā hāngai.