I roto i ngā paipa ahumahi me ngā tono hanganga,ngā paipa maitai kore honongaHe tūranga nui tō rātou nā ō rātou painga ahurei. Ko ō rātou rerekētanga mai i ngā paipa whakarewa me ō rātou āhuatanga ā-roto he mea nui hei whiriwhiri i te paipa tika.
He nui ngā painga matua o ngā paipa rino kore hononga i ngā paipa whakarewa. Mā te whakarewa i ngā pereti rino ka hangaia ngā paipa whakarewa, ka hua ake he hononga whakarewa. Ka whakawhāitihia e tēnei te ātete ki te pēhanga, ā, ka taea te turuturu i raro i ngā āhuatanga pāmahana teitei me te pēhanga teitei nā te kukū o te ahotea i ngā hononga. I tētahi atu taha, ka hangaia ngā paipa rino kore hononga mā te tukanga hanga hurihuri kotahi, ka whakakorea ngā hononga. Ka taea e rātou te tu atu ki ngā pēhanga me ngā pāmahana teitei ake, ka nui ake te pono i roto i ngā tono pēnei i te kawe hinu me te hau me ngā poiha pēhanga teitei. Hei tāpiri, ka tukuna e ngā paipa rino kore hononga he ōrite te matotoru o te pakitara, ka whakakorea ngā rerekētanga matotoru o te pakitara ā-rohe i puta mai i te whakarewa, ka whakapai ake i te pumau o te hanganga, ā, ka tukuna he ātete waikura whakarei ake. Ko te roa o tō rātou oranga mahi he neke atu i te 30% te roa ake i ngā paipa whakarewa.
He uaua, he uaua hoki te tukanga whakaputa mō ngā paipa maitai kore hononga, ko te nuinga ko te huri wera me te kume makariri. Ka whakamahanahia e te tukanga huri wera te pereki maitai totoka ki te 1200°C pea, kātahi ka hurihia mā roto i te mira wero ki roto i te ngongo tuwhera. Kātahi ka haere te ngongo mā roto i te mira rahi hei whakatika i te diameter me te mira whakaiti hei whakahaere i te matotoru o te pakitara. Hei whakamutunga, ka whakamataohia, ka whakatikatikahia, ka kitea ngā hapa. Ka whakamahia e te tukanga kume makariri te ngongo huri wera hei rauemi mata. Whai muri i te whakamātao hei tango i te unahi waikura, ka tuhia ki te āhua mā te whakamahi i te mira kume makariri. Kātahi ka hiahiatia te whakamahana hei whakakore i ngā ahotea o roto, ā, muri iho ka oti me te tirotiro. O ngā tukanga e rua, he pai ngā ngongo huri wera mō ngā diameter nui me ngā pakitara matotoru, ko ngā ngongo kume makariri ia he pai ake mō ngā diameter iti me ngā tono tino tika.
Kei roto i ngā paipa maitai tui he paerewa ā-motu me ā-ao hei whakatutuki i ngā hiahia kanorau.
Ko ngā rauemi o te whare ko te maitai waro me te maitai koranu:
Ko te maitai 20#, te maitai waro e whakamahia whānuitia ana, he tino pai te kirihou me te ngāwari ki te tukatuka, ā, e whakamahia whānuitia ana i roto i ngā paipa whānui.
He kaha ake te maitai 45#, ā, he pai mō ngā wāhanga hanganga mīhini. I roto i ngā paipa maitai koranu, he ātete te maitai 15CrMo ki ngā pāmahana teitei me te ngokingoki, ā, he rauemi matua mō ngā kohua tipu hiko.
Nā te ātete pai ki te waikura, he tino pai te pai o te paipa kowiri tira 304 i roto i ngā ahumahi matū me te tukatuka kai.
E whakamahia whānuitia ana hoki ngā rauemi paerewa o te ao:
E ai ki te paerewa ASTM o Amerika,Paipa maitai waro A106-Bhe mea noa mō te kawe hinu me te hau māori. Ka eke tōna kaha kume ki te 415-550 MPa, ā, ka taea te tu atu i ngā pāmahana mahi mai i te -29°C ki te 454°C.
Nā te hanganga o te koranu chromium-molybdenum-vanadium, ka tino kaha te paipa koranu A335-P91 ki te pāmahana teitei me te ātete ki te waikura, ā, he mea nui tēnei hei whakamahi i roto i ngā paipa mamaoa matua o ngā kohua tipu hiko tino kaha.
E ai ki te paerewa EN a Ūropi, he pai te maitai waro P235GH mai i te raupapa EN 10216-2 mō ngā kohua me ngā oko pēhanga reo-pēhanga me te iti.
He kaha ake te paipa koranu P92 i te P91 i roto i te manawanui pāmahana teitei, ā, koinei te whiringa pai mō ngā kaupapa hiko wera nui. He nui te utu o ngā paipa waro STPG370 paerewa JIS, ā, e whakamahia whānuitia ana i roto i ngā paipa ahumahi whānui.
Paipa kowiri tira SUS316L, i hangaia ki te maitai kore waikura 304, ka tāpirihia te molybdenum hei whakanui ake i tōna ātete ki te waikura o te katote hauhāora, kia pai ai mō te miihini moana me te kawe matū waikawa me te kawakore.
Mō ngā ine, ko te diameter o waho o ngā paipa rino tui kore he hononga kei waenga i te 10mm ki te 630mm, me te matotoru o te pakitara kei waenga i te 1mm ki te 70mm.
I roto i te hangarau tuku iho, ko ngā diameter o waho o te 15mm ki te 108mm me ngā matotoru o te pakitara o te 2mm ki te 10mm ngā mea e whakamahia whānuitia ana.
Hei tauira, ko ngā paipa he 25mm te whānui o waho, ā, he 3mm te matotoru o te pakitara e whakamahia ana i roto i ngā pūnaha waipēhi, ko ngā paipa he 89mm te whānui o waho, ā, he 6mm te matotoru o te pakitara e pai ana mō te kawe i ngā mea matū.
Tuatahi, manatokohia te tiwhikete rauemi kia tino tutuki ai ngā whakaritenga hoahoa i roto i te hanganga matū me ngā āhuatanga miihini. Hei tauira, kaua e iti iho i te 245 MPa te kaha tuku o te maitai 20#, ā, me ≥240 MPa te kaha tuku o te ASTM A106-B.
Tuarua, tirohia te kounga o te āhua. Me kore he hapa o te mata pēnei i te pakaru me te takai, ā, me whakahaere te rerekētanga o te matotoru o te pakitara i roto i te ±10%.
Hei tāpiri atu, tīpakohia ngā hua me ngā tukanga me ngā rauemi e tika ana i runga i te horopaki tono. Ko ngā paipa me ngā koranu hurihuri-wera pēnei i te A335-P91 e pai ake ana mō ngā taiao pēhanga teitei, ko ngā paipa tōia-matao e tūtohutia ana mō ngā taputapu tika. Ko ngā paipa maitai kore waikura SUS316L e tūtohutia ana mō ngā taiao moana, ngā taiao waikura-nui rānei.
Hei whakamutunga, tonoa te kaiwhakarato kia whakarato i tētahi pūrongo kimi hapa, me te arotahi ki te tautuhi i ngā hapa huna o roto hei karo i ngā take kounga ka pā ki te haumaru o te kaupapa.
Koinei te mutunga o te kōrero mō tēnei take. Mena kei te hiahia koe ki te ako atu mō ngā paipa maitai kore hononga, tēnā whakapā mai ki a mātou mā ngā tikanga e whai ake nei, ā, ka koa tā mātou tīma hokohoko ngaio ki te āwhina i a koe.
RŌPŪ KĪNGI
Wāhitau
Te rohe ahumahi whanaketanga o Kangsheng,
Takiwa o Wuqing, taone nui o Tianjin, Haina.
Ī-mēra
Ngā Hāora
Mane-Rātapu: Ratonga 24-hāora
Wā tuku: Hepetema-04-2025