1. Ngā paerewa whakatinanatanga
Whakaūtia te putanga hou o ASTM A333/A 333M (kua whakarerekētia te hanganga matū o te putanga i muri i te tau 2016, ā, kua tāpirihia ngā here huānga hou pēnei i te Cr, Ni, me te Mo).
2. Te whakahaere i te hanganga matū
Ngā herenga matua o ngā huānga:
C≤0.30% (he iti te waro e whakapūmau ana i te pakari), Mn 0.29-1.06% (kua whakatikatikaina ki te ihirangi C), P≤0.025%, S≤0.025% (kia tino whakawhāitihia ngā huānga kino).
Kei te putanga 2016 ngā rohenga mōrahi mō te Ni, Cr, Mo, me ētahi atu (pērā i te Ni≤0.40%), ā, me tirotiro mēnā kua tohua te pukapuka pūtāhui ki te ōrite waro (CET).
Whakapai ake i ngā rauemi: Kua whakahoutia te putanga hou o A333GR6 mai i te maitai C-Mn ki te maitai koranu iti, me te mahi pai ake.
1. Ngā āhuatanga miihini
Kaha kume ≥415MPa, kaha hua ≥240MPa, ōwehenga kaha hua iti (e whakaata ana i te kaha whakarerekētanga kirihou)
Whakamātautau pānga pāmahana iti:
Ka rerekē te pāmahana whakamātautau i runga i te matotoru o te pakitara (pēnei i te -45℃~-52℃), ā, me mārama te whakamārama i ngā whakaritenga o te kirimana.
Me tutuki te uara pūngao pānga i te paerewa, me ≥20J te nuinga o te wā (tirohia te ASTM A333 mō ētahi atu kōrero).
2. Hanganga whakarewa
Me rite te āhua o te tukunga o te ferrite me te pearlite, me te rahi o te kōhao o te 7~9 (ka taea e ngā kōhao taratara te whakaiti i te ōwehenga kaha hua).
He pai ake te whiriwhiri i ngā paipa rino kua tineia me te whakamakuku (he troostite te hanganga kua whakamakukuhia, ā, he pai ake te pakari i te pāmahana iti).
Te tukanga maimoatanga wera
Me whakarato ngā tuhinga maimoatanga wera: te whakamahana ≥815℃→te tinei wai→te whakamahana kia ōrite ai te hanganga.
Āta karohia te āhua taketake kāore i te rongoatia, i te kore rānei i te rongoatia tika (ka pakarukaru te hanganga taratara i te pāmahana iti).
Tūnga tuku
I te nuinga o te wā ka tukuna i roto i te āhua kua whakaritea + kua whakamakukuhia, kua tineihia + kua whakamakukuhia rānei, me tohu tēnei i roto i te kirimana.
1. Te hononga matotoru o te pakitara me te pāmahana pānga
Hei tauira: ina 7.62mm te matotoru o te pakitara, me eke te pāmahana whakamātautau pānga ki te -52℃ (iti iho i te paerewa -45℃).
Ngā whakatakotoranga wāhi noa: 8-1240mm×1-200mm (SCH5S-XXS), me tirotiro te tono tuturu.
2. Rauemi rerekē ōrite
A333GR6≈X42N/L290N/API 5L B PSL2 (paipa raina), engari me whakaū mēnā kua tutuki te mahi pāmahana iti.
Ngā tuhinga me tirotiro
Tiwhikete rauemi (MTC), pūrongo maimoatanga wera, pūrongo whakamātautau pānga pāmahana iti, pūrongo whakamātautau kore-whakangaro (UT/RT).
I muri i te putanga 2016, me whakauru ngā raraunga whakamātautau o ngā huānga koranu hou (Ni, Cr, me ētahi atu) kua tāpirihia.
Arotakenga anō a te rōpū tuatoru
E taunakihia ana kia tirohia anō ngā tūemi matua (pēnei i te whakamātautau pānga, te hanganga matū) mā te tango tauira, inā koa mō ngā tono mōrearea nui (pēnei i ngā paipa LNG).
Awhe pāmahana
I roto i ngā āhuatanga pāmahana tino iti (pēnei i te -195℃) kua hoahoatia, me arotake mēnā e hiahiatia ana he taumata teitei ake (pēnei i te A333GR3/GR8).
Te tono ahumahi
Me whai whakaaro ki ngā matū hinu (ethylene, LNG), ngā taputapu whakamatao, ngā paipa cryogenic, me ētahi atu, ki te tiaki tāpiri (pēnei i te paninga) i runga i te kaha waikura o te reo.
Ngā Tohu Mātauranga me te Mahi
Ko te mea pai ko te whiriwhiri i ngā kaihanga he tohu whakaputa ASTM A333, ā, me hiahia hoki ki ngā pouaka tuku mō ngā kaupapa ōrite.
Kia tūpato ki ngā whanonga "OEM" a ngā kaihokohoko, me te manatoko i ngā tuhinga pūtāhui taketake a te wheketere.
Te utu me te wā tuku
Ahakoa he iti iho te utu o te putanga iti-koranu (i mua i te tau 2016), he nui te rerekētanga o te mahi, ā, me whai hua te utu whānui.
Me whakarite pea ngā whakaritenga motuhake (pēnei i ngā paipa he matotoru te whānui), kia roa ake ai te huringa tuku.
Mōrearea pōhēhē: Kaua e pōhēhē te A333GR6 me te A335GR6 (te maitai chromium-molybdenum mō te pāmahana teitei).
Ngā taonga paerewa tawhito: Whakaūtia mēnā i hangaia te paipa maitai i muri i te putanga 2016 kia kore ai e tutuki i ngā paerewa ngā huānga koranu o ngā hua paerewa tawhito.
Te tukanga whakarewa: Me whakamahi ngā rauemi whakarewa ōrite (pēnei i te ENiCrMo-3) hei whakarewa i ngā paipa maitai pāmahana-iti, ā, me whakarato te kaiwhakarato i ngā aratohu whakarewa.
Mā ngā kōrero o runga ake nei, ka taea e te kaihoko te arotake pūnaha i te tutuki i ngā whakaritenga, te taurite mahi me te pono o te paipa koranu A333GR6 a te kaiwhakarato kia mau ai te haumaru me te whai huatanga o te kaupapa.
Wā tuku: Pipiri-12-2025
