Ngā Pūrongo - He Kupu Whakataki ki te Mekameka Hiki o ngā Taumata: G80, G100 me te G120

Te hiki i ngā mekameka me ngā taurahe wāhanga nui ēnei i roto i ngā ahumahi hanga, whakangao, keri maina, me te moana katoa. Ko tā rātou mahi e whakawhirinaki ana ki te pūtaiao rauemi me te hangarau tika. Ko ngā tohu mekameka o G80, G100, me G120 e tohu ana i ngā wāhanga kaha teitei ake, e tautuhia ana e tō rātou kaha kume iti rawa (i roto i te MPa) whakareatia ki te 10:

- G80: 800 MPa te kaha kume iti rawa

- G100: 1,000 MPa te kaha kume iti rawa

- G120: 1,200 MPa te kaha kume iti rawa

Ka piri ēnei tohu ki ngā paerewa o te ao (hei tauira, ASME B30.9, ISO 1834, DIN EN818-2) ā, ka tirotirohia me te whakamātautauhia kia tino pono ai i raro i ngā kawenga hihiri, ngā pāmahana tino kino, me ngā taiao waikura.

1. Ngā Rauemi me te Hangarau Whakarewa: Te Pūtaiao kei Muri i ngā Reanga Mekameka Hiki

Ko ngā āhuatanga ā-pūkaha o ēnei mekameka hiki i ahu mai i te kōwhiringa koranu tika me te maimoatanga wera.

Tau	Rauemi turanga	Te maimoatanga wera	Ngā Huānga Whakakotahi Matua	Ngā Āhuatanga Hanganga Moroiti
G80	maitai waro-waenga	Te Whakamātao me te Whakamātao	C (0.25-0.35%), Mn	Martensite kua whakapakeketia
G100	Rino kaha-teitei, iti-koranu (HSLA)	Te tinei whakahaere	Kr, Mo, V	Bainite/martensite kikokore
G120	maitai HSLA matatau	Te whakatikatika tika	Cr, Ni, Mo, Nb/V whakakoi-iti	Te mararatanga o te carbide tino pai

He aha, ā, he aha te hiranga o ēnei rauemi:

- Te Whakarei KahaKa hangaia e ngā huānga whakarewa (Cr, Mo, V) ngā warowaihā e aukati ana i te nekehanga o te nekehanga, e whakanui ana i te kaha tuku me te kore e whakaiti i te ngāwari.

-Ātete ki te ngenge: Ka āraihia te tīmatanga o te pakaru e ngā hanganga moroiti angiangi o te G100/G120. He pai ake te roa o te ora o te ngenge nā te martensite kua whakapakeketia o te G120 (>100,000 huringa i te 30% WLL).

- Ātete KakahuMā te whakapakeketanga o te mata (hei tauira, te whakapakeketanga āputa) i roto i te G120 ka whakaitihia te pakū i roto i ngā mahi waku-nui pērā i te keri i ngā raina tōia.

Ngā Tikanga Whakarewa mō te Pūmautanga o te Mekameka

•Te Whakarite i mua i te Whakarewa:

Horoia ngā mata o ngā hononga hei tango i ngā waikura/ngā poke.

Whakamahanahia ki te 200°C (G100/G120) hei ārai i te pakaru o te hauwai.

•Ngā Tikanga Whakarewa:

o Te Whakarewa Taiaho: Mō ngā mekameka G120 (hei tauira, ngā koranu Al-Mg-Si), ka hangaia e te whakarewa taha-rua ngā rohe hanumi me te HAZ āhua-H hei tohatoha i te ahotea ōrite.

Waea Wera TIG: Mō ngā mekameka maitai pūwero (hei tauira, 10Cr9Mo1VNb), ka whakaitihia te hē o te hononga o te whakarewa maha-haerenga.

•Tohutohu Tino Hiranga:Āta karohia ngā hapa āhuahanga i roto i ngā HAZ – ngā wāhi tīmatanga o ngā kapiti nui i raro i te 150°C.

Ngā Tawhā Maimoatanga Wera i Muri i te Whakarewa (PWHT)

Tau	Te pāmahana PWHT	Wā Pupuri	Huringa Hanganga Moroiti	Whakapai ake i te Whare
G80	550-600°C	2-3 hāora	Martensite kua whakapakeketia	Whakaora i te ahotea, +10% te pakari o te pānga
G100	740-760°C	2-4 hāora	Mararatanga kāpira pai	15%↑ kaha ngenge, HAZ ōrite
G120	760-780°C	1-2 hāora	Ārai i te whakakorikori o te M₂₃C₆	Ka ārai i te ngaronga o te kaha i te pāmahana tiketike

Kia tūpato:Mā te neke atu i te 790°C ka pā te matotoru o te kāpia → ka ngaro te kaha/ngāwari.

2. Te Mahi a te Hiki i ngā Mekameka i ngā Āhuatanga Tino Kino

E hiahia ana ngā taiao rerekē ki ngā otinga rauemi kua whakaritea.

Ātete Pāmahana:

- G80:He pumau te mahi tae atu ki te 200°C; me te ngaronga tere o te kaha i runga ake i te 400°C nā te hurihanga o te whakatikatika.

- G100/G120:Ka mau tonu te kaha o ngā mekameka ki te 80% i te 300°C; ko ngā momo motuhake (hei tauira, me te Si/Mo tāpiri) ka ātete ki te pakarukaru tae noa ki te -40°C mō te whakamahinga o te Arctic.

Ātete ki te Waikura:

- G80:He ngāwari ki te waikura; me pania pinepine ki te hinu i ngā taiao makuku.

- G100/G120:Kei roto i ngā kōwhiringa ko te whakapūmau (whakakikoruatia ki te konutea) me ngā momo kowiri tira (hei tauira, 316L mō ngā tipu moana/matū). Ka tu atu te G100 whakapūmau ki te 500+ hāora i roto i ngā whakamātautau rehu tote.

Te Ngenge me te Pakari Pānga:

- G80:He rawaka mō ngā kawenga pūmau; te pakari o te pānga ≈25 J i te -20°C.

- G120:He pakari tino pai (>40 J) nā te tāpiritanga o te Ni/Cr; he mea tino pai mō te hiki hihiko (hei tauira, ngā kerene i roto i te wāhi hanga kaipuke).

3. Aratohu Kōwhiringa Motuhake mō te Taupānga

Mā te whiriwhiri i te momo tika ka pai ake te haumaru me te whai hua o te utu.

Ngā tono	Te Tohu i Manakohia	Pūtake
Hanganga Whānui	G80	He iti te utu mō ngā taiao taumaha/maroke; hei tauira, ngā tūāpapa.
Te Hiki i te Moana/Ki tai	G100 (Pūoro)	He kaha teitei + ātete ki te waikura; ātete ki te pakaru o te wai moana.
Keri/Te keri whenua	G120	Ka whakanui ake i te ātete ki te pakaru i te wā e whakahaere ana i te toka whakakoi; ka tu atu i ngā kawenga pānga.
Teitei-Pāmahana (hei tauira, Ngā Mira Rino)	G100 (Momo i whakamahanahia)	Ka mau tonu te kaha tata ki ngā oumu (tae atu ki te 300°C).
Ngā Hiki Hihiri Tino Hira	G120	Ātete ki te ngenge mō ngā hiki hērakapa, mō te tāutanga taputapu hurihuri rānei.

4. Ngā Māramatanga mō te Ārai i te Rahunga me te Tiaki

- Te ngoikore o te ngenge:Tino kitea i roto i te uta hurihuri. Mā te ātete pai o te G120 ki te horapa o ngā kapiti ka whakaiti i tēnei mōrearea.

- Te pakaru o te waikura:Ka whakaiti i te kaha; e 3x te roa o te mau o ngā whitiki G100 piauau ki ngā takutai moana, ki te whakataurite ki te G80 kāore i pania.

- Tirotiro:E whakahau ana a ASME kia tirohia ia marama mō ngā kapiti, te kakahu neke atu i te 10% te whānui, te roa rānei. Whakamahia he whakamātautau matūriki aukume mō ngā hononga G100/G120.

5. Te Whakatenatena i ngā Auahatanga me ngā Auahatanga o te Ao kei te heke mai

- Ngā Mekameka Atamai:Ngā mekameka G120 me ngā pūoko totoro kua whakauruhia mō te aroturuki kawenga wā-tūturu.

- Ngā paninga:Ngā paninga nano-uku i runga i te G120 hei whakaroa i te roa o te mahi i roto i ngā taiao waikawa.

- Pūtaiao Rauemi:Rangahau mō ngā momo maitai austenitic mō te hiki i te wai (ngā tono LNG -196°C).

Whakamutunga: Te Whakataurite i te Tohu o ngā Mekameka ki ō Hiahia

- Kōwhiria te G80mō ngā ararewa pateko e aro nui ana ki te utu, kāore e waikura.

- Tauwhāitihia te G100mō ngā taiao waikura/hihiri e hiahia ana kia taurite te kaha me te manawanui.

- Kōwhiria te G120i ngā āhuatanga tino kino: te ngenge nui, te karawarawa, ngā hikitanga tino tika rānei.

Tuhipoka Whakamutunga: Whakaritea ngā mekameka whaimana me ngā maimoatanga wera ka taea te whai. Mā te whiriwhiri tika ka ārai i ngā rahunga kino—ko te pūtaiao rauemi te pou tuarā o te haumaru hiki.

Wā tuku: Pipiri-17-2025