Ngā Pūrongo - Ngā Koiri Rino Wera-hurihia: Te Pou Matua o te Marae Ahumahi

I roto i te pūnaha ahumahi hou, ko ngā koiri rino hurihuri wera he rauemi taketake, ā, ko te kanorau o ngā tauira me ngā rerekētanga mahi ka pā tika ki te ahunga whanaketanga o ngā ahumahi o raro. He mahi nui tā ngā tauira rerekē o ngā koiri rino hurihuri wera i roto i ngā mara o te hanga, ngā motuka, te pūngao, me ētahi atu, me ō rātou hanganga matū ahurei me ngā āhuatanga miihini. Ka arotahi ngā mea e whai ake nei ki te tātari i ngā tauira koiri rino hurihuri wera me te tono nui rawa atu o te mākete me ō rātou rerekētanga matua.

Te Ope Taua Matua Taketake: Q235B me SS400
Ko te Q235B te maitai hanganga waro-iti e whakamahia whānuitia ana i Haina, me te ihirangi waro tata ki te 0.12%-0.20%, ā, he pai te kirihou me te āhuatanga whakarewa. Ko tōna kaha whakaputa he ≥235MPa, ā, e whakamahia whānuitia ana i roto i ngā anga hanga, ngā tautoko piriti me ngā wāhanga miihini whānui. I roto i te umanga hanga, ko ngā kurupae-I, ngā maitai hongere me ētahi atu maitai i hangaia mai i ngā koiri maitai Q235B wera-hurihuri e neke atu ana i te 60%, e tautoko ana i te angaanga o ngā hanganga tāone.
He maitai hanganga waro te SS400 e whakamahia ana i te ao katoa, he rite te kaha ki te Q235B, engari he kaha ake te whakahaere i ngā poke whanariki me te whākawa, ā, he pai ake te kounga o te mata. I roto i te ao hanga kaipuke, he maha ngā wā ka whakamahia ngā koiri hurihuri wera SS400 mō ngā wāhanga hanganga o te anga kaipuke. He pai ake tōna ātete ki te waikura i te wai moana i te maitai waro noa, e whakarite ana i te haumaru o ngā haerenga moana.

Ngā Māngai Kaha: Q345B me Q960
He rino kaha-teitei te Q345B, he iti-koranu te konupora, he 1.0%-1.6% te konupora i tāpirihia, ā, kei runga ake i te 345MPa te kaha whakaputa. Ki te whakatauritea ki te Q235B, ka piki ake tōna kaha mā te 50% pea, me te pupuri tonu i te kaha whakarewa. I roto i te hangarau piriti, ka taea e ngā whitiki pouaka i hangaia ki ngā koiri rino hurihuri-wera Q345B te whakaiti i te taumaha mā te 20%, ka tino whakaiti i ngā utu hangarau. I te tau 2023, ka pau i te hanganga piriti ā-rohe neke atu i te 12 miriona tana o ngā koiri hurihuri-wera Q345B, e 45% o te katoa o te putanga o tēnei momo.
Hei tohu noa mō te maitai tino kaha, ka eke te Q960 ki te kaha whakaputa o te ≥960MPa mā te hangarau microalloying (tāpiri vanadium, titanium me ētahi atu huānga) me ngā tukanga hurihuri me te whakamatao whakahaere. I roto i te mara o ngā mīhini hangarau, ka taea te whakaiti i te matotoru o te ringa kerēni i hangaia ki te koiri hurihuri wera Q960 ki raro iho i te 6mm, ā, ka whakanuia te kaha kawe kawenga e 3 ngā wā, e whakatairanga ana i te whakapai ake i te mama o ngā taputapu pēnei i ngā keri me ngā kerēni.

Paearu Motuhake: SPHC me SAPH340
He hua tino pai te SPHC i waenga i ngā maitai waro-iti kua hurihia wera-whakamahana. Mā te arotau i te tukanga hurihuri hei whakahaere i te rahi o te kōpura, ka eke te roa ki te neke atu i te 30%. I roto i te umanga taputapu kāinga, ka whakamahia ngā koiri hurihuri wera SPHC hei hanga i ngā whare whakapūmau pouaka whakamātao. Mā tana mahi kukume hohonu ka whakarite kia neke atu i te 98% te tere o te hanganga mata piko matatini. I te tau 2024, ka piki ake te kai o ngā koiri hurihuri wera SPHC i roto i te mara taputapu kāinga ā-whare mā te 15% ia tau ki te 3.2 miriona tana.
Hei maitai hanganga motuka, ka tutuki i te SAPH340 te taurite i waenga i te kaha me te pakari mā te tāpiri i te 0.15%-0.25% waro me te boron iti. I roto i te hanga anga pākahiko waka hiko hou, ka taea e ngā koiri hurihuri wera SAPH340 te tu atu i ngā kawenga hihiri neke atu i te 500MPa me te whakatutuki i ngā whakaritenga o ngā tukanga whakarewa ira. I te tau 2023, kua eke te ōwehenga o ngā koiri hurihuri wera o tēnei momo e whakamahia ana i roto i ngā waka hiko hou o te whare ki te 70% o ngā wāhanga hanganga pākahiko.

Tauira	Kaha Hua (MPa)	Te roa (%)	Ngā horopaki tono noa
Q235B	≥235	≥26	Ngā hanganga hanga, ngā mīhini whānui
Q345B	≥345	≥21	Ngā piriti, ngā oko pēhanga
SPHC	≥275	≥30	Ngā taputapu kāinga, ngā wāhanga motuka
Q960	≥960	≥12	Ngā mīhini hangarau, ngā taputapu kounga teitei