Te kimi hapa o te pereti maitai ASTM-SA516Gr60Z35:
1. Paerewa whakahaere SA516Gr60: Ngā paerewa o Amerika ASTM, ASME
2. No te oko pēhanga pāmahana iti te SA516Gr60 me te pereti maitai waro
3. Te hanganga matū o SA516Gr60
C≤0.30, Mn: 0.79-1.30, P≤0.035, S: ≤0.035, Si: 0.13-0.45.
4. Ngā āhuatanga miihini o SA516Gr60
Ko te kaha kume SA516Gr60 he 70 mano pauna/inihi tapawhā, ko te ihirangi huānga matua ko te C Mn Si ps te mea e whakatau ana i tana mahi. Ko ētahi atu huānga iti iho. Ko te Whakatakotoranga Paerewa Asme mō ngā pereti maitai waro mō ngā oko pēhanga pāmahana reo me te iti.
5. Te tūnga tuku o SA516Gr60
Ko te pereti maitai SA516Gr60 e tukuna ana i te nuinga o te wā i roto i te āhua hurihuri, ka taea hoki te whakarite i te pereti maitai, te whakaiti i te ahotea, te whakarite me te whakaiti i te ahotea rānei.
Me whakataurite te matotoru o te pereti maitai SA516Gr60 >40mm.
Ki te kore e tohua tētahi atu mea e te kaitono, me whakataurite te matotoru o te pereti maitai ≤1.5inihi, (40mm), ina he whakaritenga pakari kua tohua.
6. E whakamahia ana te SA516Gr60 hei hanga i ngā ipu whakarewa koiri paparanga kotahi, i ngā ipu whakarewa koiri ringaringa wera maha-paparanga, i ngā ipu whakakakahu maha-paparanga me ētahi atu momo ipu e rua, e toru rānei me ngā ipu pēhanga pāmahana-iti. He whānuitia te whakamahinga i roto i te hinu, te ahumahi matū, te teihana hiko, te pōro me ētahi atu mahi, e whakamahia ana hoki i roto i te hanga i ngā tauhohenga, ngā whakawhiti wera, ngā wehewehe, ngā tāke porowhita, ngā tāke hinu me te hau, ngā tāke hau wairewa, te pahu pōro, ngā rango mamaoa hinu wairewa, ngā paipa wai pēhanga-teitei o te teihana hiko wai, te hiko tāpoi me ētahi atu taputapu me ngā wāhanga.
7. Ina āta whakamataohia te austenite (he rite ki te whakamatao i roto i te oumu, e whakaaturia ana i te Pikitia 2 V1), ka tata ngā hua whakawhiti ki te hanganga taurite, arā, ko te pearlite me te ferrite. I te pikinga ake o te tere whakamatao, arā, ina V3>V2>V1, ka piki haere te whakamatao o te austenite, ā, ka iti haere te nui o te ferrite kua whakapūmautia, i te mea ka piki haere te nui o te pearlite, ā, ka angiangi te hanganga. I tēnei wā, he iti noa te nui o te ferrite kua whakapūmautia e horahia ana ki te rohe o te kōhatu.
8. Nō reira, ko te hanganga o v1 he ferrite+pearlite; ko te hanganga o v2 he ferrite+sorbite; ko te hanganga moroiti o v3 he ferrite+troostite.
9. Ina tae te tere whakamatao ki te v4, ka puta he iti noa te ferrite whatunga me te troostite (i ētahi wā ka kitea he iti noa te bainite), ā, ka hurihia te austenite hei martensite me te troostite; ina nui ake te tere whakamatao v5 i te tere whakamatao matua, ka hurihia katoatia te maitai hei martensite.
10. He rite te panonitanga o te maitai hypereutectoid ki te maitai hypoeutectoid, engari ko te rerekētanga ko te ferrite ka mimiti tuatahi ki te maitai hypoeutectoid, ā, ko te cementite ka mimiti tuatahi ki te maitai hypoeutectoid.
Wā tuku: Hakihea-14-2022
