Ko te pereti maitai S460N/Z35 te pereti kaha teitei paerewa o Ūropi, te kōtaha maitai S460N, S460NL, S460N-Z35: Ko te S460N, S460NL, S460N-Z35 he maitai maitai angiangi ka taea te huri wera i raro i te āhua huri noa/noa, ko te matotoru o te pereti maitai S460 kāore e neke ake i te 200mm.
S275 mō te paerewa whakatinanatanga maitai hanganga kore-koranu: EN10025-3, tau: 1.8901 Ko te ingoa o te maitai he mea hanga ki ēnei wāhanga: Tohu reta S: te matotoru e pā ana ki te maitai hanganga he iti iho i te 16mm te uara kaha hua: uara hua iti rawa Ngā tikanga tuku: E tohu ana a N ko te pānga i te pāmahana kāore i te iti iho i te -50 nekehanga ka tohuhia e te reta matua L.
S460N, S460NL, S460N-Z35 Ngā awhe, te āhua, te taumaha me te rerekētanga e whakaaetia ana.
Me tutuki te rahi, te āhua me te rerekētanga e whakaaetia ana o te pereti maitai ki ngā whakaritenga o te EN10025-1 o te tau 2004.
Tūnga tuku mō ngā pereti maitai mō ngā S460N, S460NL, S460N-Z35 Ko te tikanga ka tukuna ngā pereti maitai i roto i te āhua noa, mā te hurihuri noa rānei i raro i ngā āhuatanga ōrite.
Te Hanganga Matū o te maitai S460N, S460NL, S460N-Z35 Me tutuki te hanganga matū (tātari rewa) ki te ripanga (%) e whai ake nei.
Ngā whakaritenga hanganga matū mō S460N, S460NL, S460N-Z35: Nb+Ti+V≤0.26; Cr+Mo≤0.38 S460N Tātari Rewa Waro Taurite (CEV).
S460N, S460NL, S460N-Z35 Ngā Āhuatanga Ā-ringa Me tutuki i ngā āhuatanga ā-ringa me ngā āhuatanga tukatuka o S460N, S460NL, S460N-Z35 ngā whakaritenga o te ripanga e whai ake nei: Ngā Āhuatanga Ā-ringa o S460N (e tika ana mō te whakawhiti).
Te mana pānga o S460N, S460NL, S460N-Z35 i te āhua noa.
I muri i te whakamahana me te whakataurite, ka taea e te maitai waro te hanga i te hanganga taurite, tata rānei ki te taurite, ā, i muri i te tinei, ka taea e ia te hanga i te hanganga kore-taurite. Nō reira, i te wā e ako ana i te hanganga i muri i te maimoatanga wera, me tirotiro ehara i te mea ko te tūtohi āhua waro rino anake engari ko te pihi whakawhiti isothermal (pihi C) o te maitai.
Ka taea e te tūtohi āhua waro rino te whakaatu i te tukanga whakatioata o te koranu i te whakamatao puhoi, te hanganga i te pāmahana rūma me te nui o ngā āhua, ā, ka taea e te pihi C te whakaatu i te hanganga o te maitai me tētahi hanganga i raro i ngā āhuatanga whakamatao rerekē. He pai te pihi C mō ngā āhuatanga whakamatao isothermal; ka taea te whakamahi i te pihi CCT (pihi whakamatao tonu austenitic) mō ngā āhuatanga whakamatao tonu. Ki tētahi whānuitanga, ka taea hoki te whakamahi i te pihi C hei whakatau tata i te huringa hanganga moroiti i te wā whakamatao tonu.
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.
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.
Ina tae te tere whakamatao ki te v4, ka puta he iti o te ferrite whatunga me te troostite (i ētahi wā ka kitea he iti o 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.
He rite te whakawhiti o te maitai hypereutectoid ki te maitai hypoeutectoid, ko te rerekētanga ka mimiti tuatahi te ferrite ki te maitai hypoeutectoid, ā, ka mimiti tuatahi te cementite ki te maitai hypoeutectoid.
Wā tuku: Hakihea-14-2022
