◦ Paerewa whakatinanatanga: GB/T1222-2007.
◦ Kiato: 7.85 karamu/cm3.
• Te hanganga matū
◦ Waro (C): 0.62%~0.70%, e whakarato ana i te kaha taketake me te pakari.
◦ Manganese (Mn): 0.90%~1.20%, e whakapai ake ana i te pakari me te pakari.
◦ Hiraka (Si): 0.17%~0.37%, e whakapai ake ana i te mahi tukatuka me te whakamahine i ngā witi.
◦ Whero (P): ≤0.035%, whanariki (S) ≤0.035%, me te tino whakahaere i te nui o te paru.
◦ Chromium (Cr): ≤0.25%, nickel (Ni) ≤0.30%, parahi (Cu) ≤0.25%, ngā huānga whakakoi iti, hei āwhina i te whakapai ake i te mahi.
• Ngā āhuatanga miihini
◦ Kaha nui: Ko te kaha kume σb he 825MPa~925MPa, ā, ko ētahi raraunga kei runga ake i te 980MPa. He tino pai tōna kaha kawe, ā, he pai mō ngā āhuatanga taumahatanga teitei.
◦ He pai te ngāwari: He teitei te rohe ngāwari, ka taea te tu atu i te whakarerekētanga ngāwari nui me te kore e whakarerekētanga pumau, ā, ka taea te penapena me te tuku pūngao tika.
◦ Te pakeketanga teitei: I muri i te maimoatanga wera, ka eke ki te HRC50, neke atu rānei, me te ātete nui ki te kakahu, he pai mō ngā āhuatanga kakahu.
◦ Pakari pai: Ina pāngia e ngā kawenga pānga, ka taea te mimiti i tētahi nui o te pūngao me te kore e pakarukaru, ka whakapai ake i te pono me te roa o te mahi i raro i ngā āhuatanga uaua.
• Ngā Āhuatanga
◦ Te pakeketanga teitei: Ka whakapai ake te konupūmā i te pakeketanga, he pai mō te hanga puna me ngā wāhanga nunui neke atu i te 20mm te whānui.
◦ He iti te auau o te tango waro i te mata: He pumau te kounga o te mata i te wā e whakamahanahia ana, ka whakaiti i te tūponotanga o te pakaru wawe.
◦ Te aro ki te wera rawa me te pakarukaru o te whakamahana: Me tino whakahaere te pāmahana tinei, me te karo i te awhe pāmahana pakarukaru i te wā e whakamahana ana.
◦ He pai te mahi tukatuka: ka taea te hanga me te whakarewa, he pai mō te hanga i ngā wāhanga āhua uaua, engari he iti te kirihou o te hurihanga makariri.
• Ngā whakaritenga mō te maimoatanga wera
◦ Te tinei: Te pāmahana tinei 830℃±20℃, te whakamatao hinu.
◦ Te whakamahana: Te pāmahana whakamahana 540℃±50℃, ±30℃ ina hiahiatia he hiahia motuhake.
◦ Te Whakaōrite: Te pāmahana 810±10℃, te whakamatao hau.
• Ngā wāhi tono
◦ Te hanga puna: pērā i ngā puna rau motuka, ngā puna ngongo ru, ngā puna takirere, ngā wiwi mamau, me ētahi atu.
◦ Ngā wāhanga mīhini: ka taea te whakamahi hei hanga i ngā wāhanga kawenga nui, waku nui pērā i ngā taputapu, ngā whāriki, me ngā piston.
◦ Ngā taputapu tapahi me ngā mati tā: mā te whakamahi i tōna pakeketanga me te ātete ki te kakahu, ka taea te whakamahi hei hanga taputapu tapahi, mati tā, me ētahi atu.
◦ Ngā whare me ngā piriti: ka taea te whakamahi hei hanga i ngā wāhanga hei whakarei ake i te kaha o ngā hanganga, pērā i ngā whāriki piriti, ngā tautoko whare, me ētahi atu.
Te wā tuku: Hurae-18-2025