Ā Mātou Hua
Mowhiti Huri mō te Mira
Ngā painga hangarau
He mea nui te ātete ki te kakahu o ngā taputapu mira. I te nuinga o te wā, he tokomaha te hunga e whakaaro ana ko te pakeke o te hua, ko te ngāwari ki te mau, nō reira, he maha ngā whare hanga mira e pānui ana kei roto i ā rātou whakarewanga he chromium, e 30% te nui, ā, ko te pakeke HRC e 63-65. Heoi, ko te horapa o te tohatoha, ko te tūponotanga ka puta he kōhao iti me he kapiti iti i te hononga i waenga i te matrix me ngā carbides, ā, ka nui ake te tūponotanga o te whati. Ā, ko te pakeke o te mea, ko te uaua ki te tapahi. Nō reira, ehara i te mea ngāwari te hanga mowhiti huri ātete ki te kakahu me te pakari. Ko te mowhiti huri te nuinga o te wā e whakamahi ana i ngā momo rauemi e rua e whai ake nei.
65Mn (65 manganese): ka taea e tēnei rauemi te whakapai ake i te pakari o te mowhiti huri. He āhuatanga tōna o te pakeketanga teitei, te ātete pai ki te kakahu me te ātete pai ki te aukumetanga, e whakamahia ana i te nuinga o te wā i roto i te mara tukatuka paura e hiahia ana te hua ki te tango i te rino. Ka taea te whakapai ake i te ātete kakahu me te pakari mā te whakataurite me te whakamahana i te maimoatanga wera.
Mn13 (13 konupora): kua pai ake te pakari o te mowhiti huri i hangaia ki te Mn13 ki te 65Mn. Ka rongoatia ngā whakarewa o tēnei hua ki te pakari wai i muri i te ringihanga, he kaha ake te kaha kume, te pakeke, te kirihou me ngā āhuatanga kore-aukume o ngā whakarewa i muri i te whakapakeketanga wai, ka roa ake te pakari o te mowhiti huri. Ina pāngia e te pānga kino me te pēhanga kaha i te wā e oma ana, ka whakapakeketia te mata, ka hanga he martensite, ā, ka hanga he paparanga mata tino ātete ki te kakahu, ka mau tonu te pakari o te paparanga o roto, ahakoa ka kakahuria ki te mata tino angiangi, ka taea tonu e te roera huri te tu atu i ngā kawenga ru nui ake.
