Mīhini Pāmu Te Pū o te Parau/Te Kaiwhakatipu Kai/Te Koro Whakatipu Kai/Te Koro Whakatipu Āhua-Pere
Ko ngā wāhanga āwhina o ngā mīhini ahuwhenua, pērā i ngā parau me ngā koko, he mea hanga mai i te maitai kaha, ā, he ātete ki te pakaru. Kua whakamahanahia te mata tapahi kia koi, kia pakari hoki, ā, he iti te ātete ki te uru ki te oneone. He pai mō ngā mahi parau hohonu i raro i ngā āhuatanga oneone rerekē, ka whakapai ake i te whai huatanga o te pakaru me te huri o te oneone. Ko tōna hoahoa poka tāutanga paerewa he hototahi ki ngā tauira parau matua, ā, he ngāwari ki te whakakapi. He ātete ki te pānga me te piko, ka taea te whakaroa i te roa o te ora o ngā wāhanga ahuwhenua, ā, he kōwhiringa pai mō ngā mahi ahuwhenua whai hua.
He mea hanga te hua mai i ngā rauemi koranu kounga teitei e rua, arā, te maitai manganese 65Mn me te maitai boron 30MnB, i hangaia mā te hanga i te hanganga pāmahana-teitei. He matotoru te hanganga o te rauemi, ā, kāore he hapa whakarewa pērā i ngā pūwero me ngā kōhao onepu. Mā te whakamahi i te tukanga maimoatanga wera tinei isothermal, ka eke te pakeke o te pito koko ki te 48-52HRC, ā, ka noho tonu te pakari o te matrix ki runga ake i te 35-40J/cm², ka tutuki ai te āhua mahi tino pai o te "pakeke o waho me te pakari o roto". Kua pāngia te mata tapahi e te maimoatanga whakapakari ā-rohe auau-teitei, me te pakeke neke atu i te 55HRC me te whakapai ake i te ātete kakahu.
He āhua piko te mata o te koko parau, ā, ka tika te tatau i te koki whakaurunga (ka taea te whakarerekē mai i te 22° ki te 28°), ka whakaiti i te ātete kukume mā te 15% -20%. Ka honoa te pito o te koko me te pakitara koko i roto i te whakawhiti hikoi hei whakakore i ngā pūwāhi kukū ahotea. He rite tonu ki ngā kōhao whakatika ārai wetewete pūrua, ka whakamahia tahi me ngā nati raka-ake hei whakarite kia roa te mahi me te kore e wetewete. Ko ētahi tauira he atanga pito koko ka taea te whakakapi, ā, ko ngā wāhanga o mua anake me whakakapi i muri i te tawhito o te pito koko, ka whakaiti i ngā utu tiaki.
Te ātete ki te kakahu: E 2-3 ngā wā roa ake te roa o te ora ratonga i ngā koko whakarewa noa, ā, ka taea te mahi tonu mō te 800-1200 eka i raro i ngā āhuatanga paru noa.
Ātete pānga: Ina tūtaki ki ngā arai pēnei i ngā toka me ngā pakiaka rākau, ka taea e te anga pakari te whakaruruhau, ā, kāore e ngawari te pakaru.
Te whakakoi-ā-ia anō: Mā te hanganga hiato maha-paparanga ahurei ka koi tonu te mata i te wā e mau ana, e haehae ana rānei
Ārai i te tango oneone: Ka orohia te mata hei whakanui ake i te tere tango paru mā te 30%, kia pai ai mō ngā mahi oneone taumaha.
