Mata Parao Kōpae Ahuwhenua Tino Pakari | Ngā Wāhanga Parao Tarakihana Ātete-Kakahu | Ngā Taputapu Parao Awaawa Pāmu mō te Ngaki
Hei wāhanga matua ngoikore o ngā mīhini ahuwhenua, ka mahi tika ngā parau me ngā koko i ngā mahi matua o te tapahi, te kuru, me te huri i te oneone, ā, ka pā tika te kounga ki te pānga ahuwhenua me te whai huatanga o te mahi. He mea hanga motuhake tēnei hua mō ngā momo parau, ngā parau hurihuri, me ngā parau parau hohonu, he pai mō ngā momo āhuatanga ahuwhenua pēnei i ngā mara maroke, ngā mara raihi, me te whenua koraha.
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 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.
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.
