Ngā Wāhanga Mīhini Ahuwhenua Kounga Teitei Papa Parai (Tau Wāhanga 073300)
Ko te hea parau 073300 te wāhanga matua o te pūnaha parau papa pokepoke, e mahi ana ki te huri me te wawahi i ngā poraka oneone. Hei tētahi o ngā wāhanga ngoikore e pā pinepine ana, e pāngia ana hoki, he mea hanga tēnei hea parau kia rite tonu ki ngā āhuatanga me ngā paerewa piko o te wheketere taketake, ko te whāinga kia pai ai te huri oneone, kia pumau hoki mō te whakatipu ahuwhenua o ēnei rā.
Mā te hoahoa mata piko motuhake, ka mahi tahi tēnei hua me te hea parau hei tapahi, hei hiki, hei wawahi, hei huri hoki i te oneone. Ko tōna hanganga mata piko porowhita, porowhita-haurua rānei, ka whakaiti i te piri o te oneone me te waku ki te mata hea parau, kia maeneene ai te hurihanga o ngā poraka oneone 180-tohu i te wā e tere ana te mahi. Ehara i te mea ka kapi katoatia e tēnei tukanga ngā taru mata, ngā kakau witi, me ngā pepeke i raro i te paparanga oneone, ka whakapai ake i te momona o te oneone, engari ka whakaiti nui hoki i te ātete ki te kukume o te tarakihana, ā, ka taea te penapena pūngao me te whakaiti i te whakamahinga.
He mea hanga te parau 073300 ki te maitai boron kaha-teitei, ki te maitai manganese 65Mn rānei hei rauemi turanga, ā, he mea hanga kia kotahi te wahi mā te tā i tētahi pokepokea nui. He tino kaha te kaha me te pakari o tēnei rauemi, ā, ka taea te tu atu i ngā pānga kino mai i ngā mea pakeke pērā i ngā kōhatu me ngā pakiaka rākau, ka ārai i te whati, i te whakarerekētanga kirihou rānei.
Mō te maimoatanga wera, ka tukuna te mata o te hua ki te maimoatanga tinei whānui, ka tutuki te tohatoha pakeke ōrite o te 38-42 HRC. Ki te whakatauritea ki te maitai noa, ka pai ake tōna ātete kakahu mā te neke atu i te 3 ngā wā, ka roa ake te huringa whakakapinga me te whakaiti i ngā utu tiaki a ngā kaiwhakamahi. Kua tāpirihia e ētahi tauira papai he tukanga whakarewa paparanga ātete kakahu ki te mata, ka whakarei ake i te ātete waikura me te ātete kakahu o ngā taha.
He tino tika te mīhini CNC mō ngā kōhao whakairi me te mokowā pūtu o tēnei parau, kia tika ai te tūnga me te hototahi ki ngā parau papa pokepoke me ngā tinana parau hurihuri (pērā i a Reckon, Grenfell, me Kuhn). Mā tōna hoahoa ngāwari ka pai te rere o te oneone, kia pai ai te tango oneone ahakoa i roto i ngā oneone makuku, paru, kia kore ai e "piri te oneone" me te whakarite kia rite te hohonu o te parau me te papa o raro.
He whānui te whakamahinga o tēnei taputapu mō te parau hohonu me te parau papaku i ngā mara maroke. Ahakoa he whakahoki i te kakau witi ki te mara i muri i te hauhake i ngā hua witi pēnei i te kānga me te witi, he wetewete rānei i te oneone i mua i te whakatō i ngā hua hokohoko, ka whakarite te parau 073300 i te kounga parau paerewa teitei. E taunakihia ana kia tirohia ngātahitia me te parau, ngā pereti taha o te parau, me ētahi atu wāhanga i te wā whakakapinga hei whakahoki mai i te mahi whānui o te tinana parau.
