Ngā wāhanga mīhini ahuwhenua: He mata parau maitai 65Mn kua tukatukahia ki te wera, ātete ki te mau, mō ngā parau hurihuri.
He taputapu matua te mata parau whenua mō ngā mahi ahuwhenua o ēnei rā. He mea whakamahi ngā tarakihana hei whakamahi tahi me ngā mīhini parau whenua hurihuri, ngā mīhini parau whenua, me ngā mīhini rui kore-rau. He mea hanga motuhake tēnei hua mō ngā taiao oneone pakari, ā, he wāhanga matua mō te whakawātea whenua, te tango i ngā kakau witi, te tango taru, te tango i ngā kakau witi, me te wetewete i te oneone. Mā tōna hanganga pakari ka tapahia te oneone mārō, ka tapahia ngā pakiaka o raro whenua, ka hangaia he taiao moenga purapura ma, wātea hoki mō te rui i muri mai.
Ko tēnei raupapa maripi whakaora whenua e wehea ana kia rua ngā āhua hanganga: momo-C me momo-L. He mea hanga ngātahi ēnei e rua mā te whakamahi i te tukanga hanga, kia mātotoru ai te konganuku, kia kore ai he kōhao onepu, ā, he tino kaha te ātete ki te pānga me te pakari. E rua ngā wāhanga o te tinana maripi: te kakau me te pane o te mata. He kōhao whakapiri kua oti te whakarite kia tika te tāutanga me te kakau o te mata; kei roto i te pane o te mata he mata tapahi whakarara me te mata tapahi taha, ā, kua whakakaha ruatia ngā taha, kua orohia, kia koi ai, kia ātete ai hoki ki te kakahu.
Hei ārai i te waku oneone kaha me ngā pānga toka, he mea hanga te hua mai i ngā maitai puna koranu kaha-teitei pērā i te 60Si2Mn, 60Si2MnA, me te 28MnSiB. Mā ngā tukanga maimoatanga wera matatau ka taea te whakahaere i te pakeketanga whānui o te mata i waenga i te HRC 42 me te 48. Ehara i te mea ka whakamanahia he āhuatanga whakakoi-ake pai anake (ka pupuri i te mata koi i te wā e whakamahia ana) engari ka whakarite hoki i te pakari o te tuara o te mata kia kore ai e whati i te wā e whakamahia ana.
He hoahoa piko āhua-pewa kua whakapaitia te tinana o te mata (he piko pewa tata ki te 120°), e whakaiti nui ana i te ātete i te wā e tapahi ana i te oneone, e whakaiti ana i te whakapaunga hiko o te tarakihana, ā, e penapena ana hoki i te pūngao. I te wā kotahi, mā te teitei o te mata tapahi taha kua whakapaitia ka whakarite kia pumau te hohonu o te parau ahakoa kua pakaru te mata, ka roa ake te huringa whakakapinga.
Ehara i te mea he pai anake tēnei hua mō te whakaora whenua pāmu me te tango taru, engari he tino pai hoki te mahi ki te tango i ngā kakau witi, te wawahi i ngā kakau witi, te tango i ngā kakau witi, me te whakatō purapura. Ina whakamahia ngātahi me te mata kore-whakatō, ka pakaru pai te kakau witi me te kakau witi o te mata, ka taea ai te whakahoki mai i te kakau witi ki te mara, ka whakanui ake hoki i te nui o ngā mea matū o te oneone.
