Mata Harrow Kōpae
Ko ngā kōpae harrow kōpikopiko (e mōhiotia ana ko ngā kōpae harrow kōpikopiko, ko ngā kōpae harrow kōpikopiko rānei) he wāhanga matua o te kakahu i roto i ngā mīhini parau whenua ahuwhenua hou, e whakamahia ana i roto i ngā harrow kōpae nui, ngā mīhini parau whenua whakakotahi, me ngā mīhini rui tika. He hoahoa taha kōpikopiko ahurei tēnei hua me te hangarau maimoatanga wera matatau, e tutuki ai te pakaru oneone pai me te whakaiti i te ātete mahi. He taputapu tino nui, he mea tino pai hoki mō te parau whenua tiaki me te parau whenua pai.
Ka whakamahia e tēnei hua te maitai konupora-teitei 65Mn, te maitai boron kaha-teitei 30MnB rānei hei rauemi turanga, ā, he mea hanga ngātahi mā te tā i te pāmahana teitei. Hei whakarite i te ātete pai ki te kakahu me te ātete pānga, ka whakamahia e mātou he raina whakaputa maimoatanga wera hau e whakahaeretia ana e te aunoa hei mahi i te tineitanga isothermal me te maimoatanga waro mata, kia eke te pakeke o te mata o ngā mata rake ki te HRC 38-45, i te mea ka mau tonu te pakari o te uho. Ki te whakatauritea ki ngā mata rake noa, ka roa ake te ora o te kakahu neke atu i te 30%, ka ārai i te pakaru me te hurihuri o te mata ina whakamahia i roto i te oneone onepu.
He rerekē tēnei i ngā kōpae maeneene tuku iho, e 4-10 ngā koki koki nui, hohonu hoki o ngā mata rake piupiu kua tohatohahia kia ōrite. E toru ngā painga nui o tēnei āhuahanga:
Mana tapahi kaha: Ka whakaputa te mata tapahi ngaru i te kaha whati "rite ki te ira", ka tapahi ngāwari i ngā kakau me ngā taru, ka uru ki ngā paparanga mārō, kikī, ka whakatau pai i ngā raruraru "paheke" me te "uaua ki te uru" o ngā taputapu tapahi kōpae tuku iho ina whakamahia ana i roto i ngā oneone uku taumaha, i ngā mara rānei he nui te kakau witi.
Te whakaranu ōrite: I te wā e hurihuri ana, ka puta he kaha kaha ki te taha o te oneone e whiua ana e te taha ngaru, kia pai ai te whakaranu o te kakau witi me te oneone, kia kore ai e puta he "paparanga maroke," ā, kia māmā ake ai te horoi i ngā moenga purapura mō te rui i muri mai.
Horoi-ā-ia-anō me te ārai-aukati: Ka ārai te mata whakawhiti āhua-pewa ahurei i te piri o te oneone mākū, ka mau tonu te ngāwari o te nekeneke ahakoa i ngā wā ua.
Te parau i ngā mara maroke: Te tango i ngā kakau witi, te parau papaku, me te whakaranu i ngā kakau witi i muri i te hauhake i ngā hua pēnei i te kānga, te witi, me te pīni soya;
Te uku taumaha me ngā oneone kikī: Te wāwāhi i te parāoa parau hei whakapai ake i te hau me te uruhanga wai;
Te parau whenua nui: Hei wāhanga parau whenua tuatahi o tētahi mīhini parau whenua whakakotahi, e tutuki ai te mahi "kotahi-haerenga" tino whai hua.
Te Whakamahinga me te Tiaki: I te wā tāutanga, kia tino tutuki te tawhiti i waenga i ngā mata o te harrow tata ki ngā whakaritenga ahuwhenua, ā, whakamahia he pūtu whakamau kaha, motuhake. He mea pai kia tirohia tonutia te pakaru o ngā taha o te cutterhead. Ina neke atu i te 3mm te radius o te pakaru o te mata tapahi, whakakapia tonutia kia mau tonu ai te hohonu o te parau me te pānga pakaru oneone.
