I roto i te taiao uaua o ngā wheketere sima, ka whakawhirinaki ngā ararewa peere ehara i te mea ko ngā mekameka hononga porowhita pakari anake engari ko ngā hononga nui hoki e mahi ana hei hononga tino nui i waenga i te mekameka me ngā peere. Ko ēnei hononga, e rite ana ki ngā paerewa DIN 745 me te DIN 5699, ko ngā piriti miihini e whakawhiti ana i ngā kaha hiki mai i te mekameka ki ngā peere e mau ana i ngā rauemi whakakoi pērā i te clinker, te kōhatu, me te paraoa mata.
Kua roa ngā kaiārahi ahumahi pēnei i a RUD, CICSA, me Heko e tohunga ana ki ēnei wāhanga hangarau, e whakamahi ana i ngā tukanga whakarewa matatau me te maimoatanga wera hei whakaroa i te roa o te mahi i raro i ngā āhuatanga tino uaua.
Ngā Hoahoa me ngā Taupānga Paerewa
E rua ngā paerewa hononga matua e whakahaere ana i te umanga sima:
- Ngā mekameka DIN 745he tinana whakakoi momo-U me te pereti tawhiti me te huihuinga nati, i hangaia mō ngā ararewa mekameka matua whānui, kawenga nui. Ka hono tika ēnei hononga i ngā peere ki ngā miro mekameka.
- Ngā mekameka DIN 5699he papatahi te āhua me te āhua kiato, me ngā kakau miro roa ake e taea ai te whakanoho i ngā pereti tawhiti i waenga i te peere me te mekameka. He pai ake te haumaru mahi a tēnei hoahoa, ā, he pai ake te ātete ki te pakaru me te ngenge ki te whakataurite ki te DIN 745, e pai ai mō te tawhiti peere kikī me ngā ararewa PCD kua whakaitihia te whānui.
Kua hangaia ngā paerewa e rua kia pai te mahi tahi me ngā miro mekameka e rite ana ki te DIN 764 me te DIN 766.
Te Kōwhiringa Rauemi me te Tukanga Hanga
Kāore i rite ki te katimekameka hononga porowhita, ngā honongaHe hoahoa tuwhera me te pine whakawhiti ka taea te tango, ka hangaia he pūwāhi kukū ahotea ā-roto. Hei whakatikatika i tēnei, ka hangaia ngā hononga kounga teitei mā te hanga taka tika mā te whakamahi i ngā maitai koranu pai-kikokiko. Ko ngā rauemi noa ko te maitai 45# ka taea te whakamahana, ngā koranu Cr-Mo (chromium-molybdenum), me ngā maitai koranu Cr-Ni-Mo (chromium-nickel-molybdenum). Ko te tohu hononga e hiahiatia ana e whakatau ana i te kōwhiringa maitai koranu motuhake. Ka whakataurite te hanga taka i te rere o te witi ki te āhua o te hononga, ka whakanui ake i te ātete ngenge i raro i ngā kawenga kume me te pānga tonu e pā ana ki ngā mahi tipu sima.
Te Whakapakari Tino Pai me te Mana Kounga
Hei whakarite kia tutuki i ngā hononga te ātete ki te pakaru e rite ana ki ngā hononga porowhita kua whakakāhia ki te waro, ka whakamahia e ngā kaihanga matua o te ahumahi he maimoatanga whakapakeke ā-rohe motuhake ki ngā pūwāhi hononga e pā ana ki te mekameka. Ka taea ēnei te whakarōpū hei:
- Ngā hononga whakapakeke-taha / whakapakeke-ārahi: Kua whakapakeketia rawatia kia tae ki te kaha kume rauemi tata ki te 950–1100 N/mm², me te whakapakeketanga ārahi i ngā pūwāhi whakapā hononga ka tutuki ai te pakeketanga o te mata o te 600 HV1 (55HRC) neke atu rānei.
- Ngā hononga whakapakeke-kiri/whakapūkara: Mō ngā tono whakakoi tino kino, ka tukuna e ngā kaihanga pēnei i a Pewag he whakapūkara tāpiri, ka tutuki ai te pakeke o te mata o te 750 HV1, neke atu rānei i ngā wāhi pa hononga.
Ko ngā tawhā matua mō te whakahaere kounga kua tohua e ngā kaihanga nui ko te hohonutanga whakapakeke (≥0.1×d), te pakeketanga o te mata (iti rawa 600–750 HV1), me ngā kaha ārai me te pakaru e rite ana, e nui ake rānei i ērā o ngā mekameka nui rawa atu e taurite ana ki a rātou. Mā te whakamātautau pakari i te kounga o te mata me ngā tawhā maimoatanga wera ka whakarite kia rite te ātete ngenge puta noa i ngā puranga whakaputa katoa.
Ngā Wero Whakahaere me te Whakakapinga
Ahakoa he mea hanga ngā hononga, ā, he mea whakapakeke kia tata ki te kaha o ngā hononga porowhita, koinei tonu te wāhi ngoikore o te pūnaha nā te āhua tuwhera me ngā here miro. Ko te rohe whakapā hononga i waenga i te hononga me te hononga mekameka tētahi o ngā wāhi tino taumaha i roto i te pūnaha ararewa katoa, ka ngāwari te mau, te pakaru o te ngenge, me te wetekina o ngā nati i raro i te wiri tonu.
Ko ngā momo rahunga noa ko:
- Te kakahu o te mata: Te pakū i ngā pūwāhi hononga, ka whakaiti i te horahanga whakawhiti-wāhanga whai hua
- Te pakaru o te ngenge: Ko ngā ahotea huringa ka tīmata i ngā pakaru i ngā pūwāhi kukū ahotea, ka horapa haere i roto i te wā tae noa ki te pakaru
- Te wetewete o te here: Te wetewete o ngā nati i puta mai i te wiri, ka whakaitihia i te nuinga o te wā mā ngā nati raka-ake, mā ngā horoi puna rānei
Hei whakaiti i ēnei mōrearea, me whakau ngā hononga miro ki ngā pūnaha aukati tika, ā, me whakauru tika ngā pereti tawhiti. Ko te whakamahinga o ngā huihuinga raka-ake me te ātete ki ngā huringa wiri me te pāmahana tonu he āhuatanga hoahoa nui mō te roa o te ora ratonga.
E ai ki ngā wheako o te umanga, ahakoa he roa pea te mekameka i roto i ngā rau mano tāne o te rahi o te rauemi e haria ana, me whakakapi wawe tonu ngā āpitihanga peere me ngā hononga. E whakaatu ana ētahi raraunga parae me whakakapi pea ngā āpitihanga peere i muri i te 400,000 tāne o ngā rauemi e whakahaerea ana, he whai wāhitanga nui tēnei mō ngā tipu ki te whakamahere i ngā mahi tiaki ārai me te whakaiti i te tūponotanga o te wā kore mahi i whakaritea.
Ngā hononga mekameka hononga porowhitahe āhuatanga hangarau - he hoahoa tuwhera engari me tu atu ki te waku kaha, te kawenga hihiri, me ngā taiao whakakoi pērā i ngā hononga kati e hono ana. Mā te hanga tika, te whiriwhiri rauemi kua arotauhia, me te whakapakeketanga kēhi whiriwhiri (carburizing) i ngā pūwāhi hononga, ka hangaia e ngā kaihanga matua pērā i a RUD, CICSA, me Heko ngā hononga e whakarato ana i te mahi pono i raro i ngā tono pānga nui, mahi tonu o ngā ararewa peere o te tipu sima. Ko te tirotiro auau mō te kakahu i ngā rohe whakapā hononga, te manatoko i te haumarutanga o te whakapiri, me te whakakapinga wā i runga i te taumaha e haria ana he mahi nui hei ārai i te pakaru kino me te whakanui ake i te wā mahi o te pūnaha.
Te wā tuku: Mei-24-2026
