Ngā hapa noa i roto iTe Whakarewatanga Taiaho Konumohe
Ahakoa he whakarewa aunoa i te laser, he whakarewa rāneiwhakarewa ranu laser-arce whakamahia ana mō ngā koranu konumohe, he maha ngā take hangarau noa, arā, ka puta pea he hapa mena he mea whakarewa ngā tawhā tukanga me ngā tikanga whakarewa.kāore i te tika. Ko teKo ngā hapa o ngā hononga konumohe koranu e rua ngā momo matua: te porosity whakarewa me te kapiti wera whakarewa. Haunga te porosity me ngā kapiti wera, kei roto anō hoki ngā hapa pēnei i te tapahi raro me te hanganga ngoikore o te taha muri i roto i te whakarewa laser o ngā koranu konumohe. Ki te whakatauritea ki te porosity whakarewa, kāore i te teitei te tūponotanga o ngā kapiti whakarewa (e kitea ana e te kanohi tahanga, i raro rānei i te whakanui iti). Heoi, nā te mea he morearea ake ngā kapiti, e kī ana a JIS Z 3105 ina kitea he kapiti i roto i te whakarewa, me whakatau te whakarewa hei Akomanga IV. Ko te tapahi raro, te hanganga ngoikore o te taha muri me ētahi atu hapa he hapa nui i puta mai i te whakahaere tere hē, i ngā tawhā tukanga kore taurite rānei. Ko ēnei hapa ka puta i te wāhanga o te tūhuratanga tukanga me te whakatikatika, ā, he onge te puta i roto i ngā mahi whakaputa tūturu. Nō reira, ko te porosity he momo hapa e kino ake ana i roto i te whakarewa laser o ngā koranu konumohe me te mahi ki ngā hanganga whakarewa, ā, he uaua ki te whakakore i te nuinga.
1. Te Pūngao
Ko te porosity te hapa nui rawa atu me te hapa nui o te rōrahi i roto i tete whakarewatanga laser o ngā koranu konumohe, me ngā rahi mai i ngā rau maikorona ki ngā mirimita. Kāore anō kia tino mārama te tikanga hanga. Ehara i te mea ka ngoikore noa te wāhanga mahi whai hua o te whakarewa i te porousity, engari ka puta hoki te kukū o te ahotea, ka whakaiti i te kaha hihiri me te mahi ngenge o te hononga whakarewa.
Ina rewa te koranu konumohe i roto i te taiao kei roto te hauwai, ka eke te nui o te hauwai o roto ki te neke atu i te 0.69 ml/100g, engari i muri i te whakapakeketanga o te koranu, ko te wairewatanga o te hauwai i te taurite he 0.036 ml/100g te nui rawa. E whakaponohia ana i te nuinga o te wā i roto i te tukanga whakamatao o te whakarewa laser, ka heke tere te wairewatanga o te hauwai, ā, ko te maturuturunga o te hauwai tino mātotoru ka hanga i te porosity hauwai. Ko te mimiti o ngā huānga whakarewa iti-ira me te pēhanga-teitei o te kohu ka arahi pea ki te porosity, e kiia nei ko te porosity whakarewa. Hei tāpiri, ko te whakararuraru o te hihi laser me te kore pumau o te kōhao kī ka taea hoki te hanga porosity, engari he āhua koretake taua porosity, ā, ka taea te kī ko te porosity i puta mai i te tukanga. Nā te kaha matū teitei o ngā koranu konumohe, ka ngawari te hanga i te kiriata waikura ki runga i te mata. I te wā whakarewa, ko te wai karaihe me te wai whakakotahi i pakaru mai i te kiriata waikura i runga i te mata koranu konumohe, me te makuku i te rangi me te hau tiaki, ka pakaru tika hei hanga hauwai i te rohe pāmahana teitei i raro i te mahi a te laser. Tērā pea ka puta ngā hau hauwai i te wā e whakamatao ana, e whakapakeke ana hoki i te puna rewa hei hanga mirumiru, ka puta rānei he mirumiru tika ki runga i te kiriata waikura kāore anō kia rewa. Nā te iti o te taumaha motuhake o ngā koranu konumohe, he puhoi te tere piki o ngā mirumiru i roto i te puna rewa. Hei tāpiri, he kaha te kawe wera o ngā koranu konumohe, ā, he tino tere te tere whakamatao me te whakapakeketanga o te puna rewa. Kāore e taea e ētahi mirumiru te mawhiti i te wā tika, ā, ka noho tonu ki roto i te whakarewa, ka hangaia he porosity whakarewa. Kua whakaatuhia e ngā rangahau ko te hau matua i roto i te porosity o ngā whakarewa konumohe ko te hauwai, nō reira ko te porosity i roto i ngā whakarewa konumohe ka kiia i ētahi wā ko te porosity hauwai. Ina tirohia te whati o te porosity i raro i te karu hiko matawai, ko te porosity te nuinga o te wā he āhua porowhita me ngā pito dendrite kua whakaritea piri o ngā tioata dendritic, ā, he maeneene, he ma, he kore hoki he tohu waikura o te pakitara o roto. Ko te noho o te porosity ehara i te mea ka whakaiti noa i te kiato o te whakarewa me te kaha kawe o te hononga, engari ka whakaitihia hoki te kaha me te kirihou o te hononga ki ngā taumata rerekē.
2. Ngā Kapiti Wera
Ka puta ngā kapiti wera (tae atu ki ngā kapiti totoka me ngā kapiti wai) i te wā o te tukanga totoka o te konganuku puna rewa, ā, ko tētahi o ngā momo hapa noa i roto i te whakarewa laser o ngā koranu konumohe. Ko te āhuatanga tino kitea o te āhua pakaru o ngā kapiti totoka ko te mata pakaru he mea hanga mai i tētahi wāhi nui o te kohatu kirikiri kirikiri maeneene engari kāore i te ōrite, he hanganga rīwai rānei, ā, he maha ngā wā ka mau tonu te mata i ngā eutectics iti-ira-rewa, ngā kopa kiriata wai rānei, me ngā tohu o te pakaru pakarukaru o ngā dendrite. He rite te āhua pakaru o ngā kapiti wai ki te kapiti totoka, engari he āhuatanga ōna o te pakaru intergranular pāmahana-teitei, o te pakaru totoka rānei. I roto i te pakaru ngenge o ngā hononga whakarewa-whakakotahi i raro i te kawenga ngenge, he mea noa hoki ngā pūtake kapiti ngenge i puta mai i aua kapiti wera. Ko ngā take o ngā kapiti wera i roto i te whakarewa laser o ngā koranu konumohe e pā ana ki ō rātou ake āhuatanga me ngā tukanga whakarewa. He nui te tere whakaheke o ngā koranu konumohe i te wā o te totoka (tae atu ki te 5%), ka hua ake he ahotea whakarewa nui me te whakarerekētanga; Hei tāpiritanga, ka hangaia ngā hanganga eutectic iti-ira-rewa i te taha o ngā rohe o te witi i te wā e totoka ana te konganuku whakarewa, ka ngoikore te kaha here o ngā rohe o te witi, ā, ka puta he kapiti wera i raro i te mahi a te ahotea kume. Hei tāpiritanga, ka taea te whakarāpopoto i ngā āhua kapiti i roto i te whakarewa laser o ngā koranu konumohe ki ngā kāwai e whai ake nei: ngā kapiti pokapū whakarewa; ngā kapiti raina hanumi whakarewa; ngā kapiti waenga-pūmua i roto i ngā whakarewa; ngā kapiti waimeha rohe e pāngia ana e te wera; ngā kapiti i puta mai i ngā kiriata waikura; me ngā kapiti moroiti waenga-pūmua.
Hei tāpiritanga, ko te ngoikore o te tiaki i te wā e whakarewa ana ka pā te tauhohenga o te konganuku whakarewa ki ngā hau i te rangi, ā, ko ngā whakaurunga kua hangaia he pūtake pakaru pea. He nui te awe o te momo me te nui o ngā huānga whakarewa ki te āhua pakaru wera i te wā e whakarewa ana i te koranu konumohe. I te nuinga o te wā, he pai te kaha o te whakarewa o ngā koranu konumohe raupapa Al-Si me Al-Mn, ā, kāore e ngāwari ki te whakaputa kapiti wera; ko ngā koranu konumohe raupapa Al-Mg, Al-Cu me Al-Zn he āhua pakaru wera teitei. Ka taea te whakaiti i te āhua pakaru wera mā te whakarerekē i ngā tawhā tukanga whakarewa hei whakahaere i ngā tere whakamahana me te whakamatao. I te nuinga o te wā, he pai ake te āhua pakaru wera o te whakarewa ranu laser-arc i te whakarewa waea whakakī laser, ā, he pai ake te āhua pakaru wera o te whakarewa waea whakakī laser i te whakarewa aunoa laser.
3. Tapahi raro me te tahunga-ā-roto
He iti te kaha o te ionization o ngā koranu konumohe, ā, he ngāwari te werawera me te whānui o te plasma i puta mai i te whakaahua i te wā e whakarewa ana, ka hua ake he tukanga whakarewa kore pumau. Hei tāpiri, he pai te rere o ngā koranu konumohe wai, ā, he iti te taumahatanga o te mata. Hei whakapai ake i te urunga, he maha ngā wā ka hiahiatia he tere rere hau tiaki nui ake me te mana whakaputa laser, ka whakaiti i te pumau o te tukanga whakarewa, ka puta ai te puna rewa ki te huri tere i raro i te pēhanga, ā, ka tere te arahi ki ngā hapa pēnei i te tapahi me te wera. Ka taea te whakapai ake i te kaha o te hanga o muri o ngā pereti koranu konumohe i whakarewahia e te laser mā te tāuta i tētahi pereti parahi whakamatao-wai ki muri o te whakarewa.
4. Whakaurunga o te Para
Ko tētahi atu momo hapa e kitea pinepine ana i roto i te whakarewa tinana waka ko te whakaurunga o te para whakarewa. Kua whakaatuhia e ngā rangahau ko te whakaurunga o te para ka ahu mai i ngā waikura i runga i te mata o ngā whakarewa me ngā waea whakarewa, tae atu ki ngā tukanga kore pumau i roto i te rohe o ngā rauemi koranu konumohe. Nō reira, me whakapakari e ngā kaihanga rauemi koranu konumohe te auahatanga hangarau me te whakapai ake i ngā tukanga whakarewa hei whakaiti i te nui o ngā poke me te hauwai i roto i ngā rauemi mata, me te whakarei ake i te pumau o te kounga o ngā hua.
Wā tuku: Akuhata-05-2025
