Ko te hangarau hanga tāpiri taiaho (AM), me ōna painga o te tika o te hanga, te ngāwari kaha, me te taumata teitei o te aunoatanga, e whakamahia whānuitia ana i roto i te hanga o ngā wāhanga matua i roto i ngā mara pēnei i te motuka, te hauora, te rererangi, me ētahi atu (pēnei i ngā pūwero wahie rōkete, ngā whīra antenna amiorangi, ngā whakaurunga tangata, me ētahi atu). Ka taea e tēnei hangarau te whakapai ake i te mahi whakakotahi o ngā wāhanga tānga mā te hanga whakauru i te hanganga rauemi me te mahi. I tēnei wā, ko te hangarau hanga tāpiri taiaho e whakamahi ana i te hihi Gaussian arotahi me te tohatoha pūngao pokapū teitei me te taha iti. Heoi, he maha ngā wā ka puta he pikinga wera teitei i roto i te rewa, ka arahi ki te hanganga o ngā pore me ngā witi matotoru. Ko te hangarau hanga hihi he tikanga hou hei whakaoti i tēnei raruraru, e whakapai ake ana i te pai me te kounga o te tānga mā te whakarerekē i te tohatoha o te pūngao hihi taiaho.
Ki te whakatauritea ki te tangohanga tuku iho me te hanga rite, he pai ngā painga o te hangarau hanga tāpiri whakarewa pērā i te wā huringa hanga poto, te tika tukatuka teitei, te tere whakamahinga rauemi teitei, me te pai o te mahi whānui o ngā wāhanga. Nō reira, he whānuitia te whakamahinga o te hangarau hanga tāpiri whakarewa i roto i ngā ahumahi pērā i te rererangi, ngā patu me ngā taputapu, te mana karihi, ngā rongoā koiora, me ngā motuka. I runga i te kaupapa o te whakarārangi motuhake, ka whakamahia e te hanga tāpiri whakarewa he pūtake pūngao (pērā i te laser, te pewa, te hihi irahiko rānei) hei whakarewa i te paura, i te waea rānei, kātahi ka whakarārangihia kia paparangahia kia hangaia te wāhanga ūnga. He nui ngā painga o tēnei hangarau ki te whakaputa i ngā puranga iti, ngā hanganga uaua, ngā wāhanga whaiaro rānei. Ko ngā rauemi kāore e taea te tukatuka, e uaua rānei ki te whakamahi i ngā tikanga tuku iho, he pai hoki mō te whakarite mā te whakamahi i ngā tikanga hanga tāpiri. Nā ngā painga o runga ake nei, kua aro nui ngā tohunga ki te hangarau hanga tāpiri i te motu me te ao. I ngā tekau tau kua pahure ake nei, kua tere te ahunga whakamua o te hangarau hanga tāpiri. Nā te aunoatanga me te ngāwari o ngā taputapu hanga tāpiri laser, me ngā painga whānui o te kiato pūngao laser teitei me te tika tukatuka teitei, ko te hangarau hanga tāpiri laser te mea tere rawa te whanaketanga i roto i ngā hangarau hanga tāpiri whakarewa e toru kua whakahuatia ake nei.
Ka taea te wehewehe anō i te hangarau hanga tāpiri whakarewa reihi ki te LPBF me te DED. E whakaatu ana te Pikitia 1 i tētahi hoahoa kauwhata noa o ngā tukanga LPBF me te DED. Ka taea e te tukanga LPBF, e mōhiotia ana ko te Selective Laser Melting (SLM), te hanga i ngā wāhanga whakarewa matatini mā te matawai i ngā hihi reihi kaha-teitei i te ara pumau i runga i te mata o te moenga paura. Kātahi ka rewa te paura ka totoka paparanga i te paparanga. Ko te nuinga o te tukanga DED e rua ngā tukanga tā: te rewa reihi me te whāngai waea reihi. Ka taea e ēnei hangarau e rua te hanga tika me te whakatika i ngā wāhanga whakarewa mā te whāngai tahi i te paura whakarewa, i te waea rānei. Ki te whakatauritea ki te LPBF, he nui ake te hua o te DED me te nui ake o te rohe hanga. Hei tāpiri, ka taea hoki e tēnei tikanga te whakarite i ngā rauemi hiato me ngā rauemi kua whakarōpūhia kia rite ki te mahi. Heoi, he ngoikore tonu te kounga o te mata o ngā wāhanga i tāia e te DED, ā, me tukatuka i muri mai hei whakapai ake i te tika o te waahanga ūnga.
I roto i te tukanga hanga tāpiri taiaho o nāianei, ko te hihi Gaussian arotahi te pūtake pūngao. Heoi, nā tōna tohatoha pūngao ahurei (pokapū teitei, taha iti), tera pea ka puta he pikinga wera nui me te kore pumau o te puna rewa. Ka hua ake he kounga hanga kino o ngā wāhanga tā. Hei tāpiri, ki te teitei rawa te pāmahana pokapū o te puna rewa, ka meinga ngā huānga whakarewa iti te ira rewa kia mimiti, ka kaha ake te kore pumau o te tukanga LBPF. Nō reira, me te pikinga o te porosity, ka tino heke te āhuatanga miihini me te roa o te ngenge o ngā wāhanga tā. Ko te tohatoha pūngao kore taurite o ngā hihi Gaussian ka arahi hoki ki te iti o te whakamahinga pūngao taiaho me te nui o te maumau pūngao. Hei whakatutuki i te kounga tā pai ake, kua tīmata ngā tohunga ki te tūhura i te utu mō ngā hapa o ngā hihi Gaussian mā te whakarerekē i ngā tawhā tukanga pēnei i te mana taiaho, te tere matawai, te matotoru o te paparanga paura, me te rautaki matawai, kia taea ai te whakahaere i te āheinga o te whakauru pūngao. Nā te matapihi tukatuka tino whaiti o tēnei tikanga, ka whakawhāitihia e ngā herenga ā-tinana pumau te āheinga o te arotautanga atu. Hei tauira, mā te whakanui ake i te kaha o te taiaho me te tere o te matawai ka taea te whakatutuki i te pai o te hanga, engari he maha ngā wā ka puta he utu mō te whakaheke i te kounga tā. I ngā tau tata nei, mā te whakarerekē i te tohatoha pūngao taiaho mā roto i ngā rautaki hanga hihi ka taea te whakapai ake i te pai o te hanga me te kounga tā, ka noho pea tēnei hei huarahi whanaketanga ā muri ake nei mō te hangarau hanga tāpiri taiaho. Ko te hangarau hanga hihi e pā ana ki te whakarerekē i te tohatoha ngaru o te hihi whakauru kia whiwhi ai i te tohatoha kaha me ngā āhuatanga horapa e hiahiatia ana. Ko te whakamahinga o te hangarau hanga hihi i roto i te hangarau hanga tāpiri whakarewa e whakaaturia ana i te Pikitia 2.
Te whakamahinga o te hangarau hanga kurupae i roto i te hanga taapiri laser
Ngā ngoikoretanga o te tānga kurupae Gaussian tuku iho
I roto i te hangarau hanga tāpiritanga reiti whakarewa, he pānga nui te tohatoha pūngao o te hihi reiti ki te kounga o ngā wāhanga tā. Ahakoa kua whānuitia te whakamahinga o ngā hihi Gaussian i roto i ngā taputapu hanga tāpiritanga reiti whakarewa, he maha ngā ngoikoretanga pēnei i te kounga tā kore pumau, te iti o te whakamahinga pūngao, me ngā matapihi tukanga whaiti i roto i te tukanga hanga tāpiritanga. I roto i ēnei, ko te tukanga rewa o te paura me te hihiri o te puna rewa i te wā o te tukanga tāpiritanga reiti whakarewa e pā tata ana ki te matotoru o te paparanga paura. Nā te mea he wāhi tauhiuhi paura me te rohe horo, he teitei ake te matotoru tuturu o te paparanga paura i te tumanako matapae. Tuarua, nā te pou mamaoa i puta ai ngā tauhiuhi matua whakamuri. Ka tukinga te mamaoa whakarewa ki te pakitara o muri hei hanga tauhiuhi, ka tauhiuhihia i te pakitara o mua poutū ki te wāhi kōpiko o te puna rewa (e whakaatuhia ana i te Pikitia 3). Nā te taunekeneke uaua i waenga i te hihi reiti me ngā tauhiuhi, ka pā kino ngā tauhiuhi i tukuna ki te kounga tā o ngā paparanga paura o muri. Hei tāpiri, ko te hanganga o ngā kōhao kī i roto i te puna rewa ka pā kino hoki ki te kounga o ngā wāhanga tā. Ko ngā pūwero o roto o te mea kua tāia, ko te nuinga o te wā, nā ngā pūwero raka kāore i te pumau.
Te tikanga hanganga o ngā hapa i roto i te hangarau hanga kurupae
Ka taea e te hangarau hanga kurupae te whakatutuki i te whakapainga mahi i roto i ngā āhuatanga maha i te wā kotahi, he rerekē tēnei i ngā kurupae Gaussian e whakapai ake ana i te mahi i roto i te āhuatanga kotahi i te utu o te patunga tapu i ētahi atu āhuatanga. Ka taea e te hangarau hanga kurupae te whakarite tika i te tohatoha pāmahana me ngā āhuatanga rere o te puna rewa. Mā te whakahaere i te tohatoha o te kaha taiaho, ka whiwhi i tētahi puna rewa pumau me te iti o te pikinga pāmahana. He pai te tohatoha kaha taiaho tika mō te pehi i te porosity me ngā hapa pupuhi, me te whakapai ake i te kounga o te tā taiaho i runga i ngā wāhanga whakarewa. Ka taea e ia te whakatutuki i ngā whakapainga maha i roto i te pai o te whakaputa me te whakamahinga paura. I taua wā anō, ka whakaratohia e te hangarau hanga kurupae he maha atu ngā rautaki tukatuka, e tino tuku ana i te herekoretanga o te hoahoa tukanga, he ahunga whakamua hou tēnei i roto i te hangarau hanga tāpiri taiaho.
Te wā tuku: 28-Pepuere-2024
