Ka whakamahia e mātou ngā pihikete hei whakapai ake i tō wheako. Mā te haere tonu ki te tirotiro i tēnei pae tukutuku, e whakaae ana koe ki tā mātou whakamahinga o ngā pihikete. Ētahi atu kōrero.
I roto i tētahi tuhinga i whakaputaina i roto i te hautaka Additive Manufacturing Letters, e matapakihia ana e ngā kairangahau te whai huatanga o te tauhiuhi maitai kore waikura kua whakairohia ki te matū hei whakaroa i te ora o te paura i roto i te hanga tāpiri.
Rangahau: Te Whakaroa i te Ora o te Paura i roto i te Hanganga Tāpiri: Te Whakairo Matū o te Pāpaka Kowiri tira. Whiwhinga Whakaahua: MarinaGrigorivna/Shutterstock.com
Ko te Whakakotahitanga o te Moenga Paura Taiaho Konganuku (LPBF) ka puta mai i ngā pata rewa e tukuna ana mai i te puna rewa, i ngā matūriki paura rānei e werahia ana kia tata, kia teitei ake rānei i te ira rewa i a rātou e haere ana i roto i te hihi taiaho.
Ahakoa te whakamahinga o tētahi taiao kore mahi, ko te kaha tauhohenga teitei o te konganuku e tata ana ki tōna pāmahana rewa ka whakatairanga i te waikura. Ahakoa ka rewa ngā matūriki ruia e peia ana i te wā o te LPBF i te mata mō te wā poto, tera pea ka horapa ngā huānga pūngāwerewere ki te mata, ā, ko ēnei huānga he kaha te hiahia ki te hāora ka puta he paparanga waikura matotoru.
I te mea he teitei ake te pēhanga wāhanga o te hāora i roto i te LPBF i tērā i roto i te whakaātomotanga hau, ka nui ake te tūponotanga o te herea ki te hāora.
E mōhiotia ana ka tere te waikura o ngā parahanga maitai kore waikura me te koranu nikara, ka hanga moutere tae atu ki ētahi mita te matotoru. Hei tāpiri, ko ngā maitai kore waikura me ngā koranu nikara, pērā i ngā mea e whakaputa ana i ngā parahanga waikura momo moutere, he rauemi mīhini noa iho i roto i te LPBF, ā, ko te whakamahi i tēnei tikanga ki ngā parahanga whakarewa LPBF noa ake hei whakaatu he mea nui te whakahoutanga matū ki te Paura i te huarahi noa.
(a) Whakaahua SEM o ngā matūriki parai maitai kore waikura, (b) tikanga whakamātautau o te whakairo matū wera, (c) maimoatanga LPBF o ngā matūriki parai kua kore e waikura. Whiwhinga whakaahua: Murray, J. W, et al, Additive Manufacturing Letters
I roto i tēnei rangahau, i whakamahia e ngā kaituhi tētahi tikanga whakairo matū hou hei tango i ngā waikura mai i te mata o ngā paura parai maitai kore waikura kua waikurahia. Ko te whakarewatanga o te konganuku huri noa me raro i ngā moutere waikura i runga i te paura te tikanga matua mō te tango waikura, e āhei ai te tango waikura kaha ake. I tātarihia ngā paura parai, ngā parai me ngā paura tauhou ki te awhe rahi paura kotahi mō te tukatuka LPBF.
I whakaaturia e te tīma me pēhea te tango i ngā waikura mai i ngā matūriki parai o te maitai kore waikura, inā koa ko ērā i wehea mā te whakamahi i ngā tikanga matū hei hanga i ngā moutere waikura whai rawa i te Si me te Mn ki runga i te mata paura. I kohia he 316L o te parai mai i te moenga paura o ngā tānga LPBF, ā, i whakairohia mā te matū mā te rumaki. Whai muri i te tātari i ngā matūriki katoa ki te awhe rahi ōrite, ka tukatukahia e te LPBF kia kotahi te ara me te parai kua whakairohia me te maitai kore waikura hou.
I tirohia e ngā kairangahau te pāmahana me ētahi atu mea whakairo maitai kore waikura e rua. Whai muri i te tātaritanga ki te awhe rahi ōrite, i hangaia ngā ara takitahi LPBF mā te whakamahi i ngā paura tauhou rite tonu, ngā paura tauhiuhi, me ngā paura tauhiuhi i whakairohia pai.
Ngā tohu LPBF takitahi i puta mai i te para, te para whakairo, me te paura parakore. E whakaatu ana te ahua whakanui teitei kua whakakorea te paparanga waikura e kitea ana i runga i te ara para kua whakairohia. I whakaatu te paura taketake kei te noho tonu ētahi waikura. Whiwhinga whakaahua: Murray, J. W, et al, Additive Manufacturing Letters
I heke te horahanga waikura i runga i te paura tauhiuhi maitai kore waikura 316L mā te 10 tau, mai i te 7% ki te 0.7% i muri i te whakamahanatanga o te matū a Ralph ki te 65 °C i roto i te kaukau wai mō te 1 hāora. I te mahere i te horahanga nui, i whakaatuhia e ngā raraunga EDX te hekenga o ngā taumata hāora mai i te 13.5% ki te 4.5%.
He iti ake te paninga para waikura o te para i whakairohia ki te mata o te ara, ki te whakaritea ki te para. Hei tāpiri, mā te whakairo matū o te paura ka nui ake te mimiti o te paura ki te ara. Ka taea e te whakairo matū te whakapai ake i te whakamahinga anō me te roa o te para, o ngā paura rānei e whakamahia whānuitia ana, e hangaia ana mai i ngā paura maitai kore waikura e whakamahia whānuitia ana, ā, e ātete ana ki te waikura.
I roto i te whānuitanga katoa o te tātari 45-63 µm, ko ngā matūriki kua kohikohia e toe ana i roto i ngā paura tauhiuhi kua whakairohia me ngā paura kāore i whakairohia e whakamārama ana he aha i rite ai ngā rahinga iti o ngā paura kua whakairohia me ngā paura tauhiuhi, engari he tata ki te 50% te nui ake o ngā rahinga o ngā paura taketake. I kitea ngā paura kohikohi, ngā paura hanga-a-rangi rānei e pā ana ki te kiato papatipu, ā, nō reira, ki te rōrahi.
He iti ake te paninga para waikura o te para kua whakairohia ki te mata o te ara, ki te whakaritea ki te para. Ina tangohia ngā waikura mā te matū, ka whakaatuhia e ngā paura here-haurua me ngā paura tahanga te taunakitanga o te pai ake o te herenga o ngā waikura kua whakaitihia, e kiia ana ko te pai ake o te makuku.
He hoahoa e whakaatu ana i ngā painga o te maimoatanga LPBF i te wā e tangohia ana ngā waikura mai i te paura tauhiuhi i roto i ngā pūnaha maitai kore waikura. Ka tutuki te makuku pai rawa atu mā te whakakore i ngā waikura. Whiwhinga whakaahua: Murray, J. W, et al, Additive Manufacturing Letters
Hei whakarāpopototanga, i whakamahia e tēnei rangahau tētahi tikanga whakairo matū hei whakaora matū i ngā paura para o te maitai kore waikura kua tino waikuratia mā te rumaki ki roto i te matū a Ralph, he otinga o te konupora ferric me te konupora cupric i roto i te waikawa hauwai. I kitea ko te rumaki ki roto i te otinga para Ralph wera mō te 1 hāora i hua ake ai he 10-ngā wā te whakaiti i te taupoki horahanga waikura i runga i te paura i tauhiuhia.
E whakapono ana ngā kaituhi he kaha pea te whakapai ake i te whakairo matū me te whakamahi i runga i te tauine whānui hei whakahou i ngā matūriki tauhiuhi maha kua whakamahia anō, i ngā paura LPBF rānei, ā, mā reira ka piki ake te uara o ngā rauemi paura utu nui.
Murray, JW, Speidel, A., Spierings, A. et al. Te whakaroa i te ora o te paura i roto i te hanga tāpiri: te whakairo matū o te parahanga maitai kore waikura. Ngā Reta Hanga Tāpiri 100057 (2022). https://www.sciencedirect.com/science/article/pii/S2772369022000317
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He kaituhi hangarau motuhake a Surbhi Jain kei Delhi, Īnia. He tohu PhD tāna. I whiwhi ia i te tohu PhD i roto i te Ahupūngao mai i Te Whare Wānanga o Delhi, ā, i whai wāhi atu ki ngā mahi pūtaiao, ahurea me ngā mahi hākinakina. Ko tana papamuri mātauranga kei roto i te rangahau pūtaiao rauemi, e aro nui ana ki te whakawhanake i ngā taputapu whatu me ngā pūoko. He nui ōna wheako ki te tuhi ihirangi, te whakatika, te tātari raraunga whakamātautau me te whakahaere kaupapa, ā, e whitu ngā pepa rangahau kua whakaputaina e ia ki ngā hautaka kua tohua e Scopus, ā, e rua ngā patene Inia kua tukuna e ia i runga i āna mahi rangahau. He ngākau nui ki te pānui pukapuka, te tuhituhi, te rangahau me te hangarau, he pai ki a ia te tunu kai, te mahi whakaari, te māra me ngā hākinakina.
Jainism, Subi.(24 Mei 2022). He tikanga whakairo matū hou hei tango i ngā waikura mai i te paura parai maitai kore waikura kua waikura.AZOM. I tangohia i te 21 o Hūrae, 2022 mai i https://www.azom.com/news.aspx?newsID=59143.
Hainism, Subi.”He tikanga whakairo matū hou hei tango i ngā waikura mai i te paura parai o te maitai kore waikura”.AZOM.21 Hōngongoi, 2022..
Hainism, Subi.”He tikanga whakairo matū hou hei tango i ngā waikura mai i te paura parai o te maitai kore waikura”.AZOM.https://www.azom.com/news.aspx?newsID=59143.(I uru atu i te 21 o Hūrae 2022).
Jainism, Subi.2022. He tikanga whakairo matū hou hei tango i ngā waikura mai i te paura parai o te maitai kore waikura kua waikurahia.AZoM, i tirohia i te 21 o Hūrae, 2022, https://www.azom.com/news.aspx?newsID=59143.
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