Ua kūkulu mākou a pau i nā hale kākela ma kahakai: nā pā ikaika, nā hale kiaʻi nani, nā moats piha i nā manō.Inā like ʻoe me aʻu, e kāhāhā ʻoe i ka pili pono ʻana o kahi wai liʻiliʻi—a hiki i ka wā e hōʻike mai ai kou kaikuaʻana a kiki iā ia me ka hauʻoli luku.
Hoʻohana pū ʻo Entrepreneur Dan Gelbart i ka wai e hoʻopaʻa ai i nā mea, ʻoiai ʻoi aku ka lōʻihi o kāna hoʻolālā ma mua o ke kahakai kahakai.
Ma ke ʻano he pelekikena a hoʻokumu ʻo Rapidia Tech Inc., he mea hoʻolako i nā ʻōnaehana paʻi 3D metala ma Vancouver, British Columbia, a me Libertyville, Illinois, ua hoʻomohala ʻo Gelbart i kahi ʻano hana hana e hoʻopau ai i nā hana hoʻopau manawa i loko o nā ʻenehana hoʻokūkū me ka hoʻomaʻamaʻa nui ʻana i ke kākoʻo..
ʻOi aku ka paʻakikī o ka hoʻohui ʻana i nā ʻāpana he nui ma mua o ka hoʻoluhi ʻana iā lākou i loko o kahi wai liʻiliʻi a hoʻopili pū iā lākou-ʻoiai no nā ʻāpana i hana ʻia me nā hana hana kuʻuna.
Kūkākūkā ʻo Gelbart i kekahi mau ʻokoʻa koʻikoʻi ma waena o kāna mau ʻōnaehana wai a me ka poʻe e hoʻohana ana i nā pauka metala i loaʻa ka 20% a 30% wax a me ka polymer (ma ka nui).Hoʻopuka nā mea paʻi 3D metala ʻelua poʻo ʻo Rapidia i kahi paʻi mai ka pauka metala, ka wai a me ka mea hoʻopaʻa resin i ka nui mai ka 0.3 a i ka 0.4%.
Ma muli o kēia, ua wehewehe ʻo ia, ua hoʻopau ʻia ke kaʻina debinding e koi ʻia e nā ʻenehana hoʻokūkū, e lawe pinepine ana i kekahi mau lā, a hiki ke hoʻouna pololei ʻia ka ʻāpana i ka umu sintering.
ʻO nā kaʻina hana ʻē aʻe ka hapa nui i loko o ka ʻoihana "ʻoihana injection molding (MIM) lōʻihi e koi ana i nā ʻāpana unsintered unsintered e loaʻa i nā ʻāpana kiʻekiʻe o ka polymer e hoʻomaʻamaʻa i kā lākou hoʻokuʻu ʻana mai ka mold," wahi a Gelbart."Akā, ʻo ka nui o ka polymer e pono ai e hoʻopaʻa i nā ʻāpana no ka paʻi 3D he liʻiliʻi loa - lawa ka hapaʻumi o ka pākēneka i ka nui o nā hihia."
No laila no ke aha e inu ai i ka wai?E like me kā mākou hiʻohiʻona sandcastle i hana ʻia i ka paʻi (metala paʻi i kēia hihia), paʻa ka polymer i nā ʻāpana i ka wā maloʻo.ʻO ka hopena, he ʻāpana me ka paʻa a me ka paʻakikī o ka paʻakai ʻaoʻao, ikaika e kū i ka mīkini ma hope o ka hui ʻana, ka mīkini ʻoluʻolu (ʻoiai ʻo Gelbart e paipai nei i ka mīkini post-sinter), hui pū me ka wai me nā ʻāpana ʻē aʻe i pau ʻole, a hoʻouna ʻia i ka umu.
ʻO ka hoʻopau ʻana i ka degreasing hiki ke paʻi ʻia nā ʻāpana nui a me ka mānoanoa o ka paia no ka mea i ka wā e hoʻohana ai i nā pauka metala i hoʻopaʻa ʻia me ka polymer, ʻaʻole hiki i ka polymer ke "puhi" inā ʻoi aku ka mānoanoa o nā paia.
Ua ʻōlelo ʻo Gelbart e koi ana kekahi mea hana mea hana i ka mānoanoa pā o 6mm a i ʻole ka liʻiliʻi.“No laila, e ʻōlelo kākou ke kūkulu nei ʻoe i ʻāpana e pili ana i ka nui o ka ʻiole kamepiula.I kēlā hihia, pono ka ʻaoʻao o loko a i ʻole he ʻano mesh paha.He mea maikaʻi kēia no nā noi he nui, ʻo ka māmā ka pahuhopu.Akā inā makemake ʻia ka ikaika kino e like me ka bolt a i ʻole kekahi ʻāpana ikaika kiʻekiʻe, a laila ʻaʻole kūpono ʻo [metal powder injection] a i ʻole MIM.
Hōʻike ʻia kahi kiʻi hou i paʻi ʻia i ka paʻakikī o loko e hiki i kahi mea paʻi Rapidia ke hana.
Hōʻike ʻo Gelbart i kekahi mau hiʻohiʻona ʻē aʻe o ka mea paʻi.Hiki ke hoʻopiha hou ʻia nā pahu pahu metala a hiki i nā mea hoʻohana ke hoʻihoʻi iā lākou i Rapidia no ka hoʻopiha hou ʻana e loaʻa nā helu no nā mea i hoʻohana ʻole ʻia.
Loaʻa nā ʻano mea like ʻole, me ka 316 a me 17-4PH stainless steel, INCONEL 625, ceramic a me zirconia, a me ke keleawe, tungsten carbide a me nā mea ʻē aʻe i ka hoʻomohala ʻana.ʻO nā mea kākoʻo - ka mea huna i loko o nā mea paʻi metala he nui - ua hoʻolālā ʻia e paʻi i nā substrate i hiki ke hoʻoneʻe ʻia a i ʻole "evaporated" ma ka lima, e wehe ana i ka puka i nā mea ʻē aʻe i hiki ʻole ke hana hou ʻia.
He ʻehā makahiki ʻo Rapidia i ka ʻoihana a ʻoiaʻiʻo, ke hoʻomaka nei."Ke lawe nei ka hui i kona manawa e hoʻoponopono i nā mea," wahi a Gelbart.
I kēia lā, ua hoʻonohonoho ʻo ia a me kāna hui i ʻelima mau ʻōnaehana, me hoʻokahi ma Selkirk Technology Access Center (STAC) ma British Columbia.Ua hoʻohana ka mea noiʻi ʻo Jason Taylor i ka mīkini mai ka hopena o Ianuali a ua ʻike ʻo ia i nā pōmaikaʻi he nui ma mua o kekahi mau paʻi paʻi STAC 3D.
Ua ʻike ʻo ia ʻo ka hiki ke "pili pū me ka wai" i nā ʻāpana maka ma mua o ka sintering he mana nui.He ʻike nō hoʻi ʻo ia e pili ana i nā pilikia e pili ana i ka degreasing, me ka hoʻohana ʻana a me ka hoʻopau ʻana i nā kemika.ʻOiai ʻo nā ʻaelike hōʻike ʻole e pale iā Taylor mai ka hāʻawi ʻana i nā kikoʻī o ka hapa nui o kāna hana ma laila, ʻo kāna papahana hoʻāʻo mua kekahi mea a mākou e manaʻo ai: kahi lāʻau paʻi 3D.
"Ua maikaʻi loa ia," wahi āna me ka ʻakaʻaka.“Ua hoʻopau mākou i ka maka, ua wili i nā lua no ke kumu, a ke hoʻohana nei au i kēia manawa.Pīhoihoi mākou i ka maikaʻi o ka hana i hana ʻia me ka ʻōnaehana hou.E like me nā ʻāpana sintered a pau, aia kekahi shrinkage a me kahi ʻano misalignment, akā ua lawa ka mīkini.I ka manawa like, hiki iā mākou ke uku no kēia mau pilikia i ka hoʻolālā.
Hoʻopili ka Additive Report i ka hoʻohana ʻana i nā ʻenehana hana hoʻohui i ka hana maoli.Ke hoʻohana nei nā mea hana i kēia lā i ka paʻi 3D e hana i nā mea hana a me nā mea hana, a ke hoʻohana nei kekahi i ka AM no ka hana kiʻekiʻe.E hōʻike ʻia kā lākou mau moʻolelo ma ʻaneʻi.
Ka manawa hoʻouna: ʻAukake-23-2022