Ke makemake nā ʻenekinia i nā ʻāpana metala kiʻekiʻe e kū i ke kaomi hydraulic 30,000 psi, e kūʻē i ka hōʻeha ʻana i nā hale paʻakai wai paʻakai, a i ʻole e mālama i ke kūpaʻa ʻana ma hope o 800°C ka wela wela—e hāʻule pinepine ka mīkini maʻamau a i ʻole ka hoʻoheheʻe make. Ma laila kahi ʻoiaʻiʻo hale hana hoʻoheheʻe metala loaʻa kona wahi: ʻaʻole ma ke ʻano he mea hoʻolako maʻamau, akā ma ke ʻano he hoa loea akamai i ka physics o nā microstructures maikaʻi, binder burnout kinetics, a me ka sintering shrinkage uku.
Ua ʻike mākou i nā mea kūʻai aku e hoʻouna ana i nā prototypes MIM me ± 0.3% linear tolerance—e ʻike wale ʻia i ka wā o ka hoʻāʻo hana ʻana i hoʻopaʻa ʻia nā nozzles alloy cobalt ma lalo o ke kaʻa uila. ʻO ke kumu kumu? ʻAʻole lawa ka mana ma luna o ka debinding ramp rate a me ka sintering lewa hau. Ma QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., hoʻomaka kēlā me kēia ʻāpana MIM me AMS 5387 a i ʻole T800 pauda palapala hōʻoia-ʻaʻole wale i ka ʻikepili tensile, akā ʻo ka ʻike o ka oxygen, ka hāʻawi ʻana i ka nui o nā ʻāpana (D50 ≤ 8.2 µm), a me ka hōʻoia ʻana o ka tap density. Hōʻole mākou i nā pūʻulu ma waho o 4.2–4.4 g/cm³. ʻAʻole nui kēia. ʻO ia kā mākou e paʻa ai ± 0.05 mm ma 12-mm-diameter piston pump cylinder bores hale ma hope o ka sintering.
Hana ʻia ka hapa nui o nā hale hana i ka MIM ma ke ʻano he "pauka + mold + ahi." Hana mākou iā ia ma ke ʻano he ʻekolu mau ʻano hoʻopaʻapaʻa paʻa: ka hoʻokumu ʻana i ka meaʻai meaʻai i hoʻomalu ʻia i ka rheology, ka hoʻolālā ʻana o ka lua polū pololei i hoʻopaʻa ʻia no ka emi ʻana o ka anisotropic, a me ka sintering i hoʻopaʻa ʻia i ka lewa me ka nānā ʻana i ke kaomi ʻāpana oxygen manawa maoli. No ka laʻana, pono kā mākou mau pahu hoʻoheheʻe cobalt-nickel i kahi ʻaoʻao sintering ʻelua: 60 mau minuke ma 1150°C ma 5% H₂–95% N₂ e wehe i ke koena kalapona, a laila 90 mau minuke ma 1320°C i loko o ka hydrogen maʻemaʻe e loaʻa ai>99.2% density. Hoʻokuʻu i kēlā me kēia ʻanuʻu, a hāʻule ka paʻakikī mai 42 HRC a i 36 HRC-hiki ke hoʻopau i ka wā o nā noho kiʻekiʻe. Hoʻopaʻa mākou i kēlā me kēia ʻāpana. Loaʻa i kēlā me kēia pūʻulu ka traceability piha: ʻāpana pauka, ʻāpana binder, ID cavity mold, sintering furnace zone, a me ka hōʻike nānā CMM.
Hoʻokaʻawale ʻo Vertical integration iā mākou mai nā brokers. ʻAʻole mākou i waho i ka sintering. ʻAʻole mākou e hoʻopau i ka mīkini hope. ʻO kā mākou mea hoʻokō ISO e holo ana i ka MIM ma ka ʻaoʻao ʻelima-axis CNC machining, hoʻoheheʻe kālā, a me ka hoʻomaʻemaʻe wela wela—ma lalo o ka hale hoʻokahi. Ke hoʻouna ka mea kūʻai aku i kahi kaha kiʻi GD&T no kahi ʻāpana pamu AMS 5387 me nā kāhea kūlana ʻoiaʻiʻo ma nā puka ʻewalu Ø3.2 mm e pili ana i kahi datum Ø25 mm, ʻaʻole mākou e noi no ka wehewehe. Hoʻohālike mākou i ka hoʻohuli ʻana i ke ala hana, hoʻoponopono no ka distortion post-sintering me ka hoʻohana ʻana i nā palapala ʻāina hōʻemi mōʻaukala, a hoʻohana i ka huli hoʻopau māmā ma kahi e koi ai nā wahi hoʻopaʻa koʻikoʻi iā Ra ≤ 0.4 µm. ʻAʻohe hana hou. ʻAʻohe mea kupanaha. ʻO ka hoʻokō mua wale nō.
ʻO ka hāʻawi ʻana i ka honua maoli e pili ana i ka mea e hana ʻia ma mua o ka pana mua. Ua loiloi mākou ma luna o 1,200 MIM-mākaukau kiʻi mai ka makahiki 2020-a ʻike ʻia ʻekolu mau helu hemahema: nā undercuts e koi ana i nā electrodes sinker EDM ma kahi o ke kila kila maʻamau, nā neʻe ʻana o ka mānoanoa o ka pā ma mua o 3:1 ratio (no ka hoʻohaʻahaʻa ʻokoʻa ʻana), a me nā puka makapō i ʻoi aku ka hohonu ma mua o 4x diameter (trapping binder). Hāʻawi kā mākou hui ʻenekinia i kēia ma ka loiloi mua o ka hana ʻana-me ka uku ʻole-a hoʻolālā i nā tweak geometry e hōʻemi i ke kumukūʻai e 22% ma ka awelika. Ua hōʻemi kekahi mea kūʻai ʻaila ʻaila ʻAmelika ʻĀkau i ka manawa alakaʻi mai 14 mau pule a i 6.5 mau pule ma hope o ka hoʻohana ʻana i kā mākou puʻupuʻu pane DFM.
Inā koi kāu noi i ka hoʻihoʻi hou ʻana ma waena o 5,000 mau ʻāpana, ka paʻa ʻana o ka metallurgical ma waena o 20 mau pūʻulu, a i ʻole ka hōʻoia hana ma mua o ASTM B962, pono ʻoe ma mua o kahi hale hana hoʻoheheʻe metala. Pono ʻoe i kahi hoa hana e mālama i kēlā me kēia gram o ka pāpaʻi kobalt e like me nā mea kani i hoʻopaʻa ʻia - a ana i ka kūleʻa ʻaʻole i loko o nā pahu i hoʻouna ʻia, akā i ka hāʻule ʻole o ka mahina ma hope o 10,000 mau hola hana. QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. kūkulu i kēlā ʻoiaʻiʻo i kēlā me kēia kaʻina hana. ʻAʻole e like me ke kumumanaʻo. E like me ka hana i kēlā me kēia lā.
