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hale hana kaʻina hana hoʻoheheʻe metala mim

Ke hōʻike nei nā mea ʻenekinia i nā ʻāpana metala kiʻekiʻe no nā valve hydraulic, nā hale pahū, a i ʻole nā ​​winch shaft - ʻoi loa ma lalo o ke kaomi kiʻekiʻe, ka lole kiʻekiʻe, a i ʻole nā kūlana corrosive - ʻaʻole pono lākou i kahi mea hoʻolako. Pono lākou i kahi hale hana kaʻina hana hoʻoheheʻe metala mim ka mea e hoʻomaopopo i ka hana metala, ke kūpaʻa dimensional, a me nā ʻano hana hemahema—ʻaʻole wale ka ʻae ʻana i kahi kiʻi.

Ua ʻike mākou i nā papahana he nui e kū nei ma ke kahua prototype no ka mea ua hana ka mea hana i koho ʻia i ka MIM ma ke ʻano he "kaʻina hana hoʻoheheʻe ʻē aʻe." ʻO ka ʻoiaʻiʻo, ʻo ka MIM kūleʻa no nā ʻāpana koʻikoʻi koʻikoʻi e koi i ka hoʻohui paʻa ʻana ma waena o ke koho pauda, ​​ka hoʻokumu ʻana i ka binder, debinding kinetics, sintering profile control, a me ka mīkini post-sinter. Ma QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., mālama mākou i kēlā me kēia ʻāpana MIM e like me kahi noho valve cobalt-nickel alloy: hoʻokahi kuhi hewa i ka mana kalapona i ka wā sintering hiki ke hoʻoulu i ka microcracking ma lalo o 300-bar cyclic loading. ʻO ia ke kumu ʻaʻole ʻo kā mākou keʻena ISO-compliant ma Qingdao i waho i ka debinding a i ʻole sintering - nona ka pōʻai wela piha, mai 650°C catalytic debind a 1280°C vacuum sintering me ka nānā pono ʻana i ka hau.

Ke nānā nei ka hapa nui o nā mea kūʻai aku i kahi kaohi koʻikoʻi: ʻoi aku ka maikaʻi o ka MIM i ka paʻakikī o ke ʻano ʻupena-akā i loko o nā palena geometric koʻikoʻi. Pono ka mānoanoa o ka pā ma waena o 1.5 mm a me 8 mm. ʻO nā lākiō hiʻohiʻona ma luna o 6:1 nā gradient mānoanoa pilikia. Nā ʻoki lalo? Hiki paha—akā me nā core ceramic collapsible, ʻaʻole nā ​​mea hana maʻamau. Ua kōkua mākou i nā mea kūʻai aku i ka hoʻolālā hou ʻana i nā ʻāpana pāpaʻi kobalt alloy AMS 5387 e hoʻopau i nā radii kūloko ʻoi, e ʻoki ana i ka distoring sintering e 40% ʻoiai e mālama ana i ka pololei o ke ala kahe. ʻAʻole ia he kumu. ʻO ia ka mea e hana ai i kāu hale hana kaʻina hana hoʻoheheʻe metala mim holo i ka 120+ mau ʻāpana MIM i kēlā me kēia makahiki ma nā meaʻai meaʻai aerospace-a hoʻopaʻa i kēlā me kēia helu emi ʻana, warpage vector, a me ka haʻahaʻa haʻahaʻa i kēlā me kēia pūʻulu.

Eia ka mea e hoʻokaʻawale ai i ka MIM pololei mai ka MIM waiwai:

  • Hoʻomaka ka traceability ma mua o ke komo ʻana o ka pauka i loko o ka pahu: Loaʻa mākou i nā pauka huila CoCrMo a me T800 i hoʻopaʻa ʻia me nā hōʻike PMI piha—a hōʻoia i ka ʻike o ka oxygen, ka hāʻawi ʻana i ka nui o nā ʻāpana (D50 = 8.2–9.6 µm), a me ka puʻupuʻu paʻa.
  • ʻAʻole i hoʻopaʻa ʻia ka hoʻopaʻa ʻana - nānā ʻia: Ma kahi o ka lōʻihi o ka hoʻopaʻa ʻana, ʻike mākou i ka pohō nui o ka manawa maoli ma o nā mea ʻike gravimetric. ʻO ka 0.3% koena mea hoʻopili e hoʻoulu i ka hoʻololi ʻana i ka ʻike kikoʻī—no ka mea, ʻo ka hoʻopau ʻole ʻana ke kumu i ka pehu; hoʻopaʻapaʻa nui e kono i ka pohā.
  • He ʻāpana kikoʻī nā ʻaoʻao hoʻopaʻa ʻana, ʻaʻole kikoʻī i ka umu: Loaʻa i ka hale pahu pahu piston pump kahi ala lohi ma waena o 800–1000°C ma mua o ka nozzle ʻāpana lahilahi. Hoʻoponopono mākou i nā manawa noho e pili ana i ka hoʻohālikelike ʻana i ka wela—ʻaʻole ka palapala kumu.
  • ʻAʻole hiki ke kūʻai ʻia ke geometry post-sinter: Loaʻa kēlā me kēia māhele MIM i ka nānā ʻana i ka CMM e pili ana i nā kelepona GD&T—ʻaʻole nā ana wale nō. Ana mākou i ka palahalaha ma nā ʻili e hoʻopaʻa ʻia i ka ± 1.2 µm, ka cylindricity ma nā puke pai lāʻau a hiki i ka 0.8 µm, a me ka ʻeleʻele o ka ʻili (Ra) ma nā ala wai i ≤0.4 µm—hōʻoia me ka optical profileometry.

Hiki i kekahi ke hoʻopaʻapaʻa e hāʻawi ka mīkini CNC i ka pololei ma mua o MIM. ʻOiaʻiʻo—no nā geometries maʻalahi. Akā e ho'āʻo e hoʻopaʻa i ka ± 0.015 mm concentricity ma waena o ʻelima mau pahu coaxial i hoʻokahi 316L kuhili ʻole pahū pahū, kēlā me kēia me nā wili kūloko a me nā awa lubrication cross-drilled. Pono ka mīkini i kēlā ʻāpana i ʻeono hoʻonohonoho, ʻekolu hoʻololi hoʻololi, a me ka hoʻoheheʻe wela hiki ʻole. ʻO ka mana MIM? Hoʻokahi ʻāpana ʻōmaʻomaʻo, hoʻokahi sinter, hoʻokahi hana hoʻopau hoʻololi-a me 22% haʻahaʻa haʻahaʻa haʻahaʻa ma nā puke ma luna o 500 pcs / makahiki. Ua hōʻoia mākou: i ka hapaha hope, ua hāʻawi mākou i 1,200 T800 alloy center shaft rollers no kahi ʻōnaehana winch kaʻa ʻenehana. Ua hala nā mea a pau i ka 100% hoʻāʻo ukana hana ma 18,500 N ikaika axial—ʻaʻohe hana hou.

Loaʻa kēlā hilinaʻi mai ka hoʻohui vertical hiki iā ʻoe ke hōʻoia. ʻAʻole wale nā ​​hale paʻi MIM a me nā umu sinter i kā mākou hale—akā, ʻo nā kikowaena CNC pololei hoʻi e hiki ke hoʻohuli paʻakikī i nā ʻāpana CoCr i hoʻopaʻa ʻia ma 85 HRC, nā umu mālama wela i hoʻopaʻa ʻia i ±2°C, a me nā laina passivation e like me ASTM A967. Ke hoʻouna ka mea kūʻai aku i kiʻi kiʻi no kahi plug AMS 5387 me nā puka makapō a me nā maka hoʻopaʻa ʻia, ʻaʻole mākou e nīnau "Hiki iā ʻoe ke hana?" Nīnau mākou: "He aha ke kūlana koʻikoʻi koʻikoʻi? A laila, koho mākou i ka meaʻai maikaʻi loa, e hoʻohālike i ka distortion sintering ma Simufact Additive, e kūkulu i ka mold me ka hao H13 paʻakikī a me nā ala hoʻomaha conformal, a hoʻopaʻa i nā ʻāpana kaʻina ma mua o ka pana mua.

Inā ʻoe e loiloi ana i kahi hale hana kaʻina hana hoʻoheheʻe metala mim, hoʻokuʻu i nā palapala hoʻonani. E noi no: (1) nā moʻolelo ʻāpana sintering e hōʻike ana i nā ʻano like ʻole ma waena o ka holo ʻana, (2) nā hōʻike CMM e hoʻohālikelike ana i ke ʻano like me kāu, a me (3) nā hōʻike o ka hōʻoia ʻana o ka waiwai no kāu māka alloy pololei - ʻaʻole wale ʻo "ISO 13322-2 pauda kūpono." Ma QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., ʻaʻole laka ʻia kēlā mau palapala i loko o kahi waihona waihona. Hoʻopili ʻia lākou i kēlā me kēia PO, hōʻano hou ʻia i ka manawa maoli, a kaʻana like ma mua o ka ʻae ʻana i nā mea hana. No ka mea, ʻaʻole ʻo ka pololei kahi ʻāpana. ʻO ia ka hoʻonohonoho paʻamau.


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