Ke hoʻolei nei ʻoe i ka hale pāpaʻi kobalt alloy no ka lawelawe hydraulic kaomi kiʻekiʻe-a i ʻole kahi nozzle AMS 5387 e pono e ola i ka 650 ° C a me ke koʻikoʻi wela cyclic-ʻaʻole ʻo ka ceramic core kahi mea hoʻoheheʻe ʻia. ʻO ia ka mea hoʻolālā leo o ka geometry kūloko, ka mea hōʻoia i ka mana o ka mānoanoa o ka pā, ka laina mua o ka pale ʻana i ka hoʻoheheʻe ʻana i ka dimensional i ka hoʻolei kālā. Ma QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., ua ʻike mākou i ka hāʻule ʻana o nā cores seramika ma waena o ka ninini ʻana ma luna o ka T800-based impeller shrouds—ʻaʻole ma muli o ka pau ʻole o ka pau ʻana o ka binder, akā no ka like ʻole o ka coefficient of thermal expansion (CTE) me ka pūpū ʻaʻole i hōʻoia ʻia ma waena o ka 25°C-110 piha. ʻO ia ke kumu ʻo "ceramic core for investment casting factory" ʻaʻole ia he huaʻōlelo ʻimi waiwai iā mākou. He kikoʻī pololei me nā hopena honua maoli.
Hana mākou ma luna o 12,000 cores ceramic i kēlā me kēia makahiki - kēlā me kēia mea i hoʻolālā ʻia no kahi ʻōnaehana alloy kikoʻī, hoʻolālā gating, a me ka envelop mīkini hana hope. Hoʻohana kā mākou mau cores maʻamau i nā huila silica-alumina fused me nā CTE i hoʻopaʻa ʻia i ± 0.2 × 10⁻⁶/°C e kūʻē i nā alloys CoCr; ʻO nā ʻano hana maʻamau ka zirconia-reinforced ʻokoʻa no ka> 1200 ° C titanium aluminide hoʻāʻo. ʻAʻole like me nā cores off-the-shelf i kūʻai ʻia e nā mea hoʻolako refractory maʻamau, loaʻa iā mākou ʻekolu mau hōʻoia hiki ʻole ke kūʻai ʻia ma mua o ka hoʻokuʻu ʻana: XRD pae paʻa ma 1000°C, ikaika paʻi anuanu ≥18 MPa ma hope o ka dewaxing, a me ka hoʻihoʻi hou ʻana i hōʻoia ʻia ma o CT scanning-ʻaʻole wale nā calipers. Ua ana mākou i ka hoʻololi kumu-i-core ma lalo o 0.015 mm ma nā ʻaoʻao kūloko 80 mm-lōʻihi, koʻikoʻi inā he 0.15 mm wale nō ka haʻawina mīkini hope loa i kēlā me kēia ʻaoʻao.
Hiki i kekahi ke hoʻopaʻapaʻa ʻo ka hoʻoemi ʻana i ka manawa alakaʻi. Akā i kā mākou ʻike me nā hale pahu piston pump cylinder, ʻoi aku ka nui o ke kumukūʻai o kēlā mau koho. Haʻalele nā koʻa one i ka ʻeleʻele o ka ʻili ma luna o Ra 12.5 µm—ʻaʻole ʻae ʻia no nā ili hoʻopaʻa hydraulic e koi ana iā Ra ≤1.6 µm ma hope o ka hoʻopau ʻana i ka mīkini. Hoʻokomo ʻia nā cores mīkini i nā microcracks mai ka pale ʻana o ka mea hana, e hoʻolaha ana i ka wā o ke kī ʻana i ka pūpū a hoʻāla ʻia ka pūpū kūloko. Ua ʻimi mākou i ka 23% kiʻekiʻe o ka nui o ka ʻōpala ma ia mau ʻāpana me nā cores seramika me ka ikaika ʻōmaʻomaʻo i hoʻopaʻa ʻia a me nā ʻaoʻao sintering. ʻAʻole ʻoi aku ka wikiwiki o ka hoʻonā - ʻoi aku ka naʻauao: ka geometry kumu mua i hōʻoia ʻia, nā ʻano wela i hoʻohālikelike ʻia, a me nā moʻolelo puʻupuʻu hiki ke hoʻopaʻa ʻia i hoʻopaʻa ʻia i kēlā me kēia pahu hoʻolei.
He aha ka mea e hoʻokaʻawale ai i kahi mea hoʻolako kumu ceramic hilinaʻi mai kahi mea kūʻai kālepa? ʻEhā mau mea a mākou e hōʻoia ai i kēlā me kēia lā:
- Ka palapala hōʻoia: Ke lawe nei kēlā me kēia pūʻulu silica i nā hōʻike hoʻāʻo ASTM C704—ʻaʻole nā ʻōlelo hoʻolaha wale nō
- Kaʻina hana palapala ʻāina: ʻO ka hoʻomaloʻo kumu ma hope o ka ISO 9001-controlled humidity ramps (ʻaʻole i hoʻopaʻa ʻia i ka manawa manawa), pale i ka micro-cracking ma nā vanes 3.2 mm-mānoanoa.
- ʻO ke kuleana nui: Ana mākou i kēlā me kēia kumu me kahi Zeiss CONTURA G2 RDS CMM, ʻaʻole nā mea hoʻohālikelike optical — koʻikoʻi no nā hiʻohiʻona GD&T e like me ke kūpaʻa kūlana Ø0.05 mm.
- ʻO ka hoʻopaʻa ʻana i ka huila: Hoʻāʻo ʻia nā cores i hoʻokumu ʻia i loko o nā ʻōnaehana pūpū waiwai maoli me ka hoʻohana ʻana i kāu slurry viscosity a me ka pōʻai dip, ʻaʻole nā molds plaster generic
Hāʻawi kēia pae mana iā mākou e hoʻopuka i nā cores seramika e paʻa mau ana ma o ka dewaxing, ke kī ʻana, a me ka ninini metala - ʻoiai no nā geometries paʻakikī e like me nā kino valve multi-port me ka hui ʻana i nā kahawai hoʻomaha 2.5 mm-diameter. Ke hōʻike mau nei nā mea kūʻai ma ʻAmelika ʻĀkau a me ʻEulopa he 15-20% ka liʻiliʻi o nā hanana hana hou ma nā pahu e koi ana i nā hoʻomanawanui kūloko (± 0.08 mm). ʻAʻohe kilokilo. Hoʻopaʻa wale ʻia nā ʻāpana kaʻina hana, ka metrology calibrated, a me ka alignment metallurgical i kūkulu ʻia i loko o ke kumu - ʻaʻole i hoʻohui ʻia ma ke ʻano he manaʻo hope.
Inā ʻoe e ʻimi nei i kahi ceramic core no ka hale hana hoolei waiwai noi kahi e hilinaʻi ai ka hana hana i ka ʻoiaʻiʻo contour kūloko-ʻaʻole "kupono" wale nō - a laila ʻoi aku ka liʻiliʻi o nā pepa ʻikepili waiwai a me nā manawa hoʻopuka ma mua o nā log hoʻohālikelike wela a me nā hōʻike nānā CMM. Ma QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., mālama mākou i kēlā me kēia kumu ma ke ʻano he mea hana, ʻaʻole ia he mea pau. Hāʻawi mākou i ka ʻikepili hoʻāʻo piha me nā mea kūʻai aku ma mua o ka ʻae ʻana o ka ʻatikala mua. Hoʻololi mākou i nā lakio mea hoʻopili e pili ana i ka permeability o kāu pūpū - ʻaʻole kā mākou kumu paʻamau. A mālama mākou i nā moʻolelo puʻupuʻu no 10 mau makahiki, ʻaʻole no ka hoʻokō wale ʻana, akā no laila hiki iā ʻoe ke ʻimi i kekahi anomaly i hope i ka holo kiln pololei, raw lot, a me ka hoʻololi o ka mea hana.
ʻAʻole pili ka wā e hiki mai ana o ka hoʻolei pololei ʻana i nā umu nui a i ʻole CNC wikiwiki. E pili ana i ka hoʻopau ʻana i ka ʻokoʻa ma ke kumu - e hoʻomaka ana me ke kumu. Ke ulu nei ka noi no nā paia ʻoi aku ka lahilahi, nā ala ʻoi aku ka paʻa, a me nā ʻāpana wela kiʻekiʻe e like me T800 a me CMSX-4, e neʻe nā cores seramika mai ka ʻenehana hiki i ka puka kumu maikaʻi. Hoʻomaka kēlā hoʻololi me ka nīnau ʻaʻole "Hiki ke hana ʻia?" akā "Pehea e hiki ai ke wānana a hōʻoia ʻia kāna ʻano?" Ua kūkulu mākou i kā mākou hale hana, kā mākou protocols, a me kā mākou hui pū ʻana e pili ana i kēlā nīnau. No ka mea, i ka wā e hana ai kāu ʻāpana ma 350 bar i loko o kahi hui pauma waho, ʻaʻohe wahi no ka kuhi ʻana ma ka hakahaka.
