ʻO ka hoʻopaʻa ʻana i nā ʻoihana ʻoihana pauka ʻaʻole ia he hana hope loa - ʻo ia ka manawa hana-a-ʻoki ʻia no ka pono ʻāpana, kūpaʻa dimensional, a me ka hana lōʻihi i nā noi kiʻekiʻe. Ma QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., ua hoʻopaʻa ʻia mākou ma luna o 12,000 mau pūʻulu o nā pahu kobalt-nickel alloy compact mai ka makahiki 2018 - ʻo ka hapa nui o AMS 5387 a me T800-grade nā mea i hoʻolālā ʻia no nā hale pahū hydraulic, nā noho kiwi puʻupuʻu, a me nā huila winch center shaft. ʻAʻole i loko o nā puke haʻawina ka mea a mākou i aʻo ai. Ua puka mai ia mai loko mai o nā lāʻau umu ahi, microstructure scans, a me ka nānā hou ʻana i ke kumu kumu i ka wā i hāʻule ai ka mānoanoa 0.3% ma 1,185°C a i ʻole ka ulu ʻana o ka palaoa i ka wā hoʻomaha hoʻoheheʻe nitrogen-diluted.
ʻAʻole hiki ke kūʻai ʻia ka mana o ke kiʻi wela—no nā Superalloys
ʻO ka hapa nui o ka hāʻule ʻana i ka sintering o nā laina hale hana metala pauka e hoʻi i ka wela wela—ʻaʻole nā palena o nā lako. ʻO ka hoʻokaʻawale ʻana he 15°C i ka manawa paʻa kiʻekiʻe e hoʻololi i ka puʻunaue intergranular phase o AMS 5387 e ʻoki i ke ola luhi e 37% i loko o nā hale pahu piston pump cylinder. Hoʻohana mākou i nā kapuahi lua molybdenum-heated me nā manaʻo thermocouple manawa maoli ma ʻekolu kūlana radial no ka ukana. ʻIke koʻikoʻi: ka nui o ka ramp ma lalo o 3°C/min ma lalo o 600°C e pale i ka puhi ʻana o ka mea hoʻopili; ma luna o 900 ° C, hoʻopaʻa mākou no 45 mau minuke-ʻaʻole 60-e pale i ka hoʻoheheʻe ʻana o ka cobalt me ka mālama ʻana i ka ≥98.2% theoretical density. ʻAʻole kēia ka manaʻo. ʻO ia ka ʻaoʻao i hala i ka ASTM B243 tensile validation ma 92 mau ʻāpana.
ʻO ka maʻemaʻe o ka lewa e kuhikuhi pololei i ka pono o ka ʻili—a me ka hiki ke hana
ʻOi aku ka mea nui o ka waihā ma mua o ka holo kinoea holoʻokoʻa. Ke nānā mau nei mākou i ka pae hau H₂—ʻaʻole ka hoʻopaʻa ʻana i loko wale nō. Ua hōʻike ʻia nā nozzles cobalt alloy a kekahi mea kūʻai aku i ka micro-pitting ma hope o ka mālama ʻana i ka wela. Ua hōʻike ʻia ma ka noiʻi ʻana i ka hydrogen inlet ma 99.99% ka maʻemaʻe—akā, ua hoʻokomo ʻia ka wahi hau ma -42°C i ka mahu wai i hoʻopaʻa ʻia i nā palena o ka nickel-waiwai i ka wā sintering. Pane: hoʻohui i ka cryogenic trapping a hoʻopaʻa ʻia ka wahi hau i -65°C. ʻO ka hopena: ua hāʻule ka roughness surface (Ra) mai ka 1.8 µm a i ka 0.6 µm pre-machining, e ʻoki ana i ka manawa pōʻai CNC e 22%. No nā mea hao hao a me nā mea kila kuhiliʻole, hoʻololi mākou i ka amonia dissociated me <5 ppm O₂—hōʻoia ʻia i kēlā me kēia hola ma o ka sensor zirconia. ʻAʻohe ʻokoʻa.
Pono e hoʻohālikelike i ka Geometry a me ka Density Green—ʻAʻole i hoʻonui ʻia
ʻOi aku ka maikaʻi o ke kani ʻana o ka ʻōmaʻomaʻo kiʻekiʻe—a hiki i ka paʻi ʻana. Hoʻopili mākou i ka ʻōmaʻomaʻo ʻōmaʻomaʻo ma 62-65% no nā ʻāpana T800 i lōʻihi ma mua o 120 mm. No ke aha mai? Ma muli o ka emi ʻole ʻana o nā hiʻohiʻona paʻakikī-e like me nā mea i loko o nā kumu winch kaʻa ʻenehana-no ka 0.18 mm kakaka i 300 mm ka lōʻihi inā ʻoi aku ka ʻōmaʻomaʻo ma mua o 66%. ʻO kā mākou hoʻoponopono: ʻāpana hoʻouka ʻana i nā pā me nā pine kākoʻo i kālai ʻia. Noho nā ʻāpana lahilahi ma luna o nā kū seramika haʻahaʻa; ʻO nā kumu mānoanoa e kau ma luna o nā pads silicon carbide kiʻekiʻe. Ua hāʻule ka hoʻololi ʻana mai ±0.32% a i ±0.07%. Bonus: ua hoʻonui ʻia ka hoʻonui ʻana o ka umu ahi i ka 18% no ka mea ua hoʻopau mākou i ka hoʻoponopono post-sinter.
ʻO ka nānā ʻana i ka manawa ʻoiaʻiʻo e paʻi i ka nānā ʻana ma hope o ke kaʻina hana i kēlā me kēia manawa
Ua ho'ōki mākou i ka hilinaʻi ʻana i ka nānā ʻana i nā mea hoʻohālike ma hope o ka hoʻāʻo ʻana o ka hydrostatic hoʻāʻo ʻana i kahi ʻāpana o nā kino valve kaomi ma 410 bar - ʻoiai ke hala i ka nānā ʻana CMM. Ke kumu kumu: ʻike ʻia ka porosity kokoke i ka radii kūloko i hala ʻia e ke ana Archimedes. I kēia manawa, hānai ʻia kēlā me kēia holo sintering i ka ʻikepili i loko o kā mākou ʻōnaehana SinterTrack ponoʻī. ʻike nā mea ʻike pohō nui i ka pau ʻana o ke ahi i loko o ± 0.8 kekona; kiʻi kiʻi kiʻi infrared palapala hoʻololi emissivity ili e hōʻike ana i ka coalescence palaoa mua. Hoʻomaka ka hoʻomaka ʻana i ka hoʻopaʻa ʻana a me ka nānā ʻana inā ʻae kekahi ʻāpana ma mua o nā palena mana i hoʻopaʻa ʻia e ka helu helu—helu ʻia no kēlā me kēia papa waiwai, ʻaʻole no ka umu. Ua hōʻemi kēia i nā ʻāpana like ʻole mai 1.4% a i 0.23% i loko o 18 mahina.
ʻAʻole pili ka Optimization i hoʻokahi ʻāpana—E pili ana i nā hoʻoholo pili
ʻO ka hoʻopaʻa ʻana i ka holomua o ka hale hana pauka e pili ana i ka pili ʻana o ka lewa, ka mahana, ka manawa, a me ka ʻāpana geometry - ʻaʻole ke ʻano o kēlā me kēia hana hoʻokahi. ʻO ka 5°C kiʻekiʻe ka wela kiʻekiʻe e hoʻomaikaʻi i ka paʻakikī akā e hoʻonui i ka hoʻoheheʻe ʻana o ka ʻili ke ʻole ka hoʻomaʻemaʻe hydrogen i ka manawa like. ʻO ka hoʻoluʻu wikiwiki e hoʻomaikaʻi i ka paʻakikī akā kono i nā microcracks ke ʻole e hāʻule iki ka ʻōmaʻomaʻo. Ma QINGDAO QIANGSENYUAN, mālama mākou i ka sintering ma ke ʻano he ʻōnaehana hoʻopaʻa ʻia: hoʻoponopono i ka ʻikepili o ka pauka e komo mai ana (ka nui o ka ʻāpana D50, ka ʻike o ka oxygen, ke kahe kahe) e hoʻoponopono pololei i nā setpoints umu ma mua o ka hoʻouka ʻana. Kaʻana like mākou i kēia loiloi-ʻaʻole nā hopena wale nō-me nā mea kūʻai aku i ka wā o ka loiloi GD&T. No ka mea, i ka wā e ola ai kāu hale pahū i 20,000 mau kaʻina ma 350 bar, ʻaʻole hana ka sintering. ʻO ia ka hoʻokō ʻaelike metallurgical.
