ʻAʻole hāʻule nā ʻāpana ʻoihana hana kiʻekiʻe mai ka hoʻolālā maikaʻi ʻole - hāʻule lākou i ka wā i kuhi hewa ʻole ai ke ʻano o ka waiwai, ka mana o ka nui, a me nā ala haʻahaʻa hana. ʻO ia ke kumu o ke alakaʻi ʻana i ka ʻōnaehana hydraulic OEMs, nā mea hoʻohui ʻaila ʻaila, a me nā mea hana pahū pololei e hoʻonui i ka hoʻopololei maʻamau a i ʻole ka mīkini bar-stock no hale hana kila pauka nā hāʻina—ʻoi loa ke koi ʻia nā ʻāpana he> 1200 MPa ikaika tensile, ʻaʻahu i ke kūpaʻa ma 500°C, a i ʻole porosity ʻole ma nā ʻāpana koʻikoʻi.
Ua ʻike mua mākou iā ia: ua hoʻololi ka mea hana pāpaʻi ʻEulopa i nā hale pahu one-cast cylinder me ka PM-processed 4605 stainless steel-a ʻoki ʻia nā hemahema o ke kahua e 73% ma luna o 18 mau mahina. No ke aha mai? ʻAʻole no ka mea he "hou," akā no ka hāʻawi ʻana i ka microstructural uniformity ʻaʻole hiki ke hoʻohālikelike ke kaʻina hana ingot. Noho maikaʻi a isotropic nā palena o ka palaoa. Mālama ʻia ka puʻunaue Carbide. A emi iho? Hiki ke wānana i loko o ± 0.02 mm—ʻoiai ma nā hale 320-mm-diameter me nā ala hoʻoluʻu o loko a me ka 0.8-µm Ra i hoʻopau ʻia.
ʻOi aku ka nui o kēlā kiʻekiʻe o ke kūpaʻa ma mua o ka paʻi a me ka umu sinter. Pono ia i ka hoʻohui kūʻokoʻa ma waena o ʻekolu mau papa hiki ʻole ke kūʻai ʻia: hōʻoia ʻia ka pauka makaʻala, pani-loop thermal-mechanical process control, a me ka metrology-backed validation-ʻaʻole wale ma ka nānā hope ʻana, akā i kēlā me kēia manawa mai ka palapala palapala ʻōmaʻomaʻo a i ka HIP post-treatment. Ma QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., ʻaʻole kēia he kumu. ʻO kā lākou mea hoʻokō ISO ma Qingdao e holo ana i ka hana kila PM holoʻokoʻa-mai nā pauka i hoʻohui ʻia i mua o ke kinoea (e laʻa, PH13-8Mo, Custom 465®, a me AMS 5387-compatible cobalt-steel hybrids) ma o ka hoʻopili ʻana mehana, sintering vacuum, hot isostatic continuing ma lalo o ka hale hoʻokahi (HIP).
Eia ka mea e hoʻokaʻawale ai i kā lākou ala mai nā hale kūʻai "PM-hiki" maʻamau:
- Hoʻomaka ka traceability ma mua o ke komo ʻana o ka pauka i loko o ka pahu: Ke lawe nei kēlā me kēia pūʻulu i ka CoA piha me ka nānā ʻana o OES + LECO, me ka hōʻoia SEM/EDS o ka maʻiʻo oxide a me ka hāʻawi ʻana i ka nui o nā ʻāpana (D10/D50/D90 i hoʻopaʻa ʻia no ASTM B822).
- Ana ʻia ka pono o ka ʻāpana ʻōmaʻomaʻo—ʻaʻole i manaʻo ʻia: Hōʻoia ka nānā ʻana i ka CT i nā ʻano ʻemi ma mua o ka sintering; 'o ka ho'ololi 'ana i ke ka'ina hana, 'a'ole ka hana lima.
- ʻAʻole ʻo Sinter-HIP i ke kaʻina-he synergistic: Hoʻohana ko lākou umu ʻelua keʻena i ke kaomi ʻāpana nitrogen i ka wā o ka sintering, a laila hoʻololi pololei i ka argon HIP ma 1150°C/150 MPa—e hoʻopau ana i ka pilikia o ka oxidation a me ka hiki ke kokoke-theoretical density (99.8% TD) i nā geometries paʻakikī e like me nā kino valve multi-port.
- Hana ʻia ka paʻa ʻana o ke ana-ʻaʻole i uku ʻia: Hoʻohana lākou i ka annealing hoʻomaha hoʻomaha * ma hope o * HIP akā * ma mua o ka hoʻopau ʻana i ka mīkini, me ka hoʻohana ʻana i nā ʻaoʻao wela manawa i hōʻoia ʻia i ke koena o ke koʻikoʻi palapala palapala (XRD + hole-drilling). Ka hopena: noho ka warpage ma lalo o 0.015 mm ma nā lima lima piston 200-mm ka lōʻihi—ʻoiai ma hope o ka wili ʻana o 3-axis o nā awāwa sila a me nā awa radial.
Hiki i kekahi ke hoʻopaʻapaʻa ʻoi aku ke kumukūʻai o ke kila PM ma mua o ka hoʻolei kālā. Akā i ka wā i ʻimi ai mākou i ke kumukūʻai holoʻokoʻa no ka hale wai hydraulic valve Tier-1 (ASTM F2997 Grade 3), ua hāʻawi ke ala PM i ka 22% haʻahaʻa haʻahaʻa o ke kumukūʻai ola-ʻaʻole mai nā mea ʻoi aku ka liʻiliʻi, akā mai ka ʻōpala i hoʻopau ʻia (hua hoʻolei: 68%; PM yield: 94%), hōʻemi ʻia nā hana lua (ʻaʻohe wehe ʻana i ka puka, ʻaʻole hoʻonui i ke ola o ka weld, 8), 14,600 mau hola i nā rigs hoʻokolohua kiʻekiʻe.
ʻAʻole ʻenehana ka bottleneck maoli - ʻo ia ka maʻalahi o ka noi. Loaʻa iā mākou nā kelepona i kēlā me kēia pule mai nā mea ʻenekinia e nīnau ana: "Hiki iā PM ke mālama i kā mākou 1200-bar pressure spike?" a i ʻole "E paʻa mau anei ka PM i hoʻokumu ʻia ma T800 ma hope o ka nitriding?" ʻOi aku ka liʻiliʻi o ka pane i ka pauka a ʻoi aku ka paʻa o ke kaulahao holoʻokoʻa - mai ke koho ʻana i ka pauka morphology a hiki i ka HIP ramp rate - e pili pū me kāu envelope hana. Eia kekahi laʻana: hāʻawi nā pauka spherical i ka ʻōmaʻomaʻo ʻoi aku ka maikaʻi akā ʻoi aku ka maikaʻi o ke kahe ʻana ma nā ʻāpana pā lahilahi; Hoʻonui ka hoʻopiha piha ʻana i nā mea kikoʻī ʻole akā hoʻonui i ka pilikia o ka ejection. ʻAʻohe palapala kikoʻī āpau. Aia wale nō ke kaʻina hana kaʻina hana pōʻaiapili.
ʻO ia ke kumu e hoʻokomo ai ʻo QINGDAO QIANGSENYUAN i nā metallurgists-ʻaʻole wale i nā mea kūʻai aku-i nā loiloi ʻenekinia mua. E hōʻailona lākou i nā paio GD&T ma mua o ka hoʻomaka ʻana o nā mea hana (e laʻa. E paipai lākou i nā kaʻina lapaʻau wela i hōʻoia ʻia ma nā mea like AMS 5387-ʻaʻole nā pōʻaiapili "stainless steel" maʻamau. A e kaʻana like lākou i nā hōʻike CMM maka, nā lāʻau HIP, a me nā kiʻi metallography - ʻaʻole wale nā pepa i hala.
Ke nānā aku nei i mua, ʻaʻole ka hoʻololi ikaika loa i nā pauka maikaʻi a i ʻole nā koi kiʻekiʻe - aia ia i ka ʻike hana hybrid. E noʻonoʻo: ʻo nā cores i hoʻopaʻa ʻia me nā ʻāina e hoʻopaʻa ʻia me ka mīkini, nā hale i mālama ʻia e ka HIP me nā ana kānana i hoʻopili ʻia, a i ʻole nā billet i kālai ʻia e PM e hana ana i ka simulation solidification kuhikuhi ma mua o ka paʻi mua ʻana. ʻAʻole kēia mau manaʻo R&D. He mau papahana ola lākou e holo nei i kēia lā ma nā keʻena e like me QINGDAO QIANGSENYUAN's—kahi e hoʻokō ai ka mana o ka hale hana hao pauka i ka hoʻopaʻi machining, ʻaʻole ma ke ʻano he lawelawe ʻokoʻa, akā ma ke ʻano he hopena ʻenehana hoʻokahi.
Inā pono e hoʻopuka kāu valve kaomi kiʻekiʻe, winch shaft, a i ʻole hale pahū i ka hana hou ʻana - ʻaʻole e hui wale i kahi kiʻi - ʻaʻole ʻoe e koho i kahi mea hoʻolako. Ke koho nei ʻoe i kahi hoa hana kaʻina hana ʻoi aku ka ikaika o ka metallurgical i kāu ʻaoʻao pilikia hana. Hoʻomaka ia me ka nīnau ʻana i nā nīnau kūpono - ʻaʻole e pili ana i ke kumukūʻai no ka kilokani, akā e pili ana i ka hoʻihoʻi hou ʻana o ka ʻōmaʻomaʻo, nā moʻolelo hōʻoia o ka pōʻai HIP, a pehea lākou e mālama ai i ka maʻi oxygen out-of-spec i ka nui o ka pauda. No ka mea i loko o nā noi koʻikoʻi, noho ka palena no ka hewa i ka microstructure-ʻaʻole ka palapala kūʻai.
