I kēia manawa, ke ulu wikiwiki nei ka ʻoihana hana mīkini o Kina, a ua hoʻohana nui ʻia kekahi mau mea paʻakikī e ʻoki ʻia i ka ʻoihana waiwai a me ka ʻoihana mīkini pololei.I mea e hoʻokō ai i nā pono hoʻomohala o ka ʻoihana hana mīkini hou, pono mākou e hoʻohana i kekahi mau mea hana me ka ikaika kiʻekiʻe a me ka paʻakikī maikaʻi.No laila, hoʻohana mālie ʻia nā mea hana paʻakikī i ka ʻoihana hana mīkini.Ke kālele nei kēia ʻatikala i ka hoʻohana ʻana i nā mea paahana paʻakikī i ka mīkini ma ka nānā ʻana i ka hoʻomohala ʻana i nā mea paʻahana paʻakikī, i mea e hāʻawi ai i ka ʻike like ʻana no nā hoaaloha ma ka ʻoihana like.
Me ka hoʻomohala wikiwiki ʻana o ka ʻenehana hana hou a me ka hoʻokūkū ikaika o ka mākeke, ke hoʻonui nei nā koi o ka ʻoihana hana mīkini no nā ʻāpana mīkini hana, ʻoi aku ka nui o ka hana ʻana o nā ʻāpana mechanical.No laila, ua puka mālie nā mea hou me nā waiwai like ʻole i loko o ka hui.ʻAʻole wale kēia mau mea hou i mea paʻakikī i nā mea hana machining maʻamau, akā paʻakikī nō hoʻi e hana.I kēia manawa, ua lilo nā mea hana ʻoki kiʻekiʻe i ke kī i ka hoʻomohala ʻana i ka ʻoihana hana mīkini, a ua hoʻohana ʻia nā mea paʻakikī paʻakikī i ka hana ʻenehana hou.
1. Ka moʻolelo hoʻomohala o nā mea paʻahana paʻakikī
I nā makahiki 1950, ua lawe ka poʻe ʻepekema ʻAmelika i ke daimana synthetic, ka paʻa, a me ka pauka boron carbide ma ke ʻano he mea maka, hoʻololi ʻia ma lalo o ke kiʻekiʻe o ka mahana a me ke kaomi, a ua hoʻopaʻa ʻia ka poli polycrystalline ma ke ʻano he mea nui o ka mea hana.Ma hope o nā makahiki 1970, ua hoʻomohala mālie nā kānaka i nā mea pepa i hana ʻia e ka hui ʻana i ke daimana a me ka carbide cemented, a i ʻole boron nitride a me ka carbide cemented.Ma kēia ʻenehana, ua manaʻo ʻia ka carbide cemented e like me ka substrate, a ua hana ʻia kahi papa daimana ma ka ʻili o ka substrate ma ke kaomi ʻana a i ʻole ka sintering.ʻO ka daimana ma kahi o 0.5 a 1 mm ka mānoanoa.ʻAʻole hiki i ia mau mea ke hoʻomaikaʻi wale i ka pale ʻana o nā mea, akā hoʻoponopono maikaʻi hoʻi i ka pilikia ʻaʻole maʻalahi nā mea kuʻuna i ka weld.Ua hoʻolaha kēia i ka mea paʻahana paʻakikī e komo i ka pae noi.
2. Hoʻohana i nā mea hana paʻakikī i ka mīkini
(1) Hoʻohana i nā mea hana daimana kristal hoʻokahi
Hoʻokaʻawale ʻia ke daimana aniani hoʻokahi i ke daimana synthetic a me ke daimana maoli.ʻO ka maʻamau, inā hoʻohana ʻia ke daimana aniani hoʻokahi e hana i ka mea hana, pono ia e koho i ke daimana me ka nui o ka nui o ka nui, ʻoi aku ka nui ma mua o 0.1 g a ʻoi aku ka lōʻihi o ke anawaena ma mua o 3 mm.I kēia manawa, ʻo ke daimana maoli ka mea paʻakikī loa i nā minerala.ʻAʻole wale ka maikaʻi o ka pale ʻana, akā ʻoi aku ka ʻoi loa o ka mea hana i hana ʻia.I ka manawa like, loaʻa iā ia ke kūpaʻa adhesion kiʻekiʻe a me ka conductivity thermal haʻahaʻa.He laumā a maikaʻi ka mea hana i hana ʻia.I ka manawa like, ʻo ka mea hana i hana ʻia i ke daimana maoli he maikaʻi loa ka lōʻihi a me ke ola lawelawe lōʻihi.Eia kekahi, i ka wā e ʻoki ai no ka manawa lōʻihi, ʻaʻole ia e pili i ka hana ʻana o nā ʻāpana.Hiki i ka conductivity thermal haʻahaʻa ke loaʻa ka hopena maikaʻi i ka pale ʻana i ka deformation o nā ʻāpana.
He nui nā pōmaikaʻi o ke daimana maoli.ʻOiai he kumukūʻai kēia mau mea maikaʻi, hiki iā lākou ke hoʻokō i nā koi o nā hana ʻoki kiʻekiʻe kiʻekiʻe a hoʻohana nui ʻia i ka ʻoki pololei a me ka ʻoki ultra-precision.E like me ka hoʻohālikelike ʻana i nā aniani e hoʻohana ana i nā reactors atomic a me nā ʻenehana holomua ʻē aʻe, a me nā gyroscopes hoʻokele honua i hoʻohana ʻia ma nā missiles a i ʻole rockets, a me kekahi mau ʻāpana wati, nā mea metala, a me nā mea ʻē aʻe, ua hoʻohana i kēia ʻenehana.
(2) Hoʻohana i nā mea hana daimana polycrystalline
Kapa ʻia ka daimana polycrystalline i ka daimana sintered.ʻO ka hoʻohana ʻana i ka daimana polycrystalline no nā metala e like me ka cobalt, ma o ke ʻano kiʻekiʻe o ka wela a me nā kūlana kiʻekiʻe, e hana i ka nui o ka polycrystalline polycrystalline i hoʻokahi, pēlā e hana ai i kahi mea hana polycrystalline.ʻOi aku ka paʻakikī o ke daimana polycrystalline ma mua o ka daimana maoli.Eia nō naʻe, ua hana ʻia ia e nā ʻano pauka daimana, ʻaʻohe hihia he ʻokoʻa ka ikaika a me ka paʻakikī o nā mokulele aniani.I ka wā e ʻoki ai, ʻo ka ʻoki ʻoki i hana ʻia me ke daimana polycrystalline he kūʻē kiʻekiʻe loa i ka pōʻino ʻino a me ke kūpaʻa maikaʻi.Hiki iā ia ke mālama i ka ʻoki ʻoki no ka manawa lōʻihi.I ka manawa like, hiki iā ia ke hoʻohana i ka wikiwiki ʻoki wikiwiki i ka wā e mīkini ai.Hoʻohālikelike ʻia me nā mea hana carbide cemented WC, ʻoi aku ka lōʻihi o ka lawelawe ʻana o nā mea hana daimana polycrystalline, maʻalahi ke komo ʻana i nā mea synthetic a me nā kumu kūʻai haʻahaʻa.
(3) Ke noi ʻana i ka daimana CVD
Hoʻopili ʻia ka mea hana o ka daimana CVD ma lalo o ke kaomi haʻahaʻa, ʻo ia ka ʻokoʻa nui loa mai ka ʻenehana PSC kuʻuna a me ka ʻenehana PDC.ʻAʻole i loaʻa i ke daimana CVD kekahi ʻāpana catalyst.ʻOiai ua like ia me ke daimana maoli i kekahi mau waiwai, ua like nō ia me ke daimana polycrystalline i nā mea, ʻo ia hoʻi, ua hoʻonohonoho pono ʻia nā ʻano huaʻai, ʻaʻohe o ka brittle cleavage ili, a loaʻa nā waiwai like ma waena o nā papa.Ke hoʻohālikelike ʻia me nā mea hana i hana ʻia e ka ʻenehana kuʻuna, ʻoi aku ka maikaʻi o nā mea hana i hana ʻia e ka ʻenehana daimana CVD, e like me ke ʻano o ka mea hana paʻakikī, ke kumu kūʻai haʻahaʻa, a me nā lau he nui o ka maka hoʻokahi.
(4) Hoʻohana i ka polycrystalline cubic boron nitride
ʻO ka polycrystalline cubic boron nitride (PCBN) he mea hana paʻakikī maʻamau, ʻoi aku ka nui o ka hoʻohana ʻana i ka mīkini.ʻO ka mea hana i hana ʻia me kēia ʻenehana he ʻoi aku ka paʻakikī a me ke kūpaʻa ʻaʻahu.ʻAʻole hiki ke hoʻohana wale ʻia i nā mahana kiʻekiʻe, akā loaʻa nō hoʻi ke kūpaʻa corrosion maikaʻi a me ka conductivity thermal.Ke hoʻohālikelike ʻia me nā mea hana PCD a me PDC, ʻoi aku ka haʻahaʻa o nā mea hana polycrystalline cubic boron nitride i ka pale ʻana i ka lole, akā hiki ke hoʻohana maʻamau i 1200 ℃ a hiki ke kū i kekahi ʻino kemika!
I kēia manawa, hoʻohana nui ʻia ka polycrystalline cubic boron nitride i ka hana ʻana o nā kaʻa, e like me nā ʻenekini kaʻa, nā kumu hoʻoili, a me nā disc brake.Eia kekahi, ma kahi o hoʻokahi hapalima o ka hana ʻenehana kaumaha e hoʻohana pū i kēia ʻenehana.I nā makahiki i hala iho nei, me ka hoʻomohala ʻana o ka ʻenehana kamepiula a me ka ʻenehana mīkini mīkini CNC, ua hoʻonui nui ʻia ka noi ʻana o ka polycrystalline cubic boron nitride, a me ka hoʻokō ʻana i nā manaʻo machining holomua e like me ka ʻoki kiʻekiʻe-wikiwiki, ka huli ʻana ma kahi o ka wili, ka mea paahana. Ua ulu mālie nā mea o ka polycrystalline cubic boron nitride i mea koʻikoʻi i ka hana hoʻohuli hou.
3. Hōʻuluʻulu manaʻo
ʻO ka hoʻohana ʻana i nā mea hana paʻakikī i ka mīkini ʻaʻole e hoʻomaikaʻi wale i ka maikaʻi a me ka maikaʻi o ka mīkini, akā he hana koʻikoʻi nō hoʻi i ka hoʻomohala ʻana i ka ʻoihana hana mīkini.No laila, i mea e hoʻoikaika ai i ka hoʻomohala ʻana i ka ʻoihana hana mīkini, pono e hoʻoikaika mau i ka noiʻi ʻana i nā mea paʻakikī paʻakikī, e hoʻomaopopo pono i ka ʻike e pili ana i nā mea hana paʻakikī, a hoʻoikaika i ka hana noi, ʻaʻole wale e hoʻomaikaʻi i ka maikaʻi o ka. nā limahana, akā, e hoʻoikaika i ka noi ʻana o ka ʻepekema a me ka ʻenehana i ka hoʻomaikaʻi ʻana i nā mea paʻahana paʻakikī, i ʻike ai i ka ulu ʻana o ka leapfrog o ka ʻoihana hana mīkini.
Ka manawa hoʻouna: Jun-03-2019