No ke aha mākou i manaʻo ai he mea paʻakikī ka titanium alloy i ka mīkini? Ma muli o ka nele o ka ʻike hohonu i kāna ʻano hana a me nā hanana.
1. Nā Kūlana Kino o ka Mīkini Titanium
ʻOi aku ka kiʻekiʻe o ka ikaika o ka hana ʻana o ka titanium alloy ma mua o ke kila me ka paʻakikī like, akā ʻoi aku ka paʻakikī o ke ʻano kino o ka hoʻoili ʻana i ka titanium alloy ma mua o ka hoʻoili ʻana i ke kila, ka mea e hoʻohālikelike ai i nā pilikia nui.
He haʻahaʻa loa ka conductivity thermal o ka hapa nui o nā alloys titanium, ʻo 1/7 wale nō o ke kila a me 1/16 o ka alumini. No laila, ʻaʻole e hoʻoneʻe koke ʻia ka wela i hana ʻia i ke kaʻina hana o ka titanium alloy i ka mea hana a lawe ʻia paha e nā ʻāpana, akā e hōʻiliʻili ʻia i ka ʻoki ʻana, a hiki ke kiʻekiʻe ka mahana i hana ʻia e like me 1000 ° C. ʻoki ʻana i ka ʻaoʻao o ka mea paahana e ʻaʻahu, māwae a make koke. Ke kūkulu ʻia ʻana o ka lihi, ka ʻike wikiwiki ʻana o nā ʻaoʻao kahiko, a laila e hoʻonui i ka wela ma ka ʻāpana ʻoki, e hoʻopōkole ana i ke ola mea hana.
ʻO ka wela kiʻekiʻe i hana ʻia i ka wā o ke kaʻina hana e hoʻopau ai i ka pono o ka ʻili o nā ʻāpana alloy titanium, ka hopena i ka emi ʻana o ka pololei geometric o ka ʻāpana a me kahi ʻano hana paʻakikī e hōʻemi nui i kona ikaika luhi.
Hiki ke kōkua ka elasticity o nā alloys titanium no ka hana ʻāpana, akā i ka wā o ka ʻoki ʻana, ʻo ka deformation elastic o ka mea hana ke kumu nui o ka haʻalulu. ʻO ke kaomi ʻoki ʻana i ka mea hana "elastic" e haʻalele i ka mea hana a hoʻihoʻi hou, i ʻoi aku ka nui o ka paio ma waena o ka mea hana a me ka mea hana ma mua o ka hana ʻoki. ʻO ke kaʻina hana friction e hoʻoulu i ka wela, kahi e hoʻonui ai i ka pilikia o ka conductivity thermal maikaʻi ʻole o nā alloys titanium.
ʻOi aku ka koʻikoʻi o kēia pilikia i ka wā e hoʻomaʻamaʻa ai i nā ʻāpana ʻāpana lahilahi a i ʻole ke apo i hiki ke hoʻololi ʻia. ʻAʻole ia he hana maʻalahi ka hana ʻana i nā ʻāpana ʻāpana lahilahi me ka titanium alloy e like me ka pololei o ke ana i manaʻo ʻia. No ka mea i ka wā e hoʻokuʻu ʻia ai ka mea hana e ka mea paahana, ua ʻoi aku ka deformation kūloko o ka pā lahilahi ma mua o ka laulā elastic e hana i ka deformation plastic, a me ka ikaika a me ka paʻakikī o ka ʻokiʻoki e piʻi nui. I kēia manawa, ʻoi aku ka kiʻekiʻe o ka mīkini ma ka wikiwiki o ka ʻoki ʻana i hoʻoholo mua ʻia, kahi e alakaʻi hou ai i ke kapa ʻoi o ka mea hana.
ʻO "Heat" ka "culprit" no ka paʻakikī o ka hana ʻana i nā alloys titanium!
2. ʻIke ʻenehana no ka hana ʻana i nā alloys titanium
Ma ke kumu o ka hoʻomaopopo ʻana i ke ʻano hana o nā alloys titanium, i hui pū ʻia me ka ʻike i hala, ʻo ka ʻike kumu nui no ka hana ʻana i nā alloys titanium penei:
(1) Hoʻokomo me ka geometry kihi kūpono e hōʻemi i ka ikaika ʻoki, ʻoki i ka wela a me ka deformation o ka mea hana.
(2) E mālama i kahi hānai mau e pale i ka paʻakikī o ka mea hana. Pono ka mea hana ma ke kūlana hānai i ka wā o ka ʻoki ʻana. He 30% ka nui o ka oki radial o ka radius i ka wā wili.
(3) Hoʻohana ʻia ka wai ʻoki kiʻekiʻe a me ke kahe nui e hōʻoia i ka paʻa ʻana o ka wela o ke kaʻina hana machining a pale i ka ʻili o ka mea hana mai ka degeneration a me ka pōʻino o ka mea hana ma muli o ka wela nui.
(4) E mālama i ka ʻoki ʻoki ʻana o ka ʻili i ka ʻoi, ʻo nā pahi blunt ke kumu o ke kūkulu ʻana o ka wela a me ka ʻaʻahu, hiki ke alakaʻi maʻalahi i ka hemahema o nā pahi.
(5) ʻO ka hana ʻana i ke kūlana palupalu o ka titanium alloy e like me ka hiki, no ka mea e lilo ana ka mea paʻakikī i ka hana ma hope o ka paʻakikī, hoʻomaikaʻi ka mālama wela i ka ikaika o ka mea a hoʻonui i ka ʻaʻahu o ka maka.
(6) E hoʻohana i ka radius ihu nui a i ʻole chamfer e ʻoki i ka mea hiki i ka ʻoki ʻoki. Hiki i kēia ke hoʻemi i ka ikaika ʻoki a me ka wela i kēlā me kēia wahi a pale i ka haki kūloko. I ka wili ʻana i nā alloys titanium, ma waena o nā ʻāpana ʻokiʻoki, ʻoi aku ka ikaika o ka wikiwiki o ka ʻoki ʻana i ke ola mea hana vc, a ukali ʻia e ka nui o ka ʻoki radial (hohonu milling) ae.
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3. Hoʻoholo i nā pilikia hana titanium e hoʻomaka ana mai ka maka
ʻO ka ʻaʻahu o ka lau i ka wā o ka hana ʻana o ka titanium alloy, ʻo ia ka lole kūloko o ke kua a me mua ma ka hohonu o ke kuhikuhi ʻoki, ʻo ia ka mea ma muli o ka papa paʻakikī i waiho ʻia e ka hana mua. ʻO ka hopena kemika a me ka hoʻopuehu ʻana ma waena o ka mea hana a me ka mea hana ma kahi mahana hana ma mua o 800 ° C ʻo ia kekahi o nā kumu no ka hoʻokumu ʻana i ka lole groove. No ka mea, i ka wā o ka hana ʻana, ʻo nā molekala titanium o ka mea hana e hōʻiliʻili i mua o ka maka, a ua "welded" i ka lau ma lalo o ke kiʻekiʻe kiʻekiʻe a me ka wela kiʻekiʻe, e hana ana i ka lihi kūkulu ʻia. Ke ʻili ka lihi i kūkulu ʻia mai ka ʻoki ʻoki ʻana, lawe ia i ka uhi carbide o ka mea hoʻokomo, no laila pono ka mīkini titanium i nā mea hoʻokomo kūikawā a me nā geometries.
4. ʻO ke ʻano mea hana kūpono no ka mīkini titanium
ʻO ka manaʻo o ka hana ʻana o ka titanium alloy he wela. ʻO ka nui o ka wai ʻokiʻoki kiʻekiʻe e pono e hoʻopuʻi ʻia ma ka ʻoki ʻoki i ka manawa kūpono a pololei e wehe koke ai i ka wela. Aia nā hale kūʻokoʻa o nā mea ʻoki milling i hoʻohana kūikawā ʻia no ka hana ʻana o ka titanium alloy ma ka mākeke.
Ka manawa hoʻouna: ʻAukake-09-2023
