ʻO ke kūlana o kēia manawa a me ka hoʻomohala ʻana o ka lawe kila

Hoʻohana nui ʻia nā bearings i nā mīkini mining, nā mea mīkini pololei, nā mea hao, nā mea kaumaha a me nā kaʻa kiʻekiʻe kiʻekiʻe a me nā kīʻaha mea nui ʻē aʻe, ka mana makani makani, kiʻekiʻe kiʻekiʻe rail bullet train a me ka aerospace a me nā ʻoihana e puka mai ana. ʻo ka nui o nā bearings haʻahaʻa a me nā bearings liʻiliʻi a me ka liʻiliʻi, e hōʻike ana i ke koena haʻahaʻa a me ka hemahema kiʻekiʻe.

China high-speed railway passenger car special matching wheelset bearings all need to be imported from abroad.In nā kī bearings i hoʻohana 'ia i ka aerospace, kiʻekiʻe-wikiwiki kaʻaahi, kiʻekiʻe-hopena kaʻa a me nāʻoihana'ē aʻe mahinaʻai, aia ka nui ākea ma waena o Kina bearings a holomua ma ke ano o ka lawelawe ola, reliability, Dn waiwai a me ka lawe ana i ka hiki. No ka laʻana, ke ola lawelawe o nā haole kaʻa hoʻouna bearings ma ka liʻiliʻi loa 500,000 kilomika, oiai ke ola lawelawe o ka home like bearings ma kahi o 100,000 kilomika, a me ka hilinaʻi a me ʻilihune ke kūpaʻa.

1. Lewa

Ma ke ʻano he kumu nui o ka aero-engine, ke kūkulu ʻia nei ka lua o ka hanauna aero-engine me ka thrust ratio o 15-20 ma waho, i mākaukau e hui ʻia i loko o ka lima o ka hanauna fighter a puni 2020. I nā makahiki he 10 i hala, Ua hoʻomohala ʻo ʻAmelika Hui Pū ʻIa i ka lua-hanau hao hao no ka aero-engine, nona nā ʻano kila ʻelele he CSS-42L, he kila kila kūʻokoʻa ikaika kiʻekiʻe me 500 ℃ kūpaʻa, a me X30 (Cronidur30), he kila kila me 350 ℃ kū'ē.Ke hoʻomohala nei ʻo Kina i ka lua-hanauna bearing no ka aero-engine.

2. Na kaa

No nā bearings hub kaʻa, ua hoʻohana nui ʻia ka mua a me ka lua o ka hanauna hub bearings (ball bearings) ma Kina, aʻo ke kolu o ka hanauna hub bearings ua hoʻohana nui ʻia ma ʻEulopa. , hoʻokomo maʻalahi, ʻaʻohe hoʻololi, hoʻonohonoho paʻa a me nā mea ʻē aʻe. I kēia manawa, hoʻohana ka hapa nui o nā hiʻohiʻona i lawe ʻia ma Kina e hoʻohana i nā bearings hub ʻano māmā a hoʻohui ʻia.

3. Kaʻa kaʻa kaʻa kaʻa

I kēia manawa, nā bearings i hoʻohana ʻia i loko o nā kaʻa kaʻa kaʻa kaʻa nui o Kina i hana ʻia me ka electroslag remelting G20CrNi2MoA carburized steel. A ʻo nā haole i ka ultra kiʻekiʻe maʻemaʻe o ka lawe ʻana i ke kila (EP) kila hoʻoheheʻe ʻia a me ka hoʻoheheʻe ʻana i ka ʻenehana homogenization (IQ) kila, ola lōʻihi. ʻenehana kila (TF) kila, maikaʻi maikaʻi, a me ka ʻenehana hoʻomaʻamaʻa wela, ʻenehana hoʻomaʻamaʻa paʻakikī ʻili a me ka ʻenehana lubrication sealing holomua i hoʻohana ʻia i ka hana ʻana a me ka hana ʻana, pēlā e hoʻonui ai i ke ola lawelawe o ka halihali a me ka hilinaʻi. ʻAʻole haʻahaʻa wale ke kila, akā ʻo ke kumukūʻai ʻo 2000-3000 yuan / ton ʻoi aku ka kiʻekiʻe ma mua o ke kila degassing.I ka wā e hiki mai ana, pono ʻo Kina e hoʻomohala i ke kila degassing bearing me ka hoʻomaʻemaʻe ultra-kiʻekiʻe, ka maikaʻi maikaʻi, homogenization a me ka maikaʻi paʻa e hoʻololi i ka hoʻohana ʻana o ka electroslag bearing steel.

ʻO ka noiʻi a me ka hoʻomohala ʻana i ka wā e hiki mai ana no ka Bearing steel ma Kina

Hōʻike nui ʻia ma nā ʻano ʻehā:

1. Maʻemaʻe waiwai

Ma lalo o ka manaʻo o ka noʻonoʻo ʻana i ka hoʻokele waiwai, ua hoʻomaikaʻi hou ʻia ka maʻemaʻe o ke kila, ua hoʻemi ʻia ka ʻike o ka oxygen a me ka titanium i ke kila, a ʻo ka hapa nui o ka oxygen a me ka titanium i ka lawe kila ma lalo o 6 × 10-6 a me 15 × 10-. 6, kēlā me kēia.Hoʻemi ʻia ka ʻike a me ka nui o ka hoʻokomo ʻana i ke kila, a hoʻomaikaʻi ʻia ka hoʻoili like ʻana.

2. Hoʻomaʻemaʻe hui a homogenization

Ma o ka hoʻohana ʻana i ka hoʻolālā alloying a me ka hoʻokele ʻana a me ke kaʻina hoʻoluʻu hoʻomalu, e hoʻomaikaʻi hou ʻia ka like ʻole o nā inclusions a me nā carbide, ua hoʻemi ʻia a hoʻopau ʻia nā carbide reticulated a me banded, ua hoʻemi ʻia ka nui awelika a me ka nui o ka nui o ka nui, a me ka awelika o ka carbide. ʻoi aku ka liʻiliʻi ma mua o 1μ m. Hoʻomaʻemaʻe hou ʻia ka nui o ka palaoa o ka lawe ʻana i ke kila ma ka hoʻomaikaʻi ʻana i ka nui o ka palaoa o ka matrix structure.

3. E ho'ēmi i nā hemahema o ke kino haʻahaʻa

E hoʻemi hou i ka porosity waena, ka lua shrinkage waena a me ka hoʻokaʻawale ʻana o nā mea kikowaena i ka lawe kila, e hoʻomaikaʻi i ka like ʻole o ka hana haʻahaʻa.

4. ʻO ka paʻakikī kiʻekiʻe o ka lawe kila

Ua hoʻomaikaʻi ʻia ka paʻakikī o ka lawe ʻana i ke kila e ka hoʻohuihui hou ʻana, ka loiloi ʻana i ke kaʻina hana wela a me ka noiʻi kaʻina hana wela.(China Steel Research & Development Strategy Institute)

Hoʻokuʻu: nā mea kiʻi mai ka pūnaewele, kuleana kope i ka mea kākau kumu a pau, e like me ka hewa, e ʻoluʻolu e hoʻokaʻaʻike e holoi.