Pehea e koho pono ai i nā mea bearing

I ka hoʻolālā mīkini, ʻo nā bearings, ma ke ʻano he mau ʻāpana hoʻoili koʻikoʻi, ʻo kā lākou koho mea e hoʻoholo pololei i ka hana, ke ola a me ka hilinaʻi o nā lako. E wehewehe pono kēia ʻatikala i nā kumu koʻikoʻi o ke koho ʻana i nā mea bearing mai nā ʻano e like me nā koi mea, nā loina koho, nā ʻano hana, nā kūlana, a me ka nānā ʻana i nā hihia, a e ʻimi i nā hopena o ke koho pono ʻole ʻana i nā mea e kōkua i nā ʻenekinia a me nā mea hana ʻoihana i ka hoʻomaikaʻi ʻana i kā lākou mau hoʻolālā koho.

Nā Koina Kumu no nā Mea Hāpai

Pono nā mea hali e hoʻokō i nā ʻōkuhi hana multi-dimensional e hōʻoia i kā lākou hana paʻa ma lalo o nā kūlana hana paʻakikī:

1.High maemae a me ka haʻahaʻa kinoea

ʻO nā mea i hoʻokomo ʻole ʻia metala (e like me nā oxides a me nā nitrides) i loko o ke kila hali hiki ke hoʻoulu i ka nui o ke kaumaha, e alakaʻi ana i ka luhi spalling a i ʻole nā ​​​​microcracks. Hoʻemi ka ʻenehana hoʻoheheʻe hou i ka ʻike oxygen i lalo o 10ppm ma o ka vacuum deoxidation a me ka hoʻomaʻemaʻe lua, e hoʻonui nui ana i ke ola o ka mea.

2. Hoʻohuihui kemika like a me ka hoʻolaha carbide

Hiki i nā carbides wai i hoʻoheheʻe ʻia, nā carbides banded a me nā carbides pūnaewele ke hōʻemi i ke ola luhi o nā mea. No ka laʻana, ke hiki ka helu carbide banded i ka papa 3 a i ka 4, ua hoʻemi ʻia ke ola e 30%.

3. Paʻakikī kiʻekiʻe a me ke kūpaʻa ʻaʻahu

Pono ka paʻakikī o ke kila chromium kalapona kiʻekiʻe i hoʻohana pinepine ʻia (e like me GCr15) e hiki i ka HRc61 a i ka 65 e kū ai i nā ukana kiʻekiʻe a me ka friction wikiwiki.

4. Paʻa Dimensional a me ka hana wela

Pono ka mea hana i kahi coefficient haʻahaʻa o ka hoʻonui wela a me ka conductivity wela maikaʻi e pale ai i ka deformation i nā mahana kiʻekiʻe. Hiki i ke kila hali pale wela (e like me Cr4Mo4V) ke hoʻololi i nā wahi ma luna o 250 ℃.

5. Ke kū'ē'ē i ka palaho

He kūpono ke kila kila (e like me 440C) a i ʻole nā ​​​​mea seramika no nā wahi ʻawaʻawa, e like me nā lako kemika a i ʻole nā ​​​​kahua kai.

Nā Kumumanaʻo no ke Koho ʻana i nā Mea Hana Bearing

1. Kumumanaʻo hoʻohālikelike hana

E koho i nā mea hana e pili ana i nā kūlana hana e like me ka ukana, ka wikiwiki o ka wili ʻana a me ka mahana. Eia kekahi laʻana:

Ukana hopena kiʻekiʻe: Hoʻonui ke kila bearing carburized (e like me 20CrNiMo) i ke kūpaʻa hopena ma o ka paʻakikī ʻana o ka ʻili.

Kaiapuni wela kiʻekiʻe: Hiki i ke kila kūpaʻa wela (e like me M50) a i ʻole nā ​​​​​​pālolo (e like me Si3N4) ke kū i nā mahana ma luna o 300 ℃.

2. Kumumanaʻo hoʻokele waiwai

E kaulike i ke kumukūʻai a me ka hana o nā mea. No ka laʻana, makemake ʻia ʻo GCr15 ma mua o nā keramika pipiʻi no nā kūlana hana maʻamau.

3.Kumumanaʻo hilinaʻi

Pono nā mea e hala i nā hoʻokolohua koʻikoʻi (e like me ka helu maʻemaʻe a me ke kūlike o ka carbide) e hōʻoia i ka hana paʻa no ka wā lōʻihi.

4.Kumumanaʻo hoʻomau

E hāʻawi i ka mea nui i ke koho ʻana i nā mea hana hou (e like me ke kila) a i ʻole nā ​​​​kaʻina hana hoʻohana haʻahaʻa i ka ikehu (e like me ka hoʻoheheʻe ʻana i ka vacuum) e hōʻemi i ke kaumaha o ke kaiapuni.

Nā ʻAno Hana a me nā Kūlana no ke Koho ʻana i nā Mea Hana Bearing

1. Ke kaʻina koho mea e pili ana i nā kūlana hana

KaʻAnuʻu Hana 1: E wehewehe i nā kūlana hana

Me ke ʻano o ka ukana (static/dynamic), ka wikiwiki o ka wili ʻana, ka pae mahana, ke ʻano lubrication a me ka medium kaiapuni.

KaʻAnuʻu Hana 2: E hoʻohālikelike i nā waiwai o ka mea

Ka wikiwiki kiʻekiʻe a me ka māmā: Hoʻemi nā pā palaki (e like me ka nylon 66 i hoʻoikaika ʻia) i ka hakakā.

Hana kaumaha kiʻekiʻe: Ke kila carburized a i ʻole ke kila kūpaʻa hopena kalapona waena (e like me G20CrNi2Mo).

KaʻAnuʻu Hana 3: E hōʻoia i nā kūlana mea

E nānā i nā kūlana aupuni (e like me GB/T 3203) a i ʻole nā ​​kūlana honua (e like me ISO 683-17) e hōʻoia i ka paʻakikī a me ka maʻemaʻe o nā mea e kū nei i nā kūlana.

2. Nā kūlana kuhikuhi hana koʻikoʻi

Pono ka papa kuhikuhi i ke ʻano ʻike

ʻO ka hoʻāʻo paʻakikī Rockwell no nā apo kila GCr15 ʻo HRc61 a 65

ʻO ka ʻike oxygen ≤10ppm (no ke kila kiʻekiʻe) ke ʻano hoʻoheheʻe kinoea inert

Nā pae Carbide: papa ≤2, papa pūnaewele ≤2.5. Ka nānā ʻana i ka microscope metallographic

Ka Nānā ʻana i ka Hihia: Ke Koho ʻana i nā Mea Hana no nā Hiʻohiʻona Hoʻohana Maʻamau

Hihia 1: ʻO ke kumu nui o ka makani Turbine ʻO ke kaula e hali ananā

Nā kūlana hana: Ka wikiwiki wili kiʻekiʻe, ka ukana kaumaha, nā hoʻomaka pinepine a me nā kū.

Koho mea: Ke kila carburized (e like me 18CrNiMo7-6) me ka paʻakikī o ka ʻili, ka paʻakikī o ke kumu kiʻekiʻe, a me ka hoʻonui ʻana o 40% i ke ola kū'ē i ka luhi.

Hihia 2: Nā Bearings no nā Mīkini Meaʻai

Nā Pono: Kūleʻa i ka pala a maʻalahi hoʻi e hoʻomaʻemaʻe.

Koho mea: Ke kila kila (e like me 440C) a i ʻole ka seramika e pale aku ai i ka popo a me ka haumia.

Nā hopena o ke koho pono ʻole ʻana i nā mea hana

1. Ua hoʻopōkole nui ʻia ke ola

ʻO ka nui o nā haumia a i ʻole ka hoʻolaha like ʻole o nā carbides e alakaʻi ai i ka luhi spalling, e hōʻemi ana i ke ola lawelawe ma 30% a 50%.

2. Hāʻule koke

ʻO ka nui o ka hydrogen e hiki ai ke kumu o nā māwae kiko keʻokeʻo, a haki koke ka bearing i ka wā e hana ana.

3. Hoʻonui ʻia nā kumukūʻai

ʻO ka hoʻololi pinepine ʻana i nā bearings e alakaʻi ai i ka nalowale o ka manawa hana. Inā koho ʻia ka mea kūpono ʻole i ke kiʻekiʻe o ka mahana, hiki ke hoʻoulu i nā ahi o nā lako.

Nā Mea Hana Maʻamau a me nā Hiʻohiʻona Pili

Nā ʻano papa maʻamau a me nā hiʻohiʻona noi o nā ʻano mea

ʻO ke kila kila chromium kiʻekiʻe ʻo GCr15 kahi mea halihali ʻoihana maʻamau me ka paʻakikī kiʻekiʻe a me ke kūpaʻa ʻana i ka ʻaʻahu

ʻO ke kila Carburized 20Cr2Ni4A he kūpaʻa i ka hopena a paʻakikī i ka ʻili no ka locomotive kaʻaahi a me nā bearings wili wili.

Meaʻai kila kila 440C/9Cr18 kū i ka pala a me nā lako kemika

ʻO ke kinikini seramika Si3N4/ZrO2 kūpaʻa wela kiʻekiʻe, ka spindle wikiwiki haʻahaʻa haʻahaʻa, aerospace

ʻEnekinia palakiko PA66+GF30 lubrication ponoʻī, nā lako hale haʻahaʻa leo, nā motika liʻiliʻi

Ma o nā hoʻolālā koho mea ʻōnaehana a me nā kuhikuhi maʻamau, hiki ke hoʻomaikaʻi nui ʻia ka hana o nā bearings a hiki ke hoʻemi ʻia nā kumukūʻai. Inā makemake ʻoe e ʻike i nā kikoʻī loea hou aʻe a makemake paha e aʻo hou e pili ana i nā hoʻonā ʻōnaehana bearing, e ʻoluʻolu e hoʻokaʻaʻike mai iā mākou.