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ʻO ke Koho Bearing Māmā a Kūpono: He Loiloi Piha o nā Mea Hana Paʻa Plastik

 

I ka ʻōwili houhāpai ʻanaI ka hoʻolālā ʻana, he mea nui ka hale paʻahao, a ʻo ke koho ʻana o ka mea e pili pono ana i ka hana o ke hali ʻana, ke ola, a me nā noi kūpono. Ke hoʻohālikelike ʻia me nā mea metala kuʻuna, ke piʻi mālie nei ka kaulana o nā hale paʻahao plastik ʻenekinia i nā ʻano ʻoihana like ʻole ma muli o ko lākou mau waiwai kino a me nā kemika kūikawā.

 

Ke nānā nei kēia ʻatikala i nā plastics ʻenekinia maʻamau e like menylon (PA), polyoxymethylene (POM), a me polyimide (PI), e nānā hohonu ana i kā lākou mau pono hana a me nā palena pili i nā noi hale paʻa.

 

Hoʻohālikelike Hana Mea Koʻikoʻi

 

Nailona (PA)

 

Ma muli o kona paʻakikī maikaʻi loa, ka lubrication ponoʻī, a me nā pono kumukūʻai, hoʻohana nui ʻia ka nylon i nā bearings e hana ana ma lalo o nā ukana waena a me nā mahana waena. ʻO kona coefficient haʻahaʻa o ka friction e kōkua i ka hōʻemi ʻana i ka walaʻau hana, e kūpono loa ia no nā mīkini hale a me nā lako keʻena e koi ana i nā pae kiʻekiʻe o ka mālie. Wahi a ka Rolling Bearing Application Handbook, loaʻa iā PA66 kahi mahana hana mau a hiki i ka 120°C a hiki ke kū i nā mahana pōkole a hiki i ka 150°C. ʻO kona waiwai PV (pressure × velocity) ma kahi o 50 MPa·m/s, e kūpono ana no ka hana wikiwiki waena.

 

Polyoxymethylene (POM)

 

Ua kaulana ʻo POM no kona ʻoʻoleʻa kiʻekiʻe, ka kolo haʻahaʻa, a me ke kūpaʻa maikaʻi loa o ka dimensional. ʻO kona ʻili laumania a me ke kūpaʻa ʻana i ka ʻaʻahu maikaʻi loa i ka nylon e kūpono ia no nā hale paʻa i nā noi wikiwiki, māmā, a i ʻole nā ​​​​​​mea hana pololei. Loaʻa iā POM kahi pae mahana hana mai -40°C a 100°C, me ka hana pōkole a hiki i 120°C. Hiki i kona waiwai PV ke hiki i 60 MPa·m/s, e lilo ia i koho kūpono no nā motika wikiwiki a me nā ʻōnaehana holoi kaʻa.

 

Polyimide (PI)

 

Ma ke ʻano he ʻelele o nā plastics ʻenekinia hana kiʻekiʻe, hāʻawi ʻo PI i ke kūpaʻa wela kiʻekiʻe maikaʻi loa (a hiki i 260°C no ka hoʻohana lōʻihi) me ka mālama ʻana i ka ikaika mechanical maikaʻi a me ke kūpaʻa radiation. Hiki i kona waiwai PV ke ʻoi aku ma mua o 100 MPa·m/s, e kūpono ai no nā wahi koʻikoʻi e like me ka aerospace, nā motika wela kiʻekiʻe, a me nā ʻōnaehana bearing i nā lako vacuum. ʻOiai ke kumukūʻai kiʻekiʻe, ʻaʻole hiki ke hoʻololi ʻia i nā kūlana hana kūikawā.

 

Nā Pōmaikaʻi Holoʻokoʻa o nā Hale Palaki ʻenekinia

 

Māmā: Me ka nui o ka palakika he hoʻokahi wale nō hapakolu o ke kila, hoʻemi nui ka palakika i ke kaumaha holoʻokoʻa, hoʻohaʻahaʻa i ka inertia, a hoʻomaikaʻi i ka pane dynamic.

 

Hana Haʻahaʻa-Wai: He haʻahaʻa ka modulus elastic o nā plastik, e omo pono ana i nā haʻalulu no ka hana mālie.

 

Nā ʻAno Lubrication Ponoʻī: ʻO ka hapa nui o nā plastik ʻenekinia ua lubricated ʻia i loko, e hōʻemi ana i ka hilinaʻi ʻana i ka lubrication o waho a hoʻolōʻihi i nā wā mālama.

 

Ke Kū'ē ʻana i ka ʻAi ʻOle: Kū'ē i ka wai, ka ʻaila, a me nā ʻano kemika like ʻole, kūpono lākou no ka hoʻohana ʻana i nā wahi pulu a ʻinoʻino paha.

 

Nā Manaʻo Koho a me nā Kūlana

 

Wahi a ke kūlana JB/T 7048, ʻo ke koho ʻana i nā pā palaki e pono ai ka noʻonoʻo piha ʻana i ka ukana, ka wikiwiki, ka mahana, a me nā mea pili i ke kaiapuni. Makemake ʻia ʻo POM no nā noi wikiwiki a haʻahaʻa ka walaʻau; ʻO PA kahi koho no nā kūlana hana kaulike; a ua ʻōlelo ʻia ʻo PI no nā mahana kiʻekiʻe loa a i ʻole nā ​​​​koi hilinaʻi kiʻekiʻe.

 

ʻAʻole wale nā ​​​​pahu plastik ʻenekinia he pani no ka metala; akā, ua hoʻonohonoho pono ʻia lākou no ka hana ma nā noi kikoʻī. Ma o ke koho ʻana i nā mea ʻepekema, hiki ke hoʻomaikaʻi piha ʻia ka pono, ka mālie, a me ke ola me ka mālama ʻana i ka hilinaʻi o ka bearing. Me ka holomua o ka ʻenehana mea, e hoʻomau ka hoʻonui ʻia ʻana o nā palena noi o nā plastics hana kiʻekiʻe i nā bearings.