Ku'ina Hana o Zinc-Aluminum Alloy Bushings

'O'ole'a ki'eki'e a me ka Wela -Matrix Kū'ē: Zinc-aluminum alloy ma kahi o 27% alumini. Ma hope o ka paʻa ʻana, hoʻokumu ʻia ka nui o ka alumini -zinc intermetallic compound reinforcement phases, e hoʻomaikaʻi nui ana i ka paʻakikī a me ka ikaika tensile (a hiki i 400–430 MPa), e hāʻawi ana i kahi ʻano kākoʻo microscopic paʻa i ka wā o ka hakakā, a me ka hōʻemi ʻana i ka lole.

Mechanism Lubricating Pono iho-:
I loko o ka graphite -bushings embedded bushings, high{1}}ma'ema'e graphite i ho'okomo 'ia i loko o nā pores ili o ka matrix (e uhi ana i ka 20%–30% o ka friction area). I ka wā ku'i, ho'ololi 'ia ka graphite i ka 'ili o ke kumu pili ma lalo o ka hana wela a me ka mechanical, e hana ana i kahi ki'i lubricating mau, e ho'emi ana i ka koena friction i 0.06–0.12, e loa'a ai ka aila -lubrication manuahi.

I loko o ka ʻaila porous-i loko o nā hale polymer, ua hoʻokomo ʻia nā mea polymer i hoʻomoe ʻia i loko o ka pahu, e hoʻokuʻu mau ana i ka lubricant ma o ka ʻōnaehana "micro-ʻaila", e hōʻemi ana i ka metala pololei-i-pili metala.

ʻO ka Lubrication i kākoʻo ʻia i ke kūkulu ʻia: ʻO kekahi mau hoʻolālā e hōʻike ana i nā lua aila a me nā ʻōnaehana hoʻopaʻa silicone, e ʻae ana i ka ʻaila waho e hoʻohui i ka lubrication, a me ka hoʻohana ʻana i ka elasticity o ka silicone e hoʻopaʻa maʻalahi i nā lua, e pale ana i ka leakage aila a hoʻolōʻihi i nā wā mālama.

Pōmaikaʻi māmā a me ke kumu kūʻai: ʻO ka mānoanoa o ka zinc -aluminium alloy ma kahi o 5.0 g/cm³, 40%–45% ka māmā ma mua o nā ʻāpana keleawe, a ʻo ke kumu kūʻai kumu he 30%–40% wale nō o ke keleawe -mea waiwai, no laila kūpono ia no nā noi pili i ke kaumaha a me ke kumu kūʻai.