ʻAʻole kū i ka wela kiʻekiʻe ka papa 8.8 Bolts?
Papa 8.8 nā kī he ʻano hoʻohana nui ʻia o ka paʻa ikaika kiʻekiʻe, kaulana loa i ke kūkulu ʻana, automotive, a me nā noi ʻenekinia maʻamau ma muli o ko lākou ikaika hilinaʻi a paʻa.
Nā hiʻohiʻona
1. Ka Hui Mea: ʻO ka mea maʻamau, hana ʻia nā bolts Grade 8.8 mai nā kila haʻahaʻa haʻahaʻa a i ʻole nā kila carbon medium i mālama ʻia i ka wela (quenched and tempered) no ka hoʻokō ʻana i nā waiwai mechanical i makemake ʻia.
2. Pono Mechanical:
- Ikaika U'i: Papa 8.8 nā kī loaʻa ka ikaika tensile haʻahaʻa o 800 N/mm² (800 MPa).
- Ka ikaika o ka hua: ʻO ka ikaika hoʻohua, ʻo ia ka wahi e hoʻomaka ai ka bolt e hoʻololi i ka plastically, ma kahi o 640 N/mm² (640 MPa), ʻo ia ka 80% o ka ikaika tensile.
- Elongation: ʻO ka pākēneka elongation ka mea maʻamau ma kahi o 15%, e hōʻike ana i ka hiki ʻana o ka mea ma mua o ka haki ʻana.
3. Hoʻolālā Uila: Ke hahai nei kēia mau bolts i nā hana hoʻolālā pae maʻamau, e hōʻoia ana i ka hoʻohālikelike ʻana me nā mea hoʻopaʻa a me nā mea ʻē aʻe i ka papa ikaika like.
4. Hoʻopau i ka ʻili: Ma muli o ka noi, hiki ke hele mai nā bolts Grade 8.8 me nā ʻano like ʻole o ka ʻili, me nā uhi galvanized, zinc plating, a i ʻole nā lāʻau anti-corrosion ʻē aʻe e hoʻomaikaʻi i ko lākou kūpaʻa i nā wahi ʻino.
ʻAʻole kū i ka wela kiʻekiʻe ka papa 8.8 Bolts?
Papa 8.8 nā kī loaʻa nā waiwai mechanical maikaʻi i nā mahana hoʻohana maʻamau (maʻamau ma lalo o 100 ° C), akā hiki ke hoʻopilikia ʻia kā lākou hana ke ʻoi aku ka mahana i kahi palena. ʻO ka maʻamau, hiki i nā bolts Papa 8.8 ke mālama i ka hapa nui o ko lākou ikaika ma kahi o 150 ° C, akā hiki ke hoʻemi nui ʻia ko lākou ikaika ke piʻi hou ka mahana. Eia kekahi, hiki i ka hoʻohana lōʻihi i nā kaiapuni kiʻekiʻe ke kumu o Creep, Oxidation a i ʻole nā mea hoʻohaʻahaʻa ʻē aʻe o ka mea, a laila e hoʻopilikia i ka hilinaʻi a me ke ola lawelawe o nā bolts. Inā pono e hoʻohana ʻia nā bolts ma nā wahi wela wela, e koho mau ʻia nā bolts me nā māka ikaika kiʻekiʻe (e like me 10.9 a i ʻole 12.9), a i ʻole i hoʻolālā kūikawā ʻia i nā mea wela wela e like me ke kila wela, ke kila kila a i ʻole nā nickel-based alloys e hoʻohana ʻia e hana i nā bolts e hōʻoia i hiki iā lākou ke mālama i ka ikaika a me ka paʻa i nā wela kiʻekiʻe.
I ka pōkole, loaʻa i nā bolts grade 8.8 kahi hiki ke kū i nā mahana kiʻekiʻe, akā inā ʻoi aku ka nui o ko lākou mahana hoʻolālā, ʻōlelo ʻia e koho i nā mea kūpono a me nā māka bolt.
KAHUNA e kālele ana i ka hana ʻana i nā lako pono e like me Screws, Bolts, Nuts, Washers, Rivets, Thread rods, Nails, Anchors and Tools, etc.
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