ʻO ka bolt kahi ʻāpana mīkini maʻamau, hoʻohana pinepine ʻia ma nā wahi he nui, ʻelua mau ʻāpana o kahi hui o nā mea paʻa e hoʻopili ʻia e ke poʻo a me ka wili, pono e hoʻohana pū ʻia me ka nati, hoʻohana nui ʻia e hoʻopaʻa i ka pilina o ʻelua mau ʻāpana me nā lua ma o. Malia paha ʻaʻole ʻoe i maopopo i ka mea papa o ka bolt, e hoʻolauna kēia ʻatikala iā ʻoe i ka mea bolt, ka ʻike e pili ana i ka papa, i mea e ʻike ai ka poʻe hou aku i kēia mau waiwai liʻiliʻi o ka bolt.
He aha nā ʻano a me nā mea o nā bolts e pili ana?
ʻO ke ʻano o ka bolt e pili ana i ka bolt he 4.8grade, 8.8 grade, 10.9 grade a me nā ʻano bolt ʻē aʻe.
ʻO ka mea e pili ana i ka hoʻopaʻa ʻana e pili ana i ka mea i hana ʻia ai ka ʻōwili, e like me Q235, 35K, 40Cr, 45 # kila, 35CrMo kila, 304 kila kila a me 316 kila kila kila a pēlā aku.
He pilina paʻa ko ke kila palupalu a me nā mea hana, hiki i ke kila kalapona waena ke hana i nā bolts ikaika waena, hiki i ke kila kalapona kiʻekiʻe ke hana i nā bolts ikaika kiʻekiʻe. Hoʻākāka kekahi mau māka bolt i ka hoʻohuihui kemika a me nā waiwai mechanical, akā e hoʻoholo pū i ka mea hana.
Eia ka papa inoa o nā papa maʻamau o nā bolts hiki ke lilo i mea. Hiki i ka pae 4.8 ke Q235, Q195 a me nā mea kila palupalu ʻē aʻe. Hiki i ka pae 5.8 Q235 ma luna o nā mea āpau ke lilo, ʻaʻole pono ka mālama wela. ʻO ke anawaena o ke kaula pae 8.8 he 16MM a i ʻole ka liʻiliʻi, 35 # ka mālama wela, 16mm a ʻoi aku paha, 45 # a me ke kila kalapona haʻahaʻa. 10.9 pae o ke kila kalapona waena ka mālama wela 35Crmo 40Cr a pēlā aku.
Hiki ke hoʻokaʻawale ʻia nā ʻōwili ikaika kiʻekiʻe mai nā ʻōwili maʻamau ma o kā lākou mea hana?
Ma ke ʻano laulā, ua puʻunaue ʻia e like me ke kūlana ikaika.
ʻOi aku ma mua o 10 mau māka ka pae hana o ka bolt 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9, a pēlā aku, ʻoi aku ma mua o 8.8 mau bolts i hana ʻia me ke kila alloy haʻahaʻa kalapona a i ʻole ke kila kalapona waena a i ʻole ke kila wela (quenched, tempered), i ʻike nui ʻia ʻo nā bolts ikaika kiʻekiʻe, a ʻo ke koena o ka mea i ʻike nui ʻia ʻo nā bolts maʻamau. Loaʻa i ka lepili pae hana bolt ʻelua ʻāpana o ka haku mele kikohoʻe, ʻo ia hoʻi, ʻo ka waiwai o ka ikaika tensile nominal o ka bolt a me ka waiwai o ka lakio ikaika flexural.
No ka laʻana, ʻo ka pae hana 8.8 grade bolts, ʻo ke ʻano penei:
1, ʻo ka ikaika tensile inoa o ka mea bolt he pae 800MPa;
2, ʻo ka lakio ikaika o ka mea bolt he 0.8;
3, ʻo ka ikaika hua nominal o ka mea bolt a hiki i ka pae 800 × 0.8 = 640MPa o nā bolts ikaika kiʻekiʻe i hoʻohana pinepine ʻia no ka pae 8.8 a me 10.9, ʻo nā bolts maʻamau i hoʻohana pinepine ʻia no ka pae 4.8.
Ka manawa hoʻouna: Aug-28-2024
