Ke hoʻokau nui nei nā ʻāina a puni ka honua i ka mālama ʻana i ka ikehu a me ka hōʻemi ʻana i ka hoʻokuʻu ʻana, ua lilo ka hoʻomohala ʻana i nā kaʻa uila uila maʻemaʻe. Ma waho aʻe o ka hana pākaukau, ʻo ka maikaʻi o ke kino kekahi mea koʻikoʻi e pili ana i ka pae hoʻokele o nā kaʻa ikehu hou. ʻO ka hoʻolaha ʻana i ka hoʻomohala ʻana i nā ʻōnaehana kino kaʻa māmā a me nā pilina kiʻekiʻe e hiki ke hoʻomaikaʻi i ka hoʻokele holoʻokoʻa holoʻokoʻa o nā kaʻa uila ma ka hōʻemi ʻana i ke kaumaha o ke kaʻa holoʻokoʻa e like me ka hiki ke hōʻoia i ka ikaika a me ka hana palekana o ke kaʻa. Ma ke ʻano o ka māmā māmā o nā kaʻa, e noʻonoʻo ke kino kila-alumini hybrid i ka ikaika a me ka hoʻemi kaumaha o ke kino, a lilo i mea nui e hoʻokō ai i ka māmā māmā o ke kino.
ʻO ke ala kuʻuna kuʻuna no ka hoʻohui ʻana i nā alumini alumini he maikaʻi ʻole ka hana pili a me ka hilinaʻi haʻahaʻa. ʻO ka riveting self-piercing, ma ke ʻano he ʻenehana pili hou, ua hoʻohana nui ʻia i ka ʻoihana kaʻa a me ka ʻoihana hana aerospace ma muli o kona pono pono i ka hoʻopili ʻana i nā mea hoʻohui māmā a me nā mea hoʻohui. I kēia mau makahiki i hala iho nei, ua alakaʻi ʻia nā noiʻi noiʻi ʻo Kina i ka ʻenehana riveting self-piercing a aʻo i nā hopena o nā ʻano hana wela like ʻole i ka hana ʻana o TA1 ʻoihana maʻemaʻe titanium self-piercing riveted ami. Ua ʻike ʻia ka hoʻomaikaʻi ʻana i nā ʻano hana hoʻōla wela a hoʻopau i ka ikaika paʻa o TA1 ʻoihana maʻemaʻe titanium hoʻopaʻa ponoʻī ʻana i nā hono. Ua nānā ʻia a nānā ʻia ka mīkini hana hui mai ke ʻano o ke kahe waiwai, a ua loiloi ʻia ka maikaʻi o ka hui ʻana ma muli o kēia. Ma o nā ho'āʻo metallographic, ua ʻike ʻia ua hoʻomaʻemaʻe ʻia ka nui o ka plastic deformation i loko o kahi ʻano fiber me kahi ʻano, e hāpai ana i ka hoʻomaikaʻi ʻana i ke koʻikoʻi a me ka ikaika luhi o ka hui.
ʻO ka noiʻi ma luna e pili nui ana i nā waiwai mechanical o nā hono ma hope o ka hoʻopili ʻana i nā pā alumini alumini. I ka hana riveting maoli o nā kino kaʻa, ʻo nā māwae o nā hui riveted o ka alumini alloy extruded profiles, ʻoi aku ka ikaika kiʻekiʻe o nā alumini alumini me nā mea hoʻohui kiʻekiʻe, e like me 6082 alumini alumini, ʻo ia nā kumu nui e kaupalena ana i ka noi o kēia kaʻina hana ma ke kino kaʻa. I ka manawa like, ʻo ke ʻano a me ke kūlana o nā profile extruded i hoʻohana ʻia ma ke kino o ke kaʻa, e like me ke kuʻi ʻana a me ka wili, pili pono i ka hui a me ka hoʻohana ʻana i nā profiles, a hoʻoholo pū i ka pololei dimensional o ke kino kaʻa ma hope. I mea e hoʻomalu ai i ke kuʻi ʻana a me ka wili ʻana o nā profiles a hōʻoia i ka pololei o ka dimensional o nā profiles, i ka hoʻohui ʻana i ka hoʻolālā make, ʻo ka wela o ka puka o nā profiles a me ka wikiwiki quenching pūnaewele ʻo ia nā mea koʻikoʻi nui. ʻOi aku ka kiʻekiʻe o ka wela o ka puka a me ka wikiwiki o ka hoʻopau ʻana, ʻoi aku ka nui o ka piko a me ka wili ʻana o nā profiles. No nā kiʻi alumini alumini no nā kino kaʻa, pono e hōʻoia i ka pololei o ka dimensional o nā profiles a me ka hōʻoia ʻaʻole e haki ka riveting alloy. ʻO ke ala maʻalahi loa e hoʻonui ai i ka pololei o ka dimensional a me ka riveting cracking performance of the alloy, ʻo ia ka hoʻomalu ʻana i ka ʻūhā ʻana ma o ka hoʻonui ʻana i ka mahana wela a me ke kaʻina hana kahiko o nā lāʻau extruded ʻoiai e mālama ana i ke ʻano mea, ka hoʻolālā make, ka wikiwiki extrusion, a me ka wikiwiki hoʻopau ʻole. No ka 6082 alumini alumini, ma lalo o ka manaʻo e hoʻololi ʻole nā kūlana kaʻina ʻē aʻe, ʻoi aku ka kiʻekiʻe o ka mahana extrusion, ʻoi aku ka pāpaʻu o ka ʻāpana coarse-grained, akā ʻoi aku ka nui o ka deformation o ka ʻaoʻao ma hope o ke kinai ʻana.
Lawe kēia pepa i ka 6082 alumini alumini me ka mea like me ka mea noiʻi, hoʻohana i nā mahana extrusion like ʻole a me nā kaʻina hana kahiko e hoʻomākaukau ai i nā laʻana ma nā mokuʻāina like ʻole, a loiloi i nā hopena o ka extrusion wela a me ke kūlana ʻelemakule ma ka hoʻāʻo riveting ma o nā hoʻokolohua riveting. Ma muli o nā hopena mua, ua hoʻoholo ʻia ke kaʻina hana ʻelemakule maikaʻi loa e hāʻawi i ke alakaʻi no ka hana ʻana o 6082 aluminum alloy body extrusion profiles.
1 Nā mea hoʻokolohua a me nā ʻano hana
E like me ka mea i hōʻike ʻia ma ka Papa 1, ua hoʻoheheʻe ʻia ke alumini alumini 6082 a hoʻomākaukau ʻia i loko o ka ingot poepoe e ka hoʻolei semi-continuous. A laila, ma hope o ka homogenization wela lapaʻau, ua wela ka ingot i nā mahana likeʻole a extruded i loko o ka profile ma ka 2200 t extruder. ʻO 2.5 mm ka mānoanoa o ka paia, ʻo ka mahana o ka pahu extrusion he 440 ± 10 ℃, ʻo ka mahana make extrusion he 470 ± 10 ℃, ka wikiwiki o ka extrusion he 2.3 ± 0.2 mm / s, a ʻo ke ʻano hoʻopiʻi ʻana he makani ikaika. Wahi a ka mahana wela, ua helu ʻia nā laʻana 1 a 3, ma waena o ka laʻana 1 ka haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa, a ʻo ka mahana billet e pili ana he 470 ± 5 ℃, ʻo ka mahana billet e pili ana i ka hāpana 2 he 485 ± 5 ℃, a ʻo ka mahana o ka hāpana 3 ka mea kiʻekiʻe loa, a ʻo ka mahana billet e pili ana he 500 ± 5 ℃.
Papa 1 Ua ana ʻia ka haku mele ʻana o ka huila hoʻāʻo (ʻāpana nui/%)
Ma lalo o ke ʻano o nā ʻāpana kaʻina hana ʻē aʻe e like me ka hoʻokumu ʻana i nā mea, ka hale make, ka wikiwiki extrusion, ka wikiwiki quenching e hoʻololi ʻole ʻia, ʻo ka mea ma luna No. Ma hope o ka insulation, ua ʻoluʻolu lākou i ka ea, a laila riveted e loiloi i ka mana o nā ʻano wela extrusion a me nā kūlana kahiko ma ka hoʻāʻo riveting. Hoʻohana ka hoʻāʻo riveting i 2.5 mm mānoanoa 6082 alloy me nā mahana extrusion ʻokoʻa a me nā ʻōnaehana kahiko like ʻole e like me ka pā lalo, a me 1.4 mm mānoanoa 5754-O alloy ma ke ʻano o ka pā luna no ka hoʻāʻo ʻana o SPR riveting. ʻO ka make riveting ʻo M260238, a ʻo ka rivet C5.3×6.0 H0. Eia kekahi, i mea e hoʻoholo hou ai i ke kaʻina hana ʻelemakule maikaʻi loa, e like me ka mana o ka extrusion wela a me ke kūlana ʻelemakule ma ka riveting cracking, ua koho ʻia ka pā i ka mahana extrusion maikaʻi loa, a laila mālama ʻia me nā mahana like ʻole a me nā manawa ʻelemakule e aʻo i ka mana o ka ʻōnaehana ʻelemakule ma ka riveting cracking, i mea e hōʻoia ai i ka ʻōnaehana ʻelemakule maikaʻi loa. Ua hoʻohana ʻia kahi microscope mana kiʻekiʻe e nānā i ka microstructure o ka mea ma nā wela extrusion like ʻole, ua hoʻohana ʻia kahi MTS-SANS CMT5000 series microcomputer-controlled electronic universal testing machine no ka hoʻāʻo ʻana i nā waiwai mechanical, a ua hoʻohana ʻia kahi microscope haʻahaʻa haʻahaʻa e nānā i nā hui riveted ma hope o ka riveting ma nā mokuʻāina like ʻole.
2 Nā hopena hoʻokolohua a me nā kūkākūkā
2.1 Ka hopena o ka wela extrusion a me ke kūlana ʻelemakule i ka haki ʻana o riveting
Lawe ʻia ka laʻana ma ka ʻāpana keʻa o ka ʻaoʻao extruded. Ma hope o ka wili ʻana, ka wili maikaʻi a me ka hoʻoliʻiliʻi ʻana me ka pepa one, ua ʻino ʻia ka hāpana me 10% NaOH no 8 mau minuke, a holoi ʻia ka huahana ʻeleʻele me ka waikawa nitric. Ua nānā 'ia ka'ōpala palaoa papa o ka hāpana me ka kiʻekiʻe-mana microscope, i loaʻa ma luna o ka ili ma waho o ka rivet buckle ma ka manao riveting kūlana, e like me ka hoike ana ma ka Figure 1. Ka awelika coarse palaoa papa hohonu o ka hāpana No. ʻO ka helu 3 he 31 μm. ʻO ka ʻokoʻa o ka hohonu o ka papa palaoa coarse ma muli o nā mahana extrusion like ʻole. ʻO ke kiʻekiʻe o ka wela extrusion, ʻoi aku ka haʻahaʻa o ke kūpaʻa deformation o ka alloy 6082, ʻoi aku ka liʻiliʻi o ka mālama ʻana i ka ikehu deformation i hana ʻia e ka friction ma waena o ka huila a me ka extrusion die (ʻoi aku ke kāʻei hana make), a ʻoi aku ka liʻiliʻi o ka ikaika hoʻokele recrystallization. No laila, ʻoi aku ka pāpaʻu o ka ʻili palaoa koʻa; ʻo ka haʻahaʻa o ka wela extrusion, ʻoi aku ka nui o ke kūpaʻa deformation, ʻoi aku ka nui o ka mālama ʻana i ka ikehu deformation, ʻoi aku ka maʻalahi o ka recrystallize, a ʻoi aku ka hohonu o ka papa palaoa coarse. No ka huila 6082, ʻo ke ʻano o ka recrystallization o ka palaoa coarse he recrystallization lua.
(a) Hoʻohālike 1
(b) Ke Ana Hoʻohālike 2
(c) Ke Ana Hoʻohālike 3
Kiʻi 1 ʻO ka mānoanoa o ka papa palaoa koʻikoʻi o nā profile extruded e nā kaʻina hana like ʻole
ʻO nā laʻana 1 a hiki i ka 3 i hoʻomākaukau ʻia i nā mahana extrusion like ʻole ma 180 ℃/6 h a me 190 ℃/6 h. Hōʻike ʻia nā ʻano mechanical o ka laʻana 2 ma hope o nā kaʻina hana ʻelua ma ka Papa 2. Ma lalo o nā ʻōnaehana kahiko ʻelua, ʻoi aku ka nui o ka ikaika a me ka ikaika tensile o ka hāpana ma 180 ℃ / 6 h ma mua o nā mea ma 190 ℃ / 6 h, ʻoiai ʻaʻole ʻokoʻa ka elongation o nā mea ʻelua, e hōʻike ana he 190 ℃ / 6 h ka mālama ʻana. Ma muli o ka loli nui ʻana o nā waiwai mechanical o ka 6 series aluminum alloy me ka hoʻololi ʻana o ke kaʻina hana ʻelemakule ma lalo o ka ʻelemakule, ʻaʻole ia e kūpono i ka paʻa o ka hana hana profile a me ka mana o ka riveting quality. No laila, ʻaʻole kūpono ka hoʻohana ʻana i ka mokuʻāina ma lalo o ka wā kahiko e hana i nā kiʻi kino.
Papa 2 Mechanical waiwai o ka laana No. 2 ma lalo o elua elemakule nenoai
ʻO ke ʻano o ka ʻāpana hoʻāʻo ma hope o ka riveting ua hōʻike ʻia ma ka Figure 2. I ka wā i hoʻopaʻa ʻia ai ka ʻāpana No. Ma muli o ke ʻano like ʻole i loko o nā kīʻaha, ʻaʻole kūlike ka deformation deformation i ka wā deformation, e hana ana i kahi ʻili ʻole. I ka wā ʻeleʻele ka ʻili, ʻoi aku ka nui o ka like ʻole o ka ʻili, e hana ana i kahi hiʻohiʻona ʻalani i ʻike ʻia e ka maka. I ka No. 3 hāpana me ka pāpaʻu coarse-grained papa i hoomakaukauia ma ka hoonui ana i ka extrusion wela ua riveted i loko o ka peak elemakule moku'āina, ka lalo ili o ka rivet ua 'ano laumania, a me ka pohā i hoʻopaʻa 'ia i kekahi laulā, i ike wale ia ma lalo o ka microscope magnification, e like me ka hoike ana ma Figure 2b. I ka wā o ka helu helu 3 i loko o ke kūlana o ka ʻelemakule, ʻaʻole i ʻike ʻia ka māhā ma lalo o ka hoʻonui microscope, e like me ka hōʻike ʻana ma ka Figure 2c.
(a) ʻIke ʻia nā māwae i ka maka
(b) ʻIke ʻia nā māwae liʻiliʻi ma lalo o ka microscope
(c) ʻAʻohe māwae
Kiʻi 2 ʻO nā degere like ʻole o ka pohā ma hope o ka riveting
ʻO ka ʻili ma hope o ka riveting ka mea nui i ʻekolu mau mokuʻāina, ʻo ia hoʻi, nā māwae i ʻike ʻia e ka maka ʻōlohelohe (hōʻailona ʻia "×"), ʻike ʻia nā māwae liʻiliʻi ma lalo o ka hoʻonui microscope (hōʻailona ʻia "△"), a ʻaʻohe māwae (marked "○"). Hōʻike ʻia nā hopena morphology riveting o nā laʻana mokuʻāina ʻekolu ma lalo o nā ʻōnaehana kahiko ʻelua ma ka Papa 3. Hiki ke ʻike ʻia i ka wā e mau ai ke kaʻina hana ʻelemakule, ʻoi aku ka maikaʻi o ka hana riveting cracking o ka specimen me ke kiʻekiʻe extrusion wela a me ka thinner coarse grain layer ʻoi aku ka maikaʻi ma mua o kēlā o ka specimen me ka hohonu o ka papa palaoa; i ka wā e mau ai ka papa palaoa coarse, ʻoi aku ka maikaʻi o ka hana riveting cracking o ka mokuʻāina ʻoi aku ka maikaʻi ma mua o ke kūlana ʻelemakule.
Papa 3 Ke nānā aku nei i nā hiʻohiʻona 1 a 3 ma lalo o ʻelua ʻōnaehana kaʻina
Ua aʻo ʻia nā hopena o ka morphology palaoa a me ke kūlana ʻelemakule ma ke ʻano axial compression cracking o nā profile. ʻO ke kūlana koʻikoʻi o ka mea i ka wā o ke kaomi axial ua kūlike me ka riveting self-piercing. Ua ʻike ʻia ka haʻawina ua puka mai nā māwae mai nā palena o ka palaoa, a ua wehewehe ʻia ke ʻano o ka ʻūhā Al-Mg-Si alloy e ke ʻano.
ʻO σapp ke koʻikoʻi i hoʻopili ʻia i ke aniani. I ka wā e pohā ai, ua like ka σapp me ka waiwai koʻikoʻi maoli e pili ana i ka ikaika tensile; ʻO σa0 ke kūʻē ʻana o nā precipitates i ka wā intracrystalline sliding; ʻO Φ ka helu hoʻoikaika koʻikoʻi, pili i ka nui o ka palaoa d a me ka laula paheʻe p.
Hoʻohālikelike ʻia me ka recrystallization, ʻoi aku ka maikaʻi o ka hoʻokumu ʻana o ka palaoa fibrous i ka hana ʻana i ka inhibition. ʻO ke kumu nui, ʻo ia ka hoʻemi nui ʻana o ka nui o ka palaoa d ma muli o ka hoʻomaʻemaʻe ʻana i ka palaoa, hiki ke hoʻemi pono i ke kumu koʻikoʻi koʻikoʻi Φ ma ka palena o ka palaoa, a laila e pale ai i ka haki ʻana. Ke hoʻohālikelike ʻia me ka hale fibrous, ʻo ke kumu hoʻohālikelike koʻikoʻi Φ o ka huila recrystallized me nā ʻanoʻano koʻikoʻi ma kahi o 10 mau manawa i ko ka mua.
Ke hoʻohālikelike ʻia me ka ʻelemakule kiʻekiʻe, ʻoi aku ka maikaʻi o ke kūlana o ka ʻelemakule i ka hana ʻana i ka inhibition, i hoʻoholo ʻia e nā ʻano ua like ʻole i loko o ka alloy. I ka wā o ka ʻelemakule, ua hoʻokahe ʻia nā ʻāpana 20-50 nm 'β (Mg5Si6) i ka alloy 6082, me ka nui o nā precipitates a me nā liʻiliʻi liʻiliʻi; i ka wā kahiko o ka huila, e emi ana ka heluna o nā precipitates i loko o ka alloy a nui aʻe ka nui. Hiki i nā ʻeke i hana ʻia i ka wā ʻelemakule ke kāohi pono i ka neʻe ʻana o nā dislocations i loko o ka alloy. ʻO kona ikaika pinning ma nā dislocations e pili ana i ka nui a me ka hapa leo o ka pae precipitate. ʻO ke kumu hoʻohālikelike:
f ka hakina leo o ka mahele precipitate; r ka nui o ka mahele; ʻO σa ka ikehu ma waena o ka māhele a me ka matrix. Hōʻike ke kumu i ka ʻoi aku ka nui o ka mahele precipitate a me ka liʻiliʻi o ka hapa leo, ʻoi aku ka liʻiliʻi o kona ikaika pinning ma nā dislocations, ʻoi aku ka maʻalahi o ka hoʻomaka ʻana o nā dislocations i loko o ka huila, a e emi ana ka σa0 i loko o ka huila mai ka ʻelemakule kiʻekiʻe a hiki i ke kūlana ʻelemakule. ʻOiai inā e emi ana ka σa0, ke hele ka huila mai ka ʻelemakule kiʻekiʻe a hiki i ke kūlana o ka ʻelemakule, ʻoi aku ka nui o ka waiwai σapp i ka wā o ka haki ʻana o ka huila, e hopena i ka emi nui o ke koʻikoʻi kūpono ma ka palena o ka palaoa (σapp-σa0). ʻO ke koʻikoʻi maikaʻi ma ka palena palaoa o ka ʻelemakule e pili ana i ka 1/5 o kēlā ma ka ʻelemakule kiʻekiʻe, ʻo ia hoʻi, ʻoi aku ka liʻiliʻi o ka haki ʻana i ka palena o ka palaoa ma ka mokuʻāina ʻoi loa, e hopena i ka hana riveting maikaʻi o ka alloy.
2.2 Optimization o extrusion wela a me ka elemakule kaʻina'ōnaehana
Wahi a nā hopena i luna, hiki i ka hoʻonui ʻana i ka wela extrusion ke hōʻemi i ka hohonu o ka ʻāpana coarse-grained, a laila e pale ai i ka haki ʻana o ka mea i ka wā o ka riveting. Eia nō naʻe, ma lalo o ka manaʻo o kekahi hui alloy, extrusion die structure a me ke kaʻina extrusion, inā kiʻekiʻe ka wela o ka extrusion, ma ka ʻaoʻao hoʻokahi, e hoʻonui ʻia ke kiʻekiʻe a me ka wili ʻana o ka ʻaoʻao i ka wā o ka hoʻopau ʻana i ke kaʻina hana, e hoʻokō ʻole ai ka nui o ka profile i nā koi. Ke noʻonoʻo nei i ke kūlana riveting, ka nui o ka profile, ka puka aniani kaʻina hana a me nā kumu ʻē aʻe, ʻoi aku ka maikaʻi o ka extrusion wela no kēia alloy ʻaʻole i emi iho ma mua o 485 ℃, ʻo ia hoʻi, ka laʻana No. 2.
Hōʻike ʻia nā ʻano mechanical o ka specimen No. 2 i nā manawa ʻelemakule like ʻole ma 180 ℃, 185 ℃ a me 190 ℃ ma ke Kiʻi 3, ʻo ia ka ikaika o ka hāʻawi ʻana, ka ikaika tensile a me ka elongation. E like me ka mea i hōʻike ʻia ma ka Figure 3a, ma lalo o 180 ℃, piʻi ka wā ʻelemakule mai 6 h a hiki i 12 h, a ʻaʻole i emi nui ka ikaika o ka mea. Ma lalo o 185 ℃, e like me ka piʻi ʻana o ka wā ʻelemakule mai 4 mau hola a 12 mau hola, piʻi mua ka ikaika hua a laila emi iho, a ʻo ka manawa ʻelemakule e pili ana i ka waiwai ikaika kiʻekiʻe he 5-6 mau hola. Ma lalo o 190 ℃, e like me ka piʻi ʻana o ka wā ʻelemakule, e emi mālie ka ikaika o ka hua. Ma keʻano holoʻokoʻa, i nā mahana wela ʻekolu, ʻoi aku ka haʻahaʻa o ka mahana kahiko, ʻoi aku ka kiʻekiʻe o ka ikaika kiʻekiʻe o ka mea. ʻO nā hiʻohiʻona o ka ikaika tensile ma ka Figure 3b e kūlike me ka ikaika hua i ka Figure 3a. ʻO ka hoʻolōʻihi ʻia i nā mahana ʻelemakule like ʻole i hōʻike ʻia ma ke Kiʻi 3c aia ma waena o 14% a me 17%, me ka ʻike ʻole o ke ʻano loli. Ke ho'āʻo nei kēia hoʻokolohua i ka ʻelemakule kiʻekiʻe a hiki i ka pae o ka ʻelemakule, a ma muli o nā ʻokoʻa hoʻokolohua liʻiliʻi, ʻo ka hewa hoʻāʻo ke kumu i maopopo ʻole ai ke ʻano hoʻololi.
Fig.3 Nā waiwai mīkini o nā mea i nā wela kahiko a me nā wā kahiko
Ma hope o ka hoʻomaʻamaʻa ʻana i ka wā kahiko, ua hōʻuluʻulu ʻia ka maʻi ʻana o nā ami riveted ma ka Papa 4. Hiki ke ʻike ʻia mai ka Papa 4 me ka piʻi ʻana o ka manawa, ua hoʻopau ʻia ka maʻi ʻana o nā ami riveted i kekahi ʻano. Ma lalo o ke kūlana o 180 ℃, ke ʻoi aku ka wā kahiko ma mua o 10 h, ʻo ke ʻano o ka hui riveted i kahi kūlana ʻae ʻia, akā paʻa ʻole. Ma lalo o ke kūlana o 185 ℃, ma hope o ka ʻelemakule no 7 mau hola, ke ʻano o ka hui riveted ʻaʻohe māwae a paʻa ka mokuʻāina. Ma lalo o ke kūlana o 190 ℃, ʻaʻohe māwae ke ʻano o ka hui riveted a paʻa ka mokuʻāina. Mai nā hopena ho'āʻo riveting, hiki ke ʻike ʻia ʻoi aku ka maikaʻi o ka hana riveting a ʻoi aku ka paʻa i ka wā o ka alloy i kahi kūlana ʻelemakule. Hoʻohui ʻia me ka hoʻohana ʻana i ka ʻaoʻao o ke kino, ʻo ka riveting ma 180 ℃ / 10 ~ 12 h ʻaʻole kūpono i ka paʻa maikaʻi o ke kaʻina hana i mālama ʻia e ka OEM. I mea e hōʻoiaʻiʻo ai i ka paʻa o ka hui riveted, pono e hoʻonui hou ʻia ka wā kahiko, akā ʻo ka hōʻoia ʻana o ka wā kahiko e alakaʻi i ka hoʻemi ʻana i ka hana hana profile a hoʻonui i nā kumukūʻai. Ma lalo o ke kūlana o 190 ℃, hiki i nā mea hoʻohālike āpau ke hoʻokō i nā koi o ka riveting cracking, akā ua hoʻemi nui ʻia ka ikaika o ka mea. E like me nā koi o ka hoʻolālā kaʻa, pono e hōʻoia ʻia ka ikaika o ka 6082 alloy ma mua o 270 MPa. No laila, ʻaʻole kūpono ka mahana kahiko o 190 ℃ i nā koi ikaika. I ka manawa like, inā he haʻahaʻa loa ka ikaika waiwai, ʻoi aku ka liʻiliʻi o ke koena mānoanoa o ka pā lalo o ka hui riveted. Ma hope o ka ʻelemakule ma 190 ℃ / 8 h, hōʻike nā hiʻohiʻona cross-sectional riveted i ke koena o ka mānoanoa he 0.26 mm, ʻaʻole i hoʻokō i ka koi kuhikuhi o ≥0.3 mm, e like me ka mea i hōʻike ʻia ma ka Figure 4a. Ma ka noʻonoʻo ʻana, ʻo ka mahana ʻelemakule maikaʻi loa he 185 ℃. Ma hope o ka ʻelemakule no 7 h, hiki i ka mea ke hoʻokō pono i nā koi riveting, a hoʻokō ka ikaika i nā koi hana. Ke noʻonoʻo nei i ka paʻa ʻana o ke kaʻina hana riveting i ka hale hana welding, ua manaʻo ʻia ka manawa ʻelemakule maikaʻi loa e hoʻoholo ʻia e like me 8 h. Hōʻike ʻia nā hiʻohiʻona cross-sectional ma lalo o kēia ʻōnaehana kaʻina hana ma ke Kiʻi 4b, e kū ana i nā koi kuhikuhi pili. ʻO ka ʻaoʻao hema a me ka ʻākau he 0.90 mm a me 0.75 mm, e hoʻokō ana i nā koi kuhikuhi o ≥0.4 mm, a ʻo ka mānoanoa koena lalo he 0.38 mm.
Papa 4 Ka naha ana o ka laana 2 ma na wela like ole a me na manawa kahiko
Fig.4 Nā hiʻohiʻona keʻa o nā hui riveted o 6082 papa lalo ma nā mokuʻāina ʻelemakule like ʻole.
3 Ka hopena
ʻOi aku ka kiʻekiʻe o ka wela extrusion o 6082 alumini alloy profiles, ʻoi aku ka pāpaʻu o ka ʻili ma hope o ka extrusion. Hiki i ka mānoanoa pāpa'u pāpa'u ke ho'emi maika'i i ke kumu ho'ona'auao ko'iko'i ma ka palena o ka palaoa, a laila e pale ai i ka pohā riveting. Ua hoʻoholo ka noiʻi hoʻokolohua ʻaʻole emi ka mahana extrusion maikaʻi loa ma mua o 485 ℃.
Ke like ka mānoanoa o ka papa o 6082 alumini alloy profile, ʻoi aku ka liʻiliʻi o ke koʻikoʻi maikaʻi o ka palena o ka palaoa i ka wā kahiko ma mua o ka wā kahiko, ʻoi aku ka liʻiliʻi o ka haki ʻana i ka wā riveting, a ʻoi aku ka maikaʻi o ka hana riveting o ka alloy. I ka noʻonoʻo ʻana i nā kumu ʻekolu o ka riveting stability, riveted joint interlocking value, heat treatment production efficiency and economic benefits, ʻo ka ʻōnaehana kahiko maikaʻi loa no ka alloy ua hoʻoholo ʻia he 185 ℃ / 8h.
Ka manawa hoʻouna: Apr-05-2025
