1. Nā laʻana noi
1）Papa pili
I ka makahiki 1960, ua hoʻohana mua ʻo Toyota Motor Company i ka ʻenehana blank welded. ʻO ia ka hoʻohui ʻana i ʻelua a ʻoi aʻe paha nā lau ma ke kuʻi ʻana a laila e kaha. Hiki i kēia mau pepa ke loaʻa nā mānoanoa like ʻole, nā mea waiwai, a me nā waiwai. Ma muli o ka piʻi nui ʻana o nā koi no ka hana kaʻa a me nā hana e like me ka mālama ʻana i ka ikehu, ka mālama ʻana i ke kaiapuni, ka palekana o ka hoʻokele, a me nā mea ʻē aʻe, ua ʻoi aku ka nui o ka nānā ʻana i ka ʻenehana welding. Hiki ke hoʻohana ʻia ke kuʻi ʻana o ka pā, ka wiliwili kīwī,wiliwili laser, hydrogen arc welding, etc. I kēia manawa,wiliwili laserHoʻohana nui ʻia i ka noiʻi haole a me ka hana ʻana i nā blanks tailor-welded.
Ma ka hoʻohālikelike ʻana i nā hopena hoʻāʻo a me ka helu ʻana, ua ʻaelike maikaʻi nā hopena, e hōʻoia ana i ka pololei o ke kumu hoʻohālike wela. Ua helu ʻia ka laulā o ka weld seam ma lalo o nā ʻāpana kaʻina hana like ʻole a hoʻonui mālie ʻia. ʻO ka hope, ua ʻae ʻia ka lākiō ikehu beam o 2:1, ua hoʻonohonoho ʻia nā kaola pālua i ka like, aia ka nui o ka ikehu ma ke kikowaena o ka weld seam, a ʻo ka lāʻau ikaika liʻiliʻi aia ma ka pā mānoanoa. Hiki iā ia ke hōʻemi pono i ka laulā weld. Ina he 45 degere na kukuna elua mai kekahi i kekahi. Ke hoʻonohonoho ʻia, hana ka lāʻau ma luna o ka pā mānoanoa a me ka pā lahilahi. Ma muli o ka emi ʻana o ke anawaena beam hoʻomehana maikaʻi, ua emi pū ka laulā weld.
2） ʻO nā metala like ʻole ke kila alumini
Hoʻopuka ka haʻawina o kēia manawa i kēia mau manaʻo: (1) I ka piʻi ʻana o ka lākiō ikehu beam, e emi mālie ana ka mānoanoa o ka pūhui intermetallic ma kahi kūlana like o ka weld/aluminium alloy interface, a ʻoi aku ka maʻamau o ka hāʻawi ʻana. Ke RS = 2, ʻo ka mānoanoa o ka pae IMC ma waena o 5-10 microns. ʻO ka lōʻihi loa o ka IMC "like-needle" manuahi ma waena o 23 microns. I ka RS = 0.67, ʻo ka mānoanoa o ka pae IMC ma lalo o 5 microns, a ʻo ka lōʻihi loa o ka IMC "needle-like" manuahi he 5.6 microns. Hoʻemi nui ʻia ka mānoanoa o ka hui intermetallic.
(2)Ke hoʻohana ʻia ka laser lua-beam like ʻole no ka wili, ʻoi aku ka maʻamau o ka IMC ma ka weld/aluminium alloy interface. ʻOi aku ka mānoanoa o ka mānoanoa o ka IMC ma ka weld/aluminium alloy interface kokoke i ke kila/aluminium alloy joint interface, me ka mānoanoa o 23.7 microns. . Ke piʻi aʻe ka lākiō ikehu kaola, i ka RS=1.50, ʻoi aku ka nui o ka mānoanoa o ka papa IMC ma ka weld/aluminium alloy interface ma mua o ka mānoanoa o ka pūhui intermetallic ma ka ʻāpana like o ka lālani lua.
3. Aluminum-lithium alloy T-like hui
E pili ana i nā waiwai mechanical o nā hui welded laser o 2A97 alumini alumini, ua aʻo nā mea noiʻi i ka microhardness, nā waiwai tensile a me nā waiwai luhi. Hōʻike nā hopena hoʻāʻo: ʻo ka weld zone o ka laser welded joint o 2A97-T3/T4 alumini alumini ua palupalu loa. ʻO ka coefficient ma kahi o 0.6, ka mea nui e pili ana i ka hoʻoheheʻe ʻana a me ka paʻakikī ma hope o ka ua o ka pae hoʻoikaika; ʻO ka coefficient ikaika o ka 2A97-T4 alumini alumini hui hui ʻia e IPGYLR-6000 fiber laser hiki ke hiki i 0.8, akā haʻahaʻa ka plasticity, ʻoiai ka IPGYLS-4000 fiber.wiliwili laserʻO ka coefficient ikaika o ka laser welded 2A97-T3 alumini alumini hui e pili ana i 0.6; ʻO nā pore defects ke kumu o nā māwae luhi ma 2A97-T3 alumini hoʻohui laser welded ami.
Ma ke ʻano synchronous, e like me nā morphologies crystal like ʻole, ʻo FZ ka mea nui i haku ʻia me nā kristal columnar a me nā kristal equiaxed. He epitaxial EQZ ka ulu ʻana o nā crystals columnar, a pololei ko lākou ulu ʻana i ka laina fusion. ʻO kēia no ka mea ʻo ka ʻili o ka palaoa EQZ he ʻāpana nucleation mākaukau, a ʻo ka hoʻoheheʻe wela ma kēia ʻaoʻao ka wikiwiki loa. No laila, ʻoi aku ka maikaʻi o ka axis crystallographic mua o ka laina fusion vertical a ua kaupalena ʻia nā ʻaoʻao. Ke ulu nei nā kristal columnar i ke kikowaena o ka weld, hoʻololi ka morphology structural a hoʻokumu ʻia nā dendrites columnar. Ma ke kikowaena o ka weld, he kiʻekiʻe ka mahana o ka wai i hoʻoheheʻe ʻia, ua like ka nui o ka hoʻoheheʻe ʻana o ka wela ma nā ʻaoʻao a pau, a ulu like nā hua i nā ʻaoʻao a pau, e hana ana i nā dendrites equiaxed. Ke pili pono ka axis crystallographic mua o nā dendrites i hoʻohālikelike ʻia i ka mokulele specimen, hiki ke ʻike ʻia nā ʻano pua e like me ka pua ma ka pae metallographic. Eia kekahi, pili i ka supercooling o nā mea kūloko i ka weld zone, equiaxed fine-grained bands maʻamau i loko o ka welded seam wahi o ka synchronous mode T-shaped ami, a me ka palaoa morphology i ka equiaxed fine-grained band he okoa ia mai. ke ano o ka palaoa o EQZ. He helehelena like. No ka mea, ʻokoʻa ke kaʻina hana hoʻomehana o ke ʻano heterogeneous TSTB-LW me ke ʻano synchronous TSTB-LW, aia nā ʻokoʻa ʻokoʻa o ka macromorphology a me ka microstructure morphology. Ua ʻike ʻia ka hui like ʻana o ke ʻano heterogeneous TSTB-LW T i ʻelua pōʻai wela, e hōʻike ana i nā hiʻohiʻona wai hoʻoheheʻe pālua. Aia kahi laina fusion lua i ʻike ʻia i loko o ka weld, a he liʻiliʻi ka loko i hoʻoheheʻe ʻia e ka hoʻoheheʻe wela. Ma ke kaʻina TSTB-LW mode heterogeneous, ua hoʻopili ʻia ka weld komo hohonu e ke kaʻina hana hoʻomehana o ka welding conduction thermal. ʻO nā dendrites columnar a me nā dendrites equiaxed kokoke i ka laina fusion lua he mau palena subgrain ka liʻiliʻi a hoʻololi i loko o nā kolamu kolamu a i ʻole cellular crystals, e hōʻike ana i ke kaʻina hana hoʻomehana o ka hoʻoheheʻe thermal conductivity i ka hopena wela i nā welds komo hohonu. A ʻo ka nui o ka palaoa o nā dendrites i waenakonu o ka weld thermally conductive he 2-5 microns, ʻoi aku ka liʻiliʻi ma mua o ka nui o nā dendrites i waenakonu o ka weld komo hohonu (5-10 microns). ʻO kēia ka mea nui e pili ana i ka wela nui o nā welds ma nā ʻaoʻao ʻelua. Pili ka mahana i ka helu hoʻoluʻu ma hope.
3) Ke kumu o ka lua-beam laser pauda wiliwili kuʻi
4)Kiʻekiʻe solder hui ikaika
I ka hoʻokolohua hoʻoheheʻe hoʻoheheʻe ʻana i ka pauka laser pālua ʻelua, ʻoiai ua māhele ʻia nā kukuna laser ʻelua ma nā ʻaoʻao ʻelua ma nā ʻaoʻao ʻelua o ke kaula alahaka, ʻoi aku ka nui o ka laser a me ka substrate ma mua o ka hoʻoheheʻe ʻana i ka pauka laser pauka hoʻokahi. a ʻo nā hui solder i loaʻa ke kū pololei i ka uea alahaka. ʻO ke kuhikuhi uea he ʻano lōʻihi. Hōʻike ka Figure 3.6 i nā hui solder i loaʻa ma ka hoʻoheheʻe hoʻoheheʻe ʻana i ka pauka laser hoʻokahi a me ka lua-beam. I ka wā o ke kaʻina hana hoʻoheheʻe ʻana, inā he lua-kuʻiwiliwili laserʻano a i ʻole ka lāʻau hoʻokahiwiliwili laserʻO ke ʻano, ua hoʻokumu ʻia kekahi loko i hoʻoheheʻe ʻia ma luna o ka mea kumu ma o ka hoʻoili wela. Ma kēia ʻano, hiki i ka mea hoʻoheheʻe kumu metala i loko o ka wai i hoʻoheheʻe ʻia ke hana i kahi paʻa metala me ka pauka hoʻoheheʻe ponoʻī hoʻoheheʻe ʻia, a laila e loaʻa ai ka wili. I ka hoʻohana ʻana i ka laser ʻelua-beam no ka wili, ʻo ka pilina ma waena o ka kukuna laser a me ka mea kumu ka pilina ma waena o nā wahi hana o nā kukuna laser ʻelua, ʻo ia hoʻi, ka pilina ma waena o nā loko i hoʻoheheʻe ʻia e ka laser ma luna o ka mea. . Ma kēia ʻano, ʻoi aku ka nui o ka fusion hou ʻO ka ʻāpana ma mua o ka beam hoʻokahiwiliwili laser, no laila, loaʻa nā hui solder e ka lāʻau luawiliwili laserʻoi aku ka ikaika ma mua o ke kukui hoʻokahiwiliwili laser.
2. High solderability a me ka repeatability
I loko o ke kukui hoʻokahiwiliwili laserhoʻokolohua, ʻoiai ʻo ke kikowaena o kahi kikoʻī o ka laser e hana pololei ana i ka uea micro-bridge, he kiʻekiʻe loa ka uea alahaka no kawiliwili laserkaʻina hana, e like me ka puʻunaue like ʻole o ka ikehu laser a me ka mānoanoa o ka pauka alloy. E alakaʻi kēia i ka haki ʻana o ka uea i ka wā o ke kaʻina hana kuʻi ʻana a hiki i ka hoʻoheheʻe ʻana i ka uaea alahaka. I ke kaʻina hoʻoheheʻe laser pālua, no ka mea, ʻaʻole hana pololei nā kikowaena kikowaena o nā kukuna laser ʻelua i nā uea micro-bridge, ua hoʻemi ʻia nā koi koʻikoʻi no ke kaʻina hana welding laser o nā uaea alahaka, a me ka weldability a ʻoi aku ka maikaʻi o ka repeatability. .
Ka manawa hoʻouna: Oct-17-2023
