Njengoko amazwe kwihlabathi liphela encamathela ukubaluleka okukhulu kugcino lwamandla kunye nokunciphisa ukukhutshwa kombane, uphuhliso lwezithuthi zombane ezisulungekileyo zombane sele luyinto eqhelekileyo. Ukongeza ekusebenzeni kwebhetri, umgangatho womzimba ukwayinto ebalulekileyo echaphazela ukuqhutywa kweemoto ezintsha zamandla. Ukukhuthaza uphuhliso lwezakhiwo zemoto ezikhaphukhaphu kunye nokudityaniswa komgangatho ophezulu kunokuphucula uluhlu olubanzi lokuqhuba izithuthi zombane ngokunciphisa ubunzima besithuthi sonke kangangoko kunokwenzeka ngelixa uqinisekisa amandla kunye nokusebenza ngokukhuselekileyo kwesithuthi. Ngokumalunga nokukhanya kweemoto, umzimba wentsimbi-aluminiyam hybrid ithatha ingqalelo amandla kunye nokunciphisa ubunzima bomzimba, ibe yindlela ebalulekileyo yokufezekisa ukukhanya komzimba.
Indlela yokudibanisa yendabuko yokudibanisa i-alloys ye-aluminium inokusebenza kakubi kokudibanisa kunye nokuthembeka okuphantsi. Ukuzibhoboza i-riveting, njengeteknoloji entsha yokudibanisa, isetyenziswe ngokubanzi kwishishini leemoto kunye ne-aerospace yokuvelisa i-aerospace ngenxa yenzuzo yayo epheleleyo ekudibaniseni i-alloys yokukhanya kunye nezinto ezidibeneyo. Kwiminyaka yakutshanje, abaphengululi basekhaya China baye baqhuba uphando olufanelekileyo malunga nokuzibhoboza iteknoloji riveting kwaye bafunda iziphumo zeendlela ezahlukeneyo zonyango ubushushu kwintsebenzo TA1 yoshishino esulungekileyo titanium self-ukugqobhoza riveted joints. Kwafunyaniswa ukuba iindlela zonyango lobushushu kunye nokucima ubushushu ziphucule ukomelela okumileyo kwe-TA1 yoshishino olusulungekileyo lwe-titanium yokuzibhoboza ngokuzibhoboza amalungu. Indlela yokubumba edibeneyo ibonwe kwaye ihlalutywe kwimbono yokuhamba kwezinto, kwaye umgangatho odibeneyo uhlolwe ngokusekelwe kule nto. Ngokusebenzisa iimvavanyo ze-metallographic, kwafunyaniswa ukuba indawo enkulu ye-deformation yeplastiki ihlanjululwe kwisakhiwo sefiber kunye nokuthambekela okuthile, okwakhuthaza ukuphuculwa koxinzelelo lwesivuno kunye namandla okukhathala komgudu.
Olu phando lungentla lujolise ikakhulu kwiimpawu zemishini yamalungu emva kokuvuthwa kweeplate ze-aluminium alloy. Kweyona mveliso ye-riveting yemizimba yemoto, iintanda ezidibeneyo ze-aluminium alloy extruded profiles, ngakumbi i-alloys ephezulu ye-aluminium enomxholo ophezulu we-alloying, njenge-6082 aluminium alloy, zizinto eziphambili ezithintela ukusetyenziswa kwale nkqubo kumzimba wemoto. Kwangaxeshanye, imilo kunye nokunyamezelwa kwesikhundla kwiiprofayili ezikhutshiweyo ezisetyenziswa kumzimba wemoto, njengokugoba kunye nokujija, kuchaphazela ngokuthe ngqo ukudibana kunye nokusetyenziswa kweeprofayili, kwaye zikwamisela ukuchaneka komda kwemoto elandelayo. Ukuze ulawule ukugoba kunye nokujijwa kweeprofayili kunye nokuqinisekisa ukuchaneka komgangatho weeprofayili, ukongeza kwisakhiwo sokufa, ubushushu bokukhutshwa kweeprofayili kunye nesantya sokucima i-intanethi zezona zinto zibalulekileyo ezinempembelelo. Ukuphakama kweqondo lobushushu lokuphuma kunye nokukhawuleza kwesantya sokucima, kokukhona ukugoba kunye neqondo lokujija kwiiprofayili. Kwiiprofayili ze-aluminium ye-alloy yemizimba yemoto, kuyimfuneko ukuqinisekisa ukuchaneka komgangatho weeprofayili kunye nokuqinisekisa ukuba i-alloy riveting ayiqhekezi. Eyona ndlela ilula yokwandisa ukuchaneka kwe-dimensional kunye nokusebenza kwe-riveting cracking ye-alloy kukulawula ukukrazula ngokulungisa ubushushu bokufudumala kunye nenkqubo yokuguga kweentonga ezikhutshiweyo ngelixa ugcina ukubunjwa kwezinto eziphathekayo, isakhiwo sokufa, isantya se-extrusion, kunye nesantya sokucima singatshintshi. Kuba 6082 ingxubevange aluminiyam, phantsi kwesiseko ukuba ezinye iimeko inkqubo ahlale ingatshintshanga, iqondo eliphezulu extrusion ubushushu, nzulu umaleko coarse-grained, kodwa ngakumbi deformation iprofayile emva kokucima.
Eli phepha lithatha i-6082 i-aluminium alloy kunye nokubunjwa okufanayo njengento yophando, isebenzisa amaqondo okushisa ahlukeneyo kunye neenkqubo ezahlukeneyo zokuguga ukulungiselela iisampulu kumazwe ahlukeneyo, kwaye ivavanya imiphumo yokushisa kwe-extrusion kunye nemeko yokuguga kuvavanyo lwe-riveting ngokusebenzisa iimvavanyo ze-riveting. Ngokusekelwe kwiziphumo zokuqala, eyona nkqubo yokuguga izimisele ngakumbi ukunika isikhokelo kwimveliso elandelayo ye-6082 aluminium alloy body extrusion profiles.
1 Imathiriyeli yovavanyo kunye neendlela
Njengoko kubonisiwe kwiThebhile 1, i-6082 i-aluminium alloy yanyibilika kwaye yalungiswa kwi-ingot ejikelezayo ngokuphosa ngokuqhubekayo. Emva koko, emva kokunyanga kwe-homogenization yokushisa, i-ingot yatshiswa kumaqondo ahlukeneyo kwaye yagqithiselwa kwiprofayili kwi-2200 t extruder. Ubungqingqwa bendonga yeprofayili yayiyi-2.5 mm, iqondo lobushushu lombhobho we-extrusion laliyi-440 ± 10 ℃, iqondo lobushushu le-extrusion lokufa laliyi-470 ± 10 ℃, isantya se-extrusion sasiyi-2.3 ± 0.2 mm/s, kwaye indlela yokucima iprofayile yayikupholisa umoya onamandla. Ngokutsho ubushushu ukufudumeza, iisampulu babalelwa 1 ukuya 3, phakathi apho isampuli 1 waba lolona bushushu lisezantsi zokufudumeza, kunye lobushushu ehambelana billet kwaba 470±5 ℃, iqondo lobushushu ehambelana billet isampuli 2 yaba 485±5 ℃, kunye lobushushu isampuli 3 yaba lelona liphezulu, kunye nobushushu ehambelana billet kwaba ℃500.±5.±5.
Itheyibhile 1 Ukulinganisa ukwakheka kweekhemikhali kwi-alloy yovavanyo (iqhezu lobunzima /%)
Phantsi komqathango wokuba ezinye iiparameters zenkqubo ezifana nokubunjwa kwezinto, isakhiwo sokufa, isantya se-extrusion, isantya sokucima sihlala singatshintshi, iisampulu ezingentla ze-1 ukuya kwe-3 ezifunyenwe ngokulungelelanisa ubushushu bokufudumala kwe-extrusion zigugile kwisithando somlilo sebhokisi, kunye nenkqubo yokuguga yi-180 ℃/6 h kunye ne-190 ℃/6 . Emva kwe-insulation, i-air-cooled, kwaye emva koko i-riveted ukuvavanya impembelelo yamaqondo okushisa ahlukeneyo kunye neendawo zokuguga kuvavanyo lwe-riveting. Uvavanyo lwe-riveting lusebenzisa i-2.5 mm ubukhulu be-alloy ye-6082 kunye namaqondo okushisa ahlukeneyo kunye neenkqubo ezahlukeneyo zokuguga njenge-plate ephantsi, kunye ne-1.4 mm ubukhulu be-5754-O i-alloy njengeplate ephezulu yovavanyo lwe-SPR riveting. I-riveting die yi-M260238, kunye ne-rivet yi-C5.3 × 6.0 H0. Ukongeza, ukuze kuqwalaselwe ngakumbi eyona nkqubo yokuguga, ngokwempembelelo yobushushu bokukhula kunye nemeko yokuguga kwi-riveting cracking, ipleyiti kwiqondo lobushushu elilelona liphezulu likhethwa, emva koko liphathwe ngamaqondo obushushu ahlukeneyo kunye namaxesha ahlukeneyo okuguga ukufunda impembelelo yenkqubo yokuguga kwi-riveting cracking, ukuze ekugqibeleni kuqinisekiswe eyona nkqubo yokuguga. Imakroskopu enamandla amakhulu isetyenziselwe ukujonga ubume bezinto kumaqondo obushushu ahlukeneyo, umatshini wovavanyo we-elektroniki we-MTS-SANS CMT5000 olawulwa yi-elektroniki wasetyenziselwa ukuvavanya iipropathi zoomatshini, kunye nemakroskopu enamandla aphantsi yasetyenziswa ukujonga amalunga aqhagamshelwe emva kokuntywila kumazwe awahlukeneyo.
2Iziphumo zovavanyo kunye nengxoxo
2.1 Impembelelo yobushushu be-extrusion kunye nemeko yokuguga kwi-riveting cracking
Isampuli yathathwa ecaleni kwecandelo lomnqamlezo weprofayili ekhutshiweyo. Emva kokugaya ngokukrakra, ukugaya kakuhle kunye nokupolisha nge-sandpaper, isampuli yatshitshiswa nge-10% ye-NaOH imizuzu eyi-8, kwaye imveliso ye-corrosion emnyama yahlanjululwa nge-nitric acid. Uluhlu lweenkozo ezirhabaxa zesampulu zabonwa nge-microscope yamandla aphezulu, ebekwe phezu komhlaba ngaphandle kwe-rivet buckle kwindawo ecetywayo ye-riveting, njengoko kubonisiwe kuMzobo 1. Umyinge we-avareji yenkozo erhabaxa ubunzulu besampulu No. μm. Umahluko kubunzulu bomaleko orhabaxa wenkozo ubangelwa ikakhulu kumaqondo obushushu ahlukeneyo e-extrusion. Ukuphakama kobushushu be-extrusion, isezantsi ukuchasana kwe-deformation ye-alloy ye-6082, incinci yokugcina amandla e-deformation eyenziwa yi-friction phakathi kwe-alloy kunye ne-extrusion die (ingakumbi ibhanti elisebenzayo lokufa), kunye nencinci i-recrystallization drive force. Ke ngoko, umaleko orhabaxa womphezulu wengqolowa awukho nzulu; okukhona usezantsi ubushushu be-extrusion, kokukhona uxhathiso lwe-deformation, kokukhona ugcino lwamandla oguquguqukayo, kokukhona kulula ukuhlaziya, kunye nokunzulu umaleko orhabaxa wenkozo. Kwi-alloy ye-6082, indlela yokwenza i-coarse grain recrystallization yi-recrystallization yesibini.
(a) Umzekelo 1
(b) Umzekelo 2
(c) Umzekelo 3
Umfanekiso woku-1 Ukutyeba kweenkozo ezirhabaxa zeeprofayili ezikhutshiweyo ngeenkqubo ezahlukeneyo
Iisampulu ze-1 ukuya kwi-3 ezilungiselelwe kumaqondo okushisa ahlukeneyo e-extrusion zazidala kwi-180 ℃/6 h kunye ne-190 ℃/6 h, ngokulandelanayo. Iimpawu zomatshini zesampulu ye-2 emva kweenkqubo ezimbini zokuguga ziboniswa kwiThebhile 2. Ngaphantsi kweenkqubo ezimbini zokuguga, amandla esivuno kunye namandla okunyamezela kwesampuli kwi-180 ℃ / 6 h aphezulu kakhulu kunezo zi-190 ℃ / 6 h, ngelixa ukunyuswa kwezi zibini azihlukanga kakhulu, kubonisa ukuba i-180 ℃ / 6 ukuguga ingaphezulu. Ekubeni iipropathi ze-mechanical ze-6 series aluminium alloy ziguquguquka kakhulu ngokutshintsha kwenkqubo yokuguga kwimeko engaphantsi kokuguga, ayihambelani nokuzinza kwenkqubo yokuvelisa iphrofayili kunye nokulawulwa komgangatho we-riveting. Ke ngoko, akufanelekanga ukusebenzisa imeko engaphantsi kweminyaka yobudala ukuvelisa iiprofayili zomzimba.
Itheyibhile 2 Iimpawu zeMechanical zesampuli No. 2 phantsi kweenkqubo ezimbini zokuguga
Ukubonakala kwesiqwenga sovavanyo emva kwe-riveting kuboniswe kwi-Figure 2. Xa isampuli ye-1 kunye ne-coarse-grained layer i-riveted kwi-peak yokuguga, indawo ephantsi ye-rivet yayine-peel e-orange ebonakalayo kunye nokuqhekeka okubonakalayo kwiso lenyama, njengoko kuboniswe kuMfanekiso 2a. Ngenxa yokungahambelani kwe-orientation ngaphakathi kweenkozo, i-degree deformation iya kuba ingalingani ngexesha lokuguqulwa, lenze indawo engalinganiyo. Xa iinkozo zilukhuni, ukungalingani komhlaba kuba mkhulu, okwenza i-orange peel phenomenon ebonakalayo kwiliso lenyama. Xa isampuli ye-3 ene-shallower coarse-grained layer elungiselelwe ngokunyusa ubushushu be-extrusion yayihlanjululwe kwinqanaba lokuguga, indawo ephantsi ye-rivet yayigudileyo, kwaye i-cracking yayicinezelekile kumlinganiselo othile, owawubonakala kuphela phantsi kwe-microscope yokwandisa, njengoko kubonisiwe kwi-Figure 2b. Xa isampuli ye-3 yayikwimeko yokuguga ngokugqithiseleyo, akukho kuphazamiseka kwabonwa phantsi kwe-microscope yokukhulisa, njengoko kuboniswe kuMfanekiso 2c.
(a) Iintanda ezibonakala kwiliso lenyama
(b) Ukuqhekeka okuncinci kubonakala phantsi kwe-microscope
(c) Akukho zintanda
Umzobo we-2 Iidigri ezihlukeneyo zokuqhekeka emva kwe-riveting
Umphezulu emva kokukrazula ubukhulu becala kwiindawo ezintathu, ezizezi, iintanda ezibonakala ngeso lenyama (eziphawulwe “×”), iintanda ezincinane ezibonakala phantsi kokwandiswa kwemicroscope (ephawulwe “△”), kwaye akukho zintanda (eziphawulwe “○”). Iziphumo ze-riveting morphology zezi sampuli zingasentla ezintathu zikarhulumente phantsi kweenkqubo ezimbini zokuguga ziboniswa kwiThebhile 3. Ingabonwa ukuba xa inkqubo yokuguga ihlala ihleli, i-riveting cracking performance ye-specimen kunye nobushushu obuphezulu be-extrusion kunye ne-thinner coarse grain layer ingcono kune-specimen enomgangatho onzulu wengqolowa obunzima; xa umaleko orhabaxa okuziinkozo ungaguquguqukiyo, ukusebenza kokuqhekeka kwe-riveting yemeko yokuguga kakhulu kubhetele kunokwemeko yokuguga.
Itheyibhile 3 Ukubonakala kwe-Riveting yeesampuli 1 ukuya kwi-3 phantsi kweenkqubo ezimbini zenkqubo
Iimpembelelo ze-morphology yeenkozo kunye nemeko yokuguga kwi-axial compression cracking yokuziphatha kweeprofayili zafundwa. Imeko yoxinzelelo lwezinto eziphathekayo ngexesha lokunyanzeliswa kwe-axial yayihambelana neyokuzibhoboza i-riveting. Uphononongo lufumene ukuba ukuqhekeka kwavela kwimida yengqolowa, kwaye indlela yokuqhekeka ye-Al-Mg-Si i-alloy yachazwa yifomula.
σapp luxinzelelo olufakwa kwikristale. Xa uqhekeka, σapp ilingana nexabiso lokwenyani loxinzelelo oluhambelana namandla okuqina; I-σa0 kukuchasana kwe-precipitates ngexesha le-intracrystalline sliding; Φ ngumlinganiselo woxinaniso woxinizelelo, onxulumene nobukhulu beenkozo d kunye nobubanzi besiliphu p.
Xa kuthelekiswa ne-recrystallization, i-fibrous grain structure ikulungele ngakumbi ukunqanda ukuqhekeka. Isizathu esona sizathu kukuba ubukhulu bengqolowa d buncitshiswe kakhulu ngenxa yokulungiswa okuziinkozo, okunokunciphisa ngokufanelekileyo i-concentration factor Φ kumda wengqolowa, ngaloo ndlela inqanda ukuqhekeka. Xa kuthelekiswa nesakhiwo se-fibrous, i-concentration factor factor Φ ye-alloy recrystallized alloy kunye ne-coarse grains malunga ne-10 amaxesha angaphambili.
Xa kuthelekiswa nokuguga okuphakamileyo, imeko yokuguga ngokugqithiseleyo ihambelana nokuvinjelwa kokuqhekeka, okugqitywe ngezigaba ezahlukeneyo zemvula ngaphakathi kwe-alloy. Ngethuba lokuguga okuphezulu, izigaba ze-20-50 nm 'β (Mg5Si6) zichithwa kwi-alloy ye-6082, kunye nenani elikhulu le-precipitates kunye nobukhulu obuncinci; xa i-alloy ikwi-over-aging, inani le-precipitates kwi-alloy liyancipha kwaye ubukhulu buba bukhulu. I-precipitates eyenziwe ngexesha lokuguga inokuthintela ngokufanelekileyo ukuhamba kwee-dislocations ngaphakathi kwe-alloy. Amandla ayo okuphina kwi-dislocations ihambelana nobukhulu kunye neqhezu lomthamo wesigaba se-precipitate. Ifomula yobungqina yile:
f liqhezu lomthamo wesigaba semvula; r ubukhulu besigaba; σa ngamandla ojongano phakathi kwesigaba kunye nematrix. Ifomyula ibonisa ukuba ubukhulu besigaba se-precipitate kunye nencinci iqhezu lomthamo, elincinci amandla ayo okuphina kwi-dislocation, kulula ukuba i-dislocation kwi-alloy iqale, kwaye i-σa0 kwi-alloy iya kuncipha ukusuka kwincopho yokuguga ukuya kwimeko yokuguga kakhulu. Nokuba i-σa0 iyancipha, xa ialloyi isuka kwincopho yokuguga ukuya kwimeko yokuguga kakhulu, ixabiso le-σapp ngexesha lokuqhekeka kwealloyi liyancipha ngakumbi, okukhokelela kuhla okubonakalayo kuxinzelelo olusebenzayo kumda wengqolowa (σapp-σa0). Uxinzelelo olusebenzayo kumda wengqolowa wokuguga ngokugqithisileyo malunga ne-1/5 yaloo nto ekuguga okuphezulu, oko kukuthi, kuncinci ukukrazula kumda wengqolowa kwimeko yokuguga, okubangelwa ukusebenza kakuhle kwe-riveting ye-alloy.
2.2 Ukuphuculwa kweqondo lokushisa le-extrusion kunye nenkqubo yokuguga
Ngokwezi ziphumo zingentla, ukwandisa ukushisa kwe-extrusion kunokunciphisa ubunzulu be-coarse-grained layer, ngaloo ndlela kuvimbele ukuqhekeka kwezinto ngexesha lenkqubo ye-riveting. Nangona kunjalo, phantsi kwesiseko sokwakheka kwe-alloy ethile, ulwakhiwo lwe-extrusion die kunye nenkqubo ye-extrusion, ukuba iqondo lobushushu le-extrusion liphezulu kakhulu, kwelinye icala, ukugoba kunye nokujija idigri yeprofayili iya kuba mandundu ngexesha lenkqubo yokucinywa okulandelayo, ukwenza ukunyamezela kobungakanani beprofayili kungafezeki kwiimfuno, kwaye kwelinye icala, kuya kubangela ukuba i-alloy, inyuse umngcipheko wenkqubo yokutshisa i-alloy ngexesha lokutshisa ngokulula. Ukuqwalasela imeko ye-riveting, inkqubo yobungakanani beprofayili, ifestile yenkqubo yokuvelisa kunye nezinye izinto, ubushushu obufanelekileyo ngakumbi be-extrusion kule alloy ayikho ngaphantsi kwe-485 ℃, oko kukuthi, isampula No.
Iimpawu zomatshini ze-specimen No. Njengoko kuboniswe kwi-Figure 3a, phantsi kwe-180 ℃, ixesha lokuguga landa ukusuka kwi-6 h ukuya kwi-12 h, kwaye amandla okuvelisa izinto azinciphisi kakhulu. Ngaphantsi kwe-185 ℃, njengoko ixesha lokuguga linyuka ukusuka kwi-4 ukuya kwi-12 h, amandla okuvelisa kuqala ayanda kwaye ayancipha, kwaye ixesha lokuguga elihambelana nexabiso eliphezulu lamandla li-5-6 h. Ngaphantsi kwe-190 ℃, njengoko ixesha lokuguga likhula, amandla esivuno ayancipha ngokuthe ngcembe. Ngokubanzi, kumaqondo obushushu amathathu okuguga, okukhona kusezantsi ubushushu bokwaluphala, kokukhona kunyuka amandla aphezulu ezinto. Iimpawu zamandla okuqina kwi-Figure 3b zihambelana namandla okuvelisa kwi-Figure 3a. Ubude kumaqondo obushushu obudala ahlukeneyo aboniswe kuMfanekiso 3c uphakathi kwe-14% kunye ne-17%, kungekho patheni yotshintsho icacileyo. Olu lingelo luvavanya incopho yokuguga ukuya kwinqanaba lokuguga, kwaye ngenxa yomahluko omncinci wokulinga, impazamo yovavanyo ibangela ukuba ipateni yotshintsho ingacaci.
Umzobo.3 Iimpawu zoomatshini bezinto kumaqondo obushushu ahlukeneyo okuguga kunye namaxesha okuguga
Emva kokunyangwa kokuguga okungentla, ukuqhekeka kwamalungu adibeneyo kushwankathelwa kwiThebhile 4. Inokubonwa kwiThebhile 4 ukuba ngokunyuka kwexesha, ukuchithwa kwamalungu adibeneyo kugxininiswe kwinqanaba elithile. Ngaphantsi kwemeko ye-180 ℃, xa ixesha lokuguga lidlula i-10 h, ukubonakala kwe-riveted joint ikwimeko eyamkelekileyo, kodwa ingazinzanga. Ngaphantsi kwemeko ye-185 ℃, emva kokuguga kwi-7 h, ukubonakala kwe-riveted joint ayinazo iintanda kwaye urhulumente uzinzile. Ngaphantsi kwemeko ye-190 ℃, ukubonakala kwe-riveted joint ayinazo iintanda kwaye urhulumente uzinzile. Ukusuka kwiziphumo zovavanyo lwe-riveting, kunokubonwa ukuba ukusebenza kwe-riveting kubhetele kwaye kuzinzile xa i-alloy ikwimeko engaphezulu. Idityaniswe nokusetyenziswa kweprofayili yomzimba, i-riveting kwi-180 ℃/10 ~ 12 h ayihambisani nokuzinza komgangatho wenkqubo yokuvelisa elawulwa yi-OEM. Ukuze kuqinisekiswe ukuzinza kwe-riveted joint, ixesha lokuguga lifuna ukwandiswa ngakumbi, kodwa ukuqinisekiswa kwexesha lokuguga kuya kukhokelela ekunciphiseni ukuveliswa kweprofayili kunye nokunyuka kweendleko. Ngaphantsi kwemeko ye-190 ℃, zonke iisampuli zinokuhlangabezana neemfuno zokuqhekeka kwe-riveting, kodwa amandla ezinto eziphathekayo ayancipha kakhulu. Ngokweemfuno zoyilo lwesithuthi, amandla emveliso ye-6082 alloy kufuneka aqinisekiswe ukuba mkhulu kune-270 MPa. Ke ngoko, iqondo lobushushu lokuguga le-190 ℃ alihambelani neemfuno zamandla ezinto eziphathekayo. Ngexesha elifanayo, ukuba amandla ezinto eziphathekayo aphantsi kakhulu, ubukhulu obushiyekileyo beplate ephantsi ye-riveted joint buya kuba buncinci. Emva kokuguga kwi-190 ℃ / 8 h, i-riveted cross-sectional features ibonisa ukuba ubukhulu obushiyekileyo bu-0.26 mm, obungahambelani nemfuno yesalathisi ye-≥0.3 mm, njengoko kuboniswe kuMfanekiso 4a. Xa kuqwalaselwa ngokubanzi, elona qondo lobushushu lilungele ukuguga liyi-185 ℃. Emva kokuguga kwi-7 h, izinto eziphathekayo ziyakwazi ukuhlangabezana neemfuno ze-riveting, kwaye amandla ahlangabezana neemfuno zokusebenza. Ukuqwalasela ukuzinza kwemveliso yenkqubo ye-riveting kwi-workshop ye-welding, ixesha elifanelekileyo lokuguga licetywayo ukuba linqunywe njenge-8 h. Iimpawu ezinqamlezayo phantsi kwale nkqubo yenkqubo ziboniswa kuMzobo 4b, ohlangabezana neemfuno zesalathisi ezidibeneyo. I-interlocks ekhohlo nasekunene yi-0.90 mm kunye ne-0.75 mm, ehlangabezana neemfuno zesalathisi ze-≥0.4 mm, kunye ne-residual thickness of 0.38 mm.
Itheyibhile 4 Ukuqhekeka kwesampuli No. 2 kumaqondo okushisa ahlukeneyo kunye namaxesha ahlukeneyo okuguga
Umzobo.4 Iimpawu ezinqamlezayo zamalungu adibeneyo angama-6082 asezantsi amacwecwe kwiindawo ezahlukeneyo zokuguga.
3 Isiphelo
Ukuphakama kweqondo lobushushu le-extrusion ye-6082 ye-aluminium alloy profiles, i-short over the surface-grained layered after extrusion. Ubungqingqwa bomaleko obunzulu obucolekileyo bunokunciphisa ngokufanelekileyo uxinzelelo loxinzelelo kumda wengqolowa, ngaloo ndlela uthintele ukuqhekeka kwe-riveting. Uphando lovavanyo lufumanise ukuba elona qondo lobushushu le-extrusion alikho ngaphantsi kwe-485 ℃.
Xa ubukhulu bomgca we-coarse-grained layer ye-6082 ye-aluminium alloy profile iyafana, uxinzelelo olusebenzayo lomda wengqolowa ye-alloy kwimeko yokuguga ngokugqithiseleyo ingaphantsi kwelo kwimeko yokuguga okuphezulu, umngcipheko wokuqhekeka ngexesha le-riveting lincinci, kwaye ukusebenza kwe-riveting ye-alloy kungcono. Ukuqwalasela izinto ezintathu zokuzinza kwe-riveting, i-riveted joint interlocking value, ukuveliswa kokusebenza kobushushu kunye neenzuzo zoqoqosho, inkqubo yokuguga efanelekileyo ye-alloy izimisele ukuba yi-185 ℃ / 8h.
Ixesha lokuposa: Apr-05-2025
