1 Kev Taw Qhia
Nrog rau kev tso tawm ntawm "Kev Tshawb Fawb thiab Kev Siv Tshuab Txhawb Carbon Peak Carbon Neutralization Implementation Plan (2022-2030)" txoj cai, lub tsheb sib tw tau dhau los ua qhov kev xav tsis thoob. Lub cev lub teeb aluminium alloy thiab siab zog steel thiab lwm yam ntaub ntawv, los ntawm kev tsim nyog daim ntawv thov thiab kev faib tawm, tuaj yeem ua tiav lub cev muaj kev nyab xeeb dua thaum ntsuas tus nqi tsim khoom ntawm tag nrho cov txhuas lub cev thiab cov nqi tu yav tom ntej. Nws yog lub tsheb zoo tshaj plaws txhais tau tias.
Nailless riveting thiab piercing tus kheej riveting (Self-Piercing Riveting, SPR) yog txoj hauv kev zoo kom paub txog kev sib txuas ntawm cov hlau thiab txhuas tsis sib xws, tshwj xeeb tshaj yog nailless riveting, tsis xav tau ntxiv rivets, tsis muaj qhov nce ntawm qhov kev sib txuas zoo, thiab tag nrho cov nqi ntawm kev sib txuas yog qis dua li ntawm SPR. Lub leaner sib txuas txheej txheem tseem nyob rau hauv cov txheej txheem thiab kev sim kev tshawb fawb theem hauv Suav teb, thiab tsis tau siv dav hauv cov qauv ntawm lub cev. Hauv txoj kev tshawb no, cov txheej txheem tsis zoo thiab kev ua haujlwm zoo li qub ntawm nailless riveting thev naus laus zis tau muab piv los ntawm kev sib txuas cov hlau thiab txhuas ntawv nrog cov khoom sib txawv thicknesses, thiaj li muab cov khoom xaiv thiab kev sib txuas tsim siv rau kev siv cov cuab yeej nailless riveting hauv lub cev qauv.
2 txheej txheem
Nailless riveting yog txheej txheem kev sib txuas ntawm cov khoom siv hlau stamping, uas siv cov yas hauv zos deformation ntawm ob lossis ntau txheej ntawm cov ntawv hlau los ua kom tiav cov txheej txheem ntawm kev sib sib zog nqus nqus thiab extrusion sib xyaw ua haujlwm, thiab tsim ib qho kev sib tshuam hauv qab lub voj voog ntawm kev sib koom ua ke. Cov ntsiab lus sib txuas los yog duab plaub, kom nws muaj qee qhov tensile zog thiab shear zog. Cov txheej txheem kev sib txuas yog qhia hauv daim duab 1. Cov txheej txheem feem ntau suav nrog kev ua ntej nruj, occlusal, xuas nrig ntaus, tuav tuav thiab ejection. Nailless riveting tuaj yeem siv rau kev sib txuas ntawm cov ntawv zoo ib yam lossis sib txawv nrog gluing, txheej, thiab nplaum sealing yuav tsum tau ua.
Muaj kev ua hauj lwm hardening nyob rau hauv cov txheej txheem ntawm nailless riveting, uas txhim kho cov yield zog ntawm cov khoom thiab lub peev xwm ntawm lub riveted sib koom. Cov profile tsis sib xws ntawm cov hla ntu saib ntawm cov nailless riveted sib koom ua ke yog pom nyob rau hauv daim duab 2. Lub ntsiab tsis yog lub thickness ntawm lub sab sauv phaj caj dab S1, lub sab sauv thiab sab daim hlau Khoom interlocking qhov tob C1, cov sum ntawm lub hauv qab thickness ntawm cov nplooj ntawv sab saud thiab qis ntawm qhov chaw txuas (hauv qab thickness) ST.
3 Cov txheej txheem tsis zoo thiab cov khoom zoo li qub
Kev tshawb fawb ntawm cov txheej txheem tsis sib xws ntawm nailless riveted kev twb kev txuas feem ntau yog siv cov txheej txheem Taguchi thiab cov kev ntsuam xyuas orthogonal los soj ntsuam cov duab tsis xws li lub caj dab thickness thiab interlocking qhov tob ntawm qhov sib koom ua ke saib, txiav txim siab riveting kev taw qhia thiab kev pom zoo ua ke ntawm cov txheej txheem tsis. ; Cov kev tshawb fawb zoo li qub feem ntau yog siv cov hlau sib txawv Static load tsis ua haujlwm ntawm cov ntawv txhuas ua ke, sib piv cov khoom siv ntawm nailless riveted kev twb kev txuas thiab SPR kev twb kev txuas, thiab txheeb xyuas qhov cuam tshuam ntawm cov khoom qib, riveting kev taw qhia, thiab cov khoom tuab ntawm cov khoom siv ntawm nailless riveted. kev sib txuas.
3.1
Cov ntaub ntawv xeem thiab cov txheej txheem
Cov khoom siv xeem yog 5000 series aluminium alloy, thiab cov khoom tuab yog 1.0mm thiab 1.4mm, uas feem ntau siv rau hauv lub cev qauv; steel phaj yog CR3, CR340, thiab thickness yog 0.7mm, 0.8mm, 1mm thiab 1.3mm;
Nailless riveted pob qij txha raug sim rau kev sib koom ua ke shear thiab tensile lub zog los ntawm kev kuaj tsis ua haujlwm zoo li qub. Vim tias qhov sib koom ua ke ib leeg yog ib qho kev sib koom ua ke hauv lub cev qauv, cov qauv qhia tshwj xeeb tau qhia hauv daim duab 3, cov qauv shear loj yog 85mm × 35mm, thiab lub puab tsaig yog 30mm; tus ntoo khaub lig tensile qauv loj yog 120mm × 35mm, thiab txoj kab uas hla ntawm lub qhov chaw yog 10mm. Cov qauv riveted tau raug kuaj xyuas qhov tsis ua haujlwm zoo li qub ntawm lub tshuab ntsuas thoob ntiaj teb CMT4304, thiab qhov ceev ntawm tag nrho cov txheej txheem xeem tau tswj ntawm 10mm / min.
Cov seem saib ntawm cov nailless riveted sib koom yog tau los ntawm cov hlau txiav ntawm cov qauv sib koom ua ke, thiab nws yog inlaid, polished thiab corroded, thiab cov ntaub ntawv sib thooj parameter ntawm cov seem saib yog tau los ntawm kev soj ntsuam nyob rau hauv ib tug optical microscope.
3.2
Txheej txheem parameter xaiv
3.2.1 Kev txiav txim siab ntawm riveting kev taw qhia rau nailless riveting
Txhawm rau txiav txim siab qhov kev taw qhia riveting, CR3 steel phaj thiab 5000 series aluminium alloy raug xaiv, thiab cov khoom sib txawv thicknesses thiab riveting cov lus qhia tau raug xaiv los ntsuas qhov saum toj kawg nkaus ntawm cov seem saib ntawm cov nailless riveted sib koom. Tus nqi sib cuam tshuam qhov tob tau siv los ua lub hauv paus tseem ceeb rau kev txiav txim siab riveting zoo.
Nws tuaj yeem pom los ntawm Table 2 saum toj no tias rau steel-aluminium nailless riveted kev sib txuas, tib cov khoom tuab thiab cov lus qhia sib txawv riveting tuaj yeem tsim kev sib cuam tshuam zoo dua, thiab lub xeev interlocking tsis tshua nkag siab rau cov khoom siv; cov khoom sib txawv thicknesses, riveting kev taw qhia los ntawm nyias mus rau Thaum thicker, lub interlock qhov tob poob ho. Yog li ntawd, cov khoom tuab yog qhov tseem ceeb cuam tshuam rau kev cuam tshuam ntawm kev sib txuas ntawm nailless riveted, thiab cov kev taw qhia ntawm kev sib txuas ntawm nailless riveted yog qhov zoo dua los ntawm cov phaj tuab rau nyias phaj.
3.2.2 Kev txiav txim siab ntawm cov txheej txheem riveting tsis rau nailless riveting
Cov txheej txheem tsis ntawm nailless riveting tuag cuam tshuam rau riveting interlock qhov tob thiab riveting zoo. Txhawm rau kom tau txais cov txheej txheem zoo tshaj plaws, txoj kev Taguchi yog siv los xaiv qhov tuag. mm 5000 series txhuas phaj.
Cov yam ntxwv tswj tau raug xaiv raws txoj kab uas hla, qhov tob tob thiab lub hauv paus tuab, thiab txhua qhov kev tswj hwm muaj 3 qib, saib Table 3.
Qhov tob ntawm kev sib cuam tshuam raws li qhov tshwm sim ntawm cov lus teb, lub suab nrov zoo li roj nplua nyeem, cov tsos mob raws li kev sib koom ua ke los yog tawg hauv daim ntawv. Siv cov cuab yeej sau orthogonal los ua kom zoo, thiab tsim cov kev sim orthogonal L9 ntawm Wangda tus yam ntxwv. Orthogonal xeem sib xyaw ua ke thiab cov txiaj ntsig kev xeem tau qhia hauv Table 4.
Nws tuaj yeem pom los ntawm Table 4 tias qhov sib cuam tshuam qhov tob ntawm Kev Ntsuas 5 yog qhov loj tshaj plaws, yog li nws tau txiav txim siab tias cov txheej txheem zoo tshaj plaws rau nailless riveting yog 5.5 hli hauv punch taub, 1.2 hli hauv qhov tob tob, thiab 0. 8mm hauv qab thickness.
3.3
3.3 Kev sib piv ntawm cov khoom siv kho tshuab
Txij li thaum tsis muaj tus qauv tsim nyog rau kev txiav txim siab cov khoom siv ntawm cov hlau-txhuas pob qij txha hauv kev lag luam, thiab txij li thaum SPR tau siv dav hauv steel-aluminium hybrid lub cev cov qauv, cov khoom siv ntawm SPR pob qij txha yog siv los txiav txim rau cov neeg kho tshuab. cov khoom ntawm nailless riveted pob qij txha. Nyob rau hauv cov xwm txheej ntawm tib cov ntaub ntawv tuab thiab cov khoom siv, ib qho piv txwv-theem sib koom ua ke shear thiab cross tensile static load tsis ua hauj lwm kuaj tau tsim los ntsuas cov shear thiab tensile tsis ua hauj lwm loads ntawm ob txoj kev sib txuas, nailless riveting thiab SPR.
Qib ntawm cov qauv ntsuas steel phaj yog CR3, thiab cov khoom tuab yog 0.8mm; aluminium alloy qib yog 5000 series, thiab cov khoom thickness yog 1.4 hli. Cov lus qhia riveting zoo tshaj plaws tau xaiv rau ob txoj kev sib txuas, ntawm cov nailless riveting yog los ntawm tuab mus rau nyias, thiab SPR yog los ntawm nyias mus rau tuab, thiab los ntawm tawv mus rau mos. Muaj 5 cov qauv hauv txhua pab pawg ntawm cov kev xeem, thiab cov qauv kev thauj mus los thiab kev ua haujlwm tsis ua haujlwm ntawm tensile thiab shear load tsis ua haujlwm ntawm txhua pab pawg ntawm cov qauv tau qhia hauv daim duab 5 txog 8.
3.3.1 Kev soj ntsuam ntawm shear static load tsis ua hauj lwm kuaj
Nws tuaj yeem pom los ntawm cov duab 5 thiab 6 tias nyob rau hauv lub xeev shear load, hom tsis ua hauj lwm ntawm qhov kev sib txuas ntawm nailless riveted yog lub caj dab tawg ntawm lub phaj sab saud, qhov siab tshaj plaws tsis ua haujlwm load yog 1620N, thiab qhov nruab nrab tsis ua haujlwm. tshem tawm yog 0.46mm; hom tsis ua hauj lwm ntawm SPR kev twb kev txuas yog lub kua muag ntawm lub phaj sab sauv, Qhov siab tshaj plaws tsis ua hauj lwm load yog 2364N, thiab qhov nruab nrab tsis ua hauj lwm hloov chaw yog 4.95 hli.
Kev tsom xam ntxiv qhia tau hais tias nyob rau hauv lub xeev shear load, ob leeg ntawm lawv muaj qee yam yas tsis muaj zog nqus, thiab lub zog shear ntawm cov nailless riveted sib koom mus txog 68.5 feem pua ntawm SPR, tab sis qhov nruab nrab ntawm qhov kev sib hloov ntawm cov nailless riveted sib koom yog qis dua thaum lub Qhov siab tshaj plaws tsis ua hauj lwm tshwm sim Nyob rau hauv cov nqe lus ntawm SPR, nws tsuas yog 9.3 feem pua ntawm SPR.
Kev soj ntsuam ntxiv qhia tau hais tias nyob rau hauv lub xeev tensile load, qhov tsis ua hauj lwm ntawm cov pob qij txha ntawm ob txoj kev sib txuas yog nkig tawg, tsis muaj cov yas deformation tsis muaj zog, lub zog tensile ntawm nailless riveting yog li ntawm 60.6 feem pua ntawm SPR, thiab qhov nruab nrab ntawm kev hloov chaw. nailless riveting tsis ua hauj lwm kuj qis dua SPR, ncav cuag 65 feem pua ntawm SPR. Hauv kev xaus, piv nrog SPR kev twb kev txuas, txawm hais tias cov cuab yeej cuab tam ntawm cov nailless riveted sib koom raug txo, nws tuaj yeem siv rau hauv qhov chaw tsis yog lub luag haujlwm thauj khoom lub cev.
3.4
Kev txheeb xyuas cov yam cuam tshuam rau cov khoom zoo li qub
Txhawm rau txhawm rau txheeb xyuas qhov ua tau zoo li qub ntawm cov nailless riveted pob qij txha, siv cov nailless riveted pob qij txha los tsim cov txheej txheem tsim rau lub cev qauv, los ntawm peb yam ntawm cov khoom qib, riveting kev taw qhia, thiab cov khoom tuab, ua ke nrog kev sib koom ua ke hla ntu saib. morphology tsis thiab static load tsis ua hauj lwm kev ntsuam xyuas Cov ntaub ntawv tau siv los soj ntsuam nws cov cawv ntawm qhov zoo li qub kev ua tau zoo ntawm steel-aluminium nailless kev twb kev txuas.
Cov qauv loj thiab cov qauv xeem yog raws li saum toj no. Hauv kev xeem, qib thiab thickness ntawm cov khoom siv nyob rau hauv qhov qis-load ntawm lub cev qauv raug xaiv. mm, 1.3mm, kev sib xyaw ua ke thiab cov txiaj ntsig kev xeem tau pom nyob rau hauv Table 5.
3.4.1 Cov nyhuv ntawm cov khoom qib
Thawj plaub qhov sib xyaw ua ke nrog cov khoom tuab ntawm 1.0mm raug xaiv los txheeb xyuas qhov cuam tshuam ntawm cov khoom qib ntawm kev ua haujlwm zoo li qub ntawm kev sib txuas nailless riveted. Cov txiaj ntsig kev xeem xws li qhov siab tshaj plaws shear force, siab tshaj plaws tensile quab yuam, interlock qhov tob tus nqi thiab tsis ua hauj lwm hom yog qhia nyob rau hauv Table 6.
Los ntawm kev txheeb xyuas hauv daim duab 9, nws tuaj yeem pom tau tias cov shear tsis ua haujlwm feem ntau yog nyob ntawm lub zog ntawm txheej sab saud. Thaum lub zog ntawm cov txheej txheej sab saud yog siab dua li ntawm cov txheej txheem qis, lub shear tsis ua haujlwm feem ntau yog qhov tawg ntawm qhov sib txuas ntawm cov khoom siv sab saud; Nrog rau qhov nce ntawm lub zog ntawm cov txheej txheem qis, lub shear tsis ua hauj lwm hom hloov los ntawm kev rub tawm ntawm qhov kev sib txuas mus rau qhov tawg ntawm qhov sib txuas; Zoo sib xws, lub zog shear feem ntau yog nyob ntawm lub zog ntawm cov khoom siv sab saud, thiab nce nrog qhov nce ntawm lub zog ntawm cov khoom siv sab saud.
Nyob rau hauv tib lub thickness ntawm cov khoom, qhov tsis ua hauj lwm hom ntawm tus ntoo khaub lig nro yog rub-tawm ntawm qhov kev twb kev txuas taw tes, uas tsis muaj dab tsi ua rau cov khoom qib; lub tensile load txo nrog qhov nce ntawm cov khoom siv zog.
Qhov sib cuam tshuam qhov tob yuav txo qis thaum cov khoom thauj khoom nce ntxiv, vim tias cov khoom siv muaj zog dua, qhov nyuaj dua rau cov khoom deform thaum lub sij hawm kev sib txuas, ua rau kev sib tshuam nyuaj dua.
3.4.2 Cov nyhuv ntawm riveting kev taw qhia
Ib yam li ntawd, raws li cov ntaub ntawv ntawm thawj plaub qhov sib xyaw ua ke, kev cuam tshuam ntawm riveting kev taw qhia ntawm kev ua haujlwm zoo li qub ntawm kev sib txuas nailless riveted tuaj yeem txheeb xyuas, raws li qhia hauv daim duab 10.
Kev sib txuas kev taw qhia ntawm nailless riveting yog los ntawm siab load mus rau tsawg zog. Txawm hais tias muaj qhov sib txawv me ntsis hauv qhov sib txuas qhov tob, qhov shear load nce ntau. Kev sib xyaw ua ke 1 yog 53.4 feem pua siab dua li kev sib xyaw ua ke 2, thiab kev sib xyaw ua ke 3 yog 45.6 feem pua siab dua ua ke 4; Cov kev taw qhia kev sib txuas yog siab Los ntawm lub zog mus rau lub zog qis, txawm hais tias qhov sib txawv ntawm kev sib tshuam qhov tob tsis loj, lub zog tensile tau txo qis. Kev sib xyaw ua ke 1 yog 33.6 feem pua qis dua li kev sib xyaw ua ke 2, thiab kev sib xyaw ua ke 3 yog 29.4 feem pua qis dua kev sib xyaw 4.
3.4.3 Cov nyhuv ntawm cov khoom Thickness
Cov ntaub ntawv xaiv ua ke thiab cov ntaub ntawv xeem tau pom nyob rau hauv Table 7, thiab qhov cuam tshuam ntawm cov khoom tuab ntawm cov txheej txheem nailless riveting thiab static load tsis ua hauj lwm yog muab piv thiab soj ntsuam.
Nws tuaj yeem pom los ntawm Table 7 thiab daim duab 11 tias, rau lub zog shear, lub thickness ntawm cov khoom siv sab saud, qhov sib txawv ntawm qhov tob dua, lub caj dab tuab dua, lub zog shear ntau dua; lub thicker cov khoom qis dua, qhov nyuaj dua qhov deformation ntawm cov khoom siv sab saud, txawm hais tias qhov sib cuam tshuam qhov tob nce, tab sis qhov thinner lub caj dab tuab, qhov qis dua lub zog shear. Hais txog lub zog tensile, lub thicker lub sab sauv thiab qis txheej, ntau dua interlocking qhov tob thiab lub zog tensile ntau dua.
duab
Yog li ntawd, txhawm rau txhim kho lub zog shear, yuav tsum muaj txheej txheej tuab dua lossis txheej nyias nyias; qhov nce nyob rau hauv lub thickness ntawm lub Upper thiab qis txheej yuav ua rau kom lub zog tensile.
4 Kev xaus
a. Txawm hais tias qhov kev ua tau zoo li qub ntawm qhov kev sib txuas ntawm cov ntsia hlau tsis muaj riveted qis dua li ntawm SPR, nws tuaj yeem siv rau qhov chaw tsis yog lub ntsiab ntawm lub cev thauj khoom;
b. Lub zog shear yog qhov zoo sib xws nrog lub zog ntawm cov khoom siv sab saud; lub zog tensile tsis zoo cuam tshuam nrog lub zog ntawm cov khoom sib txuas;
c. Cov kev taw qhia riveting yog los ntawm high-strength phaj mus rau tsawg-lub zog, thiab lub zog shear yog siab dua; cov kev taw qhia riveting yog los ntawm cov phaj uas tsis muaj zog mus rau lub zog siab, thiab lub zog tensile siab dua;
d. Lub thickness ntawm cov khoom siv sab saud thiab cov khoom siv qis qis dua muaj zog dua shear; qhov nce ntawm cov khoom siv sab saud thiab qis dua tuaj yeem ua kom lub zog tensile.
