Tsis ntev los no kev txhim kho nyob rau hauv kuj welding

Nyob rau hauv xyoo tas los no, nrog rau kev loj hlob sai ntawm kev lag luam xws li tsheb, aerospace, kev tsim kho, kev thauj mus los, thiab cov khoom siv teeb pom kev lag luam, cov khoom lag luam sib raug tau raug hloov kho tas li thiab tsim nyob rau hauv lawv cov ntaub ntawv, cov qauv, thiab daim ntawv thov, thiab cov kev cai rau kev tsim khoom. zoo tau raug txhim kho tas li. Raws li kev siv cov khoom siv dav siv hauv kev tsim cov khoom lag luam, kev siv vuam vuam kuj tau ntsib cov teeb meem loj.
Vim yog qhov nyuaj ntawm cov txheej txheem vuam tsis zoo, nws suav nrog ntau yam cuam tshuam, xws li cov khoom siv welded, tam sim no, electrode siab, lub sij hawm energization, electrode kawg lub ntsej muag thiab loj, shunt, deb ntawm ntug ntawm lub solder sib koom, phaj. thickness, thiab qhov chaw ntawm lub workpiece. Cov xwm txheej no muaj kev cuam tshuam thiab muaj kev sib cuam tshuam. Nyob rau tib lub sijhawm, qhov tsis pom kev ntawm weld nuggets thaum lub sijhawm vuam thiab qhov xwm txheej tam sim ntawd ntawm cov txheej txheem vuam ua rau muaj teeb meem loj rau kev tswj kev vuam zoo. Txhawm rau ua kom tau raws li qhov xav tau ntawm kev tsim kho kev lag luam thiab kev siv cov ntaub ntawv tshiab, txheej txheem, thiab cov khoom lag luam, thiab ua kom tau raws li cov kev xav tau ntawm kev tsim khoom niaj hnub no, kev lag luam vuam hauv ntau lub teb chaws tau ua ntau yam haujlwm hauv kev siv vuam tshuab thiab cov cuab yeej tswj kev lag luam. kaum xyoo dhau los, feem ntau tsom rau cov hauv qab no: 1) Kev tshawb fawb hauv computer simulation ntawm cov txheej txheem vuam tsis kam
2) Kev tshawb fawb txog Weldability ntawm Cov Khoom Tshiab
3) Kev Tshawb Fawb Txog Kev Saib Xyuas Kev Ua Haujlwm Zoo rau Kev Tiv Thaiv Vuam
Kev tshawb fawb hauv computer simulation ntawm kev tiv thaiv vuam txheej txheem
Resistance vuam yog cov txheej txheem nyuaj uas suav nrog hluav taws xob, hloov hluav taws xob, hluav taws xob, metallurgy, thiab mechanics, uas suav nrog cov txheej txheem hluav taws xob thiab hluav taws xob hloov hluav taws xob thaum lub sij hawm vuam, hlau melting thiab solidification, theem transformation thaum lub sij hawm txias, vuam kev nyuaj siab thiab deformation, thiab lwm yam. welded sib koom ua ke, nws yog ib qho tsim nyog los tswj cov yam ntxwv no. Cov txheej txheem welding cov txheej txheem ib txwm muaj thiab cov txheej txheem parameter formulation yog tau los ntawm cov txheej txheem kev sim thiab cov ntaub ntawv empirical. Txawm li cas los xij, nyob rau hauv cov nqe lus ntawm txoj kev loj hlob, nrog rau kev nce qib ntawm computer technology, cov lej simulation txoj kev yuav ua lub luag haujlwm tseem ceeb. Piv txwv li, kev tsim cov qauv tshiab engineering siv cov khoom siv xws li cov hlau muaj zog, tshwj xeeb tshaj yog rau qee qhov tseem ceeb ntawm cov qauv aerospace, tsis muaj kev paub txog kev vam khom. Kev khaws cov ntaub ntawv nkaus xwb los ntawm kev sim yuav siv sijhawm ntev thiab tus nqi, thiab kev sim lossis tsis ua haujlwm yuav ua rau muaj kev lag luam loj. Hauv qhov no, cov txheej txheem lej yuav siv lawv lub peev xwm tshwj xeeb thiab qhov zoo. Ntev npaum li qhov siv tau ntawm cov lej hauv kev daws teeb meem qee yam tau pom los ntawm qee qhov kev sim ua pov thawj tsawg, ntau qhov kev tshuaj ntsuam xyuas ua haujlwm tuaj yeem ua tau los ntawm cov khoos phis tawj, tsis tas yuav muaj kev sim ua haujlwm ntau hauv kev cob qhia thiab chaw soj nstuam. Qhov no txuag cov neeg ua haujlwm, cov khoom siv, thiab sijhawm, thiab muaj txiaj ntsig zoo rau kev lag luam. Thaum muaj ntau yam welding phenomena tuaj yeem simulated los ntawm lub computer, peb tuaj yeem txiav txim siab qhov kev tsim qauv zoo, cov txheej txheem zoo tshaj plaws, thiab cov txheej txheem vuam rau vuam ntau yam qauv thiab cov khoom siv los ntawm cov tshuab computer. Tsis tas li ntawd, cov lej simulation yog dav siv los txheeb xyuas lub zog thiab kev ua haujlwm ntawm cov pob qij txha welded.
Vim qhov tsis pom kev ntawm qhov tsim ntawm qhov chaw welding nuggets, kev soj ntsuam kev sim yog qhov nyuaj heev, thiab kev tsim cov qauv theoretical yog qhov muaj txiaj ntsig zoo rau nws txoj kev tsom xam thiab kev tshawb fawb. Txij li thaum Nied tau tsim thawj qhov chaw finite qhov chaw vuam tsom xam qauv hauv xyoo 1984, muaj ntau yam qauv tsim qauv rau qhov chaw vuam uas tau muab cov ntsiab lus theoretical rau kev tsim khoom tiag tiag.
Nrog rau kev siv qhov tob ntawm finite element lej simulation txoj hauv kev ntawm kev tshawb fawb vuam, nyob rau xyoo tas los no, kev tshawb fawb thoob ntiaj teb hauv daim teb no tau tsom mus rau peb yam hauv qab no:
1. Kev siv lub finite element simulation txoj kev ntawm hluav taws xob thermal mechanical coupling
Qhov kev tiv thaiv qhov chaw vuam txheej txheem yog txheej txheem nyuaj uas muaj kev cuam tshuam ntawm hluav taws xob, thermal, mechanical, thiab metallurgical phenomena. Cov txheej txheem no suav nrog cov teeb meem hluav taws xob, teeb meem hluav taws xob, thiab teeb meem thermal elastoplastic deformation. Yog li ntawd, nws yog ib qho tsim nyog yuav tau xav txog kev sib cuam tshuam thiab kev sib txuas ntawm txhua qhov teeb meem no, nrog rau kev hloov pauv hauv kev sib cuag ntawm lub workpiece electrode thiab workpiece interface tshwm sim los ntawm lub siab, thiab qhov tseem ceeb ntawm thermal deformation hauv cov kev cuam tshuam no. Kev hais lus nruj me ntsis, kev daws cov teeb meem sib txuas no yuav tsum ua kom daws tau qhov hluav taws xob, thermal teb, thiab lub zog teb. Yog li ntawd, nyob rau hauv xyoo tas los no, lub finite ntsiab tsom xam ntawm qhov chaw welding tau maj mam hloov zuj zus los ntawm kev cais hluav taws xob teb, thermal teb, thiab quab yuam teb tsom mus rau hluav taws xob thermal mechanical coupling tsom xam. Piv txwv li, American scholar Sun, X. siv hluav taws xob thermal mechanical coupling finite element simulation los kawm txog kev loj hlob thiab thermal tis ntawm weld nuggets nyob rau hauv qhov chaw vuam txheej txheem, thiab kawm txog qhov chaw vuam ntawm aluminium alloy thiab steel phaj nrog cov ntaub ntawv hloov pauv nruab nrab. Cov txiaj ntsig simulation tau raug sim ua pov thawj: cov qauv no tuaj yeem siv rau hauv cov txheej txheem xaiv electrode kom txo vuam deformation thiab txhim kho vuam zoo; Kauslim kws tshawb fawb Cha, BW tau txais qhov seem kev ntxhov siab tom qab vuam thiab qhov chaw vuam tsis zoo uas cuam tshuam cov kev ntxhov siab seem los ntawm cov hluav taws xob thermal mechanical tsom ntawm qhov chaw vuam txheej txheem ntawm 304 stainless hlau; Feng, Z. thiab lwm cov kws tshawb fawb tau tsim ib qho kev sib xyaw ua qauv los simulate cov txheej txheem thiab kev ua tau zoo ntawm qhov chaw vuam tsis kam. Nws muab cov phenomena hauv lub cev thiab cov xwm txheej thauj khoom hauv qhov chaw vuam. Txoj kev no muaj peb ntu: tus qauv txheej txheem, tus qauv microscopic, thiab qauv qauv. Nws tuaj yeem ntsuas qhov ua tau zoo ntawm qhov chaw vuam pob qij txha nyob rau hauv qhov kev txiav txim ntawm hluav taws xob, cua sov, thiab quab yuam; Nyob rau hauv txoj kev kawm ntawm qhov chaw welding ntawm aluminium alloys, Japanese kws tshawb fawb De, A tau siv lub finite qauv qauv ua ke nrog hluav taws xob, cua sov, thiab quab yuam los kwv yees txoj kab uas hla thiab qhov tob ntawm lub weld nugget, nrog rau txoj kab uas hla ntawm electrode thiab lub phaj nyob rau hauv sib txawv vuam tam sim no, vuam lub sij hawm, thiab hluav taws xob quab yuam. Nws tau raug txheeb xyuas tias tus qauv no muaj txiaj ntsig zoo rau kev tshawb nrhiav offline ntawm kev cuam tshuam ntawm vuam tsis nyob ntawm qhov loj ntawm qhov sib koom ua ke.
Kev txheeb xyuas qhov tseeb ntawm Computer Simulation
Nrog rau kev siv ntau zuj zus ntawm kev siv computer simulation txoj hauv kev ua haujlwm vuam txheej txheem kev tshawb fawb, txhawm rau txhim kho nws ntxiv rau kev tsim khoom, nws yuav tsum xav txog ntau npaum li cas yuam kev no simulation txoj kev muaj? Yuav ua li cas txhawm rau txhim kho qhov tseeb ntawm cov lej simulation kom cov txiaj ntsig tau los ze zog rau qhov tseeb vuam qhov xwm txheej. Tsis ntev los no, qee cov kws tshawb fawb txawv teb chaws tau tshawb fawb tshwj xeeb hauv cheeb tsam no, xws li American kws tshawb fawb Cavendish, James C., uas tau hais hauv ib tsab xov xwm hais tias qhov teeb meem tseem ceeb hauv kev ntsuam xyuas cov qauv siv computer simulation yog los txiav txim seb lawv puas yog txaus. Feem ntau, Bayesian theorem statistical strategies yog siv los tshuaj xyuas qhov ua yuam kev ntau ntawm kev suav simulation. Txawm li cas los xij, nyob rau hauv cov xwm txheej uas muaj ntau yam khoom siv, tsis paub tsis meej, thiab cov ntaub ntawv loj, kev txheeb xyuas kev txheeb xyuas yuav nyuaj heev. Hasselman, Timothy, thiab lwm tus kws tshawb fawb tau siv hluav taws xob thermal mechanical finite element qauv los tshuaj xyuas qhov chaw vuam txheej txheem ntawm aluminium alloys, xam qhov loj ntawm cov weld nuggets thiab deg indentation, thiab siv cov ntsiab lus tseem ceeb raws li cov qauv tsis paub meej. Qhov kev kwv yees qhov tseeb ntawm cov txheej txheem finite yog tau los ntawm kev txheeb xyuas cov kab nruab nrab square deviation ntawm weld nugget loj thiab indentation txheeb cais.
Muaj kev siv computer simulation
Khoos phis tawj lej simulation muaj qhov zoo xws li tus nqi qis, hloov pauv hloov pauv, thiab yooj yim. Txawm li cas los xij, feem ntau ntawm nws tam sim no siv rau kev suav offline thiab simulation. Yuav ua li cas siv txoj kev no kom zoo rau kev ntsuam xyuas online thiab kev tswj cov vuam zoo hauv kev tsim khoom kuj tau dhau los ua qhov tseem ceeb ntawm kev tshawb fawb los ntawm cov kws tshawb fawb vuam hauv xyoo tas los no. Danish kws tshawb fawb Zhang thiab Wenqi tau tsim cov txheej txheem tshiab finite raws li vuam software, SORPAS, raws li kev tshawb fawb txog kev lag luam mus sij hawm ntev thiab kev koom tes hauv kev lag luam, rau kev simulating tsis kam projection vuam thiab qhov chaw vuam txheej txheem. Txhawm rau ua kom cov software raug siv ncaj qha los ntawm cov kws tshaj lij thiab cov kws tshaj lij hauv lub Hoobkas, tag nrho cov kev tsis sib haum xeeb hauv kev vuam vuam raug txiav txim siab thiab txiav txim siab siv hauv software. Cov software no txhawb nqa Windows tus phooj ywg interface, hloov pauv tau yooj yim, thiab tso cai rau kev hloov pauv geometric tsim ntawm workpieces thiab electrodes. Parameter nqis yog zoo li cov tshuab vuam, thiab nws tuaj yeem siv rau hauv kev lag luam los txhawb cov khoom tsim thiab kev ua kom zoo dua qub. Tam sim no cov tuam txhab xws li Volkswagen, Volvo, Siemens, thiab ABB yog txhua tus siv cov software no. Li thiab Wei los ntawm University of Washington hauv Tebchaws Meskas tau tshaj tawm cov qauv kev ntsuas qhov zoo ntawm qhov chaw sib cuag. Nws siv cov qauv kev txheeb xyuas qhov kawg los sawv cev cov kev hloov pauv hauv thaj chaw tiv tauj thiab siv nws online raws li cov txiaj ntsig simulation. Los ntawm kev sim, nws tau pom tias txoj kev no tau ua tiav nyob rau hauv qhov sib txawv ntawm qhov sib txawv ntawm cov electrode, lub zog hluav taws xob, lub sijhawm vuam, thiab cov dej ntws. Nws yuav muab cov ntaub ntawv tseem ceeb rau kev tiv thaiv vuam xyuas thiab tswj.
Kev tshawb fawb txog Weldability ntawm Cov Khoom Tshiab
Nrog rau txoj kev loj hlob sai ntawm kev lag luam, cov kev xav tau siab dua tau muab tso rau pem hauv ntej rau kev ua haujlwm ntawm cov khoom lag luam (tshwj xeeb yog tsheb) cov ntaub ntawv plhaub, uas tau txhawb kev hloov kho thiab hloov cov khoom siv. Piv txwv li, txhawm rau txhim kho corrosion kuj ntawm lub tsheb casings thiab txuas ntxiv lub neej kev pab cuam ntawm lub tsheb, galvanized steel daim hlau yog dav siv nyob rau hauv lub tsheb lub cev manufacturing es tsis txhob ntawm cov khaub thuas-kuav los tiag steel daim hlau; Txhawm rau txo qhov hnyav tag nrho ntawm lub cev lub cev thiab txuag lub zog siv, cov tuam txhab tsheb loj thoob ntiaj teb tab tom tsim tsheb nrog aluminium alloy lossis lub cev muaj zog steel. Vim muaj kev siv dav dav ntawm qhov chaw vuam txoj hauv kev hauv kev sib dhos thiab tsim cov qauv phaj nyias xws li lub cev tsheb, nws tau dhau los ua txoj haujlwm tseem ceeb los kawm txog qhov chaw vuam kev ua tau zoo ntawm cov ntaub ntawv tshiab xws li aluminium alloys, galvanized steel daim hlau, thiab high-strength steel los xyuas kom meej vuam zoo. Nyob rau hauv xyoo tas los no, cov neeg ua haujlwm vuam los ntawm ntau lub teb chaws tau ua ntau qhov kev tshawb fawb thiab kev tshawb fawb hauv cheeb tsam no, thiab tau ua tiav qee qhov txiaj ntsig.
Kev tshawb fawb txog qhov Resistance Spot Welding ntawm 1 Aluminium Alloy
Aluminium alloy muaj cov yam ntxwv ntawm qhov qis melting point, tsis tshua muaj zog tawm los, zoo conductivity thiab thermal conductivity, thiab lub xub ntiag ntawm nto oxide zaj duab xis, uas tau coj teeb meem loj rau qhov chaw vuam. Nyob rau hauv xyoo tas los no, cov kws tshaj lij vuam los ntawm ntau lub teb chaws tau ua cov kev tshawb fawb hauv qab no:
Hauv kev tshawb fawb txog kev ua neej nyob ntawm aluminium alloy qhov chaw vuam electrodes, Lum thiab L los ntawm University of Waterloo hauv Tebchaws Meskas tau siv cov tshuab electron microscopy, SEM / EDX, XRD thiab lwm txoj hauv kev los kawm txog lub neej ntawm 5182 aluminium alloy qhov chaw vuam electrodes. Txoj kev tshawb no qhia tau hais tias los ntawm electrode degradation mus rau qhov kawg tsis ua hauj lwm, nws tsuas yog mus txog plaub theem: txhuas tev, txhuas thiab tooj liab alloying, electrode kawg lub ntsej muag pitting, thiab electrode kawg lub ntsej muag pitting. Raws li cov pitting thiab pitting originated los ntawm txhuas tev thiab alloying, tus sau ntseeg hais tias ib txwm tu ntawm lub electrode nto yuav ua rau kom lub electrode lifespan, uas yog zoo rau daim ntawv thov ntawm txhuas alloy nyob rau hauv automotive ntau lawm; Fresz, B los ntawm University of California hauv Tebchaws Meskas, tau kawm txog cov txiaj ntsig ntawm alloy muaj pes tsawg leeg ntawm electrode lub neej ntawm tooj liab electrodes. Cov khoom siv tooj liab sib txawv xws li Cu Cr, Cu Zr, Cu Cr Zr, Cu Be tau siv hauv kev sim; Cov kws tshawb fawb xws li Dorn thiab Lutz tau npaj siv cov khoom siv hluav taws xob sib xyaw rau qhov chaw vuam aluminium alloys txhawm rau txhim kho lawv txoj sia. Lawv tau kawm txog kev siv cov khoom siv hluav taws xob sib xyaw nrog tungsten embedded ntawm qhov kawg ntawm chromium zirconium tooj liab electrodes rau vuam aluminium alloys, thiab pom tias electrode lifespan yuav nce 1.5 mus rau 2 zaug.
Hauv kev tshawb fawb ntawm aluminium alloy qhov chaw vuam tshuab, cov kws tshawb fawb xws li Sari thiab H. tau ua cov txheej txheem aluminium alloy qhov chaw vuam txheej txheem los kawm txog kev sib raug zoo ntawm electrode contact radius thiab tiv thaiv thaum lub sij hawm aluminium alloy qhov chaw vuam, nrog rau kev sib raug zoo ntawm electrode contact radius. thiab thaj chaw sib cuag ntawm workpiece thiab workpiece; Cho, Y los ntawm University of Michigan hauv Tebchaws Meskas, tau siv cov kev tshawb fawb sim los sib piv cov txheej txheem kev sib tsoo ntawm aluminium alloy thiab hlau. Raws li cov hniav nkhaus uas tau los ntawm qhov kev sim, qhov muaj vuam tam sim no ntau yam thiab khawm kab tom qab vuam taw tes tsis ua hauj lwm tau txiav txim siab, thiab ob qhov kev ntsuas no tau siv los ntsuas qhov chaw vuam zoo ntawm aluminium alloy thiab hlau. Qhov kev sim tau pom tias qhov loj ntawm electrode muaj qhov cuam tshuam loj rau lub pob txoj kab uas hla tom qab steel vuam taw tes tsis ua hauj lwm, tab sis tsis muaj kev sib raug zoo nrog txhuas vuam taw tes, thiab khawm txoj kab uas hla tom qab txhuas vuam taw tes tsis ua hauj lwm fluctuates zoo heev.
Tsis tas li ntawd, finite element simulation ntawm aluminium alloy qhov chaw vuam txheej txheem kuj yog ib qho kev tshawb fawb kub ntawm cov kws tshawb fawb los ntawm ntau lub teb chaws hauv xyoo tas los no.
Kev tshawb fawb txog qhov Resistance Spot Welding ntawm 2 High Strength Steel
Advanced high-strength steel muaj qhov zoo ntawm lub zog siab, zoo formability, siab ci hardening kev ua tau zoo, siab zog nqus tus nqi thiab qaug zog, nrog rau kev ua tau zoo los tiv thaiv kev sib tsoo. Yog li ntawd, nws daim ntawv thov nyob rau hauv lub teeb yuag ntawm lub tsheb yog nce nyob rau hauv ib hnub twg, thiab kev tshawb fawb ntawm lub weldability ntawm kuj welding ntawm high-lub zog steel kuj tau tshwm sim. Tam sim no, cov kws tshaj lij vuam los ntawm ntau lub teb chaws feem ntau tsom mus rau kev sib koom tes ntawm ntau lub zog steels, kev cuam tshuam ntawm vuam specification tsis nyob rau hauv microstructure thiab cov khoom ntawm welded pob qij txha, thiab optimization ntawm vuam cov txheej txheem thiab cov txheej txheem nyob rau hauv kuj welding ntawm high-lub zog. hlau. Piv txwv li, cov kws tshawb fawb xws li Shi thiab G los ntawm TWI Global Center for Materials Connection Technology hauv UK tau kawm txog kev hloov kho qhov chaw vuam cov txheej txheem rau cov hlau muaj zog thiab cov teebmeem ntawm cov khoom siv lub zog thiab vuam quenching ntawm kev ua haujlwm ntawm cov pob qij txha. ; Cov kws tshawb fawb Nyij Pooj Otani, Tadayuki, thiab lwm tus tau ua txoj kev tshawb fawb txog kev tiv thaiv qhov chaw vuam cov yam ntxwv ntawm ultra-fine grained high-strength steel. Txoj kev tshawb nrhiav pom tias vim qhov sib txawv ntawm cov hluav taws xob tiv thaiv thiab lub zog ntawm cov hlau muaj zog ntawm qhov kub thiab txias piv rau cov hlau tsis muaj cov pa roj carbon tsawg, tau txais qhov loj tib yam ntawm cov khoom siv vuam thaum lub sij hawm vuam yuav tsum muaj qhov vuam tam sim no ntau dua li cov pa roj carbon tsawg. Nyob rau tib lub sijhawm, cov pa roj carbon sib npaug ntawm cov phaj steel no tsawg heev. Txawm hais tias cov qauv tseem ceeb ntawm weld nuggets tom qab welding yog martensite, qis-carbon muaj pes tsawg leeg txwv lub hardening ntawm weld nuggets. Yog li ntawd, qhov chaw welded pob qij txha ntawm cov khoom no tuaj yeem tau txais lub zog tensile shear zog thiab ntsug tensile zog yam tsis muaj tempering; Fabkis tus kws tshawb fawb Mimer, M tau npaj ib txoj hauv kev los txhim kho qhov chaw vuam kev ua tau zoo ntawm cov hlau muaj zog thiab ultra-siab zog steel los ntawm cov txheej txheem vuam tempering los ntawm kev tshawb fawb; Cov kws tshawb fawb Nyij Pooj Sakuma thiab Yasuharu kuj tau tshawb fawb txog qhov chaw vuam weldability ntawm lub zog siab galvanized steel daim hlau.
Kev tshawb fawb txog Kev Tiv Thaiv Spot Vuam ntawm 3 Galvanized Steel Phaj
Txhawm rau txhim kho corrosion kuj ntawm cov khoom, ntau hom galvanized steel phaj tau nce siv hauv kev lag luam xws li tsheb thiab khoom siv hauv tsev. Raws li kev sib txawv ntawm cov txheej txheem galvanizing thiab cov khoom sib xyaw, galvanized steel phaj tau muab faib ua: electroplated galvanized phaj, kub-dip galvanized phaj, Zn-Ni alloy coated phaj, Zn-Fe alloy coated phaj, thiab lwm yam. coated hlau piv rau tsawg-carbon steel, qhov chaw vuam kev ua tau zoo ntawm galvanized steel phaj yog qhov sib txawv ntawm tib hom hlau phaj uas tsis tau galvanized. Nyob rau hauv cov nqe lus ntawm nws cov kev ua tau zoo, cov kev xav tau siab dua yog muab tso rau ntawm qhov zoo ntawm cov pob qij txha, uas yog, thaum lub sij hawm vuam, nws yog ib qho tsim nyog los xyuas kom meej tias cov pob qij txha muaj zog txaus tsim thaum tseem tiv thaiv cov txheej txheem tsim nyog.
Vim muaj teeb meem ntawm qhov chaw vuam thiab weldability ntawm galvanized steel daim hlau, cov neeg ua haujlwm vuam los ntawm ntau lub teb chaws tau ua kev tshawb fawb dav dav ntawm kev vuam ntawm cov hlau phaj hauv xyoo tas los no, tsom rau cov txheej txheem vuam tshwj xeeb, cov lej simulation ntawm cov txheej txheem vuam, electrode lub neej, thiab lwm yam teeb meem.
Tam sim no, kev tshawb fawb ntawm cov txheej txheem vuam ntawm galvanized steel daim hlau yog qhov pib paub tab thoob ntiaj teb, thiab kev tshawb fawb ntxiv hotspots feem ntau tsom mus rau kev txhim kho lub neej kev pab cuam ntawm qhov chaw vuam electrodes rau galvanized steel daim hlau, xws li siv dispersed ntxiv dag zog rau tooj liab alloys los yog txhim kho cov kev pab cuam. lub neej ntawm electrodes los ntawm kev kho mob qis.
Kev tshawb fawb txog Kev Saib Xyuas Kev Ua Zoo rau Kev Tiv Thaiv Vuam
Vim yog qhov dav, qhov tseem ceeb, thiab tus neeg sawv cev daim ntawv thov ntawm kev siv vuam vuam tshuab, kom ntseeg tau tias vuam zoo tau dhau los ua lub hom phiaj tseem ceeb ntawm kev tshawb fawb vuam vuam. Spot welding zoo tswj yeej ib txwm yog ib qho ntawm cov ntsiab lus tseem ceeb uas cov kws tshawb fawb hauv kev lag luam vuam hauv tsev thiab txawv teb chaws tau cog lus rau kev tshawb fawb. Piv txwv li, Nyiv Welding Association tau tsim ib pab pawg tshawb fawb rau qhov chaw vuam zoo xyuas thiab kuaj, thiab Tebchaws Meskas kuj tau ua ib txoj haujlwm tshawb fawb 2 hli los daws qhov chaw vuam hauv kev lag luam tsheb. Tam sim no, ib qho kev sib tw loj uas cov kws tswj xyuas cov txheej txheem vuam yog los tshawb nrhiav kev txhim khu kev qha, tus nqi qis, thiab tsis muaj kev puas tsuaj los ntawm kev paub qhov zoo ntawm cov pob qij txha thiab kwv yees lawv lub zog ntawm lub sijhawm.
Nyob rau hauv xyoo tas los no, kev tshawb fawb txog kev saib xyuas zoo ntawm kev siv vuam vuam tau nce siab, thiab nws txoj kev thiab cov txheej txheem tau nce zuj zus, feem ntau tsom rau cov hauv qab no.
Kev soj ntsuam lub sijhawm tiag tiag ntawm qhov sib txawv ntawm qhov chaw vuam txheej txheem
Cho, Y los ntawm University of Michigan hauv Tebchaws Meskas, tau siv lub koob yees duab digital ceev ceev los saib xyuas cov txheej txheem ntawm weld nuggets nyob rau lub sijhawm, kawm txog cov txheej txheem ntawm weld nugget tsim hauv qhov chaw vuam, thiab nws cov kev cuam tshuam ntawm cov txheej txheem vuam. tsis muaj.
Kev tshawb nrhiav lub sijhawm tiag tiag ntawm cov hluav taws xob tsis ncaj qha hauv qhov chaw vuam txheej txheem
Tus kws tshawb fawb Asmeskas Matsuyama, K tau thov ib qho kev soj ntsuam tshiab raws li lub zog sib npaug ntawm daim ntawv. Qhov system no tau txais vuam voltage, tam sim no, thiab tag nrho cov phaj thickness, xam qhov nruab nrab kub thaum vuam, thiab kwv yees lub cheeb thiab splashing qhov teeb meem ntawm vuam cov ntsiab lus. Nws yog tus nqi qis-lub sijhawm saib xyuas txoj hauv kev rau qhov chaw vuam; Cov kws tshawb fawb xws li Jou thiab Min tau tshawb nrhiav txoj hauv kev los xyuas kom meej lub zog thiab zoo ntawm cov pob qij txha los ntawm kev hloov cov kev tswj tsis tau ntawm cov teeb liab tso tawm. Txoj kev tshawb fawb no yuav tsim kom muaj kev sib raug zoo ntawm cov txheej txheem tsim tawm thiab cov txheej txheem cov tswv yim sib txawv uas cuam tshuam nrog kev sib koom ua ke zoo, thiab kev xaiv ntawm cov khoom siv nkag ncaj qha cuam tshuam rau cov khoom siv hluav taws xob feem pua ​​​​ntawm kev sib koom tes loj thiab lub zog. Kev xaiv ntawm cov khoom siv hluav taws xob hloov pauv tuaj yeem cuam tshuam qhov kev loj hlob thiab deformation ntawm yaj nucleus. Txoj kev soj ntsuam no tau siv rau hauv qhov chaw welding ntawm automotive steel daim hlau.
Nyob rau hauv xyoo tas los no, ntau tus kws tshawb fawb tau koom nrog hauv kev tshawb fawb txog kev siv txoj kev ua haujlwm tsis zoo los saib xyuas qhov zoo ntawm cov pob qij txha. Piv txwv li, cov kws tshawb fawb los ntawm Fanuc Robotics hauv Tebchaws Meskas, xws li Garza thiab Frank, tau kwv yees, txheeb xyuas, thiab cais cov kev tawm tsam tsis zoo, thiab tau ua pov thawj hauv kev siv tswv yim tias txoj kev no zoo rau kev kuaj xyuas cov pob qij txha tsis zoo; Suav cov kws tshawb fawb Wang, SC, thiab lwm tus tau kawm tias kev ua haujlwm tsis muaj zog tau txais los ntawm tag nrho qhov kub ntawm qhov vuam cheeb tsam, uas cuam tshuam nrog kev ua haujlwm ntawm qhov chaw ua haujlwm hauv vuam cheeb tsam, qhov ua haujlwm ntawm qhov chaw ua haujlwm thiab cov electrode, thiab qhov tsis kam nruab nrab ntawm lub workpiece thiab lub workpiece. Qhov ntsuas dynamic tsis kam nkhaus tuaj yeem muab faib ua plaub theem: 1) nws sai sai nrog qhov txo qis ntawm kev sib cuag; 2) Feem ntau yog nyob ntawm qhov nce ntawm qhov ntim tsis kam ntawm lub workpiece, thiab qhov sib txuam nce hauv kev ua haujlwm tsis zoo; 3) Lub ntim tsis kam ntawm lub workpiece nce, tab sis kev tiv thaiv kev sib cuag txo qis, ua rau muaj kev nce hauv dynamic tsis kam; 4) Vim yog qhov tsim ntawm molten nuclei ntawm qhov chaw sib cuag, dynamic kuj txo. Kev sim tau pom tias vuam nuggets nyob rau theem peb thiab plaub; Cho, Y los ntawm University of Michigan hauv Tebchaws Meskas, tau kov yeej cov teeb meem ntawm cov txheej txheem ib txwm siv rau kev ntsuas kev tiv thaiv kev tiv thaiv nyob rau hauv theem ob hauv kev saib xyuas lub sijhawm los ntawm kev ntsuas tam sim no tam sim no thiab qhov hluav taws xob hauv thawj Circuit Court thiab txiav txim siab kev sib raug zoo ntawm cov yam ntxwv no thiab vuam. zoo los ntawm regression tsom xam.
Kev soj ntsuam ntawm lub sijhawm tiag tiag ntawm cov khoom siv hluav taws xob thaum lub sijhawm vuam txheej txheem
Senkara, J los ntawm University of Warsaw, tau tsim cov qauv kev twv ua ntej rau qhov chaw welded pob qij txha, uas yog raws li kev sib cuam tshuam ntawm kev siv tshuab thiab cov txheej txheem metallurgical hauv vuam. Siv cov qauv los xam cov hluav taws xob quab yuam thiab cov kua fusion quab yuam thaum lub sij hawm qhov chaw welding, splashing tshwm sim thaum lub tom kawg yog ntau dua li qub, thiab cov qauv tau sim validated nrog cov txiaj ntsig zoo. Cov qauv no tuaj yeem siv los coj cov kev xaiv ntawm electrode siab; Tus kws tshawb fawb Asmeskas Tang, H tau kawm txog kev cuam tshuam ntawm cov neeg kho tshuab cov yam ntxwv ntawm vuam tshuab ntawm qhov chaw vuam txheej txheem thiab vuam zoo. Txoj kev tshawb nrhiav pom tias qhov kev sib txhuam thiab kev sib txhuam ntawm cov tshuab vuam muaj qhov cuam tshuam loj rau cov txheej txheem vuam thiab vuam zoo, thaum lub zog inertia tsis muaj qhov cuam tshuam loj rau cov txheej txheem vuam thiab vuam zoo; Danish kws tshawb fawb Wu thiab Pei ntseeg hais tias cov neeg kho tshuab dynamic teb ntawm kev siv vuam tshuab muaj kev cuam tshuam loj heev rau vuam zoo thiab electrode lub neej. Yog li ntawd, nws yuav tsum tau txiav txim siab nyob rau hauv vuam ntau lawm thiab simulation. Vim lub complexity ntawm cov neeg kho tshuab qauv ntawm vuam tshuab, nws yog ib qhov nyuaj rau tau txais ib co coefficients nyob rau hauv lub simulation sib npaug. Cov tub ntxhais kawm tau txais cov kev ntsuas no los ntawm kev sim thiab kev suav MATLAB.
Neural network twv ua ntej ntawm 4 solder sib koom ua tau zoo
Cov kws tshawb fawb xws li Cho thiab Yongjoon los ntawm University of Michigan hauv Tebchaws Meskas tau siv txoj hauv kev tsis sib haum xeeb los ntsuas qhov zoo ntawm qhov chaw vuam, thiab ua ke Hopfield neural network txoj kev xav los kwv yees qhov zoo ntawm cov pob qij txha. Cov txiaj ntsig tau pom zoo sib xws nrog lub zog tensile thiab shear lub zog tau los ntawm qhov tseeb welded qauv; Podrzaj, Primoz thiab lwm tus kws tshawb fawb tau siv LVQ (Linear Vector Quantization) neural network txoj hauv kev txhawm rau txheeb xyuas qhov chaw vuam spatter ntawm cov ntaub ntawv sib txawv, thiab cov txiaj ntsig tau pom tias lub zog hluav taws xob teeb liab yog qhov taw qhia tseem ceeb tshaj plaws ntawm kev sib tsoo.