Feem ntau cov tsis kam welding controllers tsis muaj kev nyeem ntawv rau vuam tam sim no thiab quab yuam.Yog li ntawd, nws yog ib lub tswv yim zoo los yuav ib lub siab portable kuj vuam ammeter thiab dynamometer.
Resistance chaw vuam zoo nkaus li yooj yim thiab yooj yim kom txog rau thaum lub weld tawg, thaum lub sij hawm tus txheej txheem dheev yuav siv sij hawm ib tug tag nrho cov tshiab theem ntawm qhov tseem ceeb.
Tsis zoo li arc vuam, uas ua rau ib qho dhau los uas yooj yim rau kev kuaj pom, qhov chaw welds zoo li qub, tab sis tseem tuaj yeem sib nrug vim tsis muaj kev sib xyaw kom zoo.Txawm li cas los xij, nws tsis yog qhov txhaum ntawm cov txheej txheem.Qhov no yuav qhia tau tias koj qhov chaw vuam. me me dhau los yog teeb tsa tsis raug rau daim ntawv thov.
Thaum lub tshuab me me, lub teeb yuag tuaj yeem tsim nyog rau qee qhov kev siv, koj yuav tsum paub zoo kom koj paub tias koj tau txais dab tsi ua ntej kev nqis peev.
Resistance chaw vuam yog tshwj xeeb vim nws yog ib tug high-ceev txoj kev ntawm kev sib koom hlau tsis ntxiv muab tub lim hlau.Thaum ib tug kuj welder yog loj thiab teeb, lub zos daim ntawv thov ntawm precisely tswj kub tsim los ntawm cov kuj ntawm cov hlau mus rau lub vuam tam sim no. tsim kom muaj kev sib koom ua ke muaj zog - hu ua nugget.Txhim kho clamping quab yuam kuj yog qhov sib txawv tseem ceeb vim nws pab txiav txim siab tsis kam.
Thaum thov kom raug, qhov chaw vuam yog qhov ceev tshaj plaws, muaj zog tshaj plaws thiab pheej yig tshaj txoj kev koom nrog cov hlau los xij.Txawm li cas los xij, txawm tias qhov chaw vuam tau siv rau hauv kev tsim khoom rau ntau tshaj 100 xyoo, nws tseem tsis tau nkag siab zoo sab nraum kev lag luam tsheb.
Thaum cov txheej txheem yuav zoo li yooj yim, koj yuav tsum nkag siab ntau qhov sib txawv thiab yuav ua li cas kho txhua qhov kom ua tiav qhov kev xav tau - ib qho kev sib koom ua ke uas muaj zog dua li cov hlau hauv paus.
Resistance chaw vuam muaj peb lub ntsiab sib txawv uas yuav tsum tau teem kom raug.Cov kev sib txawv no tuaj yeem txhais tau tias yog FCT:
Resistance chaw vuam zoo nkaus li yooj yim thiab yooj yim kom txog rau thaum lub weld tawg, thaum lub sij hawm tus txheej txheem dheev yuav siv sij hawm ib tug tag nrho cov tshiab theem ntawm qhov tseem ceeb.
Kev ua tsis tiav ntawm qhov tseem ceeb ntawm cov kev hloov pauv no thiab kev sib raug zoo ntawm lawv tuaj yeem ua rau tsis muaj zog, tsis pom kev welds.Hmoov tsis zoo, cov teeb meem no feem ntau raug liam rau ntawm tus txheej txheem nws tus kheej, uas tau coj cov khw muag khoom los hloov lawv nrog qeeb thiab kim hlau sib koom txoj kev xws li Raws li arc vuam, riveting, riveting thiab adhesives.
Kev xaiv qhov zoo ntawm qhov chaw vuam thiab cov maub los yuav ua rau cov tswv khw tsis meej pem vim tias muaj ntau lub npe thiab cov nqi ntau los xaiv los ntawm. Ntxiv rau qhov siv AC tsis kam welders, nruab nrab zaus DC thiab capacitor tawm qauv tam sim no muaj.
Cov kev tswj hluav taws xob tau nruab rau ntawm cov vuam vuam yog feem ntau ntawm cov khoom sib txawv thiab cov kev xaiv ntawm tus kheej. Ntxiv rau kev tswj lub sijhawm vuam thiab amperage, feem ntau cov qauv tswj niaj hnub tam sim no suav nrog cov txheej txheem digitally uas yog yav dhau los cov kev xaiv kim, xws li upslope thiab pulsation.Qee tus txawm hais tawm thiab welding txheej txheem xyuas raws li built-in nta.
Niaj hnub no, ntau qhov chaw welders tau muag hauv Tebchaws Meskas, tab sis tsuas yog qee qhov ua tau raws li Hnyav Duty Resistance Welding Manufacturing Alliance (RWMA) amperage thiab quab yuam muaj peev xwm specifications.
Qee lub tshuab yog qhov loj thiab sib piv raws li lawv cov kev ntsuas kilovolt-ampere (KVA), thiab cov chaw tsim khoom siv welder tuaj yeem tswj xyuas qhov ntsuas kub kom ua rau muaj peev xwm ntawm lawv cov tshuab, uas tuaj yeem cuam tshuam cov neeg yuav khoom.
RWMA kev lag luam tus qauv xav kom cov chaw vuam yuav tsum tau nruab nrog lub transformer nrog 50% lub luag hauj lwm lub voj voog ntsuas.Lub luag hauj lwm lub voj voog ntsuas cov feem pua ntawm lub sij hawm transformer tuaj yeem ua tam sim no yam tsis muaj cua sov hauv ib feeb ntawm kev sib xyaw ua ke.Cov nqi no yog siv los xyuas kom meej tias hluav taws xob. Cheebtsam tsis ua haujlwm siab tshaj lawv cov thermal muaj peev xwm.Txawm li cas los xij, ua rau cov neeg yuav khoom tsis meej pem, qee cov neeg tsim tshuab ntsuas lawv cov transformers ntawm tsuas yog 10%, uas yog ntau tshaj ob npaug ntawm lawv cov npe KVA ntsuas.
Tsis tas li, KVA kev ntsuas feem ntau tsis cuam tshuam rau qhov tseeb vuam muaj peev xwm ntawm qhov chaw welder.Qhov muaj cov khoom siv txuas ntxiv tam sim no sib txawv nrog lub caj npab ntev (lub caj pas qhov tob) ntawm lub tshuab, ntsug qhov sib txawv ntawm caj npab, thiab qhov nruab nrab voltage ntawm lub transformer.
Raws li nrog dej siab, lub transformer theem nrab voltage yuav tsum siab txaus los thawb lub thib ob welding tam sim no tawm ntawm lub transformer thiab los ntawm lub welder lub tooj liab caj npab thiab qhov chaw vuam electrode (ntsiab).
Qhov thib ob tso zis ntawm qhov chaw vuam transformer feem ntau tsuas yog 6 mus rau 8 V, yog tias koj daim ntawv thov vuam xav tau lub tshuab nqus caj pas nrog lub caj npab ntev, koj yuav xav tau lub tshuab hloov hluav taws xob nrog qhov ntsuas hluav taws xob siab dua kom kov yeej qhov inductance ntawm lub voj voog loj thib ob. .
Thaum lub welder tsis kam yog qhov loj me thiab teeb tsa, cov ntawv thov hauv cheeb tsam ntawm kev tswj xyuas cov cua sov tsim los ntawm kev ua haujlwm ntawm cov hlau mus rau qhov vuam tam sim no tsim kom muaj zog forged sib koom ua ke - hu ua nugget.
Qhov no yog qhov tseeb tshwj xeeb tshaj yog tias qhov chaw vuam yuav tsum muaj qhov sib sib zog nqus mus rau hauv lub caj pas ntawm lub tshuab.Steel nyob rau hauv caj pas cuam tshuam qhov sib nqus ntawm caj npab thiab robs lub tshuab ntawm lub tshuab vuam siv tau.
Lub vuam forging quab yuam feem ntau yog tsim los ntawm lub tog raj kheej.Piv txwv li, ntawm lub tshuab viav caj npab, qhov muaj vuam quab yuam sib txawv raws li qhov sib piv ntawm caj npab ntev mus rau qhov kev ncua deb ntawm lub tog raj kheej lossis ko taw pas nrig mechanism los ntawm fulcrum. , yog hais tias lub caj npab luv yog hloov los ntawm ib sab caj npab ntev, qhov muaj vuam quab yuam yuav raug txo kom tsawg.
Cov tshuab ua haujlwm ko taw xav kom tus neeg teb xov tooj thawb rau ntawm tus neeg kho tshuab ko taw pedal kom tua cov electrodes.Vim cov neeg tsav tsheb tsis tshua muaj zog, cov tshuab no tsis tshua muaj zog forging uas yuav tsum tau ua kom tau raws li qhov zoo tshaj plaws Class A qhov chaw weld specifications.
Chav Kawm A qhov chaw welds muaj lub zog siab tshaj plaws thiab qhov zoo nkauj tshaj plaws.Cov txiaj ntsig zoo no tau txais los ntawm kev teeb tsa lub tshuab los tsim cov theem nrab amperage, luv vuam lub sij hawm, thiab tsim nyog quab yuam.
Nws yuav tsum tau muab sau tseg hais tias lub vuam quab yuam yuav tsum nyob rau hauv qhov tsim nyog ntau yam.Too tsawg ib tug quab yuam yuav ua rau hlau flaking thiab sib sib zog nqus dented, jagged-looking qhov chaw welds.Setting siab dhau heev lawm yuav txo tau cov hluav taws xob kuj nyob rau hauv lub sib koom tes, yog li txo. weld lub zog thiab ductility.Xaiv txoj cai Vuam Teem caij Cov kab kos npe teev cov chav kawm A, B thiab C tshuab chaw rau ntau yam hlau thicknesses muaj nyob rau hauv cov ntaub ntawv siv xws li RWMA's Resistance Welding Handbook, Revised 4th Edition.Txawm hais tias Chav Kawm C welds tseem muaj zog, lawv feem ntau suav hais tias tsis tuaj yeem lees txais vim yog qhov loj dua qhov cuam tshuam rau thaj tsam (HAZ) vim lub sijhawm vuam ntev.Piv txwv li, ob daim ntawm 18-ga.Cov hlau me me muaj qib A qhov chaw weld specification ntawm 10,300 weld amps, 650 lbs.Welding quab yuam thiab 8 vuam lub sij hawm cycles.(Ib lub voj voog tsuas yog 1/60th ntawm ib thib ob, yog li yim lub voj voog yog ceev heev.) Class C weld lub sij hawm rau tib cov hlau sib xyaw ua ke yog 6,100 amps, 205 lbs.force, thiab mus txog 42 vuam tam sim no cycles.Qhov no txuas ntxiv vuam lub sij hawm ntawm ntau tshaj li ib nrab thib ob tuaj yeem overheat cov electrodes, tsim kom muaj qhov kub ntxhov loj heev, thiab nws thiaj li kub hnyiab tau. welding transformer.Qhov tensile shear zog ntawm ib hom C qhov chaw vuam tsuas yog txo los ntawm 1,820 lbs piv rau Hom A weld.up txog 1,600 lbs, tab sis nrog ib qho txaus nyiam, tsis tshua muaj cim, Class A weld ua nrog rau qhov tsim nyog qhov chaw welder Nws zoo nkaus li zoo dua. Tsis tas li ntawd, nyob rau hauv ib puag ncig cov kab ntau lawm, Chav Kawm A weld nugget yuav ib txwm nyob ruaj khov thiab lub neej ntawm electrode yuav ntev dua.Ntxiv rau qhov tsis paub ntawm kev nqis peev hauv cov cuab yeej teeb tsa yog tias feem ntau cov kev tiv thaiv vuam tsis muaj nyeem ntawv rau vuam. Tam sim no thiab quab yuam.Yog li ntawd, txhawm rau kho cov kev hloov pauv tseem ceeb no, nws yog qhov zoo tshaj plaws los yuav ib qho khoom siv portable kuj welding ammeter thiab dynamometer.Weld Control yog lub plawv ntawm lub System Txhua zaus ib qho chaw weld yog tsim, nws zoo thiab zoo sib xws nyob ntawm qhov tsis kam. Weld control.Ob tswj cov txheej txheem yuav tsis tsim tib lub sij hawm thiab kub qhov tseem ceeb rau txhua weld.Yog li ntawd, koj yuav tsum tau ua tas mus li kev puas tsuaj ntawm weld lub zog los xyuas kom meej tias koj lub vuam department tsis tsim tawm-ntawm-spec welds. Kev hloov kho koj qhov kev tiv thaiv vuam tswj yog qhov zoo tshaj plaws los coj koj cov kev ua haujlwm vuam ua haujlwm rau cov qauv zoo ib yam, ib qho tom qab lwm qhov.Rau qhov kawg ntawm qhov chaw vuam, xav txog kev txhim kho vuam tshiab nrog cov tam sim no thiab electrode quab yuam rau. Saib xyuas txhua qhov vuam hauv lub sijhawm tiag tiag.Ib txhia ntawm cov kev tswj hwm no tseem tso cai rau koj los teeb tsa lub sijhawm vuam ncaj qha hauv amps, thaum tswj lub programmable huab cua ua haujlwm teeb tsa qhov xav tau vuam quab yuam. Tsis tas li ntawd, qee qhov kev tswj niaj hnub no ua haujlwm hauv lub voj voog kaw. , kom ntseeg tau tias cov welds tsis sib xws txawm tias muaj kev hloov pauv hauv cov khoom siv thiab lub khw muag khoom hluav taws xob.Qhov tseem ceeb ntawm Dej Txias Qhov Chaw welder Cheebtsam yuav tsum tau ua kom cov dej txias kom zoo thiab lub neej ntev electrode nyob rau lub sijhawm tsim khoom.Qee lub khw muag khoom siv me me, unrefrigerated, radiator-style dej circulators uas, Qhov zoo tshaj plaws, xa dej nyob ze ntawm chav tsev kub.Cov recirculators no tuaj yeem cuam tshuam tsis zoo rau cov khoom lag luam, raws li cov lus qhia vuam tuaj yeem nce sai vim qhov kub thiab txias thiab yuav tsum tau muaj ntau yam trims lossis hloov pauv ib zaug.Vim qhov dej kub zoo tshaj plaws rau kev siv vuam yog 55 mus txog 65 degrees Fahrenheit (los yog saum toj no cov dej lwg taw tes tiv thaiv condensation), nws yog qhov zoo tshaj plaws los mus txuas lub tshuab mus rau ib tug cais dej txias txias/recirculator.Thaum loj npaum li cas, txias txias yuav khaws electrodes thiab lwm yam welder Cheebtsam txias, uas yuav zoo heev nce. Tus naj npawb ntawm cov welds ntawm electrode trims los yog hloov. Cov kev tshawb fawb tau pom tias koj tuaj yeem ua tiav 8,000 welds ntawm cov hlau me me los yog 3,000 welds ntawm cov hlau galvanized yam tsis muaj trimming lossis hloov electrodes. Xav tau cov ntaub ntawv ntxiv?Nws them nyiaj ua haujlwm nrog tus neeg muag khoom tsim nyog los pab koj xaiv thiab tswj koj cov welder tsis kam.Xav kawm ntxiv?Lub koom haum American Welding Society (AWS) muaj ntau yam kev tshaj tawm txog kev siv vuam vuam muaj rau kev yuav khoom.Ntxiv rau, AWS thiab lwm lub koom haum muaj kev cob qhia cov kev kawm uas qhia cov hauv paus ntawm cov txheej txheem welding.Ntxiv mus, AWS muaj daim ntawv pov thawj Resistance Welding Technician certification, uas tau txais txiaj ntsig tom qab dhau 100-ntau-ntau-xaiv kev kuaj xyuas ntawm kev paub txog cov txheej txheem vuam tsis kam.
Cov kab ntawv teev cov chav kawm A, B, thiab C tshuab chaw rau ntau yam hlau thicknesses muaj nyob rau hauv cov ntaub ntawv siv, xws li RWMA's Resistance Welding Handbook, Rev. 4th Edition.
Txawm hais tias Class C welds tseem muaj zog, lawv feem ntau suav hais tias tsis tuaj yeem lees txais vim yog qhov loj dua qhov cuam tshuam rau qhov kub ntxhov (HAZ) vim lub sijhawm vuam ntev.
Piv txwv li, ob daim ntawm huv 18-ga.Cov hlau me me muaj qib A qhov chaw weld specification ntawm 10,300 weld amps, 650 lbs.Vuam quab yuam thiab 8 vuam lub sij hawm cycles.(Ib lub voj voog tsuas yog 1/60 ntawm ib thib ob, yog li yim lub voj voog yog ceev heev.)
Class C vuam lub sij hawm rau tib lub steel ua ke yog 6,100 amps, 205 lbs.force, thiab mus txog rau 42 vuam tam sim no cycles.Qhov no txuas ntxiv vuam lub sij hawm ntawm ntau tshaj li ib nrab thib ob yuav overheat lub electrodes, tsim ib tug loj heev tshav kub-cuam tshuam cheeb tsam, thiab thaum kawg hlawv tawm lub vuam transformer.
Lub tensile shear lub zog ntawm ib hom C qhov chaw vuam tsuas yog txo los ntawm 1,820 lbs piv rau Hom A weld.up txog 1,600 lbs, tab sis nrog qhov zoo nkauj, tsis tshua muaj cim, Class A weld ua nrog qhov tsim nyog qhov chaw welder zoo dua. . Tsis tas li ntawd, nyob rau hauv ib puag ncig cov kab ntau lawm, Chav Kawm A weld nugget yuav nyob ruaj khov thiab lub neej ntawm electrode yuav ntev dua.
Txhawm rau ntxiv rau qhov tsis paub, feem ntau cov kev tiv thaiv vuam tswj tsis muaj kev nyeem ntawv rau vuam tam sim no thiab quab yuam.Yog li ntawd, txhawm rau kho cov kev hloov pauv tseem ceeb no, nws yog qhov zoo tshaj plaws los yuav ib qho khoom siv portable kuj vuam ammeter thiab dynamometer.
Txhua lub sij hawm ib qho chaw weld yog tsim, nws qhov zoo thiab qhov sib xws nyob ntawm qhov kev tswj vuam tsis zoo. Cov txheej txheem qub tswj tsis tuaj yeem tsim tib lub sijhawm thiab cov nqi kub rau txhua qhov weld.Yog li ntawd, koj yuav tsum tau ua qhov kev ntsuam xyuas tsis tu ncua ntawm vuam lub zog rau xyuas kom meej tias koj lub tuam tsev vuam tsis tsim cov welds tawm.
Hloov kho koj qhov kev tiv thaiv vuam kev tswj hwm yog qhov txiaj ntsig zoo tshaj plaws los coj koj cov kev ua haujlwm vuam ua haujlwm rau tus qauv zoo ib yam, ib qho tom qab.
Rau qhov kawg qhov chaw vuam ua haujlwm, xav txog kev txhim kho lub vuam tshiab nrog cov khoom siv tam sim no thiab cov hluav taws xob los saib xyuas txhua qhov vuam hauv lub sijhawm tiag tiag.Ib txhia ntawm cov kev tswj no tseem tso cai rau koj los teeb tsa lub sijhawm vuam ncaj qha hauv amps, thaum tswj lub programmable cua ua haujlwm. teeb tsa qhov xav tau vuam quab yuam. Tsis tas li ntawd, qee qhov kev tswj xyuas niaj hnub no ua haujlwm nyob rau hauv lub voj voog kaw, kom ntseeg tau tias cov welds tsis sib xws txawm tias muaj kev hloov pauv ntawm cov khoom siv thiab lub khw muag khoom.
Spot welder Cheebtsam yuav tsum tau ua kom dej txias kom zoo kom zoo welds thiab lub neej ntev electrode thaum lub sij hawm tsim khoom.Qee lub khw siv me me, unrefrigerated, radiator-style dej circulators uas, qhov zoo tshaj plaws, xa dej nyob ze ntawm chav tsev kub.Cov recirculators no tuaj yeem cuam tshuam tsis zoo rau. productivity, raws li qhov chaw vuam cov lus qhia tuaj yeem nce sai vim qhov kub thiab txias thiab xav tau ntau yam kev txiav los yog hloov pauv ib zaug.
Txij li cov dej kub zoo tshaj plaws rau kev ua haujlwm welder yog 55 txog 65 degrees Fahrenheit (los yog saum toj no cov dej ntws los tiv thaiv condensation), nws yog qhov zoo tshaj plaws los txuas lub tshuab mus rau ib qho dej txias txias / recirculator. electrodes thiab lwm yam welder Cheebtsam txias, uas yuav ua rau kom tus xov tooj ntawm welds ntawm electrode trims los yog hloov.
Cov kev tshawb fawb tau pom tias koj tuaj yeem ua tiav 8,000 welds ntawm cov hlau me me lossis 3,000 welds ntawm cov hlau galvanized yam tsis tau txiav los yog hloov cov electrodes.
Nws them nyiaj ua hauj lwm nrog ib tus neeg muag khoom tsim nyog los pab koj xaiv thiab tswj koj cov welder tsis kam.
Xav paub ntau ntxiv?Lub koom haum American Welding Society (AWS) muaj ntau yam kev tshaj tawm txog kev siv vuam vuam muaj rau kev yuav khoom.Ntxiv rau, AWS thiab lwm lub koom haum muaj cov kev cob qhia uas qhia cov hauv paus ntawm cov txheej txheem welding.
Tsis tas li ntawd, AWS muab Certified Resistance Welding Technician certification, uas tau txais txiaj ntsig tom qab dhau 100-ntau-ntau-xaiv kev kuaj xyuas ntawm kev paub txog cov txheej txheem vuam tsis kam.
WELDER, yav tas los siv vuam niaj hnub no, nthuav qhia cov neeg tiag tiag uas ua cov khoom uas peb siv thiab ua haujlwm nrog txhua hnub.Cov ntawv xov xwm no tau ua haujlwm rau cov koom haum vuam hauv North America rau ntau tshaj 20 xyoo.
Tam sim no nrog kev nkag mus rau tag nrho cov ntawv digital ntawm FABRICATOR, yooj yim nkag mus rau cov peev txheej tseem ceeb hauv kev lag luam.
Cov ntawv digital ntawm The Tube & Pipe Journal yog tam sim no nkag mus tau yooj yim, muab kev nkag tau yooj yim rau cov khoom lag luam muaj txiaj ntsig.
Txaus siab rau kev nkag mus rau tag nrho cov ntawv luam tawm digital ntawm STAMPING Journal, uas muab cov txheej txheem thev naus laus zis tshiab, kev coj ua zoo tshaj plaws thiab xov xwm kev lag luam rau kev lag luam hlau stamping.
Tam sim no nrog kev nkag mus rau tag nrho cov ntawv digital ntawm Tus Fabricator en Español, yooj yim nkag mus rau cov peev txheej tseem ceeb hauv kev lag luam.
Lub sij hawm xa tuaj: Plaub Hlis-05-2022