Projection welding yog ib qho kev ua haujlwm siab - vuam txoj kev ua tau zoo uas tuaj yeem ua ntau- taw tes vuam ib txhij, uas tuaj yeem siv los hloov arc vuam, brazing thiab riveting. Txoj kev no muaj cov yam ntxwv zoo kawg nkaus ntawm kev ua haujlwm ceev thiab tsis muaj lwm yam kev siv tshwj tsis yog hluav taws xob. Kab lus no feem ntau qhia txog qhov zoo thiab muaj feem cuam tshuam ntawm qhov projection vuam ceev piv nrogzoo tib yam vuam ceev.
I. Projection Welding txiv ntoo yog dab tsi?
Qhov projection vuam ceev yog siv rau vuam stamping qhov chaw ntawm qis- carbon steel thiab qis- hlau alloy. Muaj ntau ntau hom projection welding. Ntxiv rau daim ntawv projection welding, kuj tseem muaj qhov projection vuam ntawm bolts, screws thiab lwm yam, hla hlau projection vuam, yeeb nkab projection vuam thiab daim ntawv T- hom projection vuam.
II. Qhov zoo thiab qhov tsis zoo ntawm qhov projection vuam ceev
(I) Qhov zoo ntawm Projection Vuam Ceev
1. Ntau lub ntsiab lus vuam tuaj yeem txuas tau ib txhij hauv ib lub voj voog ntawm lub tshuab vuam; Tus naj npawb ntawm cov ntsiab lus vuam uas tuaj yeem welded ib zaug yog nyob ntawm qhov sib xws ntawm electrode quab yuam thiab vuam tam sim no uas lub tshuab vuam tuaj yeem siv rau txhua qhov projection.
2. Txij li cov vuam tam sim no yog tsom rau ntawm qhov projections thiab tsis muaj teeb meem shunt los ntawm cov ntsiab lus vuam uas nyob ib sab, qhov sib tshooj me me thiab qhov sib txawv me me tuaj yeem siv tau.
3. Txoj hauj lwm ntawm qhov projection vuam cov ntsiab lus yog qhov tseeb dua qhov chaw vuam cov ntsiab lus, thiab vim qhov loj me ntawm qhov projections, qhov zoo ntawm qhov projection vuam cov ntsiab lus yog ruaj khov dua. Yog li ntawd, qhov loj ntawm qhov projection vuam cov ntsiab lus tuaj yeem ua me dua li qhov chaw vuam cov ntsiab lus.
4. Txij li qhov projections tuaj yeem teeb tsa rau ntawm ib feem, qhov vuam cov cim ntawm qhov pom ntawm lwm qhov tuaj yeem txo qis.
5. Qhov projection welding txais yuav cov electrodes loj loj, uas nws cov cua sov thiab hnav yog tsawg dua qhov chaw vuam electrodes, uas ua rau lub neej ntev ntawm cov electrodes, yog li txuag lub sij hawm rau electrode trimming thiab hloov thiab txo cov electrode tu nqi.
6. Txij li ntau lub ntsiab lus tuaj yeem welded ib txhij nrog qhov projections me me, welded Cheebtsam nrog me deformation tuaj yeem tau.
7. Qhov projection vuam tuaj yeem kov yeej nugget sib txawv, yog li nws tuaj yeem vuam qhov sib txawv nrog lub thickness piv txog 6: 1.
(II) Disadvantages of ProjectionVuam ceev
1. Qee zaum, cov txheej txheem ntxiv yuav tsum tau ua ua ntej ib lossis ntau qhov projections.
2. Thaum welding ob peb cov ntsiab lus vuam ib txhij nrog tib lub electrode, qhov kev sib raug zoo ntawm cov khoom ua haujlwm thiab qhov loj ntawm qhov projections (tshwj xeeb tshaj yog qhov siab) yuav tsum muaj siab - precision tolerances los xyuas kom meej cov electrode quab yuam thiab vuam tam sim no, thiaj li ua kom cov khoom zoo ib yam ntawm txhua qhov vuam taw tes.
3. Thaum vuam ntau cov ntsiab lus vuam ib txhij, lub siab - vuam tshuab nrog lub siab electrode siab thiab cov neeg kho tshuab siab yog yuav tsum tau, thiab nws cov tshuab siab yuav tsum muaj kev ua haujlwm siab - nce kev ua tau zoo.
III. Cov yam ntxwv, qhov zoo thiab qhov tsis zoo ntawm vuam ceev
Lub vuam txiv ntoo yog cov txiv ntoo uas tsim nyog rau vuam sab nraum cov txiv ntoo. Nws yog feem ntau yog ua los ntawm cov ntaub ntawv weldable thiab muaj ib tug kuj loj thickness, uas yog haum rau welding ua hauj lwm. Vuam yog sib npaug rau fusing ob qhov sib cais rau hauv ib qho tag nrho: cov hlau yog melted los ntawm qhov kub thiab txias, sib tov, thiab ces txias kom tiav qhov kev sib txuas. Alloys tuaj yeem muab ntxiv rau hauv nruab nrab, thiab kev sib txuas sab hauv cia siab rau lub zog molecular, nws lub zog feem ntau siab dua li ntawm niam txiv hlau.
Kev debugging ntawm vuam tsis yuav tsum tau ua raws li qhov loj ntawm vuam fusion, thiab vuam tsis xws luag raug tshem tawm los ntawm kev kho vuam tsis. Qhov zoo ntawm vuam yog ze ze rau kev kho ua ntej - vuam, thiab impurities xws li plua plav thiab roj stains nyob rau saum npoo ntawm lub workpiece yuav tsum tau ntxuav.
(I) Qhov zoo: Kev sib txuas vuam muaj lub zog siab thiab ntau yam kev siv, thiab tuaj yeem siv rau kev sib txuas ntawm cov khoom sib txawv ntawm cov thicknesses.
(II) Qhov tsis zoo: qhov kub siab thaum lub sij hawm vuam yuav ua rau deformation ntawm cov khoom sib txuas, thiab kev sib txuas tsis tuaj yeem disassembled tom qab vuam; Qee cov hlau nquag siv (xws li txhuas, magnesium, thiab lwm yam) tsis tuaj yeem welded los ntawm cov txheej txheem ib txwm siv, xav tau cov khoom tiv thaiv lossis argon arc vuam, uas muaj cov kev xav tau siab ntawm kev siv tshuab thiab precision.
IV. Ntxiv qhov zoo ntawm Projection Vuam ceev tshaj Vuam ceev
Ntxiv rau qhov saum toj no - tau hais txog qhov zoo ntawm qhov projectionvuam ceevlawv tus kheej, piv nrog cov txiv ntseej, qhov projection vuam ceev kuj muaj cov txiaj ntsig hauv qab no:
1. Ntau cov ntsiab lus vuam tuaj yeem ua tiav ib txhij hauv ib lub voj voog vuam, uas tsis yog tsuas yog muaj kev ua haujlwm siab, tab sis kuj tsis muaj kev cuam tshuam shunt. Yog li ntawd, vuam cov ntsiab lus tuaj yeem npaj rau hauv qhov nqaim yam tsis txwv los ntawm qhov sib nrug ntawm qhov taw tes.
2. The current density is concentrated on the projections, and the current density is high, so welding can be performed with a smaller current, and small nuggets can be reliably formed; thaum nyob rau hauv qhov chaw vuam, nws yog ib qho nyuaj rau tsim ib tug nugget me dua ib tug tej yam me me sib xws rau ib tug tej phaj thickness.
3. Cov kev kwv yees muaj qhov tseeb thiab qhov ntau thiab tsawg, thiab lub zog ntawm txhua qhov chaw vuam yog sib xws. Yog li ntawd, rau ib tug muab lub zog yuav tsum tau, qhov luaj li cas ntawm qhov projection welding point yuav ua tau me dua qhov chaw welding point.
4. Cov electrodes loj loj tau txais yuav, thiab qhov projections tau teem rau ntawm ib qho chaw ua haujlwm, uas tuaj yeem txo qhov indentation ntawm qhov chaw raug ntawm lwm qhov chaw ua haujlwm; Nyob rau tib lub sijhawm, cov electrodes loj loj muaj qhov ceev me me tam sim no thiab cov cua sov zoo, thiab cov khoom siv hluav taws xob tsawg dua li qhov chaw vuam electrodes, uas txo cov nqi kho thiab kho cov electrodes.
5. Piv nrog rau qhov chaw vuam, qhov cuam tshuam ntawm cov roj stains, xeb, oxide nplai, coatings thiab lwm yam txheej txheej ntawm lub workpiece nto ntawm qhov projection vuam yog me dua, tab sis ib tug huv thiab huv si workpiece nto tuaj yeem tau txais kev ruaj khov dua vuam zoo.
Hauv cov ntsiab lus, qhov projection vuam yog dav siv vim cov saum toj no - tau hais txog ntau yam zoo. Nws qhov tsis txaus yog tias yuav tsum muaj cov txheej txheem ntxiv rau stamping qhov projections, cov qauv electrode yog qhov nyuaj, thiab vim tias yuav tsum tau vuam ntau cov ntsiab lus vuam ib txhij, yuav tsum muaj lub siab - lub tshuab vuam tshuab nrog lub siab electrode siab thiab cov neeg kho tshuab siab.
