1. Muab piv rau cov ntawv qis qis zoo tib yam - cov ntawv carbon steel, dab tsi yog qhov kev hloov pauv tseem ceeb uas xav tau rau qhov chaw vuam txheej txheem rau galvanized coils?
A: Thaum qhov chaw vuam galvanized coils, lub xub ntiag ntawm cov zinc txheej ua rau qis kev tiv thaiv thiab vuam tam sim no ceev, ua rau lawv cov weldability hnyav dua li qhov qis qis - carbon steel los xij. Yuav kom ua tiav tib lub weld nugget loj thiab weld lub zog raws li qis - cov ntawv carbon steel, cov txheej txheem yuav tsum tau nce ntxiv:
Vuam tam sim no: Feem ntau yuav tsum tau nce 25% -50%.
Vuam lub sij hawm: Feem ntau yuav tsum tau nce mus rau kwv yees li ob zaug ntawm qhov chaw vuam lub sij hawm rau tsawg- cov nplooj ntawv carbon steel.
Electrode siab: Yuav tsum tau nce los ntawm 20% -30% piv rau qhov chaw vuam qis- cov ntawv carbon steel.
2. Yuav ua li cas yuav tsum tau xaiv ob qhov tseem ceeb, vuam tam sim no thiab electrode siab?
A: Kev xaiv ntawm ob qhov kev ntsuas no yuav tsum tau txiav txim siab meej, raws li lawv ncaj qha txiav txim siab qhov zoo ntawm qhov vuam thiab qhov tsim ntawm weld nugget.
Vuam tam sim no: Nws cuam tshuam ncaj qha rau qhov loj ntawm qhov weld nugget thiab lub zog ntawm vuam, thiab yog qhov tseem ceeb tshaj plaws ntawm kev vuam zoo. Lub qhov rais hloov kho tam sim no (piv txwv li, tus qauv ntau) rau qhov chaw vuam ntawm cov nplooj ntawv galvanized yog nqaim thiab rhiab heev rau cov kev hloov tam sim no. Tsis tshua muaj tam sim no yuav ua rau tsis txaus weld nugget los yog tsis tiav welds, thaum siab dhau heev lawm yuav ua tau yooj yim heev spatter thiab blowouts. Cov kev tshawb fawb tau pom tias thaum vuam tam sim no nce, lub zog shear ntawm lub vuam ua ntej nce thiab tom qab ntawd txo qis, nrog rau qhov zoo tshaj plaws.
Electrode siab: Tsim nyog siab pab kom tshem tawm cov zinc molten los ntawm qhov chaw vuam, txhawb kev tsim cov khoom siv vuam. Feem ntau, qhov siab ntawm 0.3-0.5 MPa (kwv yees li 3-5 kgf / cm²) raug pom zoo. Tsis tshua muaj siab yuav ua rau kev sib cuag tsis zoo nyob rau hauv qhov chaw vuam, ua rau porosity thiab spatter; Lub siab dhau heev lawm yuav tawm ntau qhov sib sib zog nqus indentations ntawm daim ntawv, ua rau cov zinc tiv thaiv txheej thiab ua qhov pib ntawm corrosion.
3. Lub sijhawm vuam tau teem sijhawm li cas, thiab qhov kev sib koom ua ke ntawm nws thiab qhov tam sim no thiab lub siab yog dab tsi?
A: Feem ntau siv vuam lub sij hawm rau qhov chaw vuam galvanized steel los xij yog feem ntau ntawm 0.1 thiab 0.33 vib nas this (piv txwv li, 100 txog 330 milliseconds). Txhawm rau sib npaug weld nugget tsim thiab tso cua sov, segmented lossis multi-pulse tswj tuaj yeem siv.
Vuam lub sij hawm, tam sim no, thiab siab yog interdependent thiab correlated heev; tsis muaj ib qho parameter tuaj yeem hloov kho hauv kev sib cais. Ib txoj hauv kev zoo tshaj plaws yog txhawm rau txhim kho ib qho tseem ceeb (xws li lub sijhawm vuam), tom qab ntawd nrhiav qhov hloov kho tau ntawm lwm yam ob yam (tam sim no thiab siab), tom qab ntawd hloov qhov xwm txheej ruaj khov, rov ua cov txheej txheem no kom txog thaum pom kev sib xyaw ua ke. Piv txwv li, thaum nce qhov vuam tam sim no, txhawm rau tiv thaiv spatter, nws yog ib qho tsim nyog yuav tsum tau ua kom cov electrode siab sib npaug thiab ua kom lub sij hawm luv luv. Qhov kev hloov kho kev sib koom ua ke no yog qhov tseem ceeb kom tau txais cov khoom zoo -welds zoo.
4. Dab tsi yog qhov multi-pulse vuam txheej txheem rau galvanized steel ntawv? Nws qhov zoo yog dab tsi?
A: Multi-pulse welding, tshwj xeeb tshaj yog ob -pulse vuam, yog ib txoj hauv kev zoo rau qhov chaw vuam galvanized steel los xij. Nws yog ua tiav los ntawm ob kauj ruam: preheating thiab vuam, uas muaj qhov zoo tshaj plaws piv rau cov vuam ncaj qha nrog ib qho hluav taws xob siab.
Txheej txheem Flow:
Preheating Pulse: Ib qho me me tam sim no yog siv luv luv. Nws txoj haujlwm tsis yog yaj cov hlau substrate, tab sis kom preheat thiab ua rau cov zinc txheej ntawm cov hlau nto, ua rau qis - melting - taw tes zinc kom yaj thiab vaporize ua ntej, tsim cov xwm txheej rau kev txhim kho vuam tom qab.
Vuam Pulse: Tom qab cov zinc txheej tau tawg lawm, lub siab - lub zog tseem ceeb vuam mem tes yog siv, tso cai rau cov hlau substrate kom tag nrho fuse thiab tsim muaj zog weld nugget.
Qhov zoo:
Ua kom muaj txiaj ntsig zoo vim tias zinc vapor raug tshem tawm ua ntej thaum lub sijhawm preheating.
Txhim kho weld tsim thiab txhim kho weld nugget zoo.
Pab txuas lub neej electrode.
5: Dab tsi tshwj xeeb vuam tsis tuaj yeem raug xa mus rau kev pib ua haujlwm?
A: Nrhiav cov txheej txheem zoo tshaj plaws feem ntau yuav tsum tau hloov kho raws li qhov tseeb thickness ntawm cov ntaub ntawv thiab cov khoom siv. Hauv qab no yog ib qho piv txwv ntawm kev ua haujlwm raws li kev coj ua hauv kev lag luam, uas tuaj yeem siv los ua tus qauv rau kev hloov kho.