Kev ua haujlwm ntawm cov tshuab vuam sib txawv nyob ntawm hom, tab sis cov txheej txheem dav dav tuaj yeem muab faib ua tsib kauj ruam tseem ceeb: kev tshuaj xyuas cov khoom siv, kev teeb tsa tsis zoo, kev sim vuam thiab kev debugging, kev vuam zoo, thiab tom qab- kev ua haujlwm tu. Cov hauv qab no siv lub tshuab arc vuam ua piv txwv los piav qhia cov txheej txheem ua haujlwm thiab kev ceev faj kom ntxaws.
1.Pre-Kev Npaj ua haujlwm
Kev tshuaj xyuas cov khoom siv: Tshawb xyuas lub vuam tshuab fais fab qaum rau kev puas tsuaj thiab xyuas kom cov xaim hauv av muaj kev ruaj ntseg (qhov kev tiv thaiv hauv av yuav tsum tsawg dua lossis sib npaug li 4Ω) kom tsis txhob muaj kev pheej hmoo ntawm cov xau.
Paub meej tias lub vuam tshuab casing tsis muaj cov kab nrib pleb thiab cov kiv cua txias ua haujlwm kom tsis txhob muaj cua sov thiab ua haujlwm tsis zoo.
Xyuas qhov vuam clamps, cables, thiab lwm yam khoom siv rau kev puas tsuaj. Qhov ntev ntawm cable yog pom zoo kom tsis pub tshaj 30 meters (qhov ntev ntev tuaj yeem ua rau lub zog poob).
Yog tias siv cov roj thaiv kev sib txuas (xws li MIG / MAG), xyuas cov roj lub tog raj kheej siab (feem ntau yog 0.5-0.8MPa), roj ntws tus nqi (15-25L / min), thiab cov kav dej sib khi.
Khoom siv thiab Workpiece npaj:
Xaiv qhov tsim nyog vuam pas nrig lossis hlau raws li cov khoom siv ua haujlwm (xws li carbon steel, stainless hlau, aluminium alloy). Piv txwv li, thaum vuam Q235 steel, E4303 vuam rods tuaj yeem xaiv tau; Thaum vuam 304 stainless hlau, ER308L vuam hlau yuav tsum tau.
Ntxuav qhov chaw ntawm lub workpiece kom tshem tawm cov roj thiab xeb. Lub kaum sab xis yuav tsum ua tau raws li tus qauv (piv txwv li, 60℃-70℃rau V-shaped bevels). Qhov sib txawv yuav tsum tau tswj ntawm 1-3mm kom ntseeg tau tias nkag mus.
2.Parameter Teeb thiab Debugging
Vuam Parameter Setting
Kev kho tam sim no: Xaiv qhov tam sim no raws li lub phaj thickness. Piv txwv li, thaum vuam 3 hli steel phaj, qhov tam sim no ntawm 120-150A raug pom zoo; Thaum vuam 8 hli steel phaj, qhov tam sim no yuav tsum tau nce mus rau 200-250A.
Voltage Matching: Qhov voltage yuav tsum tau sib koom ua ke nrog tam sim no. Feem ntau, txhua 100A ntawm tam sim no sib raug rau 20-24V. Ib qho hluav taws xob siab dhau tuaj yeem ua rau tawg yooj yim, thaum lub zog qis dhau yuav ua rau qhov tsis ruaj khov.
Vuam ceev: Tswj qhov ceev ntawm 15-30cm / min. Kev nrawm nrawm heev yuav ua rau tsis tiav fusion, thaum qeeb qeeb yuav ua rau muaj cua sov ntau dhau thiab deformation.
Gas Flow Rate (Shielded Vuam): Kho raws li txoj kab uas hla nozzle. Piv txwv li, 12 hli txoj kab uas hla nozzle yuav tsum muaj tus nqi ntws ntawm 18-20L / min.
Kev sim Vuam thiab Debugging
Ua ib qho kev sim weld ntawm cov khoom seem thiab saib xyuas qhov tsim cov vuam. Qhov zoo tshaj plaws weld yuav tsum tsis muaj qhov sib txawv, tsis muaj qhov porosity thiab tawg, nrog rau qhov kev txhim kho vuam tswj ntawm 1-2 hli. Yog tias muaj kev sib tsoo ntau dhau, qhov hluav taws xob tuaj yeem txo qis lossis cov roj ntws nce ntxiv; Yog hais tias lub vuam tig dub, qhov voltage yuav tsum tau nce los yog qhov vuam ceev qeeb.
3.Kev ua haujlwm vuam
Arc Ignition thiab Electrode Manipulation
Arc Ignition: Siv txoj kev khawb los yog kev tawm tsam ncaj qha rau ignite lub arc, tuav lub kaum sab xis ntawm 70-80℃ntawm cov electrode thiab cov khoom ua haujlwm, thiab qhov deb ntawm 2-4mm ntawm qhov chaw ua haujlwm.
Electrode Manipulation: Siv cov khoom siv hluav taws xob ncaj nraim rau kev sib txuas ncaj nraim; rau fillet welds, siv ib tug lateral oscillation. Rau ntsug vuam, siv lub crescent lossis serrated electrode manipulation los tswj qhov loj ntawm lub pas dej molten.
Arc Termination: Tom qab sau lub crater, maj mam nqa lub arc kom tsis txhob muaj kab nrib pleb.
Kev ceev faj rau Multi-Pass Vuam: Txhua qhov vuam yuav tsum sib tshooj los ntawm 1/3-1/2 ntawm nws qhov dav. Qhov kub ntawm qhov sib cuam tshuam yuav tsum tau tswj ntawm 150-200℃(siv lub ntsuas kub infrared) kom tsis txhob muaj qhov txias txias.
Cov phaj tuab welding yuav tsum muaj ntau- txheej, ntau- hla vuam, nrog txhua txheej tsis pub tshaj 4 hli hauv thickness.
4.High-Kev pheej hmoo ua haujlwm thiab kev tswj hwm kev nyab xeeb
Cov Khoom Siv Tiv Thaiv Tus Kheej: Vuam lub qhov ncauj qhov ntswg ( lim loj 10-12), cov khaub ncaws ua haujlwm tsis zoo, cov hnab looj tes tiv thaiv, thiab khau tiv thaiv yuav tsum hnav kom tsis txhob muaj qhov kub hnyiab thiab tawg pleb.
Kev Tswj Xyuas Kev Nyab Xeeb: Kev nyab xeeb yuav tsum tau hnav thaum ua haujlwm ntawm qhov siab, thiab cov tshuab vuam yuav tsum tau ruaj khov rau lub platform ruaj khov.
Kev Nyab Xeeb Ib puag ncig: Qhov chaw vuam yuav tsum tau ua kom zoo- qhov cua, nrog rau cov pa tawm hauv cheeb tsam siab dua lossis sib npaug li 0.5 m / s txhawm rau tiv thaiv cov kab mob ua haujlwm xws li manganese lom.
5. Cov txheej txheem ua haujlwm tshwj xeeb
Thin Phaj Vuam (tsawg dua lossis sib npaug li 3 hli): Siv cov tam sim no qis (60-100A), luv arc vuam, thiab electrode txoj kab uas hla tsawg dua lossis sib npaug li 2.5mm los tiv thaiv kev kub hnyiab.
Hla welding tuaj yeem siv tau, nrog rau lub sijhawm vuam ntawm 10-15mm kom txo cov thermal deformation.
Aluminium Alloy Vuam: Yuav tsum muaj lub tshuab AC vuam lossis lub tshuab MIG vuam tshuab kom tsis txhob poob magnesium.
Argon purity yuav tsum ntau dua los yog sib npaug rau 99.99%, thiab cov pa roj yuav tsum yog 30% siab dua li cov pa roj carbon steel (25-30L / min).
Vuam sab nraum zoov: Lub vaj tse los nag yuav tsum tau txhim tsa thaum huab cua los nag, thiab lub tshuab vuam yuav tsum tau nruab nrog cov dej noo- pov thawj.
Thaum lub caij ntuj no kev tsim kho, lub workpiece yuav tsum tau preheated rau saum toj no 15℃kom tsis txhob txias cracking. Peb tam sim no muab cov khoom lag luam hauv pawg no, xws li servo ultrasonic vuam tshuab, uas yog hluav taws xob, txhawb kev vuam nylon, PE, thiab lwm yam yas, hnyav 135kg, thiab muaj kev ruaj khov thiab ua haujlwm zoo.
