Spot welding yog ib txoj hauv kev ua haujlwm vuam uas cov vuam vuam tau sib sau ua ke rau hauv lub puab tsaig thiab nias ntawm ob lub electrodes, thiab lub hauv paus hlau yog yaj los ntawm cov cua sov los ntawm kev sib koom ua ke.
Spot welding feem ntau yog siv hauv cov hauv qab no:
1. Lap sib koom ua ke ntawm daim ntawv stamping qhov chaw, xws li tsheb cab, tsheb thauj neeg, ntses nplai npo ntawm cov qoob loo, thiab lwm yam.
2. Nyias phaj thiab seem steel qauv thiab cov qauv ntawm daim tawv nqaij, xws li sab phab ntsa thiab qab nthab ntawm cov carriages, trailer compartment panels, muab cov qoob loo funnels, thiab lwm yam.
3. Cov ntxaij vab tshaus, qhov chaw thav duab thiab ntoo khaub lig tuav, thiab lwm yam.
Characteristic
Thaum lub sij hawm welding, lub weldment tsim ib tug ncej puab thiab nias ntawm ob electrodes.Nws cov yam ntxwv tseem ceeb yog raws li nram no:
1. Lub sij hawm cua sov ntawm qhov chaw sib txuas yog luv heev thaum lub sij hawm vuam, thiab vuam ceev yog ceev.
2. Qhov chaw vuam tsuas yog siv lub zog hluav taws xob xwb, thiab tsis tas yuav tsum tau ntim cov ntaub ntawv lossis cov flux, roj, thiab lwm yam.
3. Qhov zoo ntawm qhov chaw vuam yog tsuas yog lav los ntawm qhov chaw vuam tshuab.Kev ua haujlwm yog yooj yim, qib ntawm kev siv tshuab thiab automation yog siab, thiab cov khoom tsim tau siab.
4. Kev siv zog tsawg thiab kev ua haujlwm zoo.
5. Txij li thaum lub vuam energization tiav nyob rau hauv ib tug luv luv lub sij hawm ntawm lub sij hawm, yuav tsum tau ib tug loj tam sim no thiab siab, yog li cov kev tswj ntawm cov txheej txheem yog ntau nyuaj, lub vuam tshuab muaj peev xwm loj, thiab cov nqi ntawm cov cuab yeej kuj yog. siab.
6.Nws yog ib qho nyuaj rau kev sim tsis muaj kev puas tsuaj ntawm cov pob qij txha.
Cov txheej txheem ua haujlwm
Qhov saum npoo ntawm lub workpiece yuav tsum tau ntxuav ua ntej vuam.Txoj kev tu siv feem ntau yog kev ntxuav tu, uas yog, pickling hauv rhuab sulfuric acid nrog ib tug concentration ntawm 10%, thiab ces ntxuav hauv dej kub.Cov txheej txheem vuam tshwj xeeb yog raws li hauv qab no:
(1) Xa cov khoom sib koom ua ke ntawm cov khoom siv hluav taws xob sab saud thiab qis ntawm qhov chaw vuam tshuab thiab clamp nws;
(2) electrification, kom qhov chaw sib cuag ntawm ob lub workpieces yog rhuab thiab ib nrab melted los ua ib tug nugget;
(3) Khaws lub siab tom qab lub hwj chim txiav tawm, kom lub nugget txias thiab solidified nyob rau hauv lub siab los tsim ib tug solder sib koom;
(4) Tshem tawm lub siab thiab tshem tawm lub workpiece.
Kev cuam tshuam
Lub ntsiab tseem ceeb cuam tshuam rau vuam zoo yog vuam tam sim no thiab lub zog lub sij hawm, electrode siab thiab shunt, thiab lwm yam.
1. Vuam tam sim no thiab lub zog lub sijhawm
Raws li qhov loj ntawm qhov vuam tam sim no thiab qhov ntev ntawm lub zog lub sij hawm, qhov chaw vuam tuaj yeem muab faib ua ob hom: tawv specification thiab mos specification.Cov kev qhia tshwj xeeb uas dhau qhov tam sim no loj hauv lub sijhawm luv luv yog hu ua qhov tshwj xeeb nyuaj.Nws muaj qhov zoo ntawm cov khoom tsim tau zoo, lub neej ntev electrode, thiab me me deformation ntawm vuam.Nws yog tsim rau vuam hlau nrog zoo thermal conductivity.Ib qho kev qhia tshwj xeeb uas dhau qhov tam sim no me me rau lub sijhawm ntev yog hu ua cov lus qhia muag muag, uas muaj cov khoom lag luam qis dua thiab tsim nyog rau cov vuam hlau uas zoo li hardened.
2. Electrode siab
Thaum lub sij hawm qhov chaw vuam, lub siab exerted los ntawm electrode ntawm lub vuam yog hu ua electrode siab.Lub electrode siab yuav tsum tau xaiv kom tsim nyog.Thaum lub siab yog siab, lub shrinkage porosity thiab shrinkage kab noj hniav uas yuav tshwm sim thaum lub nugget solidifies yuav raug tshem tawm, tab sis cov kev twb kev txuas kuj thiab tam sim no ceev txo, uas ua rau tsis txaus cua sov ntawm lub weldment thiab ib tug txo nyob rau hauv txoj kab uas hla ntawm lub nugget. solder sib koom.Lub zog ntawm qhov sib koom ua ke yog txo.Qhov loj ntawm electrode siab tuaj yeem xaiv raws li cov hauv qab no:
(1) Cov khoom siv welding.Qhov siab dua qhov kub siab zog ntawm cov khoom siv.Qhov siab dua electrode xav tau.Yog li ntawd, thaum welding stainless hlau thiab tshav kub-resistant steel, lub electrode siab yuav tsum siab tshaj cov uas tsis muaj carbon steel.
(2) Welding parameters.Qhov nyuaj ntawm weld specification, qhov siab dua electrode.
3. yuv
Thaum lub sij hawm qhov chaw vuam, qhov tam sim no ntws los ntawm sab nraud lub vuam lub ntsiab yog hu ua shunt.Lub shunt txo qhov tam sim no ntws los ntawm qhov chaw vuam, ua rau cov cua sov tsis txaus, ua rau muaj qhov txo qis hauv lub zog ntawm cov vuam sib txuas thiab cuam tshuam rau vuam zoo.Cov yam ntxwv uas cuam tshuam rau qib kev hloov pauv feem ntau suav nrog cov hauv qab no:
(1) Lub thickness ntawm vuam thiab qhov sib nrug ntawm cov pob qij txha.Raws li qhov kev ncua deb ntawm cov pob qij txha nce, lub shunt kuj nce thiab qib ntawm shunt txo.Thaum cov pa dot pitch ntawm 30-50mm yog saws, lub shunt tam sim no suav rau 25% -40% ntawm tag nrho cov tam sim no, thiab raws li lub thickness ntawm weldment txo, lub degree ntawm shunt kuj txo.
(2) Qhov saum npoo ntawm qhov vuam.Thaum muaj oxides los yog av nyob rau saum npoo ntawm lub vuam, qhov kev sib cuag ntawm ob lub weldment nce, thiab tam sim no los ntawm qhov vuam cheeb tsam txo, uas yog, qhov degree ntawm shunt nce.Lub workpiece tuaj yeem raug xaiv, sandblasted lossis polished.
Kev Tiv Thaiv Kev Nyab Xeeb
(1) Lub ko taw hloov ntawm lub tshuab vuam yuav tsum muaj lub hau npog tiv thaiv kom tsis txhob muaj kev sib tsoo.
(2) Lub chaw ua haujlwm yuav tsum tau nruab nrog lub baffle los tiv thaiv kev tawg ntawm kev ua haujlwm.
(3) Welders yuav tsum hnav looj tsom iav thaum vuam.
(4) Qhov chaw uas lub tshuab vuam yog muab tso rau hauv qhov chaw yuav tsum tau qhuav, thiab hauv av yuav tsum tau npog nrog cov ntaub thaiv npog.
(5) Tom qab ua haujlwm vuam, lub zog hluav taws xob yuav tsum raug txiav tawm, thiab qhov hloov dej txias yuav tsum txuas ntxiv rau 10 vib nas this ua ntej kaw.Thaum qhov kub thiab txias tsis tshua muaj, cov dej ntim hauv cov dej yuav tsum tau muab tshem tawm kom tsis txhob khov.
Post lub sij hawm: Lub Xya hli ntuj-31-2023