Vuam distortion yog ib qho kev sib tw uas tau ntsib nyob rau hauv ntau yam txheej txheem vuam, nrog rau lub zog cia vuam tshuab. Cov cua sov tsim thaum lub sij hawm vuam tuaj yeem ua rau cov khoom nthuav dav thiab kev cog lus, ua rau tsis xav deformations hauv cov khoom siv welded. Tsab ntawv xov xwm no yog txhawm rau tshawb nrhiav cov tswv yim rau kev tswj hwm zoo thiab txo qis kev sib txawv ntawm kev sib tsoo hauv lub zog cia vuam tshuab. Los ntawm kev siv cov txheej txheem tsim nyog, welders tuaj yeem xyuas kom meej tias qhov kawg welded qauv ua tau raws li qhov xav tau tshwj xeeb thiab kam rau ua.
- Vuam Sequence thiab Technique: Kev sib txuas vuam zoo thiab cov txheej txheem tuaj yeem cuam tshuam qhov tshwm sim thiab qhov loj ntawm vuam distortion. Nws yog ib qho tseem ceeb los npaj cov txheej txheem vuam nyob rau hauv ib txoj kev uas txo cov tsub zuj zuj ntawm residual stresses thiab thermal gradients. Welders yuav tsum xav txog pib ntawm qhov chaw thiab tawm mus sab nraud lossis siv cov txheej txheem rov qab los faib cov cua sov kom sib npaug. Tsis tas li ntawd, kev siv cov txheej txheem vuam sib cuam tshuam thiab txo qis ntawm cov vuam hla dhau tuaj yeem pab txo qis kev cuam tshuam.
- Fixture thiab Clamping: Siv cov cuab yeej tsim nyog thiab cov txheej txheem clamping yog qhov tseem ceeb rau kev tswj vuam distortion. Fixtures muab kev txhawb nqa thiab pab tswj qhov xav tau kev sib dhos thaum lub vuam. Cov txheej txheem clamping kom raug, xws li tack welding lossis siv cov jigs tshwj xeeb, tuaj yeem pab txhim kho cov khoom ua haujlwm kom raug, txo qis zog thiab cuam tshuam thaum lub sijhawm vuam.
- Preheating thiab Post-Weld Thaum tshav kub kub kho: Preheating cov khoom siv ua ntej vuam tuaj yeem pab txo qis qhov kub thiab txias thiab txo qhov cuam tshuam. Cov txheej txheem no tshwj xeeb tshaj yog rau cov ntaub ntawv tuab lossis thaum vuam sib txawv. Ib yam li ntawd, cov txheej txheem kev kho cua sov tom qab vuam, xws li kev ntxhov siab nyem annealing, tuaj yeem ua haujlwm los txo cov kev ntxhov siab uas seem thiab txo qis kev cuam tshuam. Qhov tshwj xeeb preheating thiab kev kho cua sov tsis yuav tsum tau txiav txim siab raws li cov khoom siv thiab cov kev xav tau vuam.
- Welding Parameters thiab Joint Design: Kho qhov vuam tsis zoo, xws li cov khoom siv hluav taws xob, vuam ceev, thiab kev xaiv hlau muab tub lim, tuaj yeem cuam tshuam cov qib distortion. Welders yuav tsum ua kom zoo dua cov kev txwv no kom ua tiav qhov sib npaug ntawm kev nkag mus, fusion, thiab kev tswj tsis sib haum. Tsis tas li ntawd, kev sib koom tsim qauv tuaj yeem ua lub luag haujlwm tseem ceeb hauv kev txo qis kev cuam tshuam. Kev siv cov txheej txheem xws li chamfering, grooving, los yog siv ob txoj kev vuam tuaj yeem pab faib cov cua sov thiab txo qhov cuam tshuam kev cuam tshuam.
- Post-Weld Distortion Correction: Nyob rau hauv rooj plaub uas qhov vuam distortion yog yam tsis muaj kev zam, kev kho tom qab vuam distortion tuaj yeem ua haujlwm. Cov no muaj xws li cov txheej txheem xws li mechanical straightening, heat straightening, los yog localized re-welding. Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias txoj kev kho tom qab vuam yuav tsum tau siv ceev faj thiab los ntawm cov kws tshaj lij kom tsis txhob cuam tshuam qhov kev ncaj ncees ntawm cov qauv welded.
Vuam distortion yog ib qho kev sib tw uas tau ntsib thaum lub sij hawm vuam, thiab lub zog cia vuam tshuab tsis muaj qhov tshwj xeeb. Los ntawm kev siv cov txheej txheem vuam kom zoo, siv cov khoom sib dhos thiab clamping, txiav txim siab ua ntej thiab tom qab vuam kev kho cua sov, ua kom cov vuam tsis zoo, thiab siv cov txheej txheem tom qab vuam distortion thaum tsim nyog, cov vuam tuaj yeem tswj tau zoo thiab txo qhov vuam distortion. Nws yog ib qho tseem ceeb kom nkag siab txog cov khoom siv tshwj xeeb, kev tsim qauv sib koom ua ke, thiab cov kev xav tau ntawm vuam los tsim cov tswv yim tsim nyog rau kev tswj kev cuam tshuam thiab ua kom ntseeg tau qhov zoo thiab kev ncaj ncees ntawm cov khoom siv welded.
Post lub sij hawm: Jun-13-2023
