Thaum lub sij hawm surfacing welding ntawm 304 stainless hlau sawb, ntau yam tsis xws luag yuav tshwm sim.Qee qhov tsis xws luag xws li:
1.Porosity:
Porosity yog hais txog qhov muaj cov voids me me los yog cov hnab ntim roj hauv cov khoom siv welded.Nws tuaj yeem tshwm sim los ntawm ntau yam xws li kev tiv thaiv roj tsis txaus, cov pa roj tsis zoo, cov hlau tsis huv, lossis cov txheej txheem vuam tsis raug.Porosity tuaj yeem ua rau lub vuam tsis muaj zog thiab txo nws cov corrosion kuj.
2. Kev tawg:
Cov kab nrib pleb tuaj yeem tshwm sim hauv qhov vuam lossis hauv thaj chaw muaj kev kub ntxhov (HAZ).Kev tawg tuaj yeem tshwm sim los ntawm ntau yam xws li cov khoom siv hluav taws xob siab, cua txias sai, tsis raug preheating lossis interpass kub tswj, kev ntxhov siab ntau dhau, lossis muaj cov impurities hauv lub hauv paus hlau.Cov kab nrib pleb tuaj yeem cuam tshuam qhov kev ncaj ncees ntawm cov khoom siv.
3.Incomplete fusion lossis incomplete penetration:
Tsis tiav fusion tshwm sim thaum cov hlau muab tub lim tsis fuse tag nrho nrog lub hauv paus hlau lossis cov hlaws dai uas nyob ib sab.Kev nkag mus tsis tiav yog hais txog qhov xwm txheej uas qhov vuam tsis nkag mus rau tag nrho cov tuab ntawm kev sib koom ua ke.Cov kev tsis zoo no tuaj yeem tshwm sim los ntawm cov khoom siv hluav taws xob tsis txaus, cov txheej txheem vuam tsis raug, lossis kev npaj tsis raug.
4. Kev txiav txim siab:
Undercutting yog tsim ntawm ib tug zawj los yog kev nyuaj siab nyob rau hauv lub weld ntiv taw los yog nyob ib sab ntawm nws.Nws tuaj yeem tshwm sim los ntawm ntau dhau tam sim no lossis kev mus ncig ceev, lub kaum sab xis electrode tsis raug, lossis cov txheej txheem vuam tsis raug.Undercutting tuaj yeem ua rau lub vuam tsis muaj zog thiab ua rau muaj kev ntxhov siab.
5. Ntau dhau spatter:
Spatter yog hais txog kev tshem tawm ntawm cov hlau molten thaum lub sij hawm vuam.Kev sib tsoo ntau dhau tuaj yeem tshwm sim vim muaj yam xws li vuam tam sim no, tsis raug tiv thaiv cov roj ntws tsis raug, lossis lub kaum sab xis electrode tsis raug.Spatter tuaj yeem ua rau lub ntsej muag tsis zoo thiab tej zaum yuav xav tau kev ntxuav ntxiv tom qab vuam.
6.Distortion:
Distortion yog hais txog deformation los yog warping ntawm lub hauv paus hlau los yog welded sib koom ua ke thaum vuam.Nws tuaj yeem tshwm sim vim qhov tsis sib xws ntawm cov cua sov thiab cua txias ntawm cov khoom siv, kev kho tsis zoo los yog clamping, los yog tso tawm cov kev ntxhov siab uas seem.Distortion tuaj yeem cuam tshuam qhov tseeb qhov tseeb thiab haum ntawm cov khoom siv welded.
Txhawm rau txo cov kev tsis zoo no thaum lub caij welding ntawm 304 stainless hlau sawb, nws yog ib qho tseem ceeb uas yuav tsum tau ua raws li cov txheej txheem vuam kom zoo, xyuas kom muaj kev sib koom ua ke tsim nyog, tswj cov khoom siv hluav taws xob kom zoo thiab tiv thaiv cov roj, thiab siv cov txheej txheem vuam tsim nyog.Tsis tas li ntawd, kev kho cua sov ua ntej thiab tom qab vuam, nrog rau cov txheej txheem kuaj tsis muaj kev puas tsuaj, tuaj yeem ua haujlwm los txheeb xyuas thiab txo qis qhov tsis xws luag.
Post lub sij hawm: May-31-2023