1. Lub vuam yuav tsum ruaj khov thiab txhim khu kev qha, thiab cov vuam ntawm qhov chaw sab nrauv yuav tsum tau ntim rau hauv qhov chaw, tsis muaj qhov khoob.
2. Lub vuam seam yuav tsum zoo huv si thiab sib xws, thiab tsis muaj qhov tsis xws luag xws li tawg, undercuts, qhov khoob, kub hnyiab, thiab lwm yam.Yuav tsum tsis muaj qhov tsis xws luag xws li slag inclusions, pores, weld pob, pits, thiab lwm yam nyob rau sab nrauv, thiab sab hauv yuav tsum tsis pom tseeb.
 
3. Qhov saum npoo ntawm cov khoom yuav tsum tau smoothed thiab polished tom qab vuam, thiab qhov roughness tus nqi yog 12.5.Rau qhov chaw vuam nyob rau hauv tib lub dav hlau, yuav tsum tsis muaj qhov pom kev thiab kev nyuaj siab ntawm qhov chaw tom qab kev kho mob.
4 Kev ua haujlwm vuam yuav tsum tsim cov txheej txheem los tshem tawm kev ntxhov siab vuam ntau li ntau tau.Yuav tsum muaj cov cuab yeej thaum vuam thiab tsis muaj deformation ntawm qhov chaw vim vuam raug tso cai.Yog tias tsim nyog, lub workpiece yuav tsum raug kho tom qab vuam.Sib sau ua ke raws li qhov yuav tsum tau ua ntawm cov duab kos, thiab tsis muaj qhov ploj, tsis raug, lossis tsis raug txoj haujlwm raug tso cai.
5. Txhawm rau tiv thaiv qhov tshwm sim ntawm vuam qhov pores, vuam qhov chaw yuav tsum tau ntxuav yog tias muaj xeb, roj stains, thiab lwm yam.

6. Txhawm rau ua kom cov roj argon zoo tiv thaiv lub vuam pas dej thiab ua kom yooj yim rau kev siv vuam, qhov nruab nrab ntawm tungsten electrode thiab vuam workpiece feem ntau yuav tsum tuav lub kaum sab xis ntawm 80 ~ 85 °.Lub kaum sab xis ntawm cov xaim xaim thiab qhov chaw ntawm lub workpiece yuav tsum me me li sai tau, feem ntau yog li 10 °.
7. Feem ntau haum rau vuam ntawm nyias daim hlau hauv qab 6 hli, nrog rau cov yam ntxwv zoo nkauj vuam seam zoo thiab me me vuam deformation