Iziphene ezinokuthi zenzeke kwindawo ye-arc welding ephantsi kwamanzi ziquka ii-pores, ii-cracks ze-thermal, kunye ne-undercuts.

1. Amaqamza. Amaqamza avela kumbindi we weld. Isizathu esona sizathu kukuba i-hydrogen isafihliwe kwintsimbi edibeneyo ngendlela yamaqamza. Ngoko ke, amanyathelo okuphelisa esi siphene kukuqala ukususa i-rust, ioli, amanzi, kunye nokufuma kwi-welding wire kunye ne-weld, kwaye okwesibini, ukomisa i-flux kakuhle ukususa umswakama. Ukongeza, ukwandisa okwangoku, ukunciphisa isantya se-welding, kunye nokucotha izinga lokuqiniswa kwesinyithi esityhidiweyo kusebenza kakhulu.

2. Iintanda zesulfure (iintanda ezibangelwa yisulfure). Xa iipleyiti ze-welding ezineebhendi eziqinileyo zokwahlula isulfure (ingakumbi isinyithi esithambileyo esibilayo), i-sulfides kwibhanti yokwahlula isulfure ingena kwintsimbi ye-weld kwaye ibangele ukuqhekeka. Isizathu kukuba kukho indawo ephantsi yokunyibilika kwe-iron sulfide kwi-band ye-sulfur segregation kunye ne-hydrogen kwintsimbi. Ngoko ke, ukuthintela ukuba le meko ingenzeki, kuyasebenza ukusebenzisa isinyithi esine-semi-killed okanye intsimbi ebuleweyo kunye neebhanti ezimbalwa zokuhlukaniswa kwesulfure. Okwesibini, ukucoca kunye nokomisa umphezulu we-weld kunye ne-flux nazo ziyimfuneko kakhulu.

3. Ukuqhekeka kwe-thermal. Kwi-welding ye-arc ephantsi kwamanzi, ukuqhekeka kwe-thermal kunokwenzeka kwi-weld, ngakumbi kwimigodi ye-arc ekuqaleni nasekupheleni kwe-arc. Ukuphelisa ukuqhekeka okunjalo, iipads zivame ukufakwa ekuqaleni nasekupheleni kwe-arc, kwaye ekupheleni kwe-plate coil welding, i-spiral welded pipe inokuguqulwa kwaye ifakwe kwi-overlap. Ukuqhekeka kwe-thermal kulula ukwenzeka xa uxinzelelo lwe-weld lukhulu kakhulu okanye i-weld metal iphezulu kakhulu.

4. Ukufakwa kwe-slag. Ukufakwa kwe-slag kuthetha ukuba inxalenye ye-slag ihlala kwi-weld metal.

5. Ukungena kakubi. Ukudityaniswa kwentsimbi yangaphakathi nangaphandle ye weld akwanelanga, kwaye ngamanye amaxesha ayidityaniswanga. Le meko ibizwa ngokuba kukungangeni ngokwaneleyo.

6. I-Undercut. I-Undercut yigroove emile okwe-V kumda we weld ecaleni komgca osembindini we weld. I-Undercut ibangelwa iimeko ezingafanelekanga ezifana nesantya se-welding, okwangoku, kunye nombane. Phakathi kwabo, isantya esiphezulu kakhulu se-welding sinokubangela ukuba kubekho iziphene ezingaphantsi kweendlela ezingafanelekanga zangoku.