Zvakajairwa kuti mapaipi akaiswa kabhoni simbi ive nemhepo mabubbles muweld, kunyanya hombe-diameter carbon seamless steel pipe weld pores haingokanganisa kusimba kwepombi weld uye kukonzera kubuda kwepombi, asi zvakare inove iyo induction point yekuora, iyo zvinoderedza zvakanyanya kusimba uye kusimba kweiyo weld. . Izvo zvinokonzeresa porosity muweld ndeiyi: hunyoro, tsvina, oxide sikeri uye mafirita esimbi mukuyerera, zvinhu zvewelding uye ukobvu hwekufukidzira, kunaka kwepamusoro kweplate resimbi uye kurapwa kwendiro yesimbi yepadivi, welding process uye simbi pombi. kugadzira nzira, nezvimwewo Flux kuumbwa. Kana welding iine huwandu hwakakodzera hweCaF2 neSiO2, ichaita uye inotora huwandu hukuru hweH2, uye inogadzira HF ine kugadzikana kwepamusoro uye isinganyungudika musimbi yemvura, inogona kudzivirira kuumbwa kwehydrogen pores.

Mabhururu anowanzoitika pakati pe weld bead. Chikonzero chikuru ndechekuti haidhirojeni ichiri yakavanzwa mukati mesimbi yeweld nenzira yemabhuru. Naizvozvo, chiyero chekubvisa chikanganiso ichi ndechekutanga kubvisa ngura, mafuta, hunyoro uye hunyoro kubva kune welding waya uye weld. uye zvimwe zvinhu, zvinoteverwa nokuyerera zvinofanira kuomeswa zvakanaka kubvisa mwando. Pamusoro pezvo, inoshandawo kuwedzera ikozvino, kuderedza kumhanya kwewelding, uye kuderedza kusimba kwesimbi yakanyungudutswa.

Iko kuunganidza ukobvu hwekuyerera kunowanzo 25-45mm. Iyo yakakura particle size ye flux uye diki density inotorwa seyakanyanya kukosha, kana zvisina kudaro iyo shoma kukosha inoshandiswa; iyo yakanyanya ikozvino uye yakaderera welding kasi inoshandiswa pakuunganidza ukobvu, uye iyo shoma kukosha inoshandiswa pane zvinopesana. Kana hunyoro hwakakwirira, iyo inodzoreredzwa flux inofanira kuomeswa isati yashandiswa. Sulfur cracking (pakatsemuka zvinokonzerwa nesarufa). Kutsemuka kunokonzerwa nesarufa mubhandi rekuparadzanisa sarufa ichipinda musimbi yeweld painopinza mahwendefa ane mabhandi akasimba ekuparadzanisa sarufa (kunyanya simbi yakapfava). Chikonzero cheizvi kuvepo kwehydrogen mu iron sulfide uye simbi ine yakaderera kunyungudika munzvimbo yesarufa yekuparadzanisa. Nokudaro, kuitira kudzivirira izvi kuti zvirege kuitika, zvinoshandawo kushandisa semi-yakaurayiwa simbi kana simbi yakaurayiwa ine zvishoma sulfuri-ine segregation bands.