1. Inkcazo ye-CO2 yegesi ekhuselweyo ye-welding yindlela ye-gas ekhuselekileyo ye-arc ye-arc usebenzisa i-CO2 igesi ecocekileyo ngaphezu kwe-99.8% (indlela yevolumu) njengegesi yokukhusela.Inguqu yesiphaluka esifutshane, utshintsho lwesitshizi kunye nenguqu ye-pulse spray ingasetyenziselwa ukuwelda.Ingasetyenziselwa ukuwelda indawo, ukuwelda ngokuthe nkqo, ukuwelda okuthe tye, ukuwelda ngaphezulu kunye nayo yonke indawo yokuwelda.Kufanelekile ngokukhethekileyo ukuthunga izinto zetsimbi ezimnyama ezifana ne-carbon steel, i-alloy steel kunye nensimbi engenasici.

2. Ukuphuhlisa i-carbon dioxide gas shielded welding yiteknoloji entsha ye-welding eyaphuhliswa kwi-1950s.Kwisiqingatha senkulungwane edlulileyo, iye yaphuhla yaba yindlela ebalulekileyo yokudibanisa i-welding.Isetyenziswa kakhulu kushishino lweemoto, ukwenza oomatshini bokwakha, ukwakhiwa kweenqanawa, ukwenziwa kweenqwelomoya, ukwenziwa kweelevator, ukwenziwa kwebhoyila kunye noxinzelelo lwenqanawa, kunye nokuveliswa kwezakhiwo ezahlukeneyo zetsimbi kunye noomatshini bokwenza isinyithi.Ikharbhon diokside igesi ekhuselwe ukuwelda ineengenelo zomgangatho olungileyo wokuwelda, ixabiso eliphantsi kunye nokusebenza okulula.Sisigqibo esele silindelwe ukuba sithathe indawo ye-arc ye-arc yezandla kunye ne-arc efakwe emanzini.Kwaye i-carbon dioxide gas shielded welding kulula ukuyiqonda i-NC welding kwi-manipulator okanye irobhothi, eya kuba yeyona ndlela iphambili ye-welding ekuqaleni kwenkulungwane yama-21.Okwangoku, igesi ekhuselayo esetyenziswa kwi-carbon dioxide gas shielded welding yahlulwe kwi-CO2 kunye ne-CO2 + ar.Iingcingo zokuwelda ezisetyenziswayo ikakhulu yi-manganese silicon alloy welding wire, i-ultra-low carbon alloy welding wire kunye ne-flux cored welding wire.Iimpawu eziphambili zocingo lwe-welding zezi: 0.5 ﹐ 0.8 ﹐ 0.9 ﹐ 1.0 ﹐ 1.2 ﹐ 1.6 ﹐ 2.0 ﹐ 2.5 ﹐ 3.0 ﹐ 4.0, njl.

3. Iimpawu 3.1 ixabiso eliphantsi le-welding.Igesi ye-CO2 yimveliso ephuma kwimizi-mveliso yotywala kunye nezityalo zekhemikhali, ezinemithombo ebanzi kunye nexabiso eliphantsi.Iindleko zayo yi-40 ~ 50% kuphela ye-arc ye-arc engaphantsi kwamanzi kunye ne-arc welding manual.I-3.2 imveliso ephezulu, ukungena okunamandla kwe-CO2 arc, ubunzulu obukhulu bokunyibilika, izinga eliphezulu lokunyibilika kocingo lwe-welding kunye nesantya sokubeka ngokukhawuleza.Imveliso yayo 1 ~ 4 amaxesha ukuba manual arc welding.3.3 Uluhlu olubanzi lwesicelo.Ipleyiti ebhityileyo, ipleyiti ephakathi kunye nepleyiti eshinyeneyo inokudityaniswa.I-deformation yepleyiti encinci ngexesha le-welding incinci, kwaye yonke indawo ye-welding inokuqhutywa.3.4 ukuxhathisa okuqinileyo komhlwa, umxholo ophantsi we-hydrogen kwi-weld kunye nokumelana nokuqhekeka okulungileyo.3.5 ukususwa kwe-slag akufuneki emva kwe-welding.3.6 ngenxa ye-arc evulekileyo, kulula ukubeka iliso kunye nokulawula ngexesha le-welding.

4. Izinto ze-CO2 ze-welding 4.1.CO2 igesi 4.1.1co2 iipropati zegesi ecocekileyo CO2 irhasi ayinambala kwaye imuncu kancinane.Ubuninzi be-1.97kg/m3, obunzima kunomoya.Xa irhasi ye-CO2 icinezelwe ukuya kwi-5 ~ 7MPa kwiqondo lobushushu begumbi, iba lulwelo.I-CO2 yolwelo ilula ngokwentelekiso kwiqondo lobushushu begumbi.Kwi-0 ℃, i-0.1MPa, i-1kg yolwelo lwe-CO2 inokuvelisa i-509l yegesi ye-CO2.

I-4.1.2 igesi ye-CO2 yebhotile ithatha i-40L i-cylinder yensimbi eqhelekileyo, enokuthi izaliswe nge-25kg ye-CO2 ye-liquid, ibalwa malunga ne-80% ye-cylinder yensimbi, kwaye indawo eseleyo ye-20% igcwele igesi ye-CO2.Kwi-0 ℃, uxinzelelo olugcweleyo luyi-3.63mpa;Kwi-20 ℃, uxinzelelo lwe-saturation yi-5.72mpa;Kwi-30 ℃, uxinzelelo olugcweleyo yi-7.48 MPa.Ngoko ke, isilinda CO2 iya kukhuselwa elangeni okanye kufutshane nomthombo wobushushu ukunqanda ugqabhuko-dubulo.

4.1.3 impembelelo ye-CO2 yokucoceka kwegesi kumgangatho we-welding