1. Incazelo i-CO2 igesi evikelekile iyindlela yokuvikela i-arc yensimbi evikelekile esebenzisa igesi le-CO2 ngobumsulwa obungaphezulu kwama-99.8% (indlela yevolumu) njengegesi evikelayo. Ukushintshwa kwesifunda okufushane, ukuguqulwa kwesifutho nokushaywa kwe-pulse spray kungasetshenziselwa ukushisela. Ingasetshenziselwa indawo Welding, Welding mpo, Welding ovundlile, phezulu Welding futhi konke Welding isikhundla. It is ikakhulukazi efanelekayo Welding black metal izinto ezifana carbon steel, ingxubevange steel kanye insimbi engagqwali.

2. Ukuthuthukisa ukushisela okuvikela i-carbon dioxide gas evikelekile ubuchwepheshe obusha bokushisela obenziwa ngama-1950s. Esikhathini esidlule sekhulu leminyaka, sekukhule kwaba yindlela ebalulekile yokuhlanganisa i-fusion. Isetshenziswa kabanzi embonini yezimoto, ekwakhiweni kwemishini yokwakha, ekwakheni imikhumbi, ekukhiqizeni izitimela, ekukhiqizeni ikheshi, ekubhebhiseni nasekukhiqizeni umkhumbi ngomfutho, nokukhiqizwa kwezinhlaka ezahlukahlukene zensimbi nemishini yokucubungula izinsimbi. I-Carbon dioxide gas welding welding inezinzuzo zekhwalithi enhle ye-welding, izindleko eziphansi nokusebenza okulula. Kuyisiphetho esedlule ukuthi kufakwe insimbi ye-arc eningi kakhulu kanye nokushisela i-arc egxilile. Futhi i-carbon dioxide gas welding welding kulula ukuyibona i-NC welding ku-manipulator noma i-robot, ezoba yindlela yokushisela eyinhloko ekuqaleni kwekhulu lama-21. Njengamanje, igesi evikelayo esetshenziswa ku-carbon dioxide gas welding welding ihlukaniswe yaba yi-CO2 ne-CO2 + ar. Izintambo zokushisela ezisetshenzisiwe ikakhulukazi ucingo lwe-manganese silicon alloy welding, i-ultra-low carbon alloy welding wire kanye ne-cored welding wire. Imininingwane eyinhloko yocingo lokushisela yilezi: 0.5 ﹐ 0.8 ﹐ 0.9 ﹐ 1.0 ﹐ 1.2 ﹐ 1.6 ﹐ 2.0 ﹐ 2.5 ﹐ 3.0 ﹐ 4.0, njll.

3. Izici 3.1 eziphansi zokushisela izindleko. Igesi le-CO2 liwumkhiqizo wezindawo zokuphisa utshwala nezitshalo zamakhemikhali, ezinemithombo ebanzi nentengo ephansi. Izindleko zayo zingama-40 ~ 50% kuphela walokho kwe-welding arc egxilile kanye ne-manual arc welding. Ukukhiqizwa okuphezulu kwe-3.2, ukungena okuqinile kwe-CO2 arc, ukujula okukhulu kokuncibilika, izinga lokuncibilika okuphezulu kwentambo yokushisela nejubane lokufaka ngokushesha. Ukukhiqiza kwayo kuyizikhathi ezi-1 ~ ezi-4 zokushisela i-arc ngesandla. 3.3 ububanzi besicelo. Ipuleti elincane, ipuleti eliphakathi nendawo ngisho nepuleti eliwugqinsi lingashiselwa. Ukusonteka kwepuleti elincanyana ngesikhathi sokushisela kuncane, futhi konke ukushisela kwesikhundla kungenziwa. Ukumelana nokugqwala okuqinile kwe-3.4, okuqukethwe okuphansi kwe-hydrogen ku-weld nokumelana okuhle kokuqhekeka. Ukususwa kwe-slag kwe-3.5 akudingeki ngemuva kokushisela. 3.6 ngenxa ye-arc evulekile, kulula ukuqapha nokulawula ngesikhathi sokushisela.

4. Izinto zokushisela ze-CO2 4.1. Igesi le-CO2 4.1.1co2 izakhiwo zegesi ezimsulwa igesi i-CO2 ayinambala futhi imuncu kancane. Ubuningi bungu-1.97kg / m3, obunzima kunomoya. Lapho igesi le-CO2 licindezelwa laya ku-5 ~ 7MPa ekamelweni lokushisa, liba uketshezi. I-Liquid CO2 ilula kancane ekamelweni lokushisa. Ku-0 ℃, 0.1MPa, 1kg we-liquid CO2 angakhiqiza i-509l yegesi le-CO2.

4.1.2 igesi yamabhodlela e-CO2 yamukela isilinda yensimbi engu-40L ejwayelekile, engagcwaliswa ngo-25kg ketshezi i-CO2, ebala cishe u-80% wesilinda sensimbi, kanti isikhala esisele esingu-20% sigcwele igesi le-CO2. Ku-0 ℃, ingcindezi egcwele i-3.63mpa; Ku-20 ℃, ingcindezi ye-saturation ingu-5.72mpa; Ku-30 ℃, ingcindezi egcwele i-7.48 MPa. Ngakho-ke, isilinda se-CO2 sizovikelwa elangeni noma eduze komthombo wokushisa ukugwema ukuqhuma.

4.1.3 ithonya lokuhlanzeka kwegesi i-CO2 kukhwalithi yokushisela