Iyiphi igesi esetshenziswa umshini wokusika igesi we-cnc?

1. Iyiphi igesi esetshenziswa umshini wokusika igesi we-cnc?

Umshini wokusika igesi we-cnc uwuhlobo lwemishini yokucubungula esebenzisa ukushisa kwe-high-temperature plasma arc ukuze incibilike endaweni (futhi ihwamuke) insimbi ekusikeni kwendawo yokusebenza, futhi isebenzisa umfutho we-plasma enesivinini esikhulu ukususa okuncibilikisiwe. metal ukwakha imbobo.Umoya-mpilo usika izinsimbi okuqinile ukuzisika.Ngokuvamile esetshenziswa cnc igesi cutting machine amagesi ukusebenza yilezi:

1. Umoya

Umoya uqukethe cishe u-78% we-nitrogen ngevolumu, ngakho-ke ukwakheka kwe-slag okwenziwe ukusika umoya kufana kakhulu nalokho lapho usika nge-nitrogen;ngaphezu kwalokho, umoya uqukethe cishe u-21% we-oxygen ngevolumu.Ijubane lokusika umoya izinto zensimbi emnene nalo liphezulu kakhulu;ngesikhathi esifanayo, umoya ubuye ube yigesi esebenzayo eyonga kakhulu, futhi ama-nozzles nama-electrode asetshenziswayo anokuphila kwesevisi ephezulu.

2. Umoya-mpilo

Umshini wokusika igesi we-cnc osebenzisa i-oksijeni njengegesi esebenzayo ungandisa ijubane lokusika izinto zensimbi ezithambile, kodwa lapho umoya-mpilo usetshenziselwa ukusika yedwa, kuzoba ne-dross ne-kerf oxidation, futhi ukuphila kwama-electrode nama-nozzles kuphansi, okuyinto izophinde ithinte ukusebenza kahle komsebenzi.kanye nokunciphisa izindleko.

3. I-Argon

I-Argon gas ayiphenduli neze nanoma iyiphi insimbi ekushiseni okuphezulu, i-argon esetshenziswa umshini wokusika igesi ye-cnc izinzile kakhulu, futhi ama-nozzles nama-electrode asetshenzisiwe anokuphila okude kwenkonzo.Kodwa-ke, i-argon plasma arc ine-voltage ephansi, i-enthalpy ephansi, kanye nekhono lokusika elilinganiselwe.Uma kuqhathaniswa nokusika komoya, ubukhulu bemishini yokusika igesi ye-cnc buzoncishiswa cishe ngama-25%.Ukwengeza, endaweni yokuvikela i-argon, ukungezwani okungaphezulu kwensimbi encibilikisiwe kukhulu, okungaba ngu-30% ngaphezulu kwalokho endaweni ye-nitrogen, ngakho-ke kuzoba nezinkinga eziningi ze-slag.Ngisho nokusika umshini wokusika igesi we-cnc ngengxube ye-argon namanye amagesi angaba nezinkinga zokunamathela kwe-slag.Ngenxa yalokho, i-argon ehlanzekile iyodwa ayivamile ukusetshenziselwa ukusika i-plasma namuhla.

4. I-hydrogen

I-Hydrogen ivame ukusetshenziswa njengegesi elisizayo ukuxuba namanye amagesi asetshenziswa umshini wokusika igesi we-cnc.Isibonelo, igesi eyaziwa kakhulu i-H35 (ingxenye yevolumu ye-hydrogen i-35%, kanti enye i-argon) ingenye yamagesi anamandla okusika i-arc arc ye-plasma, okubangelwa ikakhulukazi i-hydrogen.Njengoba i-hydrogen ingakhuphula kakhulu i-arc voltage, ijethi ye-hydrogen plasma inenani eliphakeme le-enthalpy.Uma ixubene ne-argon yomshini wokusika igesi ye-cnc, ikhono lokusika le-jet ye-plasma lithuthukiswa kakhulu.Ngokuvamile, ezintweni zensimbi ezinobukhulu obungaphezu kuka-70mm, i-argon + hydrogen ivame ukusetshenziswa.Njengegesi yokusika, uma ijethi lamanzi lisetshenziselwa ukuqhubeka nokucindezela i-argon + i-hydrogen plasma arc, ukusebenza kahle kokusika okuphezulu kungatholakala lapho ukusika umshini wokusika igesi we-cnc.

5. I-nitrogen

I-nitrogen iyigesi esebenza ngokujwayelekile yomshini wokusika igesi we-cnc.Ngaphansi kwesisekelo samandla kagesi aphezulu, i-nitrogen plasma arc inokungasebenzi okungcono namandla e-jet ephakeme kune-argon, ngisho nalapho isika izinto zensimbi eziwuketshezi ezine-viscosity ephezulu njenge-Stainless steel kanye nama-alloys asekelwe ku-nickel, inani le-slag elilengayo. emaphethelweni aphansi okusika nawo amancane kakhulu lapho i-cnc igesi yokusika umshini wokusika.Enkambweni yangempela yokusika, kunconywa ukuba ukhethe igesi esebenzayo efanelekile yomshini wokusika igesi ye-cnc ngokusho kwezidingo zakho zokusika kanye nezindleko zezomnotho.

Okwesibili, izidingo zomshini wokusika i-plasma emoyeni

Umshini wokusika i-Air plasma, njengoba negama libonisa, umshini wokusika i-plasma osebenzisa umoya njengegesi esebenzayo.Umshini wokusika igesi we-cnc unezidingo ezithile zomoya osetshenzisiwe:

Umoya osetshenziswa umshini wokusika igesi we-cnc umoya ocindezelweyo, odinga ukuthi igesi yome futhi ihlanzeke, futhi ukugeleza nokucindezela kuzinzile, ngoba ngesikhathi senqubo evamile yokusika umshini wokusika igesi ye-cnc, ukucindezela kwegesi. , ukugeleza komoya ozinzile, kanye nokomisa nokuhlanzeka kwegesi kunomthelela oqondile.Ikhwalithi yokusika umshini wokusika igesi ye-cnc nokuthi i-arc ingaqalwa ngokujwayelekile yini.Ngokuvamile, ingahlolwa ngezindlela ezilandelayo:

1. Hlola ukuthi ingabe igeji yomfutho womoya kuma-alamu omshini wokusika igesi we-cnc.Uma ama-alamu omshini wokusika igesi we-cnc, sicela uvule inkinobho yokulungisa umfutho womoya ukuze ukwandise umfutho womoya.

2. Hlola ukuthi ukugeleza komoya emshinini wokusika igesi ye-cnc kuyinto evamile, vula inkinobho yokukhishwa komoya ukuze unciphise ukuze ubone ukuthi igeji yokucindezela komoya iyehla yini, uma ukwehla kuningi, kusho ukuthi ukugeleza kwengcindezi yomoya akwanele. , khona-ke ithangi lokugcina igesi kufanele lengezwe phambi komshini wokusika igesi ye-cnc ukuze kuqinisekiswe ukuhamba kwegesi;

3. Hlola ukuthi igesi yomile futhi ihlanzekile, cindezela phansi kwesihlukanisi samanzi samafutha omshini wokusika igesi ye-cnc, bese uyikhipha.Uma kukhona uketshezi olumhlophe oluningi egesini ekhishiwe, kusho ukuthi kunamafutha amaningi namanzi emoyeni.Loluhlobo lomoya akufanele lusetshenziswe.