Uyini Umehluko Phakathi Kwe-Thoriated Tungsten Ne-Lanthana Electrodes?

2. Izici zokusebenza:

Ukusebenza kwe-electron emission

I-Thoriumi-electrode ye-tungsten: Ngenxa yokubola kwe-radioactive ye-thorium element, amanye ama-electron amahhala azokhiqizwa ebusweni be-electrode. Lawa ma-electron asiza ukunciphisa umsebenzi we-electrode, ngaleyo ndlela enze ikhono lokukhipha i-electron libe namandla. Ingase futhi ikhiphe ama-electron azinze emazingeni okushisa aphansi, okwenza isebenze kangcono kwezinye izikhathi ezifana nokushisela i-AC lapho kudingeka khona ukuqaliswa kwe-arc njalo.

I-Lanthanum tungsten electrode: Ukusebenza kwe-electron emission nakho kuhle kakhulu. Nakuba kungekho ukukhishwa kwe-electron eyi-radioactive asizayo, i-lanthanum oxide ingacwengisa ukwakheka kokusanhlamvu kwe-tungsten futhi igcine i-electrode isesimweni esihle sokukhishwa kwe-electron ekushiseni okuphezulu. Enqubweni ye-welding ye-DC, inganikeza i-arc ezinzile futhi yenze ikhwalithi yokushisela ibe yinto efanayo.

Ukumelana okuvuthayo

I-electrode ye-thorium tungsten: Endaweni yokushisa ephezulu, ngenxa yokuba khona kwe-thorium oxide, ukumelana nokushiswa kwe-electrode kungathuthukiswa ngezinga elithile. Kodwa-ke, ngokunyuka kwesikhathi sokusetshenziswa kanye nokwanda kwe-welding current, ikhanda le-electrode lisazovutha ngezinga elithile.

I-Lanthanum tungsten electrode: Inokumelana nokusha okuhle. I-Lanthanum oxide ingakha ifilimu evikelayo endaweni ye-electrode ekushiseni okuphezulu ukuvimbela i-oxidation eyengeziwe nokushiswa kwe-tungsten. Ngesikhathi sokushisela okuphezulu kwamanje noma imisebenzi yokushisela yesikhathi eside, ukuma kokuphela kwe-lanthanum tungsten electrode kungahlala kuzinzile, kunciphisa inani lokushintshwa kwama-electrode njalo.

Ukusebenza kokuqala kwe-arc

I-electrode ye-thorium tungsten: Kulula kakhulu ukuqala i-arc, ngoba umsebenzi wayo ophansi womsebenzi uvumela ukuthi kusungulwe umzila we-conductive phakathi kwe-electrode kanye ne-weldment ngokushesha ngesikhathi sokuqala kwe-arc, futhi i-arc ingavuthwa ngokushelelayo.

I-Lanthanum tungsten electrode: Ukusebenza kokuqala kwe-arc kungaphansi kancane kuleyo ye-thorium tungsten electrode, kodwa ngaphansi kwezilungiselelo ezifanele zepharamitha yemishini yokushisela, isengakwazi ukufeza umphumela omuhle wokuqala we-arc. Futhi yenza kahle ekuzinzeni kwe-arc ngemuva kokuqala kwe-arc.

3. Izimo zohlelo lokusebenza

I-Thoriumi-electrode ye-tungsten

Ngenxa yokusebenza kwayo okuhle kwe-electron emission kanye nokusebenza kokuqala kwe-arc, ivame ukusetshenziswa ku-AC argon arc welding, ikakhulukazi uma i-welding aluminium, i-magnesium nama-alloys ayo nezinye izinto ezinezidingo zokuqala ze-arc. Kodwa-ke, ngenxa yobukhona be-radioactivity, ukusetshenziswa kwayo kukhawulelwe kwezinye izikhathi ngezidingo eziqinile zokuvikela emisebeni, njengokukhiqiza imishini yezokwelapha, ukushisela imishini yemboni yokudla neminye imikhakha.

I-Lanthanum tungsten electrode

Ngenxa yokuthi ayikho ingozi ye-radioactive, uhla lwayo lokusebenza lubanzi. Ingasetshenziswa ku-DC argon arc welding kanye nezinye ze-AC argon arc welding scenarios. Lapho izinto zokushisela ezifana nensimbi engagqwali, i-carbon steel, i-copper alloy, njll., ingasebenzisa ukusebenza kwayo kwe-arc okuzinzile kanye nokumelana okuhle kokushiswa kokuqinisekisa ikhwalithi yokushisela.

4. Ukuphepha

I-thorium tungsten electrode: Ngenxa yokuthi iqukethe i-thorium oxide, into ekhipha imisebe, izokhiqiza izingozi ezithile zomsakazo ngesikhathi sokusetshenziswa. Uma kuvezwe isikhathi eside, kungase kube nemiphumela emibi empilweni yabasebenzi, okuhlanganisa nokwandisa ingozi yezifo ezifana nomdlavuza. Ngakho-ke, lapho usebenzisa ama-electrode e-tungsten athosiwe, izinyathelo eziqinile zokuvikela imisebe kufanele zithathwe, njengokugqoka izingubo zokuzivikela nokusebenzisa izinto zokuqapha imisebe.

Ama-electrode e-lanthanum tungsten: awaqukethe izinto ezikhipha imisebe, aphephile uma kuqhathaniswa, futhi akudingeki ukhathazeke ngokungcoliswa kwemisebe ngesikhathi sokusetshenziswa, ukuhlangabezana nezimfuneko zokuvikelwa kwemvelo kanye nezempilo nokuphepha.