Ubuchwephesha be-Welding ye-TIG yokuwelda

I-welding current ye-tungsten inert gas arc welding idla ngokukhethwa ngokusekelwe kwizinto eziphathekayo, ubukhulu, kunye nesithuba sendawo yomsebenzi. Njengoko i-welding yangoku isanda, ubunzulu bokungena buyanda, kwaye ububanzi kunye nobude obugqithisileyo bomthungo we-weld buyanda, kodwa ukunyuka kuncinci. Ukugqithisa okanye ukungonelanga kwe-welding okwangoku kunokubangela ukwakheka kakubi kwe-weld okanye iziphene ze-welding.

I-voltage ye-arc ye-tungsten yegesi ye-inert ye-welding inqunywe ngokukodwa ubude be-arc. Njengoko ubude be-arc bukhula, i-voltage ye-arc iyanda, ububanzi be-weld buyanda, kwaye ubunzulu bokungena buyancipha. Xa i-arc ide kakhulu kwaye i-voltage ye-arc iphezulu kakhulu, kulula ukubangela i-welding engaphelelanga kunye ne-undercutting, kwaye umphumo wokukhusela awulungile.
Kodwa i-arc ayinakuba mfutshane kakhulu nayo. Ukuba i-voltage ye-arc iphantsi kakhulu okanye i-arc imfutshane kakhulu, i-welding wire ijwayele ukujikeleza okufutshane xa ichukumisa i-electrode ye-tungsten ngexesha lokutya, okubangela ukuba i-electrode ye-tungsten ivuthe kwaye ibambe ngokulula i-tungsten. Ngoko ke, ubude be-arc buqhele ukwenziwa ngokulingana nobubanzi be-electrode ye-tungsten.

Xa isantya se-welding sinyuka, ubunzulu kunye nobubanzi be-fusion buyancipha. Xa isantya se-welding sikhawuleza kakhulu, kulula ukuvelisa ukudibanisa okungaphelelanga kunye nokungena. Xa isantya sokuwelda sicotha kakhulu, i-weld seam ibanzi kwaye inokuba neziphene ezifana nokuvuza kwe-weld kunye nokutshisa. Ngexesha lokuwelda kwegesi ye-tungsten enert manual, isantya se-welding sihlala sihlengahlengiswa nangaliphi na ixesha ngokusekwe kubungakanani, imilo, kunye nemeko yokudibanisa kwechibi elinyibilikisiweyo.

1. Umbhobho wedayamitha
Xa i-nozzle ye-nozzle (ebhekisela kwi-diameter yangaphakathi) inyuka, izinga lokuhamba kwegesi yokukhusela kufuneka linyuswe. Ngeli xesha, indawo ekhuselweyo inkulu kwaye umphumo wokukhusela ulungile. Kodwa xa i-nozzle inkulu kakhulu, ayigcini nje ukwandisa ukusetyenziswa kwegesi ye-argon, kodwa yenza kube nzima ukujonga i-arc ye-welding kunye nokusebenza kwe-welding. Ke ngoko, ubukhulu bombhobho obusetyenziswa ngokuqhelekileyo buphakathi kwe-8mm kunye ne-20mm.

2. Umgama phakathi komlomo kunye ne-weldment
Umgama phakathi kwe-nozzle kunye ne-workpiece ibhekisela kumgama phakathi kobuso besiphelo sombhobho kunye nomsebenzi. Umncinci lo mgama, ngcono umphumo wokukhusela. Ngoko ke, umgama phakathi kwe-nozzle kunye ne-weldment kufuneka ibe yincinci kangangoko kunokwenzeka, kodwa incinci kakhulu ayinakulungele ukujonga i-pool etyhidiweyo. Ngoko ke, umgama phakathi kwe-nozzle kunye ne-weldment idla ngokuthathwa njenge-7mm ukuya kwi-15mm.

3. Ukwandisa ubude be-tungsten electrode
Ukuthintela i-arc ekutshiseni kunye nokutshisa i-nozzle, i-tip ye-electrode ye-tungsten kufuneka iqhele ukudlulela ngaphaya kombhobho. Umgama osuka kwincam ye-electrode ye-tungsten ukuya kwisiphelo sombhobho wobude bokwandiswa kwe-electrode ye-tungsten. Ubuncinci ubude bokwandiswa kwe-electrode ye-tungsten, ngokusondeleyo umgama phakathi kwe-nozzle kunye ne-workpiece, kwaye ngcono umphumo wokukhusela. Nangona kunjalo, ukuba incinci kakhulu, iya kuthintela ukubonwa kwedama elityhidiweyo.
Ngokuqhelekileyo, xa udibanisa i-butt joints, kungcono ukuba i-electrode ye-tungsten yandise ubude be-5mm ukuya kwi-6mm; Xa i-welding fillet welds, kungcono ukuba ne-tungsten electrode yokwandisa ubude be-7mm ukuya kwi-8mm.

4. Indlela yokukhusela igesi kunye nesantya sokuhamba
Ukongeza ekusebenziseni imilomo yesetyhula ukukhusela indawo yokuwelda, ukuwelda kwegesi ye-tungsten engasebenziyo kunokwenza umbhobho ube mcaba (njengesikhewu esimxinwa se-tungsten yegesi ye-inert) okanye ezinye iimilo ngokwendawo yokuwelda. Xa udibanisa i-weld seam yeengcambu, i-weld seam yangasemva ye-weld part iya kungcoliswa kwaye ifakwe i-oxidized emoyeni, ngoko kufuneka kusetyenziswe ukhuseleko lokunyuka kwamaxabiso.

I-Argon kunye ne-helium zezona gesi zikhuselekileyo zokufakela umva ngexesha le-welding yazo zonke izinto. Kwaye initrogen yeyona gas ikhuselekileyo yokhuseleko lokunyuka kwamaxabiso ngasemva xa welding steel stainless and copper alloys. Uluhlu lwezinga lokuhamba kwegesi lokukhusela i-inflation back of inflation gas jikelele yi-0.5-42L / min.

I-airflow ekhuselayo ibuthathaka kwaye ayisebenzi, kwaye ixhomekeke kwiziphene ezifana ne-porosity kunye ne-oxidation ye-welds; Ukuba izinga lokuhamba komoya likhulu kakhulu, kulula ukuvelisa i-turbulence, umphumo wokukhusela awulungile, kwaye uya kuchaphazela ukutsha okuzinzileyo kwe-arc.

Xa ufaka izixhobo zombhobho, iindawo ezifanelekileyo zegesi kufuneka zishiywe ukukhusela uxinzelelo olugqithiseleyo lwegesi ngaphakathi kwimibhobho ngexesha le-welding. Ngaphambi kokuphela kwengcambu ye-weld bead welding, kuyimfuneko ukuqinisekisa ukuba uxinzelelo lwegesi ngaphakathi kombhobho aluphezulu kakhulu, ukuze kuthintelwe i-pool ye-welding ukuba ikhuphe okanye ingcambu ingabikho. Xa usebenzisa i-argon gas ekukhuseleni ngasemva kwezixhobo zombhobho ngexesha le-welding, kukulungele ukungena ukusuka ezantsi, ukuvumela umoya ukuba ukhululwe phezulu kwaye ugcine i-gas outlet kude ne-weld seam.