Kutheni le nto i-single-pass stainless steel welds isebenzisa i-FCAW isoloko isilela ukuhlolwa? UDavid Meyer noRob Koltz bajongisisa izizathu zezi ntsilelo
Umbuzo: Silungisa i-welded steel scrapers kwi-dryer system kwindawo emanzi.I-welds yethu ayiphumelelanga ukuhlolwa ngenxa ye-porosity, i-undercuts kunye ne-welds eqhekekileyo.Sidibanisa i-A514 ukuya kwi-A36 usebenzisa i-0.045 "i-diameter, yonke indawo, i-cored 309L, i-75% ye-Argon yokuxhatshazwa kwe-Carbon / 25%.
Sazama i-carbon steel electrodes, kodwa i-welds yaphela ngokukhawuleza kwaye safumana isinyithi esingenasici ukwenza ngcono.Zonke ii-welds zenziwa kwindawo ethe tyaba kwaye ziyi-3/8 "ubude.
I-Undercut idla ngokwenzeka ngenxa yemilinganiselo yewelding engafanelekanga, ubuchule bokuwelda obungafanelekanga, okanye zombini.
Ekubeni i-welder izama ukufaka i-3/8 ".Ithuba lokugqithisa itotshi linokuba noxanduva lwe-single-pass fillet welding kunye ne-diameter encinci flux-coreed wire.Nangona kunjalo, kubonakala ngathi usebenzisa isixhobo esingalunganga emsebenzini kunomcimbi wobugcisa, yiyo loo nto.
I-Porosity ibangelwa ukungcola kwi-weld, ilahleko okanye ukugqithisa kwegesi yokukhusela, okanye ukufunxa ngokugqithisileyo komswakama we-flux-core wire.Ukhankanya ukuba lo ngumsebenzi wokulungisa kwimidiya emanzi ngaphakathi kwesomisi, ngoko ke ukuba i-welds ayicocwanga ngokucokisekileyo, le nto ingaba yimbangela ephambili ye-voids.
I-metal filler oyisebenzisayo yonke indawo ye-flux cored wire, ezi ntlobo zocingo zinenkqubo ye-slag yokukhenkceza ngokukhawuleza.Oku kuyimfuneko ukuxhasa i-puddle weld xa udibanisa ngokuthe nkqo phezulu okanye ngaphezulu.Ukungalungi kwe-slag yokukhenkceza ngokukhawuleza kukuba iqina ngaphambi kokuba i-weld pool iphantsi kwayo.Ukuba iigesi zisakhutshwa, zivame ukuba zibe yifom ye-worms kwisithuba se-flatified kwaye sivele emva kokuvela kwi-pogns. ngocingo oluncinci oluncinci kwaye uzama ukufaka i-weld enkulu kwipasi enye, njengakwisicelo sakho.
Ukuqhekeka kwe-weld ekuqaleni kunye nokuyeka kwe-weld kunokubangelwa ezininzi izizathu.Njengoko ubeka i-bead enkulu kunye nocingo oluncinci lwe-diameter, kunokwenzeka ukuba ufumane i-fusion eyaneleyo (LOF) kwingcambu ye-weld.Weld cracking yinto eqhelekileyo ngenxa yoxinzelelo oluphezulu lwe-weld kunye ne-LOF kwingcambu.
Kulo bukhulu becingo, kufuneka usebenzise ezimbini okanye ezintathu zokupasa ukugqiba i-3/8 ye-intshi.I-Fillet welds, akukho namnye.Ungayifumana ngokukhawuleza ukwenza i-welds ezintathu ezingenasiphako kunokwenza i-weld enye enesiphako kwaye kufuneka uyilungise.
Nangona kunjalo, omnye umba onokudlala indima enkulu ekuqhekekeni kwe-weld yinqanaba elingalunganga le-ferrite kwi-weld, edla ngokuba yimbangela ephambili yokuqhekeka.309L ucingo lwaphuhliswa ukuwelda insimbi engenasici kwi-carbon steel kunokuba i-carbon steel ukuya kwi-carbon steel. iimali ezamkelekileyo ze-ferrite.Ukusebenzisa isinyithi sokuzalisa malunga ne-50% ye-ferrite, efana ne-312 okanye i-2209, iya kuphelisa ukukwazi ukuqhekeka ngenxa yomxholo we-ferrite ophantsi.
Eyona ndlela ilungileyo yokubonelela ukuxhathisa okugqwesileyo kukudibanisa i-joint nge-carbon standard okanye i-electrode yensimbi engenasici kwaye wongeze umaleko we-electrode engaphezulu.Nangona kunjalo, ukhankanye ukuba ubuphantsi kwemithintelo yexesha elixinana kakhulu kwaye nayiphi na imeko ye-welding ye-multi-pass yayingaphandle kombuzo.
Zama ukuguqula intambo enkulu ye-diameter, efana ne-1/16 intshi okanye enkulu.Ukusebenzisa i-gas-shielded flux-coreed wire ilungile kuba ibonelela ngokucocwa kwe-weld engcono kunye nokhuseleko olungcono lokuhamba komoya kunocingo olungaguquguqukiyo.Nangona kunjalo, endaweni yocingo olunendawo yonke, kuphela i-flat and horizontal position wire inokunciphisa i-worm3 okanye i-metal porosity okanye i-3L kufuneka iguqule i-rosity ye-3 okanye i-metal. 2209.
I-WELDER, eyayisakuba yi-Practical Welding Today, ibonisa abantu bokwenene abenza iimveliso esizisebenzisayo nesisebenza ngazo yonke imihla.Eli phephancwadi liye lanceda abantu baseMntla Merika iminyaka engaphezu kwama-20.
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