Ukwazi izinto ezisisiseko malunga ne-E7018 i-electrodes ephantsi ye-hydrogen stick inokuba luncedo ekuqondeni indlela yokwandisa ukusebenza kwabo, ukusebenza kwabo kunye ne-welds abanokuvelisa.
I-Stick welding ihlala ingundoqo kwimisebenzi emininzi ye-welding, ngokuyinxenye ngenxa yokuba izinto ezisetyenziswa kwizicelo ezininzi ziqhubeka nokuziboleka kwinkqubo, kwaye enye ininzi yabaqhubi be-welding abayaziyo kakuhle.Xa kuziwa kwi-stick welding, i-American Welding Society (i-AWS; i-Miami, i-FL) i-E7018 i-electrode ye-stick yinto eqhelekileyo kuba ibonelela ngeempawu ezifanelekileyo zemishini kunye neekhemikhali kwiinkqubo ezahlukeneyo, kunye namanqanaba aphantsi e-hydrogen ukunceda ukukhusela i-hydrogen-induced cracking. .
Ukwazi izinto ezisisiseko malunga ne-E7018 i-electrodes ephantsi ye-hydrogen stick kunokuba luncedo ekuqondeni ukusebenza kwabo, ukusebenza, kunye ne-welds ezibangelwayo.Njengomthetho jikelele, i-E7018 i-electrode ye-stick inika amanqanaba asezantsi e-spatter kunye ne-arc egudileyo, ezinzileyo, kunye neyokuthula.Ezi mpawu zetsimbi zokugcwalisa zinika umqhubi we-welding ulawulo olulungileyo kwi-arc kunye nokunciphisa imfuno yokucoca emva kwe-weld - zombini izinto ezibalulekileyo kwizicelo ezifuna ukuqwalaselwa ngenyameko kumgangatho we-weld kunye negalelo lobushushu, kunye nalabo abakwimihla yokugqibela engqongqo.
Ezi electrode zibonelela ngamazinga afanelekileyo okubekwa kunye nokungena okulungileyo, okuthetha ukuba abaqhubi be-welding banokongeza intsimbi eyongezelelekileyo kwijoyinti ngexesha elinikiweyo kunezinye ezininzi ii-electrode zentonga (ezifana ne-E6010 okanye i-E6011), kwaye zisenakho ukuphepha iziphene ze-weld njengokungabikho kokudibanisa. .Ukongezwa kwezinto ezinje ngomgubo wentsimbi, imanganese, kunye nesilicon kwezi electrode zibonelela ngeengenelo ezahlukileyo, kubandakanywa (kodwa kungaphelelanga apho) ukukwazi ukudibanisa ngempumelelo ubumdaka obuthile, inkunkuma okanye isikali sokusila.
I-arc elungileyo iqala kwaye iqala kwakhona, enceda ukuphelisa imiba efana ne-porosity ekuqaleni kwe-weld, inzuzo eyongezelelweyo ye-E7018 stick electrodes.Ukuthintela okulungileyo (ukuqalisa i-arc kwakhona), kuyimfuneko ukuba uqale ukususa idiphozithi ye-silicon eyenza ekupheleni kwe-electrode.Kubalulekile, nangona kunjalo, ukuqinisekisa zonke iimfuno phambi kokuwelda, njengoko ezinye iikhowudi okanye iinkqubo zingakuvumeli ukucuthwa kwee-electrodes.
Njengoko kuphawuliwe kuhlelo lwabo lwe-AWS, i-electrode ye-E7018 inika ubuncinci be-70,000 yamandla e-psi tensile (etyunjwe ngu "70") kwaye ingasetyenziswa kuzo zonke izikhundla ze-welding (ekhethwe ngu "1")."I-8" ibhekisela kwi-low-hydrogen coating, kunye nokungena okuphakathi kwe-electrode enikezelayo kunye neentlobo zangoku ezifunekayo ekusebenzeni.Kunye nolwahlulo oluqhelekileyo lwe-AWS, i-E7018 i-electrode yentonga inokuba nabaqambi abongezelelweyo njenge "H4" kunye ne "H8" ebhekiselele kwisixa se-hydrogen edibeneyo yokugcwalisa idiphozithi yesinyithi kwi-weld.Ukutyunjwa kwe-H4, umzekelo, kubonisa idiphozithi ye-weld ine-4 ml okanye ngaphantsi kwe-hydrogen edibeneyo edibeneyo nge-100 g yentsimbi ye-weld.
I-Electrodes ene-designator "R" - efana ne-E7018 H4R - ifumene uvavanyo oluthile kwaye ithathwa njengokumelana nomswakama ngumenzi.Ukufumana olu bizo, imveliso kufuneka ixhathise ukufuma ngaphakathi koluhlu olunikiweyo emva kokuvezwa kubushushu be-80 deg F kunye neepesenti ezingama-80 zokufuma okuhambelana neeyure ezilithoba.
Okokugqibela, ukusetyenziswa kwe-“-1” kuhlelo lwe-electrode intonga (umz. E7018-1) kuthetha ukuba imveliso ibonelela ngobungqongqo obuphuculweyo bokunceda ukuxhathisa ukuqhekeka kwizicelo ezibalulekileyo okanye kumaqondo obushushu asezantsi.
I-E7018 i-electrode ye-hydrogen ye-low-hydrogen stick inokusebenza kunye nomthombo wamandla oqhubekayo (CC) obonelela nokuba yi-alternating current (AC) okanye i-electrode yangoku echanekileyo (DCEP).I-E7018 yesinyithi ye-filler ine-arc stabilizers eyongezelelweyo kunye / okanye i-iron powder kwi-coating ukunceda ukugcina i-arc ezinzileyo xa i-welding isebenzisa i-AC yangoku.Inzuzo ephambili yokusebenzisa i-AC nge-E7018 electrode kukupheliswa kwe-arc blow, enokuthi yenzeke xa i-DC welding isebenzisa isiseko esingaphantsi kune-ideal okanye xa i-welding ye-magnetized parts.Ngaphandle kokuba ne-arc stabilizers eyongezelelweyo, i-welds eyenziwe kusetyenziswa i-AC isenokungabi lula njengaleyo yenziwe nge-DC, nangona kunjalo, ngenxa yotshintsho oluqhubekayo kwindlela yangoku eyenzekayo ukuya kumaxesha angama-120 ngomzuzwana.
Xa i-welding kunye ne-DCEP yangoku, ezi electrode zinokubonelela ngokulula ukulawula i-arc kunye ne-weld bead ekhangayo ngakumbi, ekubeni isalathiso sokuhamba kwangoku sihlala sihlala.Ukufumana iziphumo ezilungileyo, landela iingcebiso zomenzi kwiiparamitha zokusebenza kwidayamitha ye-electrode.
Njengayo nayiphi na inkqubo kunye ne-electrode, ubuchule obufanelekileyo xa i-welding stick nge-E7018 stick electrode ibalulekile ukuqinisekisa umgangatho omhle we-weld.Bamba ubude obuqinileyo be-arc - ngokufanelekileyo ukugcina i-electrode ngaphezu kwe-puddle weld - ukugcina i-arc ezinzileyo kunye nokunciphisa ithuba le-porosity.
Xa udibanisa kwi-flat and horizontal positions, khomba / utsale i-electrode 5 deg ukuya kwi-15 deg kude nolwalathiso lokuhamba ukuze uncede ukunciphisa ithuba lokubambisa i-slag kwi-weld.Xa uwelda ukwindawo ethe nkqo, yalatha/yityhale i-electrode iye phezulu kwi-3 deg ukuya kwi-5 deg ngelixa usiya phezulu, kwaye usebenzise ubuchule bokuluka obuncinci ukunceda ukukhusela i-weld ekuweni.Ububanzi be-weld bead kufuneka buqhele ukuba buphindwe kabini kunye nesiqingatha ubukhulu bocingo olungundoqo lwe-electrode kwiiweld ezimcaba nezithe tye, kunye nesibini esinesiqingatha ukuya kathathu kumbindi wedayamitha yeeweldi ezithe nkqo.
I-E7018 intonga yee-electrode idla ngokuthunyelwa ngenqanawa isuka kumvelisi ngepakethe etywiniweyo ukuze ikhuseleke kumonakalo wokufuma kwaye ithathe.Kubalulekile ukuyigcina loo phakheji yomelele kwaye igcinwe kwindawo ecocekileyo, eyomileyo de iimveliso zilungele ukusetyenziswa.Nje ukuba zivulwe, i-electrode yentonga kufuneka iphathwe ngeeglavu ezicocekileyo, ezomileyo ukunqanda ubumdaka kunye nobutyobo ekubambeleleni elugqumeni kunye nokuphelisa ithuba lokuchola ukufuma.Ii-electrodes nazo kufuneka zigcinwe kwi-oven kumaqondo obushushu acetyiswa ngumenzi emva kokuvulwa.
Ezinye iikhowudi ziyalela ukuba i-electrode yentonga ingaba ixesha elingakanani ngaphandle kwepakethe etywiniweyo okanye kwi-oveni yokugcina kwaye ukuba okanye kangaphi na okanye kangakanani na intsimbi yokuzalisa inokulungiswa ngokutsha (okt ngokubhaka okukhethekileyo ukususa ukufuma okufunxayo) phambi kokuba ilahlwe.Soloko ujongana nemigaqo esebenzayo kunye neekhowudi kwiimfuno zomsebenzi ngamnye.
Ixesha lokuposa: Dec-23-2022