Ukwazi izinto eziyisisekelo mayelana ne-E7018 low-hydrogen stick electrode kungaba usizo ekuqondeni indlela yokwandisa ukusebenza kwawo, ukusebenza kwawo kanye nama-welds angawakhiqiza.
I-Stick welding ihlala ingukhiye wemisebenzi eminingi yokushisela, ngokwengxenye ngenxa yokuthi izinto ezisetshenziswa ezinhlelweni eziningi ziyaqhubeka nokuboleka kule nqubo, futhi leyo abaningi abasebenzisa i-welding abayazi kahle.Uma kuziwa ekushiseleni okunamathelayo, i-American Welding Society (AWS; Miami, FL) E7018 stick electrode iyisinqumo esivamile ngoba inikeza izakhiwo ezifanele zemishini namakhemikhali ezinhlobonhlobo zezinhlelo zokusebenza, kanye namazinga aphansi e-hydrogen ukusiza ukuvimbela ukuqhekeka okubangelwa i-hydrogen. .
Ukwazi okuyisisekelo mayelana nama-electrode e-low-hydrogen stick e-E7018 kungaba usizo ekuqondeni ukusebenza kwawo, ukusebenza kwawo, kanye nokushisela kwawo.Njengomthetho ojwayelekile, ama-electrode enduku ye-E7018 anikezela ngamazinga aphansi we-spatter kanye ne-arc ebushelelezi, ezinzile, nethule.Lezi zici zensimbi zokugcwalisa zinikeza opharetha abashiselayo ukulawula okuhle phezu kwe-arc futhi zinciphise isidingo sokuhlanza ngemva kokushisela - zombili izici ezibalulekile ezisetshenziswayo ezidinga ukunakwa ngokucophelela kwikhwalithi yokushisela nokokufaka ukushisa, kanye nalezo ezinezinsuku zokugcina eziqinile.
Lawa ma-electrode anikeza amazinga amahle okufakwa kanye nokungena okuhle, okusho ukuthi ama-opharetha abashiselayo angakwazi ukwengeza insimbi yokushisela ejoyintini ngesikhathi esinikeziwe kunamanye ama-electrode enduku amaningi (afana ne-E6010 noma i-E6011), futhi asengagwema amaphutha okushisela njengokuntuleka kokuhlanganisa. .Ukwengezwa kwama-elementi afana ne-iron powder, i-manganese, ne-silicon kulawa ma-electrode kunikeza izinzuzo ezihlukile, okuhlanganisa (kodwa kungagcini lapho) amandla okushisela ngempumelelo ngokungcola okuthile, udoti, noma isikali sokugaya.
I-arc enhle iqala futhi iqala kabusha, okusiza ukuqeda izinkinga ezifana ne-porosity ekuqaleni kokushisela, kuyinzuzo eyengeziwe ye-E7018 stick electrode.Ukuze uthole ukuvinjelwa okuhle (ukuqala i-arc futhi), kuyadingeka ukuthi uqale ususe idiphozi ye-silicon eyenza ekugcineni kwe-electrode.Kubalulekile, nokho, ukuqinisekisa zonke izidingo ngaphambi kokushisela, njengoba amanye amakhodi noma izinqubo azikuvumeli ukukhawulelwa kwama-electrode enduku.
Njengoba kuphawuliwe ekuhlukaniseni kwabo kwe-AWS, ama-electrode enduku ye-E7018 anikeza ubuncane bamandla e-psi angama-70,000 (aqokwe ngo-“70”) futhi angasetshenziswa kuzo zonke izikhundla zokushisela (ezikhethwe ngu-“1”).I-"8" ibhekisela ekugqokeni okuphansi kwe-hydrogen, kanye nokungena okuphakathi kwe-electrode ehlinzekayo kanye nezinhlobo zamanje ezidinga ukusebenza.Ngokuhambisana nokuhlukaniswa okujwayelekile kwe-AWS, ama-electrode enduku ye-E7018 angaba nabaklami abengeziwe njenge-“H4” kanye ne-“H8” ebhekisela enanini le-hydrogen ehlukanisekayo idiphozi yensimbi yokugcwalisa endaweni yokushisela.Igama elithi H4, isibonelo, libonisa ukuthi idiphozi ye-weld ino-4 ml noma ngaphansi kwe-hydrogen ehlakazekayo nge-100 g yensimbi yokushisela.
Ama-Electrode ane-designator ethi “R” - efana ne-E7018 H4R - ahlolwe okuthile futhi athathwe ngumenzi amelana nomswakama.Ukuze uthole lokhu kuqokwa, umkhiqizo kufanele umelane nomswakama ngaphakathi kwebanga elinikeziwe ngemva kokuchayeka kumazinga okushisa angu-80 deg F kanye namaphesenti angu-80 womswakama ohlobene amahora ayisishiyagalolunye.
Okokugcina, ukusetshenziswa kuka-“-1” ekuhlukaniseni i-electrode yenduku (isb. E7018-1) kusho ukuthi umkhiqizo unikeza ukuqina komthelela okuthuthukisiwe ukusiza ukumelana nokuqhekeka ezintweni ezibucayi noma emazingeni okushisa aphansi.
I-E7018 low-hydrogen stick electrode ingasebenza ngomthombo wamandla wamanje (CC) ongashintshi ohlinzeka nge-alternating current (AC) noma i-electrode yamanje eqondile positive (DCEP).Izinsimbi zokugcwalisa ze-E7018 zinezinza ezingeziwe ze-arc kanye/noma impushana yensimbi enamathelayo ukusiza ukugcina i-arc ezinzile lapho kushiselwa kusetshenziswa i-AC yamanje.Inzuzo eyinhloko yokusebenzisa i-AC ene-E7018 electrode ukuqedwa kwe-arc blow, okungenzeka lapho i-DC welding isebenzisa isisekelo esingaphansi esingcono kakhulu noma lapho sishisela izingxenye ezizibuthe.Naphezu kokuba nama-arc stabilizer engeziwe, ama-welds enziwe kusetshenziswa i-AC angase angabi bushelelezi njengalawo enziwe nge-DC, nokho, ngenxa yezinguquko eziqhubekayo endleleni yamanje ezenzeka izikhathi ezifika ku-120 ngomzuzwana.
Lapho i-welding nge-DCEP yamanje, lawa ma-electrode anganikeza ukulawula okulula kwe-arc kanye ne-weld bead ekhangayo, njengoba isiqondiso sokugeleza kwamanje sihlala njalo.Ukuze uthole imiphumela engcono kakhulu, landela izincomo zomkhiqizi mayelana nemingcele yokusebenza yobubanzi be-electrode.
Njenganoma iyiphi inqubo kanye ne-electrode, indlela efanele uma i-stick welding nge-E7018 stick electrode ibalulekile ukuze kuqinisekiswe ikhwalithi enhle yokushisela.Bamba ubude obuqinile be-arc - ngokufanelekile ugcine i-electrode ingaphezu nje kwe-weld puddle - ukugcina i-arc ezinzile futhi unciphise ithuba le-porosity.
Uma ushisela endaweni eyisicaba futhi evundlile, khomba/hudula i-electrode engu-5 deg ukuya ku-15 deg kude nalapho uhamba khona ukuze usize ukunciphisa ithuba lokubamba i-slag endaweni yokushisela.Lapho ushisela umi mpo, khomba/phusha i-electrode iye phezulu ku-3 deg kuya ku-5 deg ngenkathi uhambela phezulu, futhi usebenzise indlela encane yokuluka ukuze usize ukuvimbela ukushisela ekuncipheni.Ububanzi be-weld bead ngokuvamile kufanele buphindwe kabili nengxenye ububanzi bentambo ye-electrode ewumgogodla wokushisela okuyisicaba noma okuvundlile, futhi kabili nengxenye ukuya kokuthathu kunobubanzi obuwumgogodla wokushisela okuqondile.
Ama-electrode anamathelayo e-E7018 ngokuvamile athunyelwa evela kumkhiqizi ngephakheji elivalwe kahle ukuze awavikele emonakalweni womswakama futhi acoshe.Kubalulekile ukugcina leyo phakheji iphelele futhi igcinwe endaweni ehlanzekile, eyomile kuze kube yilapho imikhiqizo isilungele ukusetshenziswa.Uma esevuliwe, ama-electrode enduku kufanele aphathwe ngamagilavu ahlanzekile, omile ukuze kuvinjelwe ukungcola nemfucumfucu ukuthi inganamatheli ekunambeni futhi kuqedwe ithuba lokuthatha umswakama.Ama-electrode nawo kufanele abanjelwe kuhhavini emazingeni okushisa anconywe umenzi ngemva kokuvulwa.
Amanye amakhodi anquma ukuthi ama-electrode enduku angaba isikhathi esingakanani ngaphandle kokupakishwa okuvalekile noma kuhhavini wokugcina nokuthi uma insimbi yokugcwalisa ingalungiswa kangaki (okungukuthi ngokubhaka okukhethekile ukuze kukhishwe umswakama omuncwayo) ngaphambi kokuthi ilahlwe.Hlala ubheka imininingwane esebenzayo kanye namakhodi ngezidingo zomsebenzi ngamunye.
Isikhathi sokuthumela: Dec-23-2022