Kuziva zvekutanga nezve maelectrode eE7018 ane hydrogen stick less kunogona kubatsira mukunzwisisa mashandiro awo, mashandiro awo uye welds dzavanogona kugadzira.
Kubatanidza tsvimbo kuchiri chinhu chakakosha pamabasa akawanda ekubatanidza, chimwe chikonzero ndechekuti zvinhu zvinoshandiswa mumabasa mazhinji zvinoramba zvichibatsira pakuita basa iri, uye ndicho chimwe chinhu chinozivikanwa nevakawanda vanosanganisa tambo. Kana zvasvika pakubatanidza tsvimbo, American Welding Society (AWS; Miami, FL) E7018 stick electrodes isarudzo yakajairika nekuti inopa hunhu hwakakodzera hwemakanika uye makemikari kune akasiyana mashandisirwo, pamwe chete nehuwandu hwakaderera hwehydrogen kubatsira kudzivirira kutsemuka kunokonzerwa nehydrogen.
Kuziva zvekutanga nezve maelectrode eE7018 ane hydrogen stick electrodes shoma kunogona kubatsira mukunzwisisa mashandiro awo, mashandiro awo, uye ma welds anobuda. Kazhinji, ma electrode eE7018 ane stick electrodes anopa mazinga akaderera ekupararira uye arc yakatsetseka, yakagadzikana, uye yakanyarara. Hunhu uhwu hwesimbi yekuzadza hunoita kuti welding operator ive nesimba rakanaka pamusoro pe arc uye hunoderedza kudiwa kwekucheneswa mushure mekuweld - zvese zvinhu zvakakosha mukushandiswa zvinoda kunyatsotarisirwa kune mhando ye weld uye kupisa, uye izvo zviri panguva yakatarwa.
Maelectrode aya anopa mwero wakanaka wekuisa zvinhu uye kupinda zvakanaka, zvinoreva kuti vanoisa zvinhu zvekubatanidza vanogona kuwedzera simbi yakawanda mujoini munguva yakatarwa kupfuura mamwe maelectrode akawanda anonamira (akadai seE6010 kana E6011), uye vanogona kudzivirira zvikanganiso zvekubatanidza zvakaita sekushaya fusion. Kuwedzerwa kwezvinhu zvakaita sehupfu hwesimbi, manganese, uye silicon kumaelectrode aya kunopa mabhenefiti akasiyana, anosanganisira (asi kwete kugumira pa) kugona kusanganisa zvinobudirira nevhu, marara, kana chigayo.
Kutanga nekudzoreredza arc zvakanaka, izvo zvinobatsira kubvisa matambudziko akadai sema porosity pakutanga kwe weld, ndeimwe yebatsiro ye E7018 stick electrodes. Kuti udzorere zvakanaka (kutanga arc zvakare), zvakakosha kutanga wabvisa silicon deposit inoumbwa pamagumo e electrode. Zvisinei, zvakakosha kuti uongorore zvese zvinodiwa usati wabatanidza, sezvo mamwe ma code kana maitiro asingabvumidze kudzoreredzwa kwema stick electrodes.
Sezvakaratidzwa muchikamu chavo cheAWS, maelectrode eE7018 stick anopa simba rekudhonza repsi 70,000 (rinotsanangurwa ne "70") uye anogona kushandiswa munzvimbo dzese dzekusveta (rinotsanangurwa ne "1"). Iyo "8" inoreva hydrogen coating yakaderera, pamwe nekupinda kwepakati kunopihwa neelectrode uye mhando dzazvino dzinodiwa kuti ishande. Pamwe chete nechikamu cheAWS chakajairwa, maelectrode eE7018 stick anogona kuve nezvimwe zviratidzo zvakaita se "H4" uye "H8" zvinoreva huwandu hwehydrogen inopararira inoiswa musimbi yekuzadza mu weld. Semuenzaniso, chiratidzo cheH4 chinoratidza kuti weld deposit ine 4 ml kana pasi pehydrogen inopararira pa 100 g yesimbi yeweld.
Maerekitirodhi ane chiratidzo che "R" — akadai seE7018 H4R — akaedzwa zvakasiyana uye akanzi haapindi hunyoro nemugadziri. Kuti awane chiratidzo ichi, chigadzirwa chinofanira kuramba hunyoro mukati mehuwandu hwakatarwa mushure mekuiswa patembiricha ye80 deg F uye 80 muzana hunyoro kwemaawa mapfumbamwe.
Chekupedzisira, kushandiswa kwe "-1" pakupatsanurwa kwe stick electrode (semuenzaniso E7018-1) zvinoreva kuti chigadzirwa chinopa kusimba kwakawedzerwa kwesimba rekubatsira kudzivirira kutsemuka mukushandiswa kwakakosha kana patembiricha yakaderera.
Maelectrode eE7018 ane hydrogen stick stick anogona kushanda nesimba risingaperi (CC) rinopa alternating current (AC) kana direct current electrode positive (DCEP). E7018 filler metals dzine mamwe arc stabilizers uye/kana iron powder mu coating kuti zvibatsire kuchengetedza arc yakagadzikana pakusveta uchishandisa AC current. Chinhu chikuru chekushandisa AC nemaelectrode eE7018 kubvisa arc blow, iyo inogona kuitika kana DC welding uchishandisa grounding isina kunaka kana pakusveta zvikamu zvine magnetized. Kunyangwe paine mamwe arc stabilizers, welds dzinogadzirwa uchishandisa AC dzinogona kunge dzisiri dzakapfava sedzakagadzirwa neDC, zvisinei, nekuda kwekuchinja kuri kuitika munzira yemagetsi kunoitika kusvika ka120 pasekondi.
Pakusonwa neDCEP current, maerekitirodhi aya anogona kupa kudzora kuri nyore kwearc uye weld bead inoyevedza, sezvo mafambiro emvura aripo asingachinji. Kuti uwane mhedzisiro yakanaka, tevera mazano emugadziri ekushandisa maparamita e electrode.
Kufanana nechero nzira uye electrode, nzira chaiyo yekushongedza matanda uchishandisa ma electrode eE7018 stick yakakosha kuti uve nechokwadi chekuti weld yakanaka. Bata arc stretch yakasimba - zviri nani kuchengetedza electrode iri pamusoro pemvura ye weld - kuchengetedza arc yakagadzikana uye kuderedza mukana wekuti porosity isashande.
Pakusonera munzvimbo dzakatsetseka nedzakatambarara, dhonza/dhonza electrode 5 deg kusvika 15 deg kubva parwendo kuti uderedze mukana wekubata tsvina mu weld. Pakusonera munzvimbo yakatsetseka-kumusoro, dhonza/sundira electrode kumusoro 3 deg kusvika 5 deg uchifamba uchienda kumusoro, uye shandisa nzira yekuruka zvishoma kudzivirira weld kuti isatsvedze. Upamhi hwe weld hunofanirwa kuve hwakapetwa kaviri nehafu kupfuura dhayamita ye core wire ye electrode kune flat uye horizontal welds, uye kaviri nehafu kusvika katatu kupfuura core dhayamita ye vertical-up welds.
Maelectrode eE7018 anonamirwa anowanzo tumirwa kubva kumugadziri mupakeji yakavharwa zvakanaka kuti adzivirirwe kubva mukukuvadzwa nehunyoro uye kutorwa. Zvakakosha kuchengetedza pakeji iyoyo isina kukuvadzwa uye kuchengetwa munzvimbo yakachena, yakaoma kusvika zvigadzirwa zvagadzirira kushandiswa. Kana zvangovhurwa, maelectrode estick anofanira kubatwa nemagirovhosi akachena, akaoma kudzivirira tsvina nemarara kuti zvisabatire pajira uye kubvisa mukana wekutorwa kwehunyoro. Maelectrode acho anofanirawo kuchengetwa muovheni patembiricha inokurudzirwa nemugadziri mushure mekuvhurwa.
Mamwe makodhi anorayira kuti maelectrode anonamira anogona kugara kwenguva yakareba sei kunze kwepakeji yakavharwa kana ovheni yekuchengetera uye kana simbi yekuzadza inogona kugadziriswazve kangani (kureva kuburikidza nekubikira kwakakosha kubvisa hunyoro hwakanyungudutswa) isati yaraswa. Nguva dzose tarisa zvirevo nemakodhi zvinoshanda kune zvinodiwa nebasa rega rega.
Nguva yekutumira: Zvita-23-2022