Sanin muhimman abubuwa game da na'urorin lantarki masu ƙarancin hydrogen E7018 na iya taimakawa wajen fahimtar yadda ake haɓaka aikinsu, aikinsu da kuma walda da za su iya samarwa.
Walda sanda ta kasance muhimmiyar hanya ga ayyukan walda da yawa, a wani ɓangare saboda kayan da ake amfani da su a aikace-aikace da yawa suna ci gaba da ba da gudummawa ga aikin, kuma wannan shine abin da masu aikin walda da yawa suka sani sosai. Idan ana maganar walda sanda, American Welding Society (AWS; Miami, FL) E7018 stick electrodes zaɓi ne gama gari saboda suna ba da halayen injiniya da sinadarai masu dacewa don aikace-aikace iri-iri, tare da ƙarancin matakan hydrogen don taimakawa hana fashewa da hydrogen ke haifarwa.
Sanin muhimman abubuwa game da na'urorin lantarki masu ƙarancin hydrogen na E7018 na iya taimakawa wajen fahimtar aikinsu, aikinsu, da kuma yadda walda ke fitowa. A matsayinka na doka, na'urorin lantarki masu ƙarancin hydrogen suna ba da ƙananan matakan splatter da kuma baka mai santsi, kwanciyar hankali, da shiru. Waɗannan halayen ƙarfe masu cikewa suna ba wa mai aikin walda kyakkyawan iko akan baka kuma suna rage buƙatar tsaftacewa bayan walda - duka mahimman abubuwa ne a aikace-aikacen da ke buƙatar kulawa sosai ga ingancin walda da shigarwar zafi, da kuma waɗanda ke kan wa'adin lokaci mai tsauri.
Waɗannan na'urorin lantarki suna ba da kyakkyawan ƙimar ajiya da kuma shigar da kyau, wanda ke nufin masu aikin walda za su iya ƙara ƙarin ƙarfe a cikin haɗin gwiwa a cikin wani lokaci fiye da sauran na'urorin lantarki masu sanda (kamar E6010 ko E6011), kuma har yanzu suna iya guje wa lahani na walda kamar rashin haɗuwa. Ƙara abubuwa kamar foda na ƙarfe, manganese, da silicon zuwa waɗannan na'urorin lantarki yana ba da fa'idodi daban-daban, gami da (amma ba'a iyakance ga) ikon walda cikin nasara ta wasu datti, tarkace, ko sikelin niƙa.
Kyakkyawan farawa da sake kunnawa na baka, wanda ke taimakawa wajen kawar da matsaloli kamar porosity a farkon walda, ƙarin fa'ida ne na electrodes ɗin sanda na E7018. Don sake kunnawa mai kyau (fara sake kunna baka), ya zama dole a fara cire ma'ajiyar silicon da ke samuwa a ƙarshen electrode. Duk da haka, yana da mahimmanci a tabbatar da duk buƙatun kafin walda, tunda wasu lambobi ko hanyoyin ba sa ba da damar iyakance electrodes ɗin sanda.
Kamar yadda aka lura a cikin rarrabuwar su ta AWS, na'urorin lantarki na sandar E7018 suna ba da aƙalla ƙarfin tensile na psi 70,000 (wanda aka ƙayyade ta "70") kuma ana iya amfani da su a duk wuraren walda (wanda aka ƙayyade ta "1"). "8" yana nufin rufin ƙarancin hydrogen, da kuma matsakaicin shigar lantarki da lantarki ke bayarwa da nau'ikan yanzu da yake buƙata don aiki. Tare da daidaitaccen rarrabuwar AWS, na'urorin lantarki na sandar E7018 na iya samun ƙarin masu ƙira kamar "H4" da "H8" waɗanda ke nufin adadin hydrogen mai yaɗuwa da aka tara a cikin walda. Misali, ƙirar H4 tana nuna cewa wurin walda yana da 4 ml ko ƙasa da haka na hydrogen mai yaɗuwa a kowace 100 g na ƙarfe na walda.
An yi gwaje-gwaje na musamman ga na'urorin lantarki masu siffar "R" - kamar E7018 H4R - kuma masana'anta sun yi la'akari da cewa suna da juriya ga danshi. Domin samun wannan suna, dole ne samfurin ya tsayayya da danshi a cikin wani yanki bayan an fallasa shi ga zafin jiki na digiri 80 na F da kuma kashi 80 cikin 100 na ɗanɗano na tsawon awanni tara.
A ƙarshe, amfani da "-1" akan rarrabuwar lantarki ta sanda (misali E7018-1) yana nufin samfurin yana ba da ingantaccen ƙarfin tasiri don taimakawa wajen tsayayya da fashewa a cikin aikace-aikace masu mahimmanci ko a ƙananan zafin jiki.
Electrodes ɗin sandar E7018 marasa ƙarancin hydrogen na iya aiki tare da tushen wutar lantarki mai ɗorewa (CC) wanda ke samar da ko dai wutar lantarki mai canzawa (AC) ko wutar lantarki mai ɗorewa (DCEP). Karfe masu cika E7018 suna da ƙarin masu daidaita baka da/ko foda na ƙarfe a cikin murfin don taimakawa wajen kiyaye baka mai ɗorewa lokacin walda ta amfani da wutar AC. Babban fa'idar amfani da AC tare da electrodes na E7018 shine kawar da bugun baka, wanda zai iya faruwa lokacin walda DC ta amfani da ƙasa mara kyau ko lokacin walda sassan maganadisu. Duk da samun ƙarin masu daidaita baka, walda da aka yi ta amfani da AC bazai yi santsi kamar waɗanda aka yi da DC ba, duk da haka, saboda ci gaba da canje-canje a cikin alkiblar halin yanzu wanda ke faruwa har sau 120 a cikin daƙiƙa.
Lokacin walda da wutar DCEP, waɗannan electrodes ɗin na iya samar da sauƙin sarrafa baka da kuma bead ɗin walda mai kyau, tunda alkiblar kwararar wutar tana nan daram. Don samun sakamako mafi kyau, bi shawarwarin masana'anta don sigogin aiki don diamita na electrode.
Kamar kowace hanya da lantarki, hanya mai kyau ta walda sanda da na'urorin lantarki na E7018 yana da mahimmanci don tabbatar da ingancin walda mai kyau. Riƙe tsayin baka mai tsauri - mafi kyau a ajiye na'urar lantarki a saman kududdufin walda - don kiyaye baka mai ƙarfi da rage damar samun porosity.
Lokacin walda a wurare masu faɗi da kwance, a ja electrode daga digiri 5 zuwa digiri 15 daga alkiblar tafiya don taimakawa wajen rage damar kama slag a cikin walda. Lokacin walda a matsayi a tsaye, a tura electrode zuwa digiri 3 zuwa digiri 5 yayin tafiya sama, kuma a yi amfani da wata dabara ta sakawa kaɗan don taimakawa hana walda yin lanƙwasa. Faɗin bead ɗin walda yawanci ya kamata ya zama ninki biyu da rabi na diamita na wayar tsakiyar electrode don walda mai faɗi da kwance, da kuma ninki biyu da rabi zuwa uku na diamita na tsakiya don walda mai tsayi.
Electrodes ɗin sanda na E7018 galibi ana aika su daga masana'anta a cikin fakitin da aka rufe da ruwa don kare su daga lalacewar danshi da kuma ɗauka. Yana da mahimmanci a ajiye wannan fakitin a wuri mai tsabta da bushewa har sai kayayyakin sun shirya don amfani. Da zarar an buɗe, ya kamata a sarrafa electrodes ɗin sandar da safar hannu masu tsabta da busassu don hana datti da tarkace mannewa ga rufin da kuma kawar da damar ɗaukar danshi. Hakanan ya kamata a riƙe electrodes ɗin a cikin tanda a yanayin zafi da masana'anta suka ba da shawarar bayan an buɗe su.
Wasu lambobi suna ƙayyade tsawon lokacin da na'urorin lantarki na sanda za su iya kasancewa a wajen marufi ko tanda mai ajiya, kuma idan ko sau nawa za a iya gyara ƙarfen cika (watau ta hanyar yin burodi na musamman don cire danshi da ya sha) kafin a jefar da su. Koyaushe a tuntuɓi takamaiman bayanai da lambobin da suka dace don buƙatun kowane aiki.
Lokacin Saƙo: Disamba-23-2022