Porosity shine rami da aka samu lokacin da kumfa a cikin narkakkar tafki suka kasa tserewa yayin ƙarfafawa yayin walda. Lokacin waldawa da J507 alkaline electrode, akwai mafi yawa nitrogen pores, hydrogen pores da CO pores. A lebur waldi matsayi yana da karin pores fiye da sauran matsayi; akwai ƙarin matakan tushe fiye da cikawa da rufe saman; akwai dogayen welding na baka fiye da gajerun walda; akwai abubuwan walda na baka masu katsewa fiye da ci gaba da walda; kuma akwai ƙarin farawar baka, rufewar baka da wuraren haɗin gwiwa fiye da walda. Akwai sauran mukamai da yawa don dinki. Kasancewar pores ba kawai zai rage girman walda ba kuma ya raunana tasiri mai tasiri na yanki na weld, amma kuma ya rage ƙarfin, filastik da taurin walda. Bisa ga halaye na droplet canja wuri na J507 waldi sanda, za mu zabi waldi ikon tushen, dace waldi halin yanzu, m baka farawa da kuma rufewa, short baka aiki, mikakke sanda sufuri da sauran al'amurran don sarrafawa, da kuma samun mai kyau ingancin tabbaci a waldi samar. .
1. Samuwar stomata
Karfe narkakkar yana narkar da iskar gas mai yawa a yanayin zafi. Yayin da zafin jiki ya ragu, waɗannan iskar gas a hankali suna tserewa daga walda a cikin nau'i na kumfa. Gas ɗin da ba shi da lokacin tserewa ya kasance a cikin walda kuma yana samar da pores. Gas ɗin da ke haifar da pores galibi sun haɗa da hydrogen da carbon monoxide. Daga rarraba stomata, akwai stomata guda ɗaya, ci gaba da stomata, da stomata mai yawa; daga wurin stomata, ana iya raba su zuwa stomata na waje da ciki; daga siffa, akwai pinholes, zagaye stomata, da tsiri stomata ( stomata su ne tsiri-tsutsa-dimbin yawa) , waɗanda suke ci gaba da zagaye pores), sarkar-kamar pores na saƙar zuma, da dai sauransu A yanzu, ya fi dacewa ga J507. na'urorin lantarki don samar da lahani a lokacin walda. Saboda haka, ɗaukar walda na ƙananan ƙarfe na carbon tare da lantarki J507 a matsayin misali, an yi wasu tattaunawa game da dangantaka tsakanin abubuwan da ke haifar da lahani da kuma tsarin walda.
2.Halayen J507 waldi sanda canja wurin droplet
J507 waldi sanda ne mai low-hydrogen waldi sanda tare da high alkalinity. Ana iya amfani da wannan sandar walda ta al'ada lokacin da injin walda na DC ya juyar da polarity. Sabili da haka, ko da wane nau'in na'urar walda na DC da aka yi amfani da shi, canjin droplet yana daga yankin anode zuwa yankin cathode. A cikin walƙiya ta hannu gabaɗaya, zazzabi na yankin cathode yana ɗan ƙasa kaɗan fiye da zazzabi na yankin anode. Sabili da haka, ko mene ne nau'in canjin yanayi, zafin jiki zai ragu bayan ɗigon ruwa ya isa yankin cathode, yana haifar da haɗuwa da ɗigon irin wannan nau'in lantarki da kuma canzawa zuwa cikin narkakkar tafki, wato, nau'in jujjuyawar ɗigon ruwa yana samuwa. . Duk da haka, saboda walda na hannun hannu wani abu ne na ɗan adam: kamar ƙwarewar walda, girman halin yanzu da ƙarfin lantarki, da dai sauransu, girman ɗigon ruwa shima bai yi daidai ba, girman narkakkar tafkin shima bai yi daidai ba. . Saboda haka, lahani irin su pores suna samuwa a ƙarƙashin rinjayar abubuwan waje da na ciki. A lokaci guda kuma, murfin lantarki na alkaline ya ƙunshi babban adadin fluorite, wanda ke lalata ions fluorine tare da babban ƙarfin ionization a ƙarƙashin aikin arc, yana sa kwanciyar hankali na arc ya fi muni kuma yana haifar da canja wurin droplet maras kyau a lokacin waldi. dalili. Sabili da haka, don magance matsalar porosity na J507 electrode manual baka waldi, ban da bushewa da lantarki da tsaftace tsagi, dole ne mu fara tare da matakan fasaha don tabbatar da kwanciyar hankali na arc droplet canja wuri.
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3. Zaɓi tushen wutar lantarki don tabbatar da bargawar baka
Tun da murfin lantarki na J507 ya ƙunshi fluoride tare da babban yuwuwar ionization, wanda ke haifar da rashin kwanciyar hankali a cikin iskar gas, ya zama dole don zaɓar tushen wutar lantarki mai dacewa. Abubuwan wutar lantarki na DC da muke amfani da su sun kasu zuwa nau'i biyu: na'ura mai jujjuya DC arc waldi da na'ura mai gyara silicon DC na'urar walda. Ko da yake su na waje halaye masu lankwasa duk suna saukowa halaye, saboda Rotary DC baka waldi inji cimma manufar gyara ta hanyar installing wani zaɓi commutating sandarka, da fitarwa na yanzu waveform swings a yau da kullum siffa, wanda shi ne daure zama wani macroscopic sabon abu. rated halin yanzu, microscopically, fitarwa na halin yanzu yana canzawa tare da ƙaramin girman girma, musamman lokacin da ɗigon ruwa ya canza, yana haifar da girman girman lilo. Silicon da aka gyara na'urorin walda na DC sun dogara da abubuwan silicon don gyarawa da tacewa. Ko da yake fitarwa na halin yanzu yana da kololuwa da kwaruruka, gabaɗaya yana da santsi, ko kuma akwai ɗan ƙarami sosai a cikin wani tsari, don haka ana iya la'akari da shi gabaɗaya. Sabili da haka, ba shi da tasiri ta hanyar sauyawar ɗigon ruwa, kuma canjin halin yanzu da ke haifar da sauyawar droplet ba shi da girma. A cikin aikin walda, an kammala cewa na'urar gyaran gyare-gyaren silicon tana da ƙananan yuwuwar pores fiye da na'urar walda ta rotary DC. Bayan nazarin sakamakon gwajin, an yi imanin cewa lokacin amfani da lantarki na J507 don waldawa, yakamata a zaɓi na'ura mai ƙarfi na siliki mai ɗorewa mai walƙiya tushen wutar lantarki, wanda zai iya tabbatar da kwanciyar hankali da kuma guje wa faruwar lahani na pore.
4. Zabi daidai waldi halin yanzu
Saboda J507 electrode waldi, lantarki kuma ya ƙunshi nau'i mai yawa na abubuwan haɗin gwal a cikin ginshiƙan weld ban da sutura don haɓaka ƙarfin haɗin gwiwa da kuma kawar da yiwuwar lahani na pore. Saboda amfani da mafi girma walda halin yanzu, narkakkar pool zama zurfi, da karfe dauki ne mai tsanani, da kuma gami abubuwa suna da tsanani ƙone. Saboda yanayin da ake ciki yana da girma sosai, ba shakka zafin juriya na cibiyar walda zai ƙaru sosai, kuma wutar lantarki za ta zama ja, wanda hakan zai haifar da kwayoyin halitta da ke cikin rufin lantarki don bazuwa da wuri kuma su zama pores; yayin da halin yanzu ya yi kadan. Gudun kyalkyali na narkakken tafkin yana da sauri da yawa, kuma iskar gas a cikin narkakken tafkin ba shi da lokacin tserewa, yana haifar da pores. Bugu da ƙari, ana amfani da polarity na DC na baya, kuma yawan zafin jiki na yankin cathode yana da ƙananan ƙananan. Ko da atom ɗin hydrogen da aka samar a lokacin tashin hankali sun narkar da su a cikin tafkin narkakkar, ba za a iya maye gurbinsu da sauri da abubuwan gami ba. Ko da iskar hydrogen ta yi saurin yawo daga cikin walda, narkar da tafkin ya yi zafi sosai sannan kuma ya yi sanyi da sauri, wanda hakan ya sa sauran kwayoyin halittar hydrogen su yi ƙarfi a cikin narkakken walda don haifar da lahani. Saboda haka, wajibi ne a yi la'akari da dacewa waldi halin yanzu. Sandunan walda maras-hydrogen gabaɗaya suna da ɗan ƙaramin tsari na yanzu na kusan 10 zuwa 20% fiye da sandunan walda na acid iri ɗaya. A cikin aikin samarwa, don ƙananan sandunan walda na hydrogen, murabba'in diamita na sandar walda wanda aka ninka ta goma ana iya amfani da shi azaman abin tunani na halin yanzu. Alal misali, ana iya saita wutar lantarki na Ф3.2mm a 90 ~ 100A, kuma za'a iya saita wutar lantarki na Ф4.0mm a 160 ~ 170A a matsayin halin yanzu, wanda za'a iya amfani dashi azaman tushen zabin sigogi na tsari ta hanyar gwaje-gwaje. Wannan zai iya rage ƙona asarar abubuwan gami da guje wa yiwuwar pores.
5. Madaidaicin baka farawa da rufewa
J507 electrode walda gidajen abinci sun fi iya samar da pores fiye da sauran sassa. Wannan shi ne saboda yawan zafin jiki na gidajen abinci sau da yawa yana ɗan ƙasa da sauran sassa yayin walda. Saboda maye gurbin sabon sandar walda ya haifar da ɓarkewar zafi na ɗan lokaci a wurin rufewar baka na asali, ana iya samun lalatawar gida a ƙarshen sabon sandar walda, wanda ke haifar da ɗimbin pores a haɗin gwiwa. Don magance lahani na pore da wannan ya haifar, ban da aikin farko Baya ga shigar da farantin faranti mai mahimmanci a ƙarshen farawa, a kowane haɗin gwiwa a tsakiyar, ɗauka da sauƙi shafa ƙarshen kowane sabon electrode akan baka. -farantin fara fara fara baka don cire tsatsa a ƙarshen. A kowane haɗin gwiwa a tsakiya, dole ne a yi amfani da hanyar ci gaba da bugun baka, wato, bayan an buga baka 10 zuwa 20 mm a gaban weld kuma ya tsaya tsayin daka, sannan a ja shi zuwa wurin rufewar baka. haɗin gwiwa domin ainihin wurin rufe baka na iya zama mai zafi a cikin gida har sai an samu narke. Bayan haɗawa, saukar da baka kuma juya shi sama da ƙasa sau 1-2 don walƙiya kullum. Lokacin rufe baka, ya kamata a ajiye baka a takaice kamar yadda zai yiwu don kare narkakkar tafkin daga cika ramin baka. Yi amfani da hasken baka ko jujjuya baya da baya sau 2-3 don cike ramin baka don kawar da ramukan da aka haifar a baka na rufewa.
6. Short arc aiki da linzamin kwamfuta motsi
Gabaɗaya, sandunan walda na J507 sun jaddada amfani da gajeriyar aikin baka. Manufar gajeren aikin arc shine don kare tafkin bayani don kada tafki mai zafi a cikin yanayin zafi mai zafi ya mamaye iska ta waje kuma ya haifar da pores. Amma a cikin wane yanayi ya kamata a kiyaye gajeriyar baka, muna tsammanin ya dogara da sandunan walda na ƙayyadaddun bayanai daban-daban. Yawanci gajeriyar baka tana nufin nisa inda ake sarrafa tsayin baka zuwa 2/3 na diamita na sandar walda. Saboda nisa ya yi ƙanƙanta, ba kawai za a iya ganin tafkin bayani a sarari ba, amma kuma yana da wahala a yi aiki kuma yana iya haifar da ɗan gajeren kewayawa da karyewar baka. Babu babba ko ƙasa da yawa ba zai iya cimma manufar kare tafkin mafita ba. Yana da kyawawa don ɗaukar raƙuman a cikin layi madaidaiciya lokacin da ake jigilar sassan. Juyawa da yawa baya da gaba zai haifar da kariya mara kyau na tafkin mafita. Don manyan kauri (yana nufin ≥16mm), buɗe U-dimbin yawa ko nau'ikan U-biyu za a iya amfani da su don magance matsalar. A lokacin waldawar murfin, ana iya amfani da walda mai yawa don rage kewayon lilo. Hanyoyin da ke sama ana amfani da su wajen samar da walda, wanda ba wai kawai yana tabbatar da inganci na zahiri ba har ma yana tabbatar da santsi da tsaftataccen beads.
Lokacin aiki J507 lantarki don waldawa, ban da matakan tsari na sama don hana yiwuwar pores, wasu buƙatun tsari na al'ada ba za a iya watsi da su ba. Misali: bushewar sandar walda don cire ruwa da mai, ƙayyadewa da sarrafa tsagi, da kuma matsayin ƙasa mai kyau don hana ɓarnawar baka daga haifar da pores, da dai sauransu Kawai ta hanyar sarrafa matakan tsari dangane da halaye na samfurin, za mu kasance. iya rage yadda ya kamata da kuma guje wa lahani mara kyau.
Lokacin aikawa: Nov-01-2023
