Simbi isina kusimba haina kunetsa muchina, asi inoda kutarisisa kune zvakadzama kana welding.

Simbi isina kusimba haina kunetsa muchina, asi inoda kutarisisa kune zvakadzama kana welding.Iyo haibvise kupisa sesimbi yakapfava kana aruminiyamu uye inorasikirwa nekumwe kwekudzivirira kwayo kana ikapisa zvakanyanya.Maitiro akanakisa anobatsira kuchengetedza kusaonda kwayo.Mufananidzo: Miller Electric
Kudzivirirwa kwekuora kwesimbi isina tsvina kunoita kuti ive sarudzo inokwezva kune akawanda akakosha epombi maapplication, kusanganisira yakakwira kuchena chikafu uye chinwiwa, mishonga yemishonga, midziyo yekumanikidza uye petrochemicals.Nekudaro, chinhu ichi hachibvise kupisa senge simbi yakapfava kana aluminium, uye nzira dzisina kunaka dzewelding dzinogona kudzikisira kushomeka kwayo.Kuisa kupisa kwakanyanya uye kushandisa isiriyo yekuzadza simbi zvikonzero zviviri.
Kuomerera kune mamwe emhando yepamusoro yesimbi isina simbi yewelding maitiro anogona kubatsira kuvandudza mibairo uye kuona kuti iyo simbi inodzivirira ngura inochengetedzwa.Uye zvakare, kukwidziridza welding maitiro anogona kuwedzera chibereko pasina kupira mhando.
Kana welding simbi isina tsvina, kusarudzwa kwesimbi yekuzadza kwakakosha kudzora kabhoni yemukati.Iyo yekuzadza simbi inoshandiswa kupinza simbi isina tsvina pombi inofanirwa kuvandudza mashandiro ewelding uye kusangana nezvinodiwa zvekuita.
Tarisa "L" zita rekuzadza simbi senge ER308L sezvo vachipa yakaderera yakanyanya kabhoni yemukati iyo inobatsira kuchengetedza corrosion kuramba mune yakaderera kabhoni isimbi isina tsvina alloys.Welding yakaderera kabhoni zvinhu zvine standard filler simbi inowedzera kabhoni yemukati we weld uye nekudaro inowedzera njodzi yekuora.Dzivisa "H" masimbi ekuzadza sezvo ane yakakwira kabhoni yemukati uye akagadzirirwa maapplication anoda simba repamusoro pane tembiricha yakakwira.
Paunenge uchipinza simbi isina tsvina, zvakakoshawo kusarudza simbi yekuzadza iyo yakaderera mukutsvaga zvinhu (inozivikanwawo sejunk).Izvi zvinhu zvakasara kubva kumidziyo inoshandiswa kugadzira simbi yekuzadza uye inosanganisira antimony, arsenic, phosphorus uye sarufa.Vanogona kukanganisa zvakanyanya kusimba kwekuora kwezvinhu.
Nemhaka yokuti simbi isina tsvina inonyatsonzwa kupinza kupisa, kugadzirira pamwe chete uye kuungana kwakakodzera kunoita basa rinokosha mukugadzirisa kupisa kuchengetedza zvinhu zvenyama.Makapu pakati pezvikamu kana kusaenzana kwakaenzana kunoda kuti tochi igare munzvimbo imwechete kwenguva refu, uye simbi yakawanda yekuzadza inodiwa kuzadza iwo maburi.Izvi zvinokonzera kupisa kunowedzera munzvimbo yakakanganiswa, zvichiita kuti chikamu chacho chiwedzere.Kuisa kusina kunaka kunogonawo kuita kuti zvive zvakaoma kuvhara mapeji uye kuzadzisa kupinda kunodiwa kweweld.Takava nechokwadi chokuti zvikamu zvinouya pedyo nesimbi isina tsvina sezvinobvira.
Kuchena kwechinhu ichi kunokoshawo zvikuru.Kunyangwe iyo diki diki yekusvibisa kana tsvina mune weld inogona kutungamirira kune kukanganisa kunoderedza kusimba uye kusagadzikana kwekuora kwechigadzirwa chekupedzisira.Kuti uchenese simbi isati yaiswa, shandisa bhurasho rakakosha resimbi isina simbi isati yashandiswa kabhoni simbi kana aluminium.
Mune simbi dzisina tsvina, sensitization ndicho chikonzero chikuru chekurasikirwa kwekupokana kwekuora.Izvi zvinoitika kana tembiricha yewelding uye mwero wekutonhora uchichinja zvakanyanya, zvichikonzera shanduko mune microstructure yezvinhu.
Izvi zvokunze weld pamusoro Stainless simbi pombi akanga welded pamwe GMAW uye controlled simbi pfapfaidzo (RMD) uye mudzi weld haana backflushed uye akafanana chitarisiko uye unhu kuti GTAW backflush welding.
Chikamu chakakosha chekupokana kwekuora kwesimbi isina tsvina ndeye chromium oxide.Asi kana iyo kabhoni yemukati muweld yakawandisa, chromium carbides inoumbwa.Vanosunga chromium uye vanodzivirira kuumbwa kweiyo inodiwa chromium oxide, iyo inoita kuti simbi isina tsvina isarambe ichiita ngura.Pasina chromium oxide yakakwana, izvo zvinhu hazvizove nezvinoda zvivakwa uye ngura ichaitika.
Kudzivirirwa kwekunzwa kunouya pasi kune yekuzadza simbi kusarudzwa uye kutonga kwekupisa kwekuisa.Sezvambotaurwa, zvakakosha kuti usarudze simbi yekuzadza ine yakaderera kabhoni yemukati kana welding simbi isina tsvina.Nekudaro, kabhoni dzimwe nguva inodiwa kuti ipe simba kune mamwe maapplication.Kudzora kupisa kunonyanya kukosha kana yakaderera kabhoni filler masimbi asina kukodzera.
Deredza nguva iyo weld neHAZ iri pakupisa kwakanyanya, kazhinji 950 kusvika 1500 degrees Fahrenheit (500 kusvika 800 degrees Celsius).Iyo shoma nguva yaunoshandisa soldering mumhando iyi, iyo shoma kupisa kwauchagadzira.Gara uchitarisa uye tarisa tembiricha yeinterpass mune welding maitiro ari kushandiswa.
Imwe sarudzo ndeye kushandisa simbi yekuzadza ine alloying zvikamu zvakaita setitanium uye niobium kudzivirira kuumbwa kwechromium carbides.Nekuti izvi zvikamu zvinokanganisawo simba uye kuoma, aya masimbi ekuzadza haagone kushandiswa mune zvese zvinoshandiswa.
Root pass welding uchishandisa gasi tungsten arc welding (GTAW) inzira yechinyakare yekusonerera pombi dzesimbi isina tsvina.Izvi zvinowanzoda argon backflush kudzivirira oxidation pazasi pe weld.Nekudaro, kune simbi isina tsvina machubhu uye mapaipi, kushandiswa kwewaya welding maitiro kuri kuwedzera kuwanda.Muzviitiko izvi, zvakakosha kuti unzwisise kuti akasiyana sei ekudzivirira magasi anokanganisa kusimba kwekuora kwezvinhu.
Gas arc welding (GMAW) yesimbi isina tsvina inowanzoshandisa argon uye carbon dioxide, musanganiswa weargon uye oksijeni, kana musanganiswa wegasi matatu (helium, argon uye carbon dioxide).Kazhinji, masanganiswa aya anosanganisira argon kana helium ine isingasviki 5% carbon dioxide, sezvo carbon dioxide inogona kupinza carbon mubhavhu rakanyungudutswa uye kuwedzera njodzi yekunzwa.Pure argon haikurudzirwe kune GMAW Stainless simbi.
Cord waya yesimbi isina tsvina yakagadzirirwa kushandiswa nemusanganiswa wechinyakare we75% argon uye 25% carbon dioxide.Fluxes ine zvigadzirwa zvakagadzirirwa kudzivirira kusvibiswa kweweld nekabhoni kubva kune inodzivirira gasi.
Sezvo maitiro eGMAW akashanduka, vakaita kuti zvive nyore kupinza machubhu uye pombi dzesimbi isina tsvina.Nepo mamwe maapplication angave achiri kuda maitiro eGTAW, kufambiswa kwewaya kwepamberi kunogona kupa mhando yakafanana uye kugadzirwa kwepamusoro mune dzakawanda simbi isina tsvina.
ID Stainless simbi welds yakagadzirwa neGMAW RMD yakafanana mumhando uye chitarisiko kune inoenderana OD welds.
Root inopfuura uchishandisa yakagadziridzwa pfupi yedunhu GMAW maitiro senge Miller's inodzorwa simbi deposition (RMD) inobvisa backflushing mune mamwe austenitic Stainless simbi zvikumbiro.Iyo RMD midzi pass inogona kuteverwa ne pulsed GMAW kana flux-cored arc welding kuzadza nekuvhara iyo yekupfuura, sarudzo inochengetedza nguva nemari kana ichienzaniswa nebackflush GTAW, kunyanya pamapombi akakura.
RMD inoshandisa yakanyatsodzorwa ipfupi yedunhu simbi kutamisa kugadzira yakanyarara, yakagadzikana arc uye weld dziva.Izvi zvinoderedza mukana wekutonhora kwemakumbo kana kusa-fusion, kunoderedza spatter uye kunatsiridza pombi midzi yemhando.Kunyatsodzorwa kwesimbi kutamisa zvakare kunovimbisa yunifomu yekudonha uye kudzora kuri nyore kwedziva re weld, nekudaro kudzora kupinza kwekupisa uye kumhanya kwewelding.
Maitiro asiri echinyakare anogona kuvandudza kugadzirwa kwewelding.Welding kumhanya inogona kusiana kubva 6 kusvika 12 ipm kana uchishandisa RMD.Nekuti maitiro aya anonatsiridza mashandiro pasina kumwe kudziya kwechikamu, anobatsira kuchengetedza kuita uye kuomarara kuramba kwesimbi isina tsvina.Kuderedza kupinza kwekupisa kwemaitiro kunobatsirawo kudzora substrate deformation.
Iyi pulsed GMAW maitiro inopa mapfupi arc kureba, yakamanikana arc makoni, uye kushoma kupisa kwekuisa pane yakajairwa pulsed jet.Sezvo maitiro akavharwa, arc Drift uye kuchinjika kwechinhambwe kubva kumuromo kuenda kunzvimbo yebasa kunobviswa.Izvi zvinorerutsa kutonga kweweld pool zvese kana welding panzvimbo uye kana welding kunze kwenzvimbo yebasa.Chekupedzisira, musanganiswa we pulsed GMAW yekuzadza nekuvhara mapasi neRMD yemudzi pass inobvumira nzira dzewelding kuti dziitwe newaya imwe uye gasi rimwe chete, kuderedza maitiro ekuchinja nguva.
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