Gusudira ibyuma bitagira umwanda bisaba guhitamo gaze ikingira kugirango ibungabunge ibyuma byayo hamwe nibikoresho bifitanye isano nu mubiri ndetse nubukanishi.Ibintu bisanzwe bikingira gaze ibyuma bitagira umwanda birimo argon, helium, ogisijeni, dioxyde de carbone, azote, na hydrogène (reba Ishusho 1) .Iyi myuka ihujwe mubice bitandukanye kugirango ihuze ibyifuzo byuburyo butandukanye bwo gutanga, ubwoko bwinsinga, ibishushanyo mbonera.
Bitewe nubushyuhe buke bwumuriro wibyuma bidafite ingese hamwe nuburyo bugereranywa nubukonje bwikwirakwizwa ryimyuka ya gaze ya gari ya moshi arc gusudira (GMAW), inzira isaba gaze "tri-mix" igizwe na 85% kugeza kuri 90% helium (He), kugeza kuri 10% Argon (Ar) na 2% kugeza 5% Dioxyde de Carbone (CO2) .Ibisanzwe hamwe na 2% ya helium iteza imbere arcing nyuma yumuzingi muto; iherekejwe nubushyuhe bwayo bwinshi, ikoreshwa rya Yongera ubwinshi bwamazi ya pisine yashongeshejwe. Ar igice cya Trimix gitanga uburyo rusange bwo gukingira ikiziba cyasudwe, mugihe CO2 ikora nkibintu bifatika kugirango ihagarike arc (reba Ishusho ya 2 kuburyo imyuka itandukanye ikingira bigira ingaruka kumasaro ya weld).
Imvange zimwe za ternary zirashobora gukoresha ogisijeni nka stabilisateur, mugihe izindi zikoresha imvange ya He / CO2 / N2 kugirango zigere ku ngaruka zimwe. Bamwe mu bagabuzi ba gazi bafite imvange ya gaze yihariye itanga inyungu zasezeranijwe.Abacuruzi nabo barasaba ko iyi mvange yubundi buryo bwo kohereza hamwe ningaruka zimwe.
Ikosa rikomeye abahinguzi bakora ni ukugerageza kumashanyarazi magufi ya GMAW idafite ibyuma hamwe nuruvange rwa gaze imwe (75 Ar / 25 CO2) nkicyuma cyoroheje, mubisanzwe kubera ko badashaka gucunga silinderi yinyongera. Uru ruvange rurimo karubone nyinshi.Mu byukuri, gaze iyo ari yo yose ikingira insinga ikomeye igomba kuba irimo 5% ya dioxyde de carbone. 0.03%) .Karubone ikabije muri gaze ikingira irashobora gukora karubide ya chromium, igabanya kurwanya ruswa hamwe nubukanishi.Ibikoresho birashobora kandi kugaragara hejuru yubudodo.
Nkibisobanuro kuruhande, mugihe uhitamo ibyuma byo kugabanya GMAW kumurongo 300 wibanze (308, 309, 316, 347), abayikora bagomba guhitamo icyiciro cya LSi. Abuzuza LSi bafite karuboni nkeya (0.02%) bityo rero birasabwa cyane cyane mugihe hari ibyago byo kwangirika kwimiterere yimiterere.
Ababikora bagomba kwitonda mugihe bakoresheje uburyo bwo guhererekanya imiyoboro ngufi.Ivanga ryuzuye rishobora kuvamo bitewe no kuzimya arc, bigatuma inzira iba munsi ya progaramu zingirakamaro.Mu bihe byinshi cyane, niba ibikoresho bishobora gushyigikira kwinjiza ubushyuhe bwayo (≥ 1/16 santimetero ni ibintu byoroheje cyane byasuditswe hakoreshejwe uburyo bwo gutera imiti ya pulse).
Ubu buryo bwo guhererekanya ubushyuhe bwinshi ntibisaba ko akingira gaze.Ku gusudira kwa spray yo gusudira ya serie 300 zivanze, ihitamo rusange ni 98% Ar na 2% ibintu bitera imbaraga nka CO2 cyangwa O2.Bimwe bivanze na gaze bishobora kuba birimo bike bya N2.N2 bifite ubushobozi buke bwa ionisation hamwe nubushuhe bwumuriro, buteza imbere gutembera vuba cyangwa gutezimbere neza; bigabanya kandi kugoreka.
Kuri pulsed spray transfert GMAW, 100% Ar irashobora kuba ihitamo ryemewe.Kuko umuyaga uhindagurika uhindura arc, gaze ntisaba buri gihe ibintu bikora.
Ikidendezi gishongeshejwe gahoro gahoro kuri ferritic stainless ibyuma na duplex stainless ibyuma (igipimo cya 50/50 cya ferrite na austenite) .Kuri aya mavuta, imvange ya gaze nka ~ 70% Ar / ~ 30% He / 2% CO2 izamura amazi meza kandi yongere umuvuduko wurugendo (reba ishusho ya 3). 2% CO2 cyangwa O2 birahagije kugirango wongere ibirimo oxyde, bityo abayikora bagomba kubyirinda cyangwa kwitegura kumara umwanya munini kuri bo). Gukuraho kuko iyi oxyde irakomeye kuburyo guswera insinga mubisanzwe bitazayikuraho).
Ababikora bakoresha insinga zicyuma zitagira umuyonga kugirango basudire hanze kuko sisitemu ya slag muri izi nsinga itanga "akazu" gashyigikira pisine yo gusudira nkuko ikomera.Kuko ibice bigize flux bigabanya ingaruka za CO2, insinga zicyuma zitagira umuyonga zagenewe gukoreshwa hamwe na 75% Ar / 25% CO2 hamwe na / cyangwa 100% birakwiye ko tumenya ko umuvuduko mwinshi wo gusudira hamwe nigipimo cyo kubitsa bishobora kugabanya ibiciro byo gusudira muri rusange. Byongeye kandi, flux-cored wire ikoresha isanzwe ihoraho ya voltage DC isohoka, bigatuma sisitemu yibanze yo gusudira idahenze kandi itoroshye kuruta sisitemu ya GMAW.
Kuri 300 na 400 zivanze, 100% Ar ikomeje guhitamo uburyo bwo gusudira gas tungsten arc gusudira (GTAW) .Mu gihe cya GTAW ya nikel zimwe na zimwe za nikel, cyane cyane hamwe na mashini zikoresha imashini, hydrogène nkeya (kugeza 5%) irashobora kongerwaho kugirango umuvuduko wurugendo (menya ko bitandukanye nibyuma bya karubone, amavuta ya nikel adakunda guturika hydrogene).
Kuri gusudira superduplex na superduplex ibyuma bitagira umuyonga, 98% Ar / 2% N2 na 98% Ar / 3% N2 ni amahitamo meza, kimwe.Helium irashobora kandi kongerwamo imbaraga kugirango habeho ubushuhe bugera kuri 30% .Iyo gusudira super duplex cyangwa super duplex ibyuma bitagira umwanda, intego ni ugukora hamwe na microstructure ya 50% ya ferrost hamwe na 50% ya ferrosten hamwe na 50% ferrostite. igipimo cyo gukonjesha, kandi kubera ko TIG weld pisine ikonje vuba, ferrite irenze iguma mugihe 100% Ar ikoreshwa.Iyo hakoreshejwe imvange ya gaze irimo N2, N2 ikangura muri pisine yashongeshejwe kandi itera austenite.
Ibyuma bidafite ingese bigomba kurinda impande zombi zifatanije kugirango bitange isuderi yarangiye irwanya ruswa nyinshi. Kunanirwa kurinda inyuma bishobora kuvamo "isakaramentu," cyangwa okiside nini ishobora gutuma abadandaza bananirwa.
Ibikoresho bifatika bifatanye neza kandi byuzuye neza inyuma yinyuma yabyo ntibishobora gusaba gaze yingoboka.Dore hano, ikibazo nyamukuru nukwirinda ibara ryinshi rya zone yibasiwe nubushyuhe bitewe no kwiyongera kwa okiside, hanyuma bigasaba kuvanaho imashini.Ikoranabuhanga, niba ubushyuhe bwinyuma burenze dogere 500 Fahrenheit, birasabwa ko hajyaho uburyo bwa 300. munsi ya 30 PPM O2.Ibidasanzwe nimba inyuma yinyuma izasunikwa, hasi hamwe no gusudira kugirango igere kumurongo wuzuye.
Imyuka ibiri ishyigikira guhitamo ni N2 (ihendutse) na Ar (ihenze cyane) .Ku nteko nto cyangwa iyo Ar isoko iboneka byoroshye, birashobora kuba byiza gukoresha iyi gaze kandi idakwiye kuzigama N2. Hashobora kugera kuri 5% hydrogène irashobora kongerwaho kugirango igabanye okiside.
Kwiyongera kwa 10.5% cyangwa birenga bya chromium nibyo biha ibyuma bitagira umwanda ibintu byayo bitagira umwanda.Gukomeza iyi mitungo bisaba tekinike nziza muguhitamo neza gusudira gasi ikingira no kurinda inyuma yinyuma. Icyuma kitagira umwanda kirahenze, kandi hariho impamvu zifatika zo kugikoresha.Nta mpamvu yo kugerageza guca inguni mugihe cyo gukingira gaze hamwe no guhitamo ibyuma byuzuza ibi. kuzuza ibyuma byinzobere mugihe uhisemo gaze nicyuma cyuzuza ibyuma bidafite ingese.
Komeza ugendane namakuru agezweho, ibyabaye nubuhanga ku byuma byose uhereye mu binyamakuru byacu bibiri bya buri kwezi byanditswe gusa kubakora muri Kanada!
Noneho hamwe nuburyo bwuzuye bwo gusohora ibyuma bya Digital Metalworking yo muri Kanada, byoroshye kubona umutungo winganda zingirakamaro.
Noneho hamwe nuburyo bwuzuye bwo gusohora digitale ya Made in Canada na Welding, byoroshye kubona umutungo winganda zingirakamaro.