Yuav ua li cas weld stainless hlau xaim nrog argon arc vuam tshuab
Nws yog feem ntau qhia vuam (MMA), nrog los ntawm txhais tau tias nws yog xim hlau inert roj vuam (MIG / MAG) thiab tungsten inert roj vuam (TIG).
1. Npaj ua ntej tshaj vuam
Thaum cov tuab tuab tsawg dua 4 hli, tsis muaj qhov xav kom qhib qhov sib txawv, qhov txuas ncaj qha vuam, pom ib zaug ib zaug nkag. Taub taub welds nrog tuab ntawm plaub rau 6 hli tuaj yeem txuas rau ntawm txhua qhov nrawm ntxiv rau kev so. Feem ntau, V lossis u, X-puab zawj yuav tsum ua thaum lub taub loj tshaj 6 hli. Thib ob: degreasing thiab descaling ntawm weldment thiab muab tub lim hlau. Yuav kom ua tiav qee qhov vuam zoo.
2.Welding tsis
Xws li vuam tam sim no, tungsten electrode txoj kab uas hla, arc ntev, arc voltage, vuam nrawm, tiv thaiv cov roj av txaus, tsis muaj qhov ntev, thiab lwm yam.
(1) Vuam niaj hnub yog qhov tseem ceeb rau kev txiav txim siab weld txoj kev ua. Nws yog feem ntau txiav txim siab nrog kev pab ntawm cov khoom, tuab thiab zawj qauv ntawm qhov txuas. (2) Qhov txoj kab uas hla ntawm cov electrode cia siab rau ntawm qhov vuam tam sim no. Qhov loj dua tam sim no lub hnub yog, qhov loj diam yog. (3) arc loj npaum li cas los ntawm 0.5 txog peb mm, thiab qhov sib phim arc voltage yog yim ~ 10 v. (4) Vuam ceev: qhov tam sim no, qhov kev cuam tshuam ntawm cov khoom siv weldment, vuam txoj haujlwm thiab hom kev ua haujlwm yuav tsum tau saib thaum xaiv.
① Kev tuav vuam (MMA)
Kev tuav vuam yog ib qho yooj yim heev thiab yooj yim siv vuam txoj kev. Qhov luaj li cas ntawm arc raug kho los ntawm tib neeg txhais tes, uas cia siab rau ntawm qhov ntsuas ntawm lub qhov ntawm qhov electrode thiab qhov haujlwm tawm. Ntawm lub sijhawm sib npaug, thaum siv los ua cov khoom siv arc, cov electrode ntxiv cov khoom sib dhos weld. Cov txheej txheem vuam no yog qhov yooj yim heev thiab tuaj yeem siv tau los txuas weld ze txhua yam khoom siv. Rau kev tawm ntawm qhov rooj siv, nws muaj qhov tseeb yoog raws, txawm hais tias siv nyob hauv qab dej tsis muaj teeb meem. Hauv electrode vuam, qhov luaj li cas ntawm arc tso rau ntawm txhais tes: thaum koj sib pauv qhov ntawm qhov electrode thiab qhov khoom ua haujlwm, koj ntxiv ntxiv qhov luaj li cas ntawm arc.
Feem ntau, tam sim no ncaj qha siv hauv kev vuam, thiab cov electrode siv raws li txhua tus muab kev pabcuam arc thiab weld muab tub lim. Lub tshuab hluav taws xob yog ua ntawm cov xaim lossis tsis yog hlau tooj hlau tub ntxhais hlau thiab cov txheej electrode. Qhov xim txheej no tiv thaiv lub weld los ntawm huab cua thiab tswj lub arc. Nws ntxiv rau kev ua kom zoo ntawm cov txheej slag thiab tiv thaiv lub weld los ntawm kev sib sau. Lub tshuab hluav taws xob tuaj yeem yog ob qho titanium electrode lossis alkaline electrode, uas cia siab rau qhov tuab thiab txheej ntawm txheej txheej. Lub vauj vuam electrode yog qhov ua kom yooj yim kom tshem tau ntawm titanium slag. Yog tias cov electrode tau txais kev cawm ntev ntev, nws yuav tsum tau rov ci, vim qhov tseeb noo noo los ntawm huab cua yuav nrawm hauv cov electrode.
Vuam lwm yam thiab kev ceev faj ntawm cov hlau stainless flux cored hlau
(1) Lub vuam tshuab hluav taws xob siv hluav taws xob siv, thiab thim rov qab polarity yog siv hauv DC vuam. Cov nquag CO2 vuam ntsuas vuam siv tau siv rau kev vuam, txawm li cas los xij qhov kev ntxhov siab ntawm cov xov hlau pub lub log yuav tsum tau kho me ntsis.
(2) Qhov kev tiv thaiv roj av tiv thaiv ib txwm muaj roj carbon dioxide, thiab lub roj av ntab yog 20 ~ 25L / min.
(3) Qhov kev ncua deb ntawm vuam nozzle thiab workpiece xav tau yog 15 ~ 25 hli.
(4) Qhuav ncua ntev: feem ntau, lub vuam txiav-ntug hauv qab 250A yog li 15 hli, thiab vuam txiav-ntug saum toj 250A yog li 20 ~ 25 hli.
MIG / MAG vuam
Qhov no yog ib qho roj hluav taws xob tsis muaj roj tsis tiv thaiv arc vuam txoj kev. Nyob rau hauv hom no, arc yog rhuab stably ntawm niaj hnub tus neeg muab khoom hlau thiab cov haujlwm ua haujlwm hauv qab kev tiv thaiv kev tiv thaiv roj, thiab cov hlau xaim despatched los ntawm kev siv lub laptop tau siv raws li vuam pas nrig kom mos hauv qab nws tus kheej arc. Vim tias qhov kev tshaj lij thiab qhov tshwj xeeb ntawm MIG / MAG vuam txoj kev, nws yog txawm li cas los xij yog cov txheej txheem feem ntau siv vuam ntau hauv ntiaj teb, uas tsim nyog rau cov hlau tsis muaj hlau, tsis muaj steel, tsis tshua muaj hlau thiab ntau alloy ua raws cov khoom. Qhov no ua rau nws txoj kev txuas hlau txuas zoo tshaj plaws rau kev tsim khoom thiab kho. Thaum vuam hlau, MAG tuaj yeem ua tau raws li qhov xav tau ntawm 0.6 hli tuab daim ntawv steel. Cov roj siv hluav taws xob tiv thaiv nyob sab xis ntawm no yog cov roj siv hluav taws xob zoo, xws li carbon dioxide los yog cov roj sib xyaw ua ke.
Qhov tseem ceeb yam tseem ceeb thiab kev ceev faj ntawm stainless hlau MIG vuam
(1) Lub vuam tiaj lub zog siv ua kev saws, thiab thim rov qab polarity yog tau txais thaum DC siv (daim hlau vuam muaj feem xyuam nrog tus ncej loj).
(2) Feem ntau, cov argon ntshiab (kev coj dawb huv yog 99.99 %) lossis Ar + 2 % O2 siv, thiab kev mus nrog tus nqi ntws yog 20 ~ 25L / min.
(3) Arc ntev: MIG vuam ntawm cov hlau tsis muaj hlau yog ib txwm nqa tawm hauv qab qhov xwm txheej ntawm txau hloov, thiab qhov voltage yuav tsum tau kho rau arc loj ntawm plaub ~ 6mm.
(4) windproof: MIG vuam yog qhov yooj yim kom tau cuam tshuam los ntawm cov cua, txij ua ke ntev mus ntawm cua yuav tsim tawm lub qhov hws, yog li cov ntsuas cua yuav tsum tau ua rau qhov chaw ntawm cov cua nrawm tshaj 0.5mc.
(5) noo pov thawj: rau lub sijhawm ntawm qhov tawm ntawm lub qhov rooj vuam, qhov chaw ua haujlwm yuav tsum muab cov ntaub ntawv pov tseg los ntawm ya raws los khaws qhov kev tiv thaiv ntawm cov roj.
