Vuam ceev tsis yooj yim rau loosen, tab sis tseem muaj qee yam uas yuav tsum tau them sai sai rau thaum siv txhawm rau txhawm rau txuas cov welding ceev. Vuam yog txheej txheem ntawm kev sib txuas ob qhov sib cais rau hauv ib chav tsev, melting cov hlau ntawm qhov kub thiab txias thiab sib tov ua ntej txias. Lub hauv paus yog ntim nrog hlau, thiab lub zog sab hauv yog vim muaj zog molecular, uas yog me ntsis ntau dua li cov matrix li niaj zaus. Yog li ntawd, daim ntawv thov ntawm vuam ceev yog dav heev.
1. Xaiv cov khoom siv hluav taws xob nrog cov yam ntxwv ncaj nraim, thiab siv qhov zoo polarity (vuam hlau txuas nrog qhov tsis zoo polarity) rau DC.
2. Feem ntau haum rau vuam nyias daim hlau hauv qab 6 hli, nws muaj cov yam ntxwv ntawm cov vuam zoo nkauj thiab me me vuam deformation.
3. Khaws cov roj li argon nrog purity ntawm 99.99%. Thaum lub vuam tam sim no yog 50-150A, argon ntws tus nqi yog 8-10L / min, thiab thaum tam sim no yog 150-250A, argon ntws tus nqi yog 12-15L / min.
4. Qhov ntev zoo rau tungsten electrodes los ntawm cov roj nozzles yog 4-5mm. Hauv cov cheeb tsam uas muaj kev tiv thaiv tsis zoo xws li kaum vuam, nws yog 2-3mm, thiab nyob rau hauv cov cheeb tsam nrog cov grooves sib sib zog nqus, nws yog 5-6mm. Qhov kev ncua deb ntawm lub nozzle mus rau txoj hauj lwm yog feem ntau tsis ntau tshaj 15mm.
5. Txhawm rau kom tsis txhob muaj qhov tshwm sim ntawm vuam qhov pores, muaj xeb, roj stains, thiab lwm yam ntawm qhov vuam yuav tsum tau ntxuav kom huv si.
6. Thaum vuam cov hlau zoo tib yam, nws yog qhov zoo tshaj plaws los siv lub vuam arc ntev ntawm 2-4 hli, thaum welding stainless hlau, nws yog qhov zoo tshaj plaws los siv lub vuam arc ntev ntawm 1-3 hli. Yog tias nws ntev dhau lawm, kev saib xyuas kev ua haujlwm yuav tsis zoo.
7. Txhawm rau tswj lub vuam pas dej kom zoo nrog cov roj argon thiab ua kom yooj yim rau kev ua haujlwm vuam, qhov nruab nrab ntawm cov tungsten electrode feem ntau yuav tsum tuav lub kaum sab xis ntawm 80-85 degree nrog lub workpiece ntawm qhov vuam taw tes, thiab lub kaum sab xis ntawm qhov muab tub lim. xaim thiab sab nrauv ntawm lub workpiece yuav tsum me me li sai tau, feem ntau nyob ib ncig ntawm 10 degree.
8. Txhawm rau tswj lub vuam pas dej kom zoo nrog cov roj argon thiab ua kom yooj yim rau kev ua haujlwm vuam, qhov nruab nrab ntawm tungsten electrode feem ntau yuav tsum tuav lub kaum sab xis ntawm 80-85 degree nrog rau qhov chaw ua haujlwm ntawm qhov vuam taw tes, thiab lub kaum sab xis ntawm qhov muab tub lim. xaim thiab sab nrauv ntawm lub workpiece yuav tsum me me li sai tau, feem ntau nyob ib ncig ntawm 10 degree.
9. Windproof thiab qhov cua. Hauv cov cheeb tsam uas muaj cua daj cua dub, nws raug nquahu kom siv txoj kev thaiv cov nets, thaum nyob hauv cov chaw sab hauv, yuav tsum tau siv txoj kev ua pa kom tsim nyog.
