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Kev sib txuas zoo yog dab tsi?
Thaum DC arc vuam, cov vuam txuas txuas nrog qhov zoo ntawm cov khoom siv hluav taws xob ntawm lub tshuab vuam, vuam teeb (vuam pliers)
Txoj kev sib txuas ntawm qhov tsis zoo ntawm lub davhlau ya nyob twg tso zis yog hu ua "kev sib txuas zoo" thiab tseem hu ua qhov zoo polarity.
2. Txoj kev txuas rov qab yog dab tsi?
Thaum DC arc vuam, cov vuam txuas txuas nrog qhov tsis zoo ntawm cov khoom siv hluav taws xob ntawm lub tshuab vuam, vuam teeb (welding pliers)Txoj kev sib txuas ntawm qhov zoo ntawm lub davhlau ya nyob twg ntawm qhov tso zis yog hu ua "rov qab txuas txoj kev" thiab nws tseem hu ua thim rov qab polarity. Basic electrode(hluav taws xob 507, thiab lwm yam), carbon arc gouging, CO2 vuam yog thim rov qab.
3. Vim li cas DC TIG vuam theem ob qhov hluav taws xob txuas mus rau DC zoo txuas? Qhov kub twg yog qhov tsim nyog rau Yog qhov vuam ntawm cov ntaub ntawv?
Thaum DC txuas nrog, tungsten yog qhov tsis zoo, thaj chaw cathode emits electrons, kub qis, thiab tungsten tsawg heev.Tsis yooj yim rau hlawv, koj tuaj yeem siv lub vuam tam sim no loj dua. Haum rau vuam carbon steel, stainless hlau, tooj liab, titanium thiab refractory hlau molybdenum, tantalum, niobium, thiab lwm yam.
4. Vim li cas peb thiaj li yuav tsum tau siv AC TIG vuam rau vuam aluminium, magnesium thiab nws cov alloys?
Thaum DC thim rov qab, tungsten yog qhov zoo heev thiab ua kom muaj cations ntau dua nrog lub zog kinetic ntau dua.Cov oxide zaj duab xis tawm tsam qhov chaw ntawm txhuas, magnesium thiab nws cov alloys muaj cov nyhuv tu; tungsten yog qhov zoo heevNyob rau hauv cheeb tsam polar, qhov kub thiab txias yog heev, thiab tungsten yog heev puas thiab siv tsis tau nrog ib tug loj vuam tam sim no.Ib txwm vuam. Siv cov khoom siv hluav taws xob hloov hluav taws xob hloov hluav taws xob, cua sov lub workpiece hauv qhov zoo ib nrab nthwv dej, tsis zoo ib nrab nthwv dej tuCov oxide zaj duab xis paub qhov zoo vuam ntawm txhuas, magnesium thiab nws cov alloys.
5. Dab tsi yog qhov pib tam sim no (initial current)?
A: Nyob rau hauv lub xeev "nrhiav" ntawm lub arc, nias qhov tam sim no ntawm vuam torch pib lub arc; loosen lub teeb kom qhib.
Tshem tawm qhov vuam tam sim no.
<1>Thaum TIG vuam, qhov pib tam sim no tsawg dua qhov vuam tam sim no rau preheating thiab coj cov arc.
Lub vuam hlau raug xa mus rau qhov chaw vuam, thiab lub teeb hluav taws xob raug tso tawm kom hloov mus rau qhov qub vuam.
<2>MIG vuam aluminium, qhov pib tam sim no ntau dua qhov vuam tam sim no 20-30A, txo qhov pib ntawm vuamTsis fused.
<3>MIG vuam ntawm stainless hlau thiab hlau, qhov pib tam sim no sib npaug rau qhov vuam tam sim no.
