1.MIG Vuam
MIG yog ib txoj kev vuam uas npog cov vuam ib feem nrog cov roj inert kom stabilize lub arc thiab tiv thaiv kev hloov ntawm vuam zoo. Nws siv arc cua sov los yaj cov hlau hauv qhov vuam thiab pub cov vuam pas nrig los txuas cov vuam. Nws kuj yog feem ntau hu ua semi-automatic vuam, npog roj arc vuam lossis carbon dioxide arc vuam, thiab lwm yam.
(1) Siv lub taub me me vuam hlau thaum vuam nyias daim hlau; siv txoj kab uas hla loj vuam hlau thiab siab tam sim no vuam tshuab thaum vuam tuab daim hlau.
(2) Siv cov vuam hlau kom raug los vuam cov khoom ua haujlwm. Stainless hlau vuam hlau welds stainless hlau, txhuas vuam hlau welds txhuas, thiab hlau vuam hlau koom nrog hlau.
(3) Siv cov roj tiv thaiv kom raug. Cov pa roj carbon dioxide zoo heev rau vuam hlau, tab sis qhov kub thiab txias yuav siab dhau rau vuam nyias daim hlau. Kev sib xyaw ntawm 75% argon thiab 25% carbon dioxide yuav tsum tau siv los ua cov ntaub ntawv thinner. Rau vuam aluminium, tsuas yog argon roj siv tau. Kev sib xyaw ntawm 3 gases (helium + argon + carbon dioxide) kuj siv tau thaum vuam hlau.
(4) Txhawm rau ua tiav cov txiaj ntsig zoo tshaj plaws ntawm kev tswj cov hlaws vuam, cov vuam hlau yuav tsum tau khaws cia ncaj qha nrog kev sib txuas ntawm ntug ntawm lub pas dej molten.
(5) Sim ua kom cov phom vuam ncaj thaum vuam kom tsis txhob muaj teeb meem kev noj cov hlau. Thaum lub vuam ua haujlwm nyob rau hauv ib qho txawv txav ( ntsug welding, kab rov tav vuam welding, overhead welding), lub pas dej molten yuav tsum tau khaws cia me me kom ua tau zoo tswj cov hlaws weld, thiab qhov tsawg tshaj plaws txoj kab uas hla vuam hlau yuav tsum tau siv ntau li ntau tau.
(6) Xyuas kom tseeb tias qhov luaj li cas ntawm cov vuam hlau koj siv sib tw lub nozzle, liner, thiab tsav cov menyuam.
(7) Ntxuav cov welding rab phom liner thiab tsav cov menyuam tsis tu ncua kom cov phom vuam lub qhov ncauj tsis muaj spatter. Yog hais tias qhov vuam phom qhov ncauj yog clogged los yog hlau pub tsis du, hloov nws.
(8) Thaum lub vuam hlau tsis siv, khaws cia rau hauv qhov chaw huv si thiab qhuav kom tsis txhob muaj kab mob sib kis uas yuav cuam tshuam rau kev siv vuam.
2. TIG Welding
TIG, tseem hu ua tungsten inert gas welding, yog arc vuam txoj kev uas siv tsis-melting tungsten electrodes rau vuam. Thaum ua GTAW vuam, thaj chaw vuam yog tiv thaiv los ntawm cov pa phem hauv huab cua nrog cov roj tiv thaiv (cov pa roj tsis zoo xws li argon feem ntau siv), thiab cov hlau nplaum (cov hlau nplaum) feem ntau yog siv ua ke. Thaum lub sij hawm vuam, lub zog yog muab los ntawm ib qho hluav taws xob arc uas ua los ntawm cov roj ionized heev (piv txwv li, plasma) thiab hlau vapor raws li qhov tam sim no vuam fais fab.
(1) Tsim nyog rau nyias phaj vuam - cov txheej txheem vuam huv tuaj yeem ua tiav cov vuam zoo nkauj.
(2) Siv argon ua cov roj tiv thaiv thaum vuam hlau thiab txhuas.
(3) Siv DC zoo polarity (DCEN) rau vuam hlau thiab stainless hlau, thiab siv AC rau vuam txhuas.
(4) Cov txheej txheem rab phom ib txwm tau siv hauv TIG vuam.
(5) Vuam cov ntaub ntawv aluminium - ntshiab tungsten electrodes yuav tsum tau siv. Nyob rau hauv txoj kev no, tungsten tuaj yeem yooj yim tsim lub taub hau kheej kheej thaum AC vuam.
(6) Vuam hlau thiab stainless hlau - tungsten electrodes uas muaj 2% thorium yuav tsum tau siv. Lub tungsten electrode yuav tsum tau sharpened thaum lub sij hawm DC zoo vuam.
3. Kev tiv thaiv vuam
Resistance welding yog hais txog ib txoj hauv kev uas siv cov hluav taws xob tiv thaiv hluav taws xob los ntawm qhov tam sim no dhau los ntawm qhov vuam thiab qhov chaw sib cuag raws li qhov chaw tshav kub kub rau hauv zos cua sov lub vuam thiab siv lub siab tib lub sij hawm rau vuam. Thaum vuam, tsis tas yuav tsum tau muab tub lim hlau, kev tsim khoom siab, me me deformation ntawm vuam, thiab yooj yim automation. Muaj plaub txoj hauv kev tseem ceeb, uas yog qhov chaw vuam, seam vuam, projection vuam thiab taub qab vuam. Kev tiv thaiv vuam tsis haum rau vuam aluminium, tooj liab lossis tooj liab alloys, tab sis tsuas yog rau vuam hlau thiab stainless hlau.
(1) Yuav kom tau txais cov cua kub ntau dua (tam sim no cov zis), yuav tsum siv lub caj npab luv electrode.
(2) Yog tias nws yog lub tshuab vuam yam tsis muaj kev tswj xyuas qhov kub, qhov ntev ntawm lub caj npab electrode yuav tsum tau siv los tswj. Piv txwv li, ntev electrode caj npab yog siv thaum vuam nyias daim hlau uas yuav tsum tau kub tsawg.
(3) Nco ntsoov tias tsis muaj qhov sib txawv ntawm cov khoom siv vuam, txwv tsis pub cov vuam yuav cuam tshuam zoo heev.
(4) Khaws ob txhais caj npab electrode kom sib haum kom cov electrodes nyob rau hauv ib leeg. Kuj ua kom lub siab hloov kho kom haum, tsis txhob ntau dhau lossis tsawg dhau.
(5) Yog tias koj xav tau ib sab ntawm lub workpiece kom muaj qhov zoo nkauj tom qab vuam, koj tuaj yeem siv lub tshuab zom cov electrode sab.
(6) Ntxuav cov electrodes nquag, txwv tsis pub cov zis tam sim no yuav txo qis. Cov npog tiv thaiv tsim nyog yuav tsum tau hnav ntawm cov electrodes.
