Cov pa roj carbon dioxide roj thaiv cov hlua yog ib txoj kev siv welding. Nws yog ib txoj hauv kev tiv thaiv los ntawm kev siv cov tshuaj sib xyaw ntawm 82% argon roj thiab 18% cov roj carbon dioxide ua ib lub roj shielding. Nws yog ib qho yooj yim rau kev khiav lag luam thiab tsim kom muaj kev ceev ntiag tug thiab txhua txoj kab kev lag luam hauv ntau txoj haujlwm. Thaum lub vuam tsoo, cov pa hluav taws ntws tawm, thiab txoj hauj lwm ntawm txoj hlua tuaj yeem ua pa tawm ntawm sab nraud. Txwv kev vam zoo. Haum rau kev ua haujlwm sab hauv tsev.
Cov pa roj carbon dioxide roj thaiv cov hlua fais fab (hu ua CO2 welding) siv cov roj carbon dioxide ua ib qhov roj av shielding.
Txoj kev ntawm qhov vuam. (Qee zaum ib cov roj tov ntawm CO2 + Ar siv). Yooj yim rau hauv daim ntawv thov, tsim rau kev siv welding thiab txhuam txhua yam. Nws muaj cov cua tsis muaj zog thaum lub vuam siv thiab tsim kom muaj chaw ua haujlwm sab hauv tsev. Vim nws cov nqi qis, cov roj carbon dioxide yog ib qho yooj yim tsim thiab siv dav hauv cov tuam txhab ntawm txhua qhov ntau thiab tsawg. Vim muaj kev tshwj xeeb ntawm lub thermal lub zog ntawm cov roj carbon dioxide, nws tsis tuaj yeem tsim ib txoj kab xev xaim pub dawb ntawm txoj hlab hlau thaum kawg ntawm cov xaim thaum siv lub tshuab fais fab. Feem ntau, yuav tsum tau luv luv thiab luv-xaim, thiab yog li ntawd, nrog MIG welding. Piv rau cov kev hloov dawb, muaj ntau ntau qhov sib txawv. Txawm li cas los xij, yog tias siv cov khib nyiab zoo, qhov kev xaiv tsis raug xaiv, thiab ib qho chaw ruaj khov heev yuav pab tau kom txo tau cov txaws. Vim cov nqi qis rau cov roj siv shielding, cov hlua khi zoo tsim los ntawm kev hloov luv luv, thiab siv ib lub xaim uas muaj deoxidizer muaj peev xwm tau txais kev sib zog ua ke uas tsis muaj teeb meem. Vim li no, txoj kev siv welding no yog ib qho tseem ceeb ntawm cov khoom siv ferrous.
Zoo Tshaj Plaws
1. Cov nqi ntawm cov cuab yeej tsawg tsawg. Tus nqi no tsuas yog 40 ~ 50% ntawm cov khoom siv foob pob zeb thiab cov electrode arc welding.
2. Muaj kev ua haujlwm siab. Nws cov khoom tsim tau yog 1 txog 4 npaug ntawm cov electrode arc vuam.
3. Yooj yim khiav lag luam. Lub nraub qaum tsis yog tas rau cov tuab tuab ntawm workpiece. Nws muaj peev xwm yuav welded nyob rau txhua txoj haujlwm thiab tuaj yeem ua rau welded cia.
4. Lub weld muaj kev sib zog ua haujlwm tsis zoo. Lub weld yog tsawg hauv hydrogen thiab muaj nitrogen tsawg dua.
5. Tsawg deformation tom qab welding. Qhov deformation deformation yog tsib txhiab, thiab qhov tsis sib haum yog tsuas yog peb txhiab leej.
6. Lub voos ntov yog me me. Thaum siv ultra-low carbon alloy wire lossis cov xaim cored hlau, los yog ntxiv Ar hauv CO2, welding spatter yuav txo.
