Gas Hlau Arc Vuam (GMAW): Qhov "Kev Xaiv Zoo Tshaj" rau Cov Vuam Zoo
Gas Hlau Arc Vuam (GMAW): Qhov "Kev Xaiv Zoo Tshaj" rau Cov Vuam Zoo
Gas hlau arc vuam (GMAW) siv cov roj inert los yog cov roj nquag ua cov nruab nrab tiv thaiv kom cais tawm qhov cuam tshuam ntawm huab cua ntawm lub pas dej molten. Nws nta zoo vuam zoo thiab zoo nkauj weld tsim. Nws tau muab faib ua ob hom: tungsten inert gas welding (TIG) thiab CO₂ gas shielded welding (MIG / MAG), uas tsim nyog rau cov khoom sib txawv thiab cov xwm txheej, raws li.
1. Tungsten Inert Gas Vuam (TIG Vuam): Tus "Tsev Neeg" hauv Precision Vuam
TIG vuam siv cov roj argon (purity ≥99.99%) ua cov roj tiv thaiv. Nws heats lub workpiece los ntawm lub arc ntawm lub tungsten electrode thiab workpiece, thiab yuav ua tau nrog los yog tsis muab tub lim (autogenous vuam). Nws yog tsim rau precision vuam ntawm yooj yim oxidized cov ntaub ntawv xws li stainless hlau, aluminium alloys, thiab titanium alloys, xws li aerospace Cheebtsam, siab hlab ntsha, thiab cov khoom kho mob.
Cov ntsiab lus tseem ceeb ua haujlwm:
Kev Xaiv Tungsten Electrode: Siv cov khoom siv tungsten electrodes rau vuam stainless hlau thiab ntshiab tungsten electrodes rau vuam aluminium alloys. Kho lub tungsten electrode txoj kab uas hla raws li tam sim no (xws li, 2.4mm tungsten electrode rau 100-150A tam sim no). Tswj qhov ntev ntawm tungsten electrode ntawm 2-5mm kom tsis txhob muaj kev sib cuag nrog cov xaim xaim, uas yuav ua rau tungsten electrode burnout.
Gas Tswjhwm: Kho cov argon ntws raws li lub workpiece thickness: 8-10L / min rau nyias daim hlau (≤3mm) thiab 12-15L / min rau tuab daim hlau (> 5mm). Txuas lub sij hawm tiv thaiv argon los ntawm 3-5 vib nas this thaum txiav tawm lub arc los tiv thaiv qhov kub-kub oxidation ntawm vuam.
5mm). Txuas lub sij hawm tiv thaiv argon los ntawm 3-5 vib nas this thaum txiav tawm lub arc los tiv thaiv qhov kub-kub oxidation ntawm vuam.
Filler Wire Technique: Ntxiv cov xaim xaim los ntawm lub hauv ntej ntawm lub pas dej molten, tsis txhob sib cuag ncaj qha nrog lub arc. Tswj lub vuam ceev ntawm 5-10cm / min kom ntseeg tau tias tag nrho fusion ntawm lub pas dej molten thiab tsis txhob muaj fusion tsis xws luag.
2. CO₂ Gas Shielded Vuam (MIG/MAG Vuam): Tus "High-Efficiency Expert" rau Mass Production
CO₂ gas shielded welding siv CO₂ lossis cov roj sib xyaw ntawm CO₂ thiab argon ua qhov nruab nrab tiv thaiv, nrog kev pub mis tsis siv neeg. Nws muaj kev siv vuam zoo (2-3 npaug ntawm SMAW) thiab tus nqi qis, ua rau nws tsim nyog rau kev tsim cov hlau tsis muaj cov pa roj carbon tsawg thiab cov hlau tsis tshua muaj hlau, xws li lub cev tsheb, cov khoom siv hauv tsev, thiab cov thawv tsim khoom.
Cov ntsiab lus tseem ceeb ua haujlwm:
Parameter Matching: nruj me ntsis phim qhov tam sim no thiab voltage (piv txwv li, 22-24V rau 150A tam sim no). Tswj cov hlau txuas ntev ntawm 10-15mm (kwv yees li 5-10 npaug ntawm txoj kab uas hla); ib qho kev ncua ntev ntev yuav ua rau muaj kev sib tsoo ntau dhau, thaum lub sijhawm luv luv tuaj yeem hlawv lub nozzle.
Vuam lub kaum sab xis: Txais txoj kev vuam sab laug (tsiv lub vuam teeb ntawm sab xis mus rau sab laug). Tuav lub kaum sab xis ntawm 15-25 ° nruab nrab ntawm lub vuam teeb thiab cov khoom ua haujlwm kom ntseeg tau tias tag nrho cov kev pabcuam ntawm lub pas dej molten los ntawm cov roj. Siv cov ntaub thaiv npog cua thaum cua ceev tshaj 2m / s los tiv thaiv cov roj tiv thaiv kom tsis txhob ya mus, uas tuaj yeem ua rau porosity.
