Ua Npuas Ncauj hauv Nut Spot Welding?

Cov npuas hauv cov ntsiab lus weld hauv cov txiv ntoo qhov chaw vuam tuaj yeem yog ib qho teeb meem uas cuam tshuam rau qhov zoo thiab kev ncaj ncees ntawm cov vuam. Cov npuas no, tseem hu ua porosity, tuaj yeem ua rau lub vuam tsis muaj zog thiab cuam tshuam nws qhov kev ua tau zoo. Hauv tsab xov xwm no, peb yuav tshawb txog cov laj thawj tseem ceeb tom qab tsim cov npuas hauv cov txiv ntoo qhov chaw vuam thiab sib tham txog cov kev daws teeb meem los txo qhov teeb meem no.

1. Cov kab mob:Lub xub ntiag ntawm cov kab mob xws li roj, xeb, lossis lwm yam khoom txawv teb chaws ntawm qhov chaw raug welded tuaj yeem ua rau muaj npuas. Cov kab mob no tuaj yeem vaporize thaum lub sijhawm vuam, tsim cov voids hauv qhov vuam.
2. Kev npaj tsis txaus:Kev tu tsis txaus lossis kev npaj ntawm qhov chaw yuav tsum tau welded tuaj yeem ua rau cov vuam tsis zoo. Kev tu kom zoo thiab tshem tawm cov oxide txheej yog qhov tseem ceeb rau kev ua tiav cov welds muaj zog thiab txhim khu kev qha.
3. Gas Trapped nyob rau hauv Threaded Qhov:Thaum welding ceev, lub qhov threaded tej zaum yuav ntxiab roj los yog cua. Cov pa roj no tso tawm thaum lub sijhawm vuam thiab tuaj yeem tsim cov npuas hauv qhov chaw vuam. Xyuas kom meej tias lub qhov threaded yog huv si thiab tsis muaj kev cuam tshuam yog qhov tseem ceeb heev.
4. Tsis txaus Shielding Gas:Hom thiab ntws tus nqi ntawm shielding roj ua lub luag haujlwm tseem ceeb hauv cov txheej txheem vuam. Tsis txaus shielding roj tuaj yeem tso cai rau cov pa cua nkag mus rau thaj tsam weld, ua rau porosity.
5. Vuam Parameters:Kev siv cov vuam tsis zoo, xws li cov cua sov ntau dhau los yog cov vuam vuam tam sim no, tuaj yeem ua rau muaj npuas. Cov kev ntsuas no tuaj yeem ua rau cov hlau dhau los thiab vaporize, ua rau porosity.

Kev daws:

1. Kev tu kom huv:Xyuas kom meej tias qhov chaw yuav tsum tau welded yog huv si thiab tsis muaj kab mob. Qhov no tuaj yeem suav nrog kev siv cov kuab tshuaj, txhuam hlau, lossis lwm txoj hauv kev tu.
2. Proper Shielding Gas:Xaiv qhov tsim nyog shielding gas rau cov khoom siv welded thiab xyuas kom meej qhov txaus tus nqi yog kho kom raug kom muaj kev tiv thaiv huab cua.
3. Optimized Vuam Parameters:Kho cov vuam tsis sib xws kom haum rau cov khoom tshwj xeeb thiab tuab yog welded. Qhov no suav nrog cov vuam tam sim no, qhov hluav taws xob, thiab kev mus ncig ceev.
4. Gas Venting:Siv txoj hauv kev tso cai rau cov pa tso rau hauv lub qhov threaded kom dim ua ntej vuam, xws li preheating lossis purging.
5. Tsis tu ncua:Lub sijhawm tshuaj xyuas thiab tswj cov khoom siv vuam kom ntseeg tau tias nws ua haujlwm raug thiab tsis muaj qhov xau lossis teeb meem uas tuaj yeem ua rau porosity.

Hauv kev xaus, muaj npuas lossis porosity nyob rau hauv cov txiv ntoo qhov chaw vuam tuaj yeem raug ntaus nqi rau ntau yam, nrog rau cov kab mob, kev npaj tsis txaus, cov pa hauv qhov threaded qhov, tsis txaus shielding gas, thiab tsis zoo welding tsis. Los ntawm kev hais txog cov teeb meem no los ntawm kev tu kom zoo, tsim cov roj thaiv kev tiv thaiv, kev ua kom zoo ntawm cov vuam tsis zoo, cov pa cua, thiab kev saib xyuas tsis tu ncua, weld zoo tuaj yeem txhim kho zoo heev, ua rau muaj kev sib txuas zoo dua thiab txhim khu kev qha.