Nyob rau hauv lub ntiaj teb no ntawm vuam, ntau yam tuaj rau hauv kev ua si los xyuas kom meej qhov zoo thiab kev ncaj ncees ntawm cov khoom kawg. Ib qho piv txwv zoo li no yog qhov kev xav ntawm thermal equilibrium nyob rau hauv nruab nrab-frequency direct tam sim no qhov chaw vuam. Hauv tsab xov xwm no, peb tshawb nrhiav qhov tseem ceeb ntawm thermal equilibrium hauv cov txheej txheem vuam no thiab nws qhov cuam tshuam rau qhov kawg vuam.
Medium-frequency direct tam sim no qhov chaw vuam, feem ntau tsuas yog hu ua MFDC qhov chaw vuam, yog cov txheej txheem siv dav hauv ntau yam lag luam, suav nrog tsheb, aerospace, thiab kev tsim khoom. Nws koom nrog ob daim hlau los ntawm kev siv hluav taws xob tam sim no ntawm qhov nruab nrab zaus, feem ntau ntawm 1000 Hz thiab 10000 Hz, los ntawm tooj liab alloy electrodes. Cov hluav taws xob tam sim no tsim cov cua sov, uas ua rau cov hlau melts ntawm qhov chaw vuam, thiab thaum txias, ib qho khoom weld yog tsim.
Ib qho tseem ceeb ntawm kev txiav txim siab hauv cov txheej txheem no yog ua tiav cov thermal equilibrium. Thermal equilibrium yog hais txog lub xeev uas lub tshav kub nkag mus rau lub workpiece yog sib npaug los ntawm tshav kub poob, uas ua rau ib tug ruaj khov thiab tswj kub nyob rau hauv lub vuam cheeb tsam. Kev ua tiav thermal equilibrium yog qhov tseem ceeb rau ntau yam:
- Consistency thiab Quality: Vuam ntawm qhov ntsuas kub ruaj khov ua kom zoo ib yam thiab zoo welds. Qhov kub tsis sib xws tuaj yeem ua rau muaj qhov tsis xws luag xws li porosity, tawg, lossis tsis txaus nkag.
- Optimal Weld Properties: Cov ntaub ntawv sib txawv yuav tsum tau tshwj xeeb vuam kub kom ua tau raws li qhov xav tau ntawm cov khoom siv tshuab. Thermal equilibrium tso cai rau kev tswj cov cua sov kom zoo, kom ntseeg tau tias qhov kawg weld muaj qhov yuav tsum tau muaj zog thiab kav ntev.
- Tsawg Distortion: Vuam tuaj yeem ua rau muaj kev cuam tshuam ntawm qhov chaw ua haujlwm vim tsis sib xws ntawm cua sov thiab cua txias. Thermal equilibrium pab txo qis distortion, kom ntseeg tau tias cov khoom kawg tswj nws cov hom phiaj thiab qhov ntev.
- Zog Efficiency: Vuam ntawm qhov kub thiab txias yuav txo tau lub zog noj thiab txo cov khoom pov tseg. Cov txheej txheem vuam tsis zoo tuaj yeem ua rau cov nqi hluav taws xob ntau ntxiv thiab cov khoom poob.
Ua kom muaj qhov sib npaug ntawm qhov sib npaug hauv MFDC qhov chaw vuam yuav tsum ceev faj tswj ntawm ntau yam tsis xws li tam sim no, voltage, vuam lub sij hawm, thiab electrode quab yuam. Kev ntsuas ntsuas kub thiab cov tswv yim tawm tswv yim feem ntau yog ua haujlwm los tswj qhov kub thiab txias thoob plaws hauv cov txheej txheem vuam.
Lub tshuab vuam tsim kuj tseem ua lub luag haujlwm tseem ceeb hauv kev ua kom tau raws li qhov sib npaug ntawm cov thermal equilibrium. Cov txheej txheem ua kom muaj cua sov kom zoo, ua kom zoo electrode txias, thiab kev tswj xyuas meej ntawm cov vuam tsis yog tsim nyog los xyuas kom meej qhov kub thiab txias.
Hauv kev xaus, thermal equilibrium yog ib qho tseem ceeb rau kev txiav txim siab nyob rau hauv nruab nrab-frequency direct tam sim no qhov chaw vuam. Nws cuam tshuam ncaj qha rau qhov zoo, sib xws, thiab kev ua haujlwm ntawm cov txheej txheem vuam. Vuam engineers thiab cov neeg ua haujlwm yuav tsum ua tib zoo saib xyuas thiab tswj ntau yam kev ntsuas kom ua tiav thiab tswj xyuas qhov sib npaug ntawm qhov sib npaug, kom ntseeg tau tias qhov kawg vuam ua tau raws li cov qauv tsim nyog thiab cov lus qhia tshwj xeeb.
Post lub sij hawm: Oct-11-2023