Cov txheej txheem thermal ntawm lub zog cia qhov chaw vuam tshuab plays lub luag haujlwm tseem ceeb hauv kev ua tiav cov vuam zoo. Kab lus no muab cov ntsiab lus ntawm cov txheej txheem thermal koom nrog hauv lub zog cia qhov chaw vuam, piav qhia cov theem tseem ceeb thiab cov yam ntxwv uas ua rau muaj kev kub ntxhov, hloov pauv, thiab kev tswj xyuas thaum lub sijhawm vuam.
- Thaum tshav kub kub Generation: Thaum tshav kub kub tsim nyob rau hauv ib lub zog cia chaw vuam tshuab yog feem ntau ua tiav los ntawm kev tso tawm ntawm cov khoom siv hluav taws xob. Lub zog khaws cia hauv lub capacitors yog tawm sai sai hauv daim ntawv ntawm cov hluav taws xob tam sim no, uas ntws los ntawm cov khoom siv ua haujlwm. Qhov tam sim no ntsib kev tiv thaiv, ua rau joule cua sov, qhov twg cov hluav taws xob hluav taws xob hloov mus rau hauv lub zog hluav taws xob ntawm qhov sib txuas.
- Thaum tshav kub kub hloov: Thaum tshav kub yog generated ntawm weld interface, nws undergoes tus txheej txheem ntawm tshav kub hloov. Qhov no suav nrog kev txav ntawm lub zog hluav taws xob los ntawm thaj chaw vuam mus rau cov khoom siv thiab ib puag ncig. Thaum tshav kub kub hloov tau tshwm sim los ntawm ntau yam mechanisms, xws li conduction, convection, thiab hluav taws xob. Tus nqi ntawm tshav kub hloov yog nyob ntawm yam xws li cov khoom siv, kev sib koom ua ke, thiab cov xwm txheej ib puag ncig.
- Melting thiab Solidification: Thaum lub sij hawm vuam txheej txheem, lub tshav kub hauv zos ua rau cov ntaub ntawv ua haujlwm kom ncav cuag lawv cov ntsiab lus melting. Qhov kub siab ntawm qhov sib txuas ntawm qhov sib txuas ua rau lub melting thiab tom qab fusion ntawm cov ntaub ntawv. Raws li cov cua kub dissipates, cov ntaub ntawv molten solidify, tsim ib tug muaj zog metallurgical daim ntawv cog lus. Kev tswj cov cua sov thiab cua txias tus nqi yog qhov tseem ceeb los xyuas kom zoo fusion thiab tsis txhob muaj qhov tsis xws luag xws li undercuts los yog overheat-cuam tshuam cheeb tsam.
- Kev Tswj Thermal: Ua kom tau qhov zoo tshaj plaws weld zoo yuav tsum muaj kev tswj xyuas thermal thaum lub sij hawm vuam txheej txheem. Lub zog cia chaw vuam tshuab muaj ntau txoj hauv kev los tswj cov thermal tsis. Cov neeg ua haujlwm tuaj yeem hloov kho qhov vuam tam sim no, lub sijhawm mem tes, thiab lwm yam kev ntsuas los tswj cov cua sov nkag thiab tswj qhov kub thiab txias hauv qhov chaw ua haujlwm. Qhov kev tswj no ua kom zoo ib yam thiab rov ua dua welds, txo qhov kev pheej hmoo ntawm overheating lossis tsis txaus fusion.
- Thaum tshav kub kub-cuam tshuam cheeb tsam: nyob ib sab ntawm lub weld cheeb tsam, ib cheeb tsam hu ua lub tshav kub-cuam tshuam cheeb tsam (HAZ) muaj kev hloov thermal thaum lub sij hawm vuam. HAZ tau dhau los ntawm cov cua kub sib txawv, uas tuaj yeem ua rau muaj kev hloov pauv hauv microstructural, xws li kev loj hlob ntawm cov qoob loo lossis theem hloov pauv. Qhov loj thiab qhov twg ntawm HAZ nyob ntawm seb qhov vuam tsis zoo, cov khoom siv, thiab kev sib koom ua ke. Kev tswj kom zoo ntawm cov txheej txheem thermal pab txo qis qhov dav thiab muaj peev xwm cuam tshuam los ntawm HAZ.
Cov txheej txheem thermal ntawm lub zog cia qhov chaw vuam tshuab yog qhov tseem ceeb ntawm kev ua tiav kev ua tiav thiab zoo welds. Los ntawm kev tswj hwm tiam, kev hloov pauv, thiab kev tswj cov cua sov, cov neeg ua haujlwm tuaj yeem tsim cov welds txhim khu kev qha thiab ruaj khov nrog kev cuam tshuam tsawg thiab qhov tsis xws luag. Kev nkag siab txog cov txheej txheem thermal thiab kev siv cov txheej txheem tswj kom zoo tso cai rau kev ua haujlwm vuam zoo, ua kom cov vuam zoo sib xws thiab ua tau raws li qhov yuav tsum tau ua ntawm ntau yam kev lag luam.
Post lub sij hawm: Jun-07-2023
