Temperature Distribution Thaum Lub Taub Hau Vuam

Kev faib tawm kub thaum lub pob tw vuam yog qhov tseem ceeb uas cuam tshuam rau cov txheej txheem vuam thiab qhov zoo ntawm qhov tshwm sim welds. Kev nkag siab txog qhov kub ntawm qhov sib txawv ntawm thaj chaw weld yog qhov tseem ceeb rau cov neeg siv khoom thiab cov kws tshaj lij hauv kev lag luam vuam. Qhov tsab xov xwm no tshawb txog qhov kub thiab txias thaum lub sij hawm vuam pob tw, qhia txog nws qhov cuam tshuam rau cov khoom siv vuam thiab muab kev nkag siab rau kev ua kom zoo ntawm cov txheej txheem vuam.

1. Lub ntsiab lus ntawm Temperature Distribution: Temperature Distribution yog hais txog qhov sib txawv ntawm qhov sib txawv ntawm qhov sib txawv ntawm qhov sib koom ua ke thaum lub sij hawm vuam. Nws nyob ntawm qhov kub-kub fusion cheeb tsam mus rau qis-kub-kub-tshem tawm tsam (HAZ) thiab cov hlau puag ncig.
2. Fusion Zone: Lub cheeb tsam fusion yog thaj tsam nruab nrab ntawm cov weld uas qhov kub siab tshaj plaws mus txog. Nws yog thaj chaw uas lub hauv paus hlau melts thiab fuses ua ke los tsim cov hlaws weld. Ua kom cov cua sov kom zoo nyob rau hauv cheeb tsam no yog qhov tseem ceeb heev rau kev ua tiav lub suab weld kev ncaj ncees.
3. Heat-Affected Zone (HAZ): Nyob ib puag ncig thaj tsam fusion, thaj chaw muaj kev cuam tshuam los ntawm tshav kub muaj qhov kub qis dua piv rau thaj tsam fusion. Txawm hais tias nws tsis yaj, HAZ tau txais kev hloov pauv ntawm cov hlau uas tuaj yeem cuam tshuam nws cov khoom siv kho tshuab.
4. Residual Stress thiab Distortion: Qhov kub thiab txias faib cuam tshuam rau residual stresses thiab distortion nyob rau hauv lub welded qauv. Kev ua kom txias sai ntawm thaj chaw fusion thiab HAZ tuaj yeem ua rau muaj kev sib cog lus thiab ua rau muaj kev ntxhov siab, ua rau muaj kev cuam tshuam lossis tawg.
5. Preheating thiab Post-Weld Heat Treatment (PWHT): Txhawm rau tswj qhov kub thiab txias thiab txo cov teeb meem, kev ua haujlwm ua ntej thiab tom qab vuam cua sov (PWHT) yog ua haujlwm. Preheating nce lub hauv paus hlau kub, txo qhov kub thiab txias gradient thiab txo thermal stresses. PWHT pab txo qis kev ntxhov siab thiab rov kho cov khoom siv tom qab vuam.
6. Optimizing Welding Parameters: Kho qhov vuam tsis zoo, xws li vuam tam sim no, qhov hluav taws xob, kev mus ncig ceev, thiab cov khoom siv hluav taws xob, tso cai rau cov welder tswj qhov kub thiab txias. Kev xaiv tsis raug cai ua kom ntseeg tau qhov xav tau weld nkag mus thiab fusion thaum txo qhov kev pheej hmoo ntawm overheating lossis underheating.
7. Thaum tshav kub kub Input thiab Material Thickness: Lub tshav kub input thiab cov khoom thickness kuj cuam tshuam qhov kub thiab txias. Cov ntaub ntawv tuab dua tuaj yeem xav tau cov khoom siv hluav taws xob ntau dua, thaum cov ntaub ntawv nyias nyias xav tau kev tswj vuam kom tsis txhob muaj cua sov.
8. Kev Ntsuas Kub thiab Kev Tswj Xyuas: Cov txheej txheem vuam niaj hnub no suav nrog kev ntsuas kub thiab tswj cov tshuab, ua kom lub sijhawm tawm tswv yim ntawm qhov kub thiab txias. Qhov no txhawb kev hloov kho thaum lub sij hawm vuam txheej txheem kom tswj tau qhov kub thiab txias.

Hauv kev xaus, qhov kub ntawm qhov sib faib thaum lub taub qab vuam cuam tshuam rau qhov zoo ntawm qhov vuam, qhov seem seem, thiab cov khoom siv. Qhov ntsuas kub tswj tau zoo, los ntawm thaj chaw fusion mus rau thaj chaw muaj kev kub ntxhov thiab cov hlau puag ncig, yog qhov tseem ceeb rau kev ua tiav suab welds. Welders tuaj yeem txhim kho qhov kub thiab txias los ntawm preheating, tom qab vuam kev kho cua sov, thiab kho qhov vuam tsis. Kev soj ntsuam thiab tswj qhov kub thiab txias hauv lub sijhawm tiag tiag txhim kho vuam precision thiab ua rau cov vuam zoo ib yam thiab txhim khu kev qha. Los ntawm kev nkag siab qhov tseem ceeb ntawm qhov kub thiab txias thaum lub sij hawm vuam pob tw, cov kws tshaj lij tuaj yeem txhim kho cov kev siv vuam, ua kom muaj kev ncaj ncees, thiab ua tau raws li cov qauv vuam nruj. Kev hais txog kev tswj qhov kub thiab txias hauv kev ua haujlwm vuam txhawb kev nce qib hauv cov hlau koom nrog thev naus laus zis thiab txhawb kev tsim kho tshiab hauv kev lag luam vuam.