7018 yog lub siab zoo carbon hlau electrode ua los ntawm cov hmoov hlau thiab cov khoom siv hydrogen potassium tsawg dua txheej. Lub vuam vuam muaj cov txheej txheem vuam zoo ua tau zoo, kev ua tau zoo arc nruj tsis yooj yim, tsis yooj yim los tsim qhov sib nqus, qhov zoo thiab huv ntawm qhov txuas, tsis muaj qhov tawg, thiab yooj yim slag tshem tawm; lub weld hlau muaj zoo heev thiab ruaj khov uas tsis tshua muaj kub toughness thiab tawg tsis kam. Ob leeg AC thiab DC tuaj yeem siv rau txhua txoj haujlwm vuam.
70 hais txog qhov tsawg kawg nkaus tensile zog (ksi) ntawm cov hlau nruas, thiab 18 yog hais txog qhov chaw ntawm electrode, hom txheej, thiab vuam tam sim no.
Txoj kev paub ntxiv:
Txoj kev vuam feem ntau muab faib ua peb pawg: fusion vuam, vuam siab thiab txhuam raws li cov cua kub thiab siab thaum vuam:
1. Fusion vuam yog ib txoj hauv kev uas cov hlau ntawm qhov txuas ntawm qhov txuas tau txuas mus rau lub xeev yaj thaum lub sijhawm vuam, thiab vuam feem ntau ua tiav yam tsis muaj lub siab. Thaum lub sijhawm fusion vuam, cov khoom siv hluav taws xob kub sai melts cov hlau ntawm qhov sib txuas weld thiab cov muab tub lim hlau ntxiv thaum tsim nyog los tsim cov pas dej tsis muaj zog. Chav pas dej da dej txuas nrog kev txav ntawm cov khoom ua kom sov thiab tsim cov hlau txuas txuas tom qab txias.
Fusion vuam siv hluav taws xob siv hluav taws xob tuaj yeem muab faib ua arc vuam, electroslag vuam, tshuab hluav taws xob nqaj hlau vuam thiab laser vuam raws li cov qauv hluav taws xob cua sov sib txawv. Fusion vuam muaj ntau hom kev siv, thiab feem ntau siv ntau txoj hauv kev vuam siv, tshwj xeeb tshaj yog arc vuam.
2. Lub zog vuam yog lub vuam txoj hauv kev uas cov hlau txuas sib koom ua ke ntawm kev kub siab (cua sov lossis tsis). Feem ntau, tsis muaj cov muab tub lim hlau ntxiv thaum lub sij hawm lub siab vuam. Siab vuam tuaj yeem muab faib ua vuam kev ua haujlwm, siab vuam, txuas vuam vias, vuam txhuam, vuam ultrasonic, thiab lwm yam raws li cov txheej txheem vuam sib txawv. Ntawm lawv, kev txhim kho hlau txuas yog qhov feem ntau siv.
Feem ntau lub siab vuam txoj kev tsis muaj txheej txheem melting, thiab tsis muaj teeb meem ntawm kev hlawv cov txiaj ntsig cov ntsiab lus zoo thiab kev nqus ntawm cov khoom tsis zoo rau lub hlau txuas zoo li fusion welding. Txawm li cas los xij, cov ntawv cog lus muaj vuam ntawm vuam siab yog qhov nyuaj thiab qhov chaw thov yog nqaim.
3. Brazing yog cov txheej txheem vuam nyob rau hauv uas cov khoom siv nrog qhov chaw qis melting (soldering muab tub lim hlau) yog yaj thiab tom qab ntawd welded ua ke, thiab qhov chaw txuas txuas tau txuas nrog tom qab txias.
