Yuav kom tau txais cov pob qij txha mus tas li hauv kev lag luam thiab hauv lub neej txhua hnub, ntau hom vuam siv dav siv. Nyob rau hauv txoj kev no, homogeneous hlau thiab lawv cov alloys yog cuam tshuam nrog. Vuam tau txiaj ntsig los ntawm kev lag luam kev xav, nws yog tus yam ntxwv ua tau zoo thiab muab qhov zoo ntawm kev koom nrog cov ntaub ntawv.
Vuam tshuab
Vuam yog txheej txheem thev naus laus zis nyob rau hauv uas cov ntawv cog lus muaj zog tsim ntawm nruab nrab ntawm cov atoms thiab cov lwg me me hauv cov ntu los koom. Txhawm rau kom muaj kev sib txuas zoo li no, saum npoo ntawm cov txheej txheem kho yog preliminarily ntxuav los ntawm kev sib kis, thiab zaj duab xis oxide kuj raug tshem tawm los ntawm qhov chaw. Npaj ua haujlwm ntau cuam tshuam rau qhov tsis zoo ntawm kev txuas.
Cov chaw uas yuav tsum tau tsim yog coj los ua ke kom qhov kev ncua deb ntawm lawv yog qhov tsawg heev. Tom qab ntawd cov seem yog raug muaj zog ua kom cua sov hauv zos lossis yas deformation, tom qab uas cov xov paj ntsaws txuas, ua rau ib leeg kheej. Ntawm theem kawg, tus hlau txuas yog ua tiav.
Nws muaj peb chav kawm ntawm vuam: neeg kho tshuab, cua sov thiab thermomechanical. Mechanical yam ntawm vuam raug ua tiav siv lub zog siab, piv txwv li kev ua haujlwm ntawm cov khoom ua haujlwm los ntawm kev sib txhuam, tawg lossis ultrasound. Cov hlau txuas siv cov hluav taws xob yaj thaum siv lub zog cua sov. Thermomechanical welding txuas cov yam ntxwv ntawm ob chav kawm tau piav qhia.
Lub ntsiab vuam
Arc vuam yog ib qho ntawm ntau hom ntawm li cov khoom siv koom. Hauv qhov no, vuam electrodes raug siv, uas tau nruab rau hauv tus tuav tshwj xeeb thiab txav mus raws yav tom ntej seam. Ib qho hluav taws xob arc yog tsim los ntawm tus pas nrig electrode thiab qhov khoom ua haujlwm, cov hlau yaj thiab ua kom tiav ntawm qhov txuas, maj mam tawv.
Hauv kev txhim kho thaum tsis muaj vuam, qhov cua sov luv ntawm qhov chaw ntawm kev sib koom ua ke ntawm qhov chaw tau ua, uas tsis cuam tshuam lub melting ntawm sawv ntawm workpieces. Hauv qhov no, yas deformation ntawm cov hlau yuav siv qhov chaw, uas ua rau muaj qhov tsim ntawm lub welded sib koom tes. Yuav kom sov cov kev sib tshuam thaum lub sij hawm tsis kam vuam, ib qho hluav taws xob siv hluav taws xob, uas yog qhov ntawm cov khoom siv cua sov. Ntawm cov ntsiab lus ntawm kev sib tiv tauj, cov hlau ua tau ductile, uas yooj yim rau koom nrog cov chaw.
Nws yog dav siv hauv kev tsim khoom thiab roj vuam. Hauv qhov no, qhov chaw uas cov ntu yuav tsum txuas nrog yog sib zog nrog lub nplaim hluav taws kub ntawm qhov kub kub. Cov npoo ntawm workpieces yaj raws li cov thermal ua. Ib qho muab tub lim cov khoom noj tau pub rau hauv qhov sib txawv, uas ua haujlwm muab lub weld. Qhov kom zoo dua ntawm cov roj vuam dua arc vuam yog tias cov khoom ua haujlwm nyob rau hauv qhov kev ua ntawm lub dav hlau roj tso cua sov kom ntau dua. Qhov no tso cai rau hom vuam siv los koom rau kev ua haujlwm ntawm cov qhov tuab tuab.
