Tsawg-alloy steel vuam rods muaj xws li qis-alloy high-strength steel vuam rods, tshav kub-resistant steel vuam rods thiab qis-kub steel vuam pas nrig nrog lub zog tensile ntawm 500MPa los yog siab dua. Nyob rau hauv txoj kab nrog lub thoob ntiaj teb low-alloy steel electrode, nws cov kev ua tau zoo raug soj ntsuam raws li lub teb chaws tus qauv GB / T 5118-1995 lossis GB / T 983-1995.
Cov lus qhia rau kev siv:
Txhawm rau ua txoj haujlwm zoo ntawm vuam, koj yuav tsum muaj kev nkag siab txog cov khoom siv ntawm cov khoom siv vuam, kev ua haujlwm ntawm cov khoom siv vuam thiab kev ua haujlwm ntawm cov khoom siv vuam siv, thiab xaiv qhov tsim nyog thiab kev koom tes txhawm rau ua kom zoo ntawm cov khoom siv vuam. welded khoom.
Feem ntau raws li cov tshuaj lom neeg muaj pes tsawg leeg, cov khoom siv kho tshuab, kev sib tsoo thiab lwm yam kev xav tau ntawm cov phaj steel, kev txiav txim siab zoo kuj tau muab rau cov qauv welded, kev ua haujlwm, kev ntxhov siab thiab cov khoom siv vuam. Yog tias tsim nyog, kev ntsuam xyuas weldability yuav tsum tau txiav txim siab vuam pas nrig thiab ua cov txheej txheem tsim nyog.
A: Vuam ntawm cov hlau tsis tshua muaj hlau. Feem ntau, qhov sib txuas vuam pas nrig raug xaiv raws li qib zog ntawm cov hlau. Nyob rau tib lub sijhawm, kev txiav txim siab dav dav yuav tsum tau ua raws li qhov weldability ntawm cov hlau, kev hloov pauv ntawm lub hauv paus hlau muaj pes tsawg leeg, qhov loj, cov duab, zawj, thiab quab yuam ntawm cov qauv welded. Nyob rau hauv qhov xwm txheej tsis zoo uas cov vuam seam muaj qhov txias dua, uas ua rau muaj zog dua, thiab cov vuam sib txuas yog qhov ua rau tawg, vuam pas nrig nrog thawj theem ntawm lub zog ntau dua li lub hauv paus hlau feem ntau tuaj yeem xaiv. Nyob rau hauv cov ntaub ntawv ntawm ntau txheej welding ntawm tuab daim hlau los yog normalizing kev kho mob tom qab vuam, nws yog tsim nyog los tiv thaiv lub phenomenon ntawm tsawg weld zog.
B: Xaiv cov kua qaub electrode lossis alkaline electrode ntawm tib lub zog. Feem ntau yog nyob ntawm cov qauv ntawm cov vuam (yooj yim los yog complex), lub thickness ntawm cov hlau phaj (loj los yog me me rigidity), ua hauj lwm tej yam kev mob (zoo li qub load los yog dynamic load) thiab tawg kuj ntawm cov hlau. Feem ntau, thaum nws xav tau cov yas zoo, muaj kev cuam tshuam zoo, kev ua haujlwm kub tsis zoo, thiab muaj zog tawg tsis kam, alkaline electrodes yog siv. Yog tias DC fais fab mov nyuaj, koj tuaj yeem xaiv AC thiab DC alkaline electrodes.
C: Rau cov pa roj carbon steel thiab cov hlau tsis tshua muaj hlau, lossis cov hlau tsis sib xws ntawm cov hlau tsis tshua muaj hlau thiab cov hlau tsis tshua muaj hlau, cov khoom siv vuam sib raug rau cov hlau uas muaj cov qib qis zog feem ntau xaiv.
D: Vuam ntawm nruab nrab carbon steel. Vim muaj cov ntsiab lus carbon siab ntawm cov hlau, qhov nyiam ntawm vuam tawg yog nce. Tsawg-hydrogen welding rods lossis vuam rods nrog zoo plasticity thiab siab toughness ntawm deposited hlau yuav raug xaiv, thiab cov weldments yuav tsum tau preheated thiab maj mam txias.
E:Vuam ntawm cam khwb cia hlau. Cam khwb cia hlau feem ntau muaj cov ntsiab lus siab carbon, lub thickness loj thiab cov duab nyuaj, thiab nws yog ib qho yooj yim los tsim cov kab nrib pleb. Tshwj xeeb tshaj yog thaum cov ntsiab lus ntawm alloying ntsiab nyob rau hauv cam khwb cia hlau yog ntau, nws yog ib qho tseem ceeb. Yog li ntawd, yuav tsum tau them tshwj xeeb mloog nyob rau hauv vuam. Feem ntau, tsawg-hydrogen electrode tuaj yeem siv tau, thiab ntsuas xws li preheating thiab cov txheej txheem vuam tsim nyog yuav tsum tau ua.
F: Rau qib steel thiab welded qauv nrog tshwj xeeb siv tej yam kev mob, tshwj xeeb electrodes yuav siv tau.
G: Kev siv ntau yam tam sim no: Yog tias lub workpiece yog preheated, nws tuaj yeem raug txo los ntawm 5% -15% piv rau qhov qub tam sim no; thaum siv DC, nws yog li 10% tsawg dua AC; tam sim no rau ntsug vuam thiab nyiaj siv ua haujlwm vuam yog 10%-15% tsawg dua li ntawm cov vuam vuam
