Cov weld nti ntawm tempered iav puas raug tshem tawm?
Tempered iav belongs rau iav kev nyab xeeb. Tempered iav yog ib hom prestressed iav. Txhawm rau txhim kho lub zog ntawm iav, tshuaj lom neeg lossis lub cev txoj hauv kev feem ntau yog siv los tsim kev ntxhov siab ntawm cov iav. Thaum iav raug rau sab nraud quab yuam, nws feem ntau cuam tshuam qhov kev ntxhov siab ntawm qhov chaw, yog li txhim kho cov kabmob muaj peev xwm thiab txhim kho cov iav tiv thaiv cua, txias thiab kub, thiab cuam tshuam. Thaum welding ntawm qhov chaw tsim kho, vuam slag ntog rau ntawm lub iav tempered, ua rau weld caws pliav. Yog li cov weld nti ntawm tempered iav puas tuaj yeem raug tshem tawm? Tsis muaj txoj hauv kev los tshem tawm lawv.
Tempered iav yog ib hom prestressed iav. Txhawm rau txhim kho lub zog ntawm iav, tshuaj lom neeg lossis lub cev txoj kev siv feem ntau. Yog hais tias nickel sulfide crystals tshwm nyob rau hauv lub tensile kev nyuaj siab cheeb tsam ntawm tempered iav, tsuav yog muaj kev hloov nyob rau hauv siv lead ua daim ntawv, nws tus kheej tawg yuav tshwm sim. Vim tias lub sijhawm hloov pauv ntawm cov ntaub ntawv siv lead ua tsis paub meej, tus kheej tawg ntawm tempered iav ntawm chav tsev kub kuj tseem tsis paub meej, thiab kev kho detonation txo qhov tshwm sim ntawm tus kheej tawg. Kev tiv thaiv ntawm cov iav tempered kom txias txias thiab cua sov yog 3 mus rau 5 npaug siab dua li cov iav zoo tib yam. Feem ntau nws tuaj yeem tiv taus qhov kub thiab txias ntawm ntau tshaj 250 degrees, uas muaj qhov cuam tshuam loj rau kev tiv thaiv thermal tawg. Nws yog ib hom iav kev ruaj ntseg. Txhawm rau kom muaj kev nyab xeeb ntawm cov tsev siab siab muab cov khoom tsim nyog.
Thaum cov khoom sib txuas nrog qhov kub siab tshaj 300 degrees txaws mus rau ntawm cov iav tempered, cov iav tempered feem ntau yuav tsis puas. Cov ntawv txuas rau ntawm lub khob tuaj yeem raug tshem tawm nrog cov cuab yeej xws li rab riam thiab cov ntawv txiav, tab sis lawv yuav tawm cov cim tsis sib xws. Qhov kub ntawm qhov chaw vuam slag feem ntau yog tshaj 900 degrees, uas yog qhov nyuaj rau tshem tawm. Feem ntau, nyob rau hauv rooj plaub no, lub khob tsuas yog hloov tau. Tom qab kev kho homogenization nruj, qhov tshwm sim ntawm tempered iav nws tus kheej tawg yuav raug txo kom tsawg, thiab qhov tshwm sim ntawm ib daim iav nws tus kheej tawg hauv 10,000 square meters hauv 1 xyoo tsuas yog tsawg dua 1%. Lub sijhawm no, tempered iav tuaj yeem hu ua iav kev nyab xeeb tiag tiag.
