Kev ntsuas rau hnav-resistant yeeb nkab vuam txuas
Vuam txheej txheem xaiv
Xaiv txoj kev vuam tsim nyog: Xaiv txoj kev vuam raws li cov khoom siv thiab phab ntsa tuab ntawm cov yeeb nkab hnav-resistant. Rau cam khwb cia pob zeb los yog ceramic puas kav nrog cov phab ntsa nyias, argon arc vuam siv tau, uas tuaj yeem muab qhov chaw ruaj khov thiab cov cua sov me me kom txo tau cov vuam deformation; rau cov kav hlau tsis muaj zog nrog cov phab ntsa tuab, phau ntawv arc vuam lossis submerged arc vuam siv tau los xyuas kom meej qhov nkag thiab lub zog ntawm cov vuam.
Txiav txim siab vuam tsis: Txiav txim siab qhov zoo tshaj plaws vuam tsis raws li cov yeeb nkab khoom thiab vuam txoj kev. Piv txwv li, thaum welding high-chromium alloy hnav-resistant kav, vuam tam sim no feem ntau tswj ntawm 100-150A (hloov raws li cov yeeb nkab txoj kab uas hla thiab phab ntsa thickness), qhov vuam voltage yog 20-25V, thiab qhov vuam ceev yog tswj ntawm 8-12cm / min, uas tuaj yeem ua kom muaj kev sib txuas zoo thiab kev sib khi zoo.
Vuam ua haujlwm
Kev npaj bevel: Ua ntej vuam, cov yeeb nkab yuav tsum tau beveled. Lub bevel lub kaum sab xis thiab blunt ntug loj yuav tsum tau raws li cov txheej txheem vuam yuav tsum. Piv txwv li, rau lub V-shaped bevel, lub kaum sab xis feem ntau yog 60-70 degrees thiab qhov loj ntawm ntug yog 1-2 hli. Qhov no ua kom ntseeg tau tias cov khoom siv vuam tuaj yeem ua tiav cov bevel thaum lub sij hawm vuam thiab tsim cov vuam zoo.
Ua ib txoj hauj lwm zoo ntawm preheating ua ntej vuam thiab kev txuag hluav taws xob tom qab vuam: Rau qee qhov hnav-tiv taus kav ua los ntawm cov ntaub ntawv tshwj xeeb, xws li high-chromium alloy kav, preheating ua ntej vuam tuaj yeem txo qhov kev ntxhov siab ntawm vuam, thiab kev txuag hluav taws xob tom qab vuam tuaj yeem ua rau vuam. txias maj mam, txhim kho lub sealing thiab zoo ntawm cov weld. Qhov ntsuas kub ua ntej yog feem ntau 200-300 degree (hloov raws li cov khoom siv thiab phab ntsa tuab), thiab lub sijhawm khaws cia cua sov tuaj yeem suav tau raws li cov yeeb nkab phab ntsa thickness ntawm 1-2 feeb ib millimeter.
Kev kuaj tsis muaj kev puas tsuaj: Tom qab vuam ua tiav, kev ntsuas tsis muaj kev puas tsuaj yog ua rau ntawm qhov vuam, xws li kev kuaj ultrasonic lossis kuaj hluav taws xob, txhawm rau xyuas seb puas muaj qhov tsis xws luag xws li qhov pores, slag inclusions, thiab tsis tiav nkag mus rau hauv lub vuam. Txhua qhov tsis xws luag yuav tsum tau kho kom raws sijhawm kom ntseeg tau tias qhov vuam zoo ua tau raws li qhov yuav tsum tau ua.
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