Dab tsi ntawm vuam cov khoom siv tau pom zoo rau vuam astm A333 Gr.8 steel yeeb nkab?
Vuam Gra8 Steel Yeeb Nkab yuav tsum tau tshwj xeeb tsim highy-} {{{{{} kub nruj phim cov hlau. Feem ntau siv cov consumables suav nrog enicrfe-3 (xws li inconel 152 electrode) teev nyob rau hauv AWS AWS A5.14 lossis ERICRMO-3 teev hauv AWS A5.11. Rau automated vuam, cov xov hlau xws li ernicrfe-7 kuj tau siv. Lub hauv paus ntsiab lus tseem ceeb hauv kev xaiv vuam consumabables yog tias cov hlau tso nyiaj yuav tsum muaj ntau tus neeg hlau kom ntseeg tau tias cov weld muaj qhov sib npaug ntawm cov kub kub.
Vim li cas nws tseem ceeb kom nruj nruj kev tswj tshav kub thiab cuam tshuam qhov kub thiab txias thaum vuam?
Nruj me ntsis tswj cov lus qhia kub thiab kev sib txuam yog qhov tsim nyog los tiv thaiv cov nplej coarsening thiab carbide nag lossis nag- bead cuam tshuam cheeb tsam (Haz). Cov kev tshav kub ntau dhau thiab ua rau kub taub hau dhau los ua kom muaj kev loj hlob sai sai, ua rau qhov sib txuas tsis muaj zog ntawm qhov sib koom ua ke tag nrho. Tsawg cov cua sov tawm, me me-}}}}}}}}}}}} Qhov kub kub ceev ceev ceev ceev ceev ceev ceev ceev ceev ceev ceev ceev ceev ceev ceev ceev ceev ceev. Qhov no yog qhov kev ntsuas tseem ceeb kom ntseeg tau qhov ua tau zoo tag nrho ntawm welded sib koom tes, tshwj xeeb tshaj yog nws qhov kev cuam tshuam kub tsawg heev.
Yog post - Weld Kev Kho Cua Sov (Pwhat) tsim nyog? Nws lub hom phiaj yog dab tsi?
Rau astm A333 Gr.8 steel yeeb nkab, post- Weld Kev Kho Mob Kub (PWHT) Lub hom phiaj tseem ceeb ntawm pwht yog: ua ntej, kom tshem tawm cov kev ntxhov siab uas muaj nyob rau hauv vuam thiab tiv thaiv kev ntxhov siab corrosion tawg. Thib ob, txhawm rau txhim kho microstructure ntawm tshav kub- bein muaj qhov kub loj, thiab rov ua kom sov} kub tau raug txo los ntawm vuam thermal cycling. Pwhat tsis (kub, sijhawm, cov nqi cua sov / cua txias) yuav tsum tau nruj me ntsis cov txheej txheem welding cov txheej txheem (WPS).
Yuav ua li cas ceev faj yuav tsum tau coj thaum machining thiab txias {{0} Txoj kev sib haum as} cov yeeb nkab steel?
Gr.8 hlau muaj lub zog siab thiab tawv heev, yog li machining siv cov cuab yeej carbide thiab kev txiav kom zoo thiab txau. Cov kev ua haujlwm txias xws li tawg txias yuav tsum muaj cov zog siab dua vim nws muaj zog ua haujlwm hnyav dua li cov hlau. Txog kev ua kom txias kev cuam tshuam nrog kev tiv thaiv loj, kev nyuaj siab pab txhawb kev ua haujlwm tom qab kev sib sau ua haujlwm tawv thiab restidual kev nyuaj siab thiab rov qab cov khoom siv tawv. Tom qab txiav lossis machining, nto seem thiab roj yuav tsum tau muab tshem tawm kom meej.
Yuav ua li cas yog Vuam cov txheej txheem yuav tsum tau (PQR / WPQ) ua kom paub meej tias cov txheej txheem puas tuaj yeem siv tau?
Vuam cov txheej txheem yuav tsum muaj kev tsim nyog raws li Seme Seem IX lossis tus qauv hauv tebchaws. Cov txheej txheem kev tsim nyog tau muaj cov txheej txheem weldingination spring kev ua kom muaj kev sib tw (PWPS), vuam xeem pieces, thiab tom qab ntawd ua kev sim ua tsis taus thiab ua rau kev sim siab rau cov pieces. Kev ua kev puas tsuaj loj heev rau cryogenic hlau kav hlau. Qhov no suav nrog -} xyoo 195℃charpy v {} Cov Lus Sib cuam tshuam kub, khoov kuaj, thiab macrometallogrographic kuaj. Tsuas yog thaum txhua qhov kev ntsuas cov txiaj ntsig tau raws cov txheej txheem vus neeg yuav tsum tau ua ib qho kev cai thaiv kev thaiv vuam (WPS) thiab cov txheej txheem
