Dab tsi yog cov kev cov nyom ntawm vuam ttm AT335 P9 steel yeeb nkab?
Thawj qhov kev sib tw thawj zaug hauv vuam p9 steel yeeb nkab nyob hauv nws tus nyiam kom tawv li ib nrab-}} aleloy steel. Vim nws cov ntsiab lus siab ntxiv, Weld thiab tshav kub- bech cuam tshuam rau kev tsim ib qho nyuaj thiab brittle martensitic qauv thaum lub sijhawm txias nrawm. Cov qauv no yog rhiab heev rau hydrogen -}}}} ua rau cov kab tawg txias yog tias cov txheej txheem vuam tsis tau ua kom zoo. Tsis tas li ntawd, cov vuam thiav tshuaj Alters lub microstructure tau los ntawm quenching thiab tempering, muaj peev xwm ua rau ib qho txo qis hauv kev ua tau zoo. Yog li ntawd, p9 vuam yuav tsum muaj cov txheej txheem nruj heev, suav nrog preheating, siv cov vuam siv kub, thiab tshaj tawm weld kev kho cua sov.
Yuav tsum muaj kev siv vuam tshwj xeeb yog tsim nyog rau vuam p9 steel yeeb nkab?
Vuam PB hlau yeeb nkab yuav tsum muaj kev ua raws li cov txheej txheem vuam tsim nyog (WPS). Cov Txheej Txheem Tseem Ceeb xws li: Txaus preheating, feem ntau ntawm 200 {{5 ° C, kom tiv thaiv kev tawg thiab qeeb txias. Lub interpet kub yuav tsum tau ua tib zoo tswj tau kom zoo thaum lub sij hawm vuam, kom nws nyob rau hauv preheat qhov ntsuas kub ntau. Tsawg - hydrogen hydrogen welding celumables, xws li e8018 {Electrodes lossis ER80S-B2 xaim hlau, yuav tsum tau siv. Tom qab kev kho cua sov (PWHT) yog qhov yuav tsum tau ua tom qab ua tiav, feem ntau yog lub sijhawm kub ntawm 715-745 ° C rau kev ntxhov siab, txo qis tawv, thiab rov ua kom tawv.
Dab tsi ntawm cov tubttrict hlau yuav tsum tau xaiv rau vuam p9 steel yeeb nkab?
Rau vuam p9 steel yeeb nkab, muab cov hlau siv cov tshuaj lom neeg uas phim rau cov khoom siv hluav taws xob muab piv rau cov khoom siv hauv paus piv. Raws li cov qauv AWS, feem ntau siv hlau vuam (smaw) electrodes yog E8018- b2. Rau hauv paus hla hauv tungsten inert roj vuam (gtaw), er80s- b2 hlau feem ntau siv. Cov neeg siv tau muaj ib qho kev siv hluav taws xob muaj zog (CR {{10} zoo ib yam li cov khoom siv weld muaj zog thiab oxidation tiv taus uas ntawm cov khoom siv hauv paus tom qab pwht. Muaj qee kis tshwj xeeb, muaj ntau cov neeg siv tau ntau dua tuaj yeem xaiv los txhim kho Weld Tougright.
Vim li cas thiaj tshaj tawm - Weld Kev Kho Mob Kub (PWHT) yog qhov tseem ceeb rau P9 Welded Pob Qij?
Tshaj tawm - Weld Kev Kho Cua Sov (PWtht) yog qhov tseem ceeb thiab tseem ceeb kauj ruam rau P9 Welded Pob Qis. Nws ua haujlwm rau peb lub hom phiaj tseem ceeb: ua ntej, nws tau zoo tshem tawm cov kev ntxhov siab ntawm vuam, tiv thaiv kev ntxhov siab corrosion thiab txhim kho kev ruaj khov. Thib ob, Pwhal tempers lub hatensite martensite martensite, txo lub hardness ntawm tshav kub}} kev cuam tshuam cov tawv thiab cuam tshuam tsis zoo ntawm kev sib koom ua ke. Thaum kawg, nws pab tswj cov carbides khov kho thiab tso cai rau hydrogen kom dim, ua kom muaj kev nyab xeeb rau cov hauv paus, kom muaj kev nyab xeeb nyob rau hauv high- kev pab kub.
Yuav tsum tshuaj xyuas dab tsi ua ntej thiab tom qab vuam p9 steel yeeb nkab?
Yuav kom ntseeg tau weld zoo, p9 steel yeeb nkab ungoes rau cov series ntawm kev soj ntsuam nruj ua ntej thiab tom qab vuam. Ua ntej virtual, qhov zoo ntawm kev npaj zoo thiab kev nyiam huv yuav tsum txheeb xyuas, thiab qhov kub thoj yuav tsum tau txheeb xyuas kom tau raws li cov cai. Thaum lub sij hawm vuam, qhov nruab nrab kub thiab vuam tsis raug saib xyuas. Tom qab vuam thiab kev kho cua sov, pom kev kuaj xyuas (vt) yuav tsum kuaj xyuas qhov tsis xws luag. Nondestructive ntsuam xyuas (NDT) tau ua, feem ntau suav nrog kev kuaj ntshav (RT) lossis kev sim tshuaj) lossis kev sib nqus Thaum kawg, Hardness Testing yog txhais tau tias yog txhais tau tias yog qhov tseeb ntawm pwhtessess ntawm pwhlessessessessess zoo li tus nqi weld kom nyob hauv ib qho kev cai tshwj xeeb.
