Stainless hlau tuab-walled yeeb yog siv feem ntau niobium-strengthened tsawg-alloy nruab nrab-kub siab txog ntsha siab hlau nrog ib tug tawm los lub zog ntau tshaj 50 kg / mm2. Txuj ci hlau (YB) 182-69" Tus Txheej Txheem Kev Tsim Kho Cov Hlau thiab zoo tib yam tsis tshua muaj hlau Alloy Hlau rau Boilers" qhia meej cov tshuaj lom neeg ua ke thiab cov yam ntxwv ntawm 304 stainless hlau tuab-walled kav. Cov yeeb nkab steel hlau tuam txhab feem ntau yog muab cov tuab-phab ntsa steel kav nrog lub thickness ntawm tsawg dua 40 mm nyob rau hauv lub kub lub xeev. 40-115 hli tuab cov kav hlau muaj kev pabcuam hauv cov xeev annealed (5908-9 teev, cua sov ua kom txias); txawm li cas los xij, cov khoom lag luam yuav tsum tau siv rau hauv qhov qub thiab npau los yog quenched thiab tempered xeev.
Cov lus tseem ceeb tseem ceeb ntawm 304 stainless hlau tuab-walled yeeb muaj teev nyob rau hauv lub rooj. Tom qab normalizing thiab tempering, tuab-walled stainless hlau kav tuaj yeem tau txais cov khoom siv zoo txhua yam. Txawm li cas los xij, yog tias qhov ntsuas kub ib txwm yog qis dua 930, lub zog tseem tsawg. Qhov kub tsis zoo li qub yog siab dua 1000, lub zog nce ntxiv, thiab lub tawv pib txo. Thaum lub sijhawm ntsuas qhov kub siab tshaj li 700, lub zog ntawm cov yeeb nkab steel yuav raug txo kom ntau, tab sis cov tawv tawv yuav tsis zoo dua. Yog li ntawd, kev pom zoo rau kev kho cua sov rau 304 stainless hlau tuab-walled yeeb nkab muaj raws li nram no:
Ua kom tsis tu ncua: kev tiv thaiv kub ntawm 950-980 rau 1.5-2 feeb / hli;
Tempering: 600-650 rwb thaiv tsev li 5-7 feeb / hli
Cov yam ntxwv ua rau tuab-walled stainless hlau cov kav dej sib txawv nrog kev kho cua sov sib txawv (suav nrog kev ua haujlwm zoo li qub, ua haujlwm tsis tu ncua thiab ntsuas kub, rov ua kom sov thiab ua kom sov thiab kub tawm, thiab lwm yam) tau teev nyob hauv lub rooj. )). Cov khoom siv hluav taws xob qis-kub, nruab nrab thiab kub-kub ntawm qhov sib txawv ntawm cov kav dej muaj hlau pom tias 304 stainless hlau tuab-phab ntsa ua yeeb nkab tom qab kev kho cua sov muaj cov khoom nruab nrab zoo thiab tsis tshua muaj kub. Los ntawm kev cuam tshuam kev ntsuas ntawm Mei' s (U-zoo li tus nqis siab tshaj), ductile-brittle hloov qhov kub ntawm Wenzhou stainless hlau raj yog li -400. Lub zog tam sim tsis muaj ntau tsis hloov qis dua li 400. Yog li no, cov hlau no yog hlau zoo tshaj plaws nrog lub zog siab dua rau cov hlab siab tam sim no. Cov qauv ntawm qhov kub-dov 304 stainless hlau tuab-walled raj yog pearlite, muaj ib qho me me ntawm sorbite thiab ib qho me me ntawm ferrite. Lub 950 normalizing thiab 650 tempering ntawm sorbite tsim ib qho me me ntawm pearlite thiab ferrite, thiab sorbite kaum 950 dej quenching thiab 650 tempering tsim me me ferrite.
