Cov yeeb nkab hlau tsis sib xyaw seamlessASTM A335 P11yog cov khoom siv hlau chromium-molybdenum alloy, thiab nws lub npe Suav sib xws yog15CrMoGCov khoom siv no muaj lub zog kub thiab tiv taus kev nkag, thiab tsim nyog rau kev ua haujlwm kub thiab siab. Nws yog siv dav hauv kev lag luam xws li lub zog thiab lub zog fais fab, thiab petrochemicals.
Hais txog cov tshuaj lom neeg sib xyaw, cov khoom siv P11 muaj kwv yees li 1.00% - 1.50% chromium thiab 0.44% - 0.65% molybdenum. Cov kev sib xyaw ua ke no ua rau nws tswj tau cov khoom siv kho tshuab ruaj khov hauv qab qhov kub siab. Cov khoom chromium pab tsim cov txheej oxide ntom ntom, txhim kho cov khoom siv tiv thaiv kev oxidation thiab kev tiv thaiv corrosion, thaum cov khoom molybdenum txhim kho cov khoom siv lub zog kub siab thiab kev tiv thaiv nkag.
Hauv kev lag luam fais fab thiab fais fab, ASTM A335 P11 cov kav hlau tsis muaj qhov sib txuas feem ntau yog siv rau hauv cov kav dej kub thiab siab ntawm cov chaw tsim hluav taws xob thermal. Lawv feem ntau siv los tsim cov khoom tseem ceeb xws li boiler superheaters, reheaters, thiab cov kav dej loj. Cov khoom no feem ntau yuav tsum ua haujlwm tau ntev hauv qhov chaw kub siab txij li 540 ° C txog 570 ° C. Cov khoom no tuaj yeem tiv taus qhov siab sab hauv thiab tiv taus oxidation corrosion los ntawm cov pa kub siab, ua kom muaj kev nyab xeeb thiab ruaj khov ntawm cov chaw tsim hluav taws xob.
Hauv kev lag luam petrochemical, P11 cov kav hlau siv dav hauv ntau yam khoom siv ua haujlwm kub siab. Lawv feem ntau siv los tsim cov raj cua sov tawg, cov raj cua sov hloov pauv, thiab cov raj xa dej hydrogenation, thiab lwm yam. Cov kav dej no yuav tsum tiv taus cov teebmeem ntawm cov xov xwm hydrocarbon kub siab. Lub zog kub siab zoo heev thiab kev tiv thaiv corrosion ntawm cov khoom siv ua rau nws hloov kho rau cov xwm txheej xav tau ntawm kev tsim khoom petrochemical, kom ntseeg tau tias kev ua haujlwm ruaj khov ntev ntawm cov khoom siv.
Hauv kev lag luam fais fab nuclear, cov kav hlau P11 feem ntau yog siv rau hauv cov kav dej pabcuam. Txawm hais tias cov kav dej nuclear feem ntau siv cov khoom siv qib siab dua, P11 tseem siv tau rau hauv cov kab ke pabcuam uas tsis yog nuclear, xws li cov tshuab pauv cua sov thiab cov tshuab xa dej, uas muab kev txhawb nqa rau kev ua haujlwm ntawm cov chaw tsim hluav taws xob nuclear.
Thaum lub sijhawm ua thiab tsim cov khoom siv no, yuav tsum tau ua tib zoo saib xyuas cov txheej txheem vuam. Ua ntej vuam, yuav tsum tau ua kom sov li ntawm 200-250 ° C ua ntej. Yuav tsum siv cov electrodes uas muaj hydrogen tsawg, thiab yuav tsum tau kho cua sov tam sim ntawd ntawm 680-720 ° C tom qab vuam. Cov kev ntsuas no tuaj yeem tshem tawm kev ntxhov siab ntawm kev vuam, txhim kho cov qauv vuam, thiab tiv thaiv kev tsim cov kab nrib pleb txias. Thaum lub sijhawm teeb tsa cov kav dej, kev txhawb nqa thiab kev teeb tsa dai kom zoo yog qhov tsim nyog los xyuas kom meej tias cov kav dej tuaj yeem nthuav dav thiab zam kev tsim cov kev ntxhov siab thermal ntxiv.
Nrog rau kev txhim kho ntawm kev lag luam fais fab, qhov kev thov rau cov kav dej kub thiab siab siab txuas ntxiv mus ntxiv. ASTM A335 P11, ua cov khoom siv kav dej kub nruab nrab uas laus thiab txhim khu kev qha, tseem yuav ua lub luag haujlwm tseem ceeb hauv kev saib xyuas thiab kho dua tshiab ntawm cov khoom siv uas twb muaj lawm. Los ntawm kev ua kom zoo dua ntawm kev tsim cov khoom sib xyaw thiab cov txheej txheem tsim khoom, kev ua tau zoo ntawm cov khoom siv no yuav raug txhim kho ntxiv, muab kev txhawb nqa zoo dua rau kev txhim kho ntawm ntau qhov chaw lag luam.
ASTM A335 P11 seamless alloy steel yeeb nkab, vim lawv qhov kev ua tau zoo heev ntawm qhov kub thiab txias thiab tus nqi pheej yig, tswj tau qhov tseem ceeb ntawm daim ntawv thov hauv kev lag luam ntawm lub zog thiab kev tsim kho tshuaj lom neeg. Txhawm rau xaiv thiab siv cov khoom siv no kom raug, kev nkag siab thiab kev nkag siab txog nws cov yam ntxwv kev ua tau zoo thiab cov kev xav tau ntawm daim ntawv thov yog qhov tsim nyog.