Cov Yeeb Nkab Hlau Welded Rau Lub Zog Thiab Kev Ua Haujlwm Zoo Tshaj Plaws ASTM A252
Taw qhia:
Thaum nws los txog rau kev tsim kho vaj tse, cov kav dej yog ib qho tseem ceeb uas ua lub luag haujlwm tseem ceeb hauv ntau yam lag luam. Kev siv cov ntaub ntawv thiab cov txheej txheem zoo hauv kev tsim cov kav dej ua kom muaj kev ruaj khov, lub zog thiab kev ntseeg tau, thiabCov yeeb nkab hlau sib txuas ASTM A252yog nyob rau pem hauv ntej ntawm kev nce qib thev naus laus zis no. Hauv tsab blog no, peb yuav saib ze dua txog cov yam ntxwv zoo thiab cov txiaj ntsig ntawm cov kav dej zoo kawg no uas tau dhau los ua ib qho tseem ceeb hauv cov haujlwm tsim kho niaj hnub no.
Cov Khoom Siv Kho Tshuab ntawm SSAW Yeeb Nkab
| qib hlau | lub zog tsawg kawg nkaus | tsawg kawg nkaus Tensile zog | Qhov Ntev Tsawg Kawg Nkaus |
| B | 245 | 415 | 23 |
| X42 | 290 | 415 | 23 |
| X46 | 320 | 435 | 22 |
| X52 | 360 | 460 | 21 |
| X56 | 390 | 490 | 19 |
| X60 | 415 | 520 | 18 |
| X65 | 450 | 535 | 18 |
| X70 | 485 | 570 | 17 |
Cov Tshuaj Lom Zem ntawm Cov Kav Dej SSAW
| qib hlau | C | Mn | P | S | V+Nb+Ti |
| Qhov siab tshaj plaws % | Qhov siab tshaj plaws % | Qhov siab tshaj plaws % | Qhov siab tshaj plaws % | Qhov siab tshaj plaws % | |
| B | 0.26 | 1.2 | 0.03 | 0.03 | 0.15 |
| X42 | 0.26 | 1.3 | 0.03 | 0.03 | 0.15 |
| X46 | 0.26 | 1.4 | 0.03 | 0.03 | 0.15 |
| X52 | 0.26 | 1.4 | 0.03 | 0.03 | 0.15 |
| X56 | 0.26 | 1.4 | 0.03 | 0.03 | 0.15 |
| X60 | 0.26 | 1.4 | 0.03 | 0.03 | 0.15 |
| X65 | 0.26 | 1.45 | 0.03 | 0.03 | 0.15 |
| X70 | 0.26 | 1.65 | 0.03 | 0.03 | 0.15 |
Qhov Geometric Tolerance ntawm SSAW Pipes
| Kev kam rau siab ntawm geometric | ||||||||||
| sab nraud txoj kab uas hla | Phab ntsa tuab | kev ncaj ncees | tsis sib npaug | pawg neeg | Qhov siab tshaj plaws ntawm cov hlaws weld | |||||
| D | T | |||||||||
| ≤1422 hli | > 1422 hli | <15 hli | ≥15 hli | qhov kawg ntawm cov yeeb nkab 1.5m | ntev tag nrho | lub cev yeeb nkab | qhov kawg ntawm cov yeeb nkab | T≤13 hli | T> 13 hli | |
| ±0.5% | raws li tau pom zoo | ±10% | ±1.5 hli | 3.2 hli | 0.2% L | 0.020D | 0.015D | +10% | 3.5 hli | 4.8 hli |
Kev Ntsuas Hydrostatic
Lub Zog thiab Kev Ruaj Ntseg Tsis Muaj Qhov Sib Piv:
ASTM A252kauv welded hlau yeeb nkabyog ua los ntawm cov hlau zoo uas ua tau raws li ASTM A252 tus qauv. Tus qauv no lav qhov muaj zog thiab ruaj khov ntawm cov kav dej, ua rau lawv haum rau ntau yam kev siv xws li kev xa roj thiab roj av, kev teeb tsa lub hauv paus thiab kev tsim kho dej. Cov vuam sib txuas ua rau cov kav dej muaj zog thiab tiv taus cov zog sab nraud, ua kom lawv tuaj yeem tiv taus qhov chaw muaj kev kub ntxhov siab thiab huab cua hnyav.
Kev ua haujlwm zoo tshaj plaws thiab kev siv nyiaj tsim nyog:
Ib qho ntawm cov txiaj ntsig tseem ceeb ntawm ASTM A252 kauv welded steel yeeb nkab yog nws qhov ua tau zoo tshaj plaws hauv kev teeb tsa thiab siv. Nws tus qauv kauv yooj yim rau kev thauj mus los thiab tuav vim nws qhov hnyav sib dua piv rau lwm cov yeeb nkab. Tsis tas li ntawd, qhov yooj ywm ntawm cov yeeb nkab no ua rau khoov tau yooj yim, txo qhov yuav tsum tau siv cov khoom sib txuas thiab cov pob qij txha. Qhov no tsis yog tsuas yog txuag lub sijhawm xwb, tab sis nws kuj tseem txo cov nqi teeb tsa, ua rau hom ductwork no yog qhov kev daws teeb meem pheej yig rau ntau yam haujlwm.
Kev tiv thaiv corrosion zoo dua:
Kev xeb yog ib qho teeb meem loj hauv cov kav dej, tshwj xeeb tshaj yog hauv cov lag luam uas tswj cov tshuaj lom neeg thiab cov tshuaj xeb. Tus qauv ASTM A252 ua kom ntseeg tau tias cov kav hlau vuam sib txuas ua rau muaj kev tiv thaiv xeb zoo heev. Cov kav dej no muaj cov txheej tiv thaiv xws li epoxy lossis zinc uas ua rau muaj kev cuam tshuam rau cov neeg ua haujlwm xeb, ua rau lawv lub neej ntev dua thiab txo cov nqi kho. Qhov tshwj xeeb no muaj txiaj ntsig zoo rau cov ntawv thov hauv av lossis ntug dej hiav txwv uas cov kav dej raug rau cov xwm txheej ib puag ncig hnyav.
Muaj peev xwm nqa tau ntau dua:
Lwm yam tseem ceeb ntawm ASTM A252 kauv welded steel yeeb nkab yog nws lub peev xwm zoo heev. Kev siv tshuab welding kauv siv rau hauv cov txheej txheem tsim khoom ua rau lub yeeb nkab muaj zog thiab muaj peev xwm tiv taus cov khoom hnyav. Txawm siv rau hauv kev tsim choj, lub hauv paus ntawm cov qauv lossis cov kav dej hauv av, cov yeeb nkab no muab kev ruaj khov zoo dua, txo qhov kev pheej hmoo ntawm kev ua tsis tiav thiab ua kom muaj kev nyab xeeb mus sij hawm ntev ntawm ntau yam haujlwm tsim kho vaj tse.
Kev ruaj khov ntawm ib puag ncig:
Nyob rau lub sijhawm uas kev tiv thaiv ib puag ncig yog qhov kev txhawj xeeb thoob ntiaj teb, kev xaiv cov khoom siv hauv tsev yog qhov tseem ceeb heev. Cov yeeb nkab hlau sib txuas ASTM A252 ua raws li cov kev coj ua hauv kev tsim kho kom ruaj khov vim nws lub zog thiab kev siv rov qab tau. Cov yeeb nkab muaj lub neej ua haujlwm ntev thiab tuaj yeem rov ua dua tshiab tau yooj yim thaum kawg ntawm lawv lub neej, txo qhov xav tau kev rho tawm cov khoom tshiab thaum txo cov khib nyiab thiab cov pa roj carbon.
Xaus lus:
Cov yeeb nkab hlau uas sib txuas ua ke ASTM A252 tau hloov pauv txoj kev lag luam yeeb nkab nrog nws lub zog zoo tshaj plaws, kev ruaj khov thiab kev siv nyiaj tsawg. Cov yeeb nkab no ua tau raws li lossis tshaj cov qauv kev lag luam, ua rau lawv yog thawj qhov kev xaiv hauv ntau yam kev lag luam. Nws lub peev xwm thauj khoom zoo heev thiab kev tiv thaiv xeb ua kom muaj kev txhim kho tas mus li ntawm cov haujlwm tsim kho vaj tse thiab pab txhawb rau kev nce qib ntawm kev lag luam thoob ntiaj teb. Los ntawm kev siv cov yeeb nkab no, cov haujlwm tsim kho tuaj yeem ua kom zoo dua qub, txo cov nqi thiab ua kom muaj kev ntseeg siab mus sij hawm ntev thaum ua raws li kev ruaj khov ntawm ib puag ncig.
