ASTM B474 EFW Pipe yog dab tsi?
ASTM B 474 Cov khoom sivyog tus qauv qhia tshwj xeeb rau hluav taws xob- fusion-welded (EFW) npib tsib xee thiab npib tsib xee-cobalt alloy yeeb nkab.ASME SB 474 EFW kavtau muab faib ua tsib pawg raws li txoj kev vuam, xws li Chav Kawm 1, Chav Kawm 2, Chav Kawm 3, Chav Kawm 4, thiab Chav Kawm 5. Nws suav nrog cov kev xav tau rau cov kav dej hauv qhov ntau thiab tsawg los ntawm NPS 3/4 txog NPS 30, suav nrogTeem caij 5S, 10S, 40S,thiab 80S. Cov khoom siv yeeb nkab tuaj yeem muab faib ua ntau qib, suav nrogASTM B474 UNS N02200 Yeeb Nkab, Qib UNS N06002, UNS N06030, UNS N06035, UNS N06200, thiab lwm yam.
Nkag siab txog 5 Chav Kawm ntawm ASTM B474 EFW Pipe
Thaum muab ASME SB474 welded yeeb nkab, chav kawm vuam dictates cov fabrication thiab tsis yog -kev kuaj puas tsuaj (NDT). Peb tsim tag nrho tsib chav kawm txuj ci kom ua tau raws li koj qhov tshwj xeeb siab thiab kev pabcuam txwv:
Chav Kawm 1: Ob npaug -welded siv cov hlau muab tub lim hauv txhua qhov kev hla. Yuav tsum ua kom tiav cov duab hluav taws xob sib koom ua ke (100 feem pua X-ray) ntawm tag nrho cov welds.
Chav Kawm 2: Muab ob npaug rau-welded siv cov hlau muab tub lim hauv txhua qhov hla. Tsis tas yuav radiography tshwj tsis yog tau teev tseg.
Chav Kawm 3: Ib leeg-welded siv cov hlau muab tub lim hauv txhua qhov kev hla. Lub hauv paus vuam yuav tsum tau nkag mus rau hauv tag nrho, thiab cov yeeb nkab yuav tsum tau 100 feem pua ntawm kev sib koom ua ke radiography.
Chav Kawm 4: Zoo ib yam li Chav Kawm 3, tab sis tsis muaj kev sib koom ua ke.
Chav Kawm 5: Muab ob npaug rau-welded siv cov hlau muab tub lim hauv txhua qhov kev hla. Spot radiography yog ua los xyuas qhov zoo ntawm vuam.
Peb muab cov nominal qhov ntau thiab tsawg xws li NPS 3/4 txog NPS 30, nrog rau cov sij hawm tuab xws li Teem caij 5S, 10S, 40S, thiab 80S los ua ntau yam qauv thiab hydraulic.
Tshuaj muaj pes tsawg leeg
1. Kev soj ntsuam cov khoom ntawm cov phaj-Cov chaw tsim cov yeeb nkab yuav tsum ua ib qho kev soj ntsuam ntawm txhua lub zeb kub ntawm cov khoom siv phaj. Kev soj ntsuam cov khoom lag luam thiaj li txiav txim siab yuav tsum ua kom tau raws li qhov yuav tsum tau ua ntawm cov phaj specification uas cov khoom raug txiav txim.
2. Kev soj ntsuam cov khoom ntawm Weld-Cov chaw tsim khoom ntawm cov yeeb nkab yuav tsum ua ib qho kev soj ntsuam ntawm cov khoom siv vuam tiav los ntawm txhua cov yeeb nkab. Cov tshuaj muaj pes tsawg leeg ntawm weld deposit yuav tsum poob nyob rau hauv cov tshuaj muaj pes tsawg leeg txwv tsis pub siv AWS muab tub lim hlau specification rau cov qib sib xws uas muaj nyob rau hauv Table 1 (los yog siab dua alloyed muab tub lim hlau thaum pom zoo los ntawm tus neeg yuav khoom). los yog yuav tsum, raws li kev pom zoo ntawm tus neeg yuav khoom, yog cov hlau muab tub lim ntau dua li cov hlau puag thaum xav tau rau kev tiv thaiv corrosion lossis lwm yam khoom. Cov kev ntsuam xyuas sib xyaw sib txawv ntawm Table 1 txwv, uas yog tshwm sim los ntawm dilution ntawm cov hlau vuam nrog lub hauv paus hlau, yuav tsum tau pom zoo los ntawm cov neeg yuav khoom thiab cov chaw tsim khoom.
ASTM B474 EFW Yeeb Nkab thiab Weld Filler Materials
| Alloy | UNS Lub npe |
ASTM Phaj Specification |
AWS A5.11 | AWS A5.9 | AWS A5.14 | |||
| Chav kawm | UNS | Chav kawm | UNS | Chav kawm | UNS | |||
| 200 | N02200 | B162 | ENi-1 | W82141 | ... | ... | ERNi-1 | N02061 |
| 201 | N02201 | B162 | ... | ... | ... | ... | ... | ... |
| 400 | N04400 | B127 | ENiCu-7 | W84190 | ... | ... | ERNiCu-7 | N04060 |
| X | N06002 | B435 | ENiCrMo-2 | W86002 | ... | ... | ERNiCrMo-2 | N06002 |
| C22B | N06022 | B575 | ENiCrMo-10 | W86022 | ... | ... | ERNiCrMo-10 | N06022 |
| C2000B | N06200 | B575 | ENiCrMo-17C | W86200C | ... | ... | ERNiCrMo-17C | N06200C |
| C30B | N06030 | B582 | ENiCrMo-11 | W86030 | ... | ... | ERNiCrMo-11 | N06030 |
| 230B | N06230 | B435 | ENiCrWMo-1C | W86231C | ... | ... | ERNiCrWMo-1 | N06231 |
| 600 | N06600 | B168 | N/AD | ... | ... | ... | ERNiCr-3 | N06082 |
| 601 | N06601 | B168 | E | ... | ... | ... | E | |
| 625 | N06625 | B443 | ENiCrMo-3 | W86112 | ... | ... | ERNiCrMo-3 | N06625 |
| G3 | N06985 | B582 | ENiCrMo-9 | W86985 | ... | ... | ERNiCrMo-9 | N06985 |
| 20 IB | N08020 | B463 | ... | ... | TIAB SA 320 | N08021 | ... | ... |
| ... | ... | ... | ... | ... | ER 320 LR | N08022 | ... | ... |
| Cr-Ni-Fe-Mo-Cu | N08024 | B463 | N/AD | ... | ... | ... | ... | ... |
| 20 hmo 6F | N08026 | B463 | ENiCrMo-3 | W86112 | ... | ... | ERNiCrMo-3 | N06625 |
| 825 | N08825 | B424 | ENiCrMo-3G | W86112 | ... | ... | ERNiCrMo-3G | N06625 |
| C276 | N10276 | B575 | ENiCrMo-4 | W80276 | ... | ... | ERNiCrMo-4 | N10276 |
| B2 | N10665 | B333 | ENiMo-7 | W80665 | ... | ... | ERNiMo-7 | N10665 |
| B3B | N10675 | B333 | ENiMo-10 | W80875 | ... | ... | ERNiMo-10 | N10675 |
AKev tsim kho tshiab tau tsim los ua raws li ASTM E527 thiab SAE J 1086, Xyaum rau Numbering Metals thiab Alloys (UNS).
BSau npe Trademark ntawm Haynes International.
CPom zoo los ntawm AWS tab sis tsis luam tawm."
DTsis muaj AWS kev faib tawm muaj nyob rau lub sijhawm sau ntawv no -nrog rau cov chaw tsim khoom kom pom zoo fller hlau.
EFiller hlau siv yog nyob ntawm qhov ntsuas kub ntawm qhov kev pab cuam -nrog rau cov chaw tsim khoom siv rau cov khoom siv hlau tshwj xeeb rau qhov kawg siv kub.
FSau npe Trademark of Carpenter Steel."
GPom zoo muab tub lim hlau- cov khoom siv no yog nyob ntawm qhov kev pab cuam kub siab rau qhov zoo tshaj plaws filler hlau xaiv- nrog rau cov chaw tsim khoom siv rau cov khoom siv hlau tshwj xeeb muab qhov kawg siv kub. "
Rigorous Quality Control thiab Test Standards
Txhawm rau kom ntseeg tau tias txhua qhov ASTM B474 yeeb nkab ua tau raws li cov qauv kev lag luam thoob ntiaj teb nruj, peb ua cov kev ntsuas tsis zoo -kev puas tsuaj thiab kev ntsuas tshuab:
- Radiographic Examination:Tag Nrho X-Ray testing longitudinal weld kab kom paub meej 100 feem pua kev sib koom ua ke (tus qauv rau Chav Kawm 1 thiab Chav Kawm 3).
- Kev Ntsuas Hydrostatic:Txhua ntu cov yeeb nkab yog siab- kuaj xyuas kom paub tseeb tias muaj xoom xaim txoj hauv kev lossis micro- tawg ntawm cov welded seam.
- Weld Khoov & Tension Testing:Transverse nro thiab khoov cov kev ntsuam xyuas paub meej tias cov welded sib koom ua pov thawj sib npaug cov khoom siv rau lub hauv paus hlau.
- Dimensions thiab Tolerances:Sab nraud txoj kab uas hla, phab ntsa thickness, thiab tawm - ntawm - roundness yog nruj me ntsis ntsuas siv precision calibrated instruments.
ASTM B474 Welded Yeeb Nkab Chaw tsim tshuaj paus
Raws li ib qho kev paub txog thoob ntiaj teb cov khoom siv xa khoom xa tawm, peb muab cov ntaub ntawv ua tiav, EN 10204 3.1 daim ntawv pov thawj zeb xeem, thiab cov khoom siv piping spool ua ntej-fabrication cov kev pabcuam. Txawm hais tias koj xav tau qhov ntau thiab tsawg lossis kev cai hnyav-fab phab ntsa teeb tsa, peb xa ncaj qha -lub Hoobkas kev daws teeb meem nrog lub sijhawm sib tw.
Tiv tauj peb hnub no nrog koj cov qib yeeb nkab tshwj xeeb, chav kawm, qhov loj me, thiab lub sijhawm xav tau. Peb pab neeg ua haujlwm engineering tau npaj los muab cov lus qhia ceev ceev thiab raug.
