Dab tsi welding pas nrig rau ASME SA387 Qib 5 Chav Kawm 2?
Rau ASME Qib 5 Chav Kawm 2 cov ntaub ntawv (Chromium-Molybdenum steels zoo li P5C), koj xav tau qis- alloy electrode sib piv cov hlau lub zog thiab chemistry, feem ntau ib qhoE7018-1 (low-hydrogen, low-alloy for P5)) los yog sib piv low-alloy SMAW electrode (AWS A5.18/A5.5), kom ntseeg tau tias nws tau muab cais rau P5 cov ntaub ntawv thiab muaj lub zog tensile tsim nyog, muaj peev xwm xav tau kev tshaj tawm -weld heat treatment (PWHT) rau cov ntawv thov tseem ceeb, ib txwm txheeb xyuas nrog koj cov txheej txheem vuam specification (WPS).
ASME SA387 Qib 5 Chav Kawm 2yog ib lub siab -zoo chromium-molybdenum alloy steel phaj tshwj xeeb tsim los siv rau hauv cov hlab ntsha uas muaj zog thiab cov boilers muaj kev ua haujlwm ntawm qhov kub siab. Qib no muaj ib qho tseem ceeb ntawm Chromium (4.00% rau 6.00%thiab Molybdenum (0.45% rau 0.65%), uas muab kev tiv thaiv tshwj xeeb rau oxidation thiab corrosion, nrog rau siab - kub tensile zog. Nws yog cov khoom siv hauv cov roj, roj, thiab petrochemical kev lag luam rau cov ntawv thov uas cuam tshuam nrog "kev pabcuam qaub" thiab siab - qhov chaw sov.
Hauv ASME SA387 specification,Chav kawm 2sawv cev rau qib siab dua -lub zog ntawm qib, feem ntau ua tiav los ntawm cov txheej txheem kev kho cua sov zoo li qub thiab tempered. Piv nrog rau Chav Kawm 1, nws muaj cov khoom siv zoo tshaj plaws, suav nrog lub zog tensile ntau ntawm515 rau 690 MPa(75 mus rau 100 ksi) thiab qhov tsawg kawg nkaus yield zog ntawm310 MPa(45 hli). Qhov kev sib xyaw ua ke ntawm lub zog muaj zog thiab kev ua haujlwm kub zoo ua rau nws muaj ntau yam kev daws teeb meem rau kev tsim cov loj- nplai reactors thiab cov khoom siv hluav taws xob uas yuav tsum tiv taus qhov kub ntxhov siab heev.
ASME Qib 5 Chav Kawm 2Phaj Specification
Qib: ASTM A387 Gr 5 CL.2 Alloy Steel Phaj
Txuj: ASTM A387 / ASME SA387
Dav: 1000mm-4500mm
Thickness: 5mm-150mm
Ntev: 3000mm-18000mm
Kev ntsuas kub: -52 ° C
Txheej txheem: Kub-Rolled (HR)
Daim ntawv thov:Cov hlab ntsha siab, boilers, thiab cov khoom lag luam ua haujlwm ntawm qhov kub thiab txias.
Dab tsi yuav tsum tau ceev faj thaum vuam ASME Qib 5 Chav Kawm 2?
Ua ntej preheating (feem ntau300 ° F - 500 ° F) tiv thaiv hydrogen-induced cracking. Ncej -Weld Heat Treatment (PWHT) feem ntau yuav tsum tau ua (feem ntau1275 ° F - 1400 ° F) kom rov qab ductility thiab tswj hardness. Kev ua pa kom raug thiab PPE kuj yuav tsum tau ua.
Dab tsi yog Cov Kev Xeem Xeem rau ASME Qib 5 Chav Kawm 2?
Cov kev xav tau muaj xws li tshuaj lom neeg cov khoom siv hluav taws xob / cov khoom siv tshuaj ntsuam xyuas thiab kev ntsuas nruj rau cov neeg kho tshuab lub zog. Kev ntsuam xyuas ntxiv tuaj yeem suav nrog Charpy V-kev ntsuas qhov cuam tshuam, siab- ntsuas qhov kub thiab txias, thiab tsis yog- kuaj kev puas tsuaj (NDE) zoo li Ultrasonic lossis Magnetic Particle kuaj.
Dab tsi welding pas nrig rau ASME Qib 5 Chav Kawm 2? (Lwm yam specification)
Koj xav tau ib qho qis- alloy electrode sib piv rau lub hauv paus hlau lub zog thiab chemistry, xws li Chromoly electrode (E8018-B6). Nws yuav tsum tau muab cais rau P5B cov ntaub ntawv thiab feem ntau xav tau PWHT kom ntseeg tau tias kev sib koom ua ke hauv kev siv lub nkoj siab
ASTM A387 GR 5 CLASS 2 Cov tshuaj muaj pes tsawg leeg
| Qib | C | Mn | P | S | Si | Cr | Mo |
|---|---|---|---|---|---|---|---|
| A387 Gr.5 | 0.05-0.21 | 0.55-0.80 | 0.025 | 0.025 | 0.15-0.40 | 0.50-0.80 | 0.45-0.60 |
Mechanical Properties ntawm ASTM A387 GR 5 CLASS 2 Phaj
| Tensile zog | Yield zog | Elongation hauv 50mm (%) | Txo thaj tsam hauv% |
| 75-100 ksi, 515-690 MPa | 45 Ksi, 310 MPa | 18 | 45 |
Qib sib npaug ntawm ASME SA387 Qib 5 Alloy Steel Phaj Chav Kawm 2 Phaj
| Lub teb chaws | Teb chaws USA | Teb chaws Europe | Lub teb chaws Yelemees | ENGLAND | FRANCE | RUSSIA |
|---|---|---|---|---|---|---|
| STANDARDS | ASTM | TS EN 10028 | DIN | BS | TIAB SA 36206 | GOST |
| Qib 5 | A387 | X12CrMo5 | - | - | - | 15 KH5M |
1 Qhov txawv ntawm ASME Qib 5 Chav Kawm 2 thiab ASME Qib 5 Chav Kawm 1 yog dab tsi?
ASME Qib 5 Chav Kawm 1 vs. Chav Kawm 2 feem ntau sib txawv hauv lawv cov khoom siv kho tshuab, nrog rau Chav Kawm 2 cov ntaub ntawv feem ntau muab lub zog tensile ntau dua thiab lub zog tawm los, txhais tau tias lawv muaj zog dua thiab muaj peev xwm ua tau raws li qhov xav tau ntau dua li Chav Kawm 1. Rau ASTM A387 Qib 5, Chav Kawm 2 muaj zog ntau dua (piv txwv li, 75-1010 ksi piv rau Class 5 (xws li, 75-1010) ksi. ksi tensile).
2 Dab tsi yog daim ntawv thov kev ua haujlwm ntawm ASME Qib 5 Chav Kawm 2?
ASME Qib 5 Chav Kawm 2 feem ntau yog siv rau cov hlab ntsha siab, boilers, hloov hluav taws xob, thiab cov kav dej hauv cov roj, roj, thiab kev lag luam petrochemical. Nws muaj kev txhim kho lub zog thiab kev tiv thaiv corrosion rau qhov xav tau, siab - qhov kub thiab txias, thiab qhov kev pabcuam qaub vim nws cov ntsiab lus chromium thiab molybdenum.
3 Tus lej P ntawm ASME Qib 5 Chav Kawm 2 yog dab tsi?
Hauv ASME Tshooj IX, SA-387 Qib 5 (uas suav nrog Chav Kawm 2) raug xaivP-Number 5B, Pawg 1. Cov P-Numbers pab pawg cov ntaub ntawv nrog cov yam ntxwv zoo sib xws.
4 Dab tsi yog qhov zoo ntawm ASME Qib 5 Chav Kawm 2?
ASME Qib 5 Chav Kawm 2 muaj cov txiaj ntsig zoo li kev tiv thaiv corrosion zoo tshaj (vim yog 4.00–6.00% chromium) thiab siab - kub lub zog (los ntawm molybdenum), zoo heev ductility, thiab toughness. Nws yog qhov zoo tagnrho rau cov ntawv thov uas tiv taus siab -kub oxidation thiab sulfur corrosion yog qhov tseem ceeb.
5 Qhov kub thiab txias yog ASME Qib 5 Chav Kawm 2?
Nws hais txog cov khoom siv thiab kev kho mob kub. Qhov tsawg kawg nkaus tempering kub yog1150 ° F (620 ° F). Kev pabcuam kub feem ntau txuas mus txog1000℃F (538 degree) txog 1200℃F (649 degree)nyob ntawm qhov ntsuas siab.
6 Tus nqi siab tshaj plaws uas tso cai rau ASME Qib 5 Chav Kawm 2 yog dab tsi?
Txiav txim siab los ntawm ASME BPVC Tshooj II, Ntu D. Nyob rau hauv chav tsev kub, qhov siab tshaj plaws kev ntxhov siab yog kwv yees li21.4 ksi (148 MPa)rau Tshooj VIII, Div. 1. Tus nqi no txo qis thaum kub nce (piv txwv li, nyob ib ncig ntawm 5.5–6.0 ksi ntawm 1000℃F).
7 Dab tsi welding pas nrig rau ASME Qib 5 Chav Kawm 2?
Rau SMAW, siv qis-hydrogen, qis- alloy electrodes nyiamE8018-B6los yogE8018-B6L, uas phim 5% Cr - 0.5% Mo chemistry. Rau TIG vuam,ER80S-B6filler hlau yog tus qauv.
Yog xav paub ntxiv txogASME Qib 5 Chav Kawm 2GNEE cov khoom, koj tuaj yeem xa email rau info@gneesteels.com. Peb zoo siab tshaj los pab koj.
