Txheej txheem cej luam
ASTM A106 yog ib qho kev qhia tshwj xeeb rauseamless carbon steel yeeb nkabtsim los rau siab -kev pabcuam kub. Nws yog ib qho ntawm cov khoom siv feem ntau siv cov kav dej rau cov ntawv thov cuam tshuam nrog kev thauj cov kua thiab cov pa roj ntawm qhov kub thiab txias.
Qhov kev xaiv "Qib B" qhia txog cov tshuaj muaj pes tsawg leeg thiab cov cuab yeej cuab tam, ua rau nws muaj zog dua qib A thiab ntau dua li Qib C rau kev pabcuam dav dav.
Cov yam ntxwv tseem ceeb
Hom:Seamless (Tsis muaj welded seam, ua rau nws muaj zog thiab txhim khu kev qha rau kev kub siab).
Kev Pabcuam:Feem ntau rau siab -kev pabcuam kub.
Qhov ntau thiab tsawg:Muaj nyob rau hauv ntau qhov ntau thiab tsawg, los ntawm NPS 1/8 "rau NPS 48" (thiab loj dua rau qee lub tuam txhab).
Daim ntawv:Muab nyob rau hauv random lengths (feem ntau 20-24 ft) los yog raws li txiav lengths.
Tshuaj muaj pes tsawg leeg
Cov tshuaj muaj pes tsawg leeg (los ntawm kev tsom xam thaum tshav kub kub) yog qhov tseem ceeb ntawm qhov sib txawv ntawm cov qib. Qib B muaj cov ntsiab lus carbon thiab manganese ntau dua li Qib A, ua rau nws muaj zog dua.
| Lub ntsiab | Kev sib xyaw, % (Qib B) |
|---|---|
| Cov pa roj carbon (C) | 0.30 max |
| Manganese (Mn) | 0.29 - 1.06 |
| Phosphorus (P) | 0.035 max |
| Sulfur (S) | 0.035 max |
| Silicon (Si) | 0.10 min |
| Copper (Cu) * | 0.40 max |
| Nickel (Ni) * | 0.40 max |
| Chromium (Cr) * | 0.40 max |
| Molybdenum (Mo) * | 0.15 max |
| Vanadium (V) * | 0.08 max |
Nco tseg:Cov txiaj ntsig ntawm tooj liab, Nickel, Chromium, Molybdenum, thiab Vanadium yuav tsum tsis pub tshaj 1.00%.
Mechanical Properties
Cov khoom no txhais cov yeeb nkab lub zog thiab muaj peev xwm tiv taus siab.
| Khoom | Yuav tsum muaj (Qib B) |
|---|---|
| Tensile zog | 60,000 psi (415 MPa) min |
| Yield zog | 35,000 psi (240 MPa) min |
| Elongation | Nws txawv nrog phab ntsa tuab, tab sis qhov tsawg kawg nkaus tau teev tseg (piv txwv li, 22% ntawm tus qauv 2-nti). |
Kev sib piv ntawm A106 Qib
Cov lus no pab qhia meej tias vim li cas Qib B yog qhov kev xaiv nrov tshaj plaws.
| Khoom | Qib A | Qib B | Qib C |
|---|---|---|---|
| Tensile zog (min) | 48,000 psi | 60,000 psi | 70,000 psi |
| Yield zog (min) | 30,000 psi | 35,000 psi | 40,000 psi |
| Cov pa roj carbon (max) | 0.25% | 0.30% | 0.35% |
| Manganese | 0.27-0.93% | 0.29-1.06% | 0.29-1.06% |
| Kev siv yam | Tsawg- cov ntawv thov kev nyuaj siab | General High -Temp/Pressure | Kev siv kev ntxhov siab ntau dua |
Vim li cas Qib B thiaj li nrov:Nws muaj qhov sib npaug zoo ntawm lub zog, ductility, thiab weldability, ua tau raws li qhov yuav tsum tau ua rau feem ntau ntawm cov ntawv thov kev lag luam yam tsis muaj tus nqi hwm ntawm Qib C.
Cov ntawv thov siv
ASTM A106 Qib B kav yog cov neeg ua haujlwm ntawm ntau lub lag luam:
Kev tsim hluav taws xob:Boiler tube, superheaters, thiab cov kav dej tseem ceeb.
Roj & Roj Refining:Cov txheej txheem piping, refinery pipelines, thiab cov kev pabcuam hydrocarbon.
Petrochemical cog:Kev thauj cov kua thiab cov pa roj.
Cov nroj tsuag muaj:Rau chav dej, condensate, thiab siab - cov kab dej kub.
Txheem thiab Specifications kom paub
ASTM A106 Cov Lus Qhia:Base khoom specification.
ASME B36.10M:Npog cov qauv ntawm qhov ntev (sab nraud txoj kab uas hla, phab ntsa thickness teem sij hawm).
ASME SA-106:Qhov no yog ASME Boiler thiab Pressure Vessel Code version ntawm ASTM A106, uas yuav tsum tau rau siab -muaj cov ntawv thov.
Kev txiav txim siab tseem ceeb
Kub txwv:Thaum tsim los rau qhov kub thiab txias, nws lub zog txo qis thaum kub nce. Nco ntsoov sab laj nrog cov cai (xws li ASME B31.1 lossis B31.3) rau qhov kev ntxhov siab siab tshaj plaws ntawm koj qhov ntsuas kub tsim.
Tsawg- Kev Pabcuam Kub:A106 Qib B yogtsis yoghaum rau qis- kub (sub-zero) kev pabcuam thaum nws ua nkig. Rau cov ntawv thov no, cov ntaub ntawv zoo li ASTM A333 Qib 6 yog siv.
Corrosion Resistance:Raws li cov pa roj carbon steel, nws muaj kev tiv thaiv corrosion tsis zoo. Rau corrosive ib puag ncig, nws yuav tsum tau clad, coated, los yog hloov nrog ib tug stainless hlau (xws li, ASTM A312) los yog ib tug hlau alloy.
Welding thiab Fabrication:Nws feem ntau suav hais tias muaj qhov zoo weldability. Cov txheej txheem vuam txheej txheem rau carbon steel (xws li, siv E7018 electrodes) feem ntau yog siv.
Cov ntsiab lus
ASTM A106 Qib Byog ntau yam, siab - zog, seamless carbon steel yeeb nkab, tshwj xeeb engineered rau siab - kub thiab siab - kev siv siab. Nws qhov sib npaug zoo heev ntawm cov khoom, muaj, thiab tus nqi-kev ua tau zoo ua rau nws qhov kev xaiv zoo tshaj plaws rau cov kav dej tseem ceeb hauv cov chaw tsim hluav taws xob, cov chaw tsim khoom, thiab lwm yam kev lag luam thoob ntiaj teb.
