ASME SA387 Qib 11 Chav Kawm 2 yog dab tsi?
ASME SA387 Qib 11 Chav Kawm 2yog chromium-molybdenum steel rau siab- kub siab cov hlab ntsha, tsim nyog rau kev pab cuam nyob rau hauv thaj tsam ntawm 350℃mus rau 480℃(662℃F txog 900℃F), nrog rau nws tempering kub teev nyob rau hauv tsawg kawg yog 1150℃F (620 degree) thaum lub sij hawm tsim khoom. Nws muaj lub zog zoo dua li Chav Kawm 1 vim nws lub zog siab dua, ua rau nws zoo tagnrho rau kev thov kom nce siab -kev siv kub, tshwj xeeb tshaj yog nyob rau hauv cov roj thiab roj.
ASME SA387 Qib 11 yog qib kev qhia tshwj xeeb rau cov hlau tsis tshua muaj chromium-molybdenum steel nplooj, daim hlau, thiab cov khoom ua los ntawm cov ntawv hlau, npaj rau siv hauv kev tsim cov welded boilers thiab cov hlab ntsha siab uas tsim los rau kev pabcuam kub siab. Qhov kev qhia tshwj xeeb no feem ntau cuam tshuam nrog kev kub siab - daim ntawv thov kub rau cov hlab ntsha thiab cov khoom siv hluav taws xob hauv cov roj, roj, thiab hluav taws xob kev lag luam.
Cov khoom muaj zog thiab corrosion kuj vim nws 1-1.5% Chromium thiab kwv yees li 0.5% Molybdenum cov ntsiab lus. Cov ntsiab lus alloying no tso cai rau cov hlau kom tswj tau nws cov qauv kev ncaj ncees thiab tiv thaiv oxidation hauv kev xav tau ib puag ncig thermal.
ASME SA387 Qib 11 tau muab faib ua tensile Chav Kawm 1 thiab Chav Kawm 2. ASME SA387 Qib 11 Chav Kawm 2 tshwj xeeb tsim cov chromium-molybdenum alloy steel phaj nrog siab tensile thiab yield zog dua Class 1, ua rau nws yog ib qho kev xaiv zoo tshaj rau siab tshaj - cov khoom siv hluav taws xob thiab boilers.
Cov yam ntxwv tseem ceeb
Khoom siv:Chrome-Moly Alloy Steel.
Daim ntawv thov:Welded boilers, siab hlab ntsha, tshav kub exchangers nyob rau hauv siab -kub ib puag ncig.
Kev siv kev lag luam:Roj & Roj, Petrochemical, Fais Fab Tsim.
Cov ntsiab lus tseem ceeb:~ 1.25% Chromium (Cr) thiab ~ 0.50% Molybdenum (Mo) rau lub zog thiab oxidation kuj.
Chav Kawm 2 Distinction:Muab lub zog tensile ntau dua thiab lub zog tawm los piv rau Qib 11 Chav Kawm 1, nrog me ntsis elongation.
Kev kho cua sov:Feem ntau muab cov normalized thiab tempered, los yog quenched thiab tempered.
Chemical Composition (Nominal / Hom)
Chromium: 1.00 - 1.50%.
Molybdenum: 0.45 - 0.65%.
Cov pa roj carbon:Tsawg (piv txwv li, 0.05 - 0.17%).
Manganese, Phosphorus, Sulfur, Silicon:Tsis pub dhau qhov txwv.
Cov txiaj ntsig
High -Tsub Ua Haujlwm:Khaws lub zog ntawm qhov kub ua haujlwm siab.
Corrosion Resistance:Kev tiv thaiv zoo heev rau oxidation, tseem ceeb heev rau kev siv roj qaub.
Cov qauv
Qhia raws li ASME (American Society of Mechanical Engineers) thiab ASTM (American Society for Testing and Materials) cov qauv.
Dab tsi yog qhov zoo ntawm ASME SA387 Qib 11 Chav Kawm 2 cov khoom siv?
ASME SA387 Qib 11 Chav Kawm 2 muaj qhov siab tshaj - qhov kub thiab txias, zoo heev corrosion / oxidation tsis kam (tshwj xeeb tshaj yog nyob rau hauv qaub roj), thiab weldability zoo, ua rau nws zoo tagnrho rau cov hlab ntsha siab thiab kub exchangers nyob rau hauv xav tau roj, roj, thiab petrochemical daim ntaub ntawv uas durability thiab kev nyab xeeb nyob rau hauv thermal stress yog ib qho tseem ceeb. Nws quenched thiab tempered (Class 2) kev kho mob muab cov khoom kho kom zoo, zoo li lub zog tensile ntau dua, piv rau Chav Kawm 1.
Dab tsi yog daim ntawv thov raug cai ntawm ASME SA387 Qib 11 Chav Kawm 2?
ASME SA387 Qib 11 Chav Kawm 2 yog chrome-moly alloy steel siv rau siab- kub, siab- kev siv siab, feem ntau hauv cov roj & roj, petrochemical, thiab hluav taws xob tsim kev lag luam, rau kev tsim cov hlab ntsha, boilers, tshav kub exchangers, thiab kav dej vim nws cov oxidation zoo heev, corrosion kuj, Nws kuj tseem pom muaj nyob rau hauv refineries, tshuaj nroj tsuag, thiab kev lag luam hnyav xws li ntawv thiab qab zib, tuav qhov kub thiab txias thiab corrosive ib puag ncig, nrog rau cov roj qaub.
ASME SA387 Qib 11 Chav Kawm 2 sib npaug li cas?
ASME SA387 Qib 11 Chav Kawm 2 yog chromium-molybdenum alloy hlau rau cov hlab ntsha siab, nrog rau nws qhov ze tshaj plaws ASTM sib npaug yog ASTM A387 Qib 11 Chav Kawm 2, thaum British Standard (BS) sib npaug yog BS 621B, txawm tias ncaj qha EN lossis DIN ib txwm muaj. 10028-2: 13CrMoSi5-5 qib feem ntau piv. Nws yog lub npe hu rau kev kub siab zog, corrosion kuj, thiab yog siv nyob rau hauv roj, roj, thiab petrochemical daim ntaub ntawv.
Sib npaug
| BS | EN | ASTM/ASME | DIN |
| 621 B | ––– | SA387-11-2 | ––– |
Specifications rau ASME SA387 Qib 11 Alloy Steel Phaj
| Lub npe | Nominal Chromium Cov ntsiab lus (%) |
Nominal Molybdenum Cov ntsiab lus (%) |
| SA387 Qib 11 | 1.25% | 0.50% |
Chemical Composition ntawm SA387 Qib 11 Chav Kawm 2
| Cov pa roj carbon (C) | % |
| Kev Ntsuas Kub: Product Analysis: |
0.05 - 0.17 0.04 - 0.17 |
| Manganese (Mn) | % |
| Kev Ntsuas Kub: Product Analysis: |
0.40 - 0.65 0.35 - 0.73 |
| Phosphorus (P) | % |
| Kev Ntsuas Kub: Product Analysis: |
0.035 0.035 |
| Sulfur (S) (Max) | % |
| Kev Ntsuas Kub: Product Analysis: |
0.035 0.035 |
| Silicon (Si) | % |
| Kev Ntsuas Kub: Product Analysis: |
0.50 - 0.80 0.44 - 0.86 |
| Chromium (Cr) | % |
| Kev Ntsuas Kub: Product Analysis: |
1.00 - 1.50 0.94 - 1.56 |
| Molybdenum (hli) | % |
| Kev Ntsuas Kub: Product Analysis: |
0.45 - 0.65 0.45 - 0.70 |
Tensile Requirements rau Chav Kawm 2 Phaj
| Lub npe | Kev xav tau | Qib 11 |
|---|---|---|
| A387 Qib 11 | Tensile zog, ksi [MPA] | 75 txog 100 [515 rau 690] |
| Yield zog, min, ksi [MPa] / (0.2% offset) | 43 [310] | |
| Elongation hauv 8 nti. [200mm], min % | 18 | |
| Elongation hauv 2 nti [50mm], min, % | 22 | |
| Txo thaj tsam, min% |
1. Dab tsi yog qhov yuav tsum tau muaj kev xeem rau ASME SA387 Qib 11 Chav Kawm 2?
Kev sim ntau rau ASME SA387 Qib 11 Chav Kawm 2 suav nrog cov kev sim tshuab xws li tensile (75-100 ksi, min 310 MPa yield, 18-}22% elongation) thiab cuam tshuam (Charpy V-notch), tshuaj ntsuam xyuas (Cr-Molt rau kev kho cua sov), thiab NDT Cov hlab ntsha siab kub siab, txhua qhov tau txheeb xyuas nrog cov ntaub ntawv ntsuas cov khoom (MTR).
2. Tus lej P ntawm ASME SA387 Qib 11 Chav Kawm 2 yog dab tsi?
ASME SA387 Qib 11 Chav Kawm 2 yog Chromium-Molybdenum alloy steel nrog 1.00-1.50% Chromium thiab 0.45-0.65% Molybdenum, belongs rau P-Number 5A, pab pawg nws nrog lwm yam qis-alloy steels, tshwj xeeb hauv kev pleev xim rau A muab tso rau hauv pawg P5A nrog rau cov ntaub ntawv xws li SA-213 T5.
3. Dab tsi yog qhov nyuaj ntawm ASME SA387 Qib 11 Chav Kawm 2?
Lub hardness rau ASME SA387 Qib 11 Chav Kawm 2 steel feem ntau tau teev tseg raws li 200 HB (Brinell Hardness) siab tshaj plaws, txawm tias qee qhov chaw qhia txog ntau yam, nrog rau ib qho hais txog 163-235 HB, ntsuas qhov hnav tsis kam rau cov hlab ntsha kub siab. Cov khoom siv no muaj kev txhim kho lub zog dhau Chav Kawm 1 vim nws cov kev xav tau siab dua tensile/yield, nrog rau qhov hardness ntsuas los ntawm Brinell txoj kev kom sib xws.
4. Qhov txawv ntawm ASME SA387 Qib 11 Chav Kawm 2 thiab ASME SA387 Qib 11 Chav Kawm 1 yog dab tsi?
ASME SA387 Qib 11 Chav Kawm 1 thiab Chav Kawm 2 muaj tib yam tshuaj muaj pes tsawg leeg tab sis txawv ntawm cov khoom siv kho cua sov, nrog rau Chav Kawm 2 muab siab dua tensile / tawm lub zog rau kev thov ntau dua (quenched & tempered) thiab Chav Kawm 1 muab kev zoo dua ductility (normalized), ua rau nws haum qhov twg me ntsis lub zog tab sis xav tau ntau dua, {6} ob qho tib si kub siab.
5. Dab tsi yuav tsum tau ceev faj thaum vuam ASME SA387 Qib 11 Chav Kawm 2?
Thaum vuam ASME SA387 Qib 11 Chav Kawm 2, cov lus ceeb toom tseem ceeb suav nrog kev ua kom sov ua ntej (nyob ib puag ncig 149℃/ 300℃F) txhawm rau tiv thaiv kev tawg, siv cov hlau tsis zoo -hydrogen muab tub lim, tswj kev tswj qhov kub thiab txias, tswj kev sib txuas, thiab kev ua haujlwm tom qab-weld kub ntau yam ± 9 ° (PW) ~ 1275℃F) rau cov khoom zoo, tag nrho thaum ua raws li ASME code thiab xyuas kom zoo PPE thiab qhov cua rau kev nyab xeeb.
6. ASME SA387 Qib 11 Chav Kawm 2 yog dab tsi?
ASME SA387 Qib 11 Chav Kawm 2 yog chromium-molybdenum alloy steel phaj tsim los rau kev pabcuam kub siab hauv cov welded boilers thiab cov hlab ntsha siab, muab cov siab zoo siab - kub lub zog thiab corrosion kuj vim nws ~ 1.25% Chromium thiab ~ 0.5% Molybdenum cov ntsiab lus, nrog "Chav Kawm Qib Siab dua 2. tempering. Cov khoom no yog ib qho tseem ceeb rau cov roj, roj, thiab petrochemical kev lag luam rau khaws cia thiab ua cov kua kub thiab roj.
7. ASME SA387 Qib 11 Chav Kawm 2 yog dab tsi?
ASME SA387 Qib 11 Chav Kawm 2 yog chromium-molybdenum alloy steel tsim los rau siab -kub siab cov hlab ntsha, muab lub zog zoo thiab kev tiv thaiv corrosion, feem ntau siv hauv petrochemicals, tuav kub feem ntau txog li 550℃(1022℃F) lossis siab dua nyob ntawm qhov tshwj xeeb ASME qhov tseem ceeb sib txawv ntawm cov qauv thiab cov qauv tsim, nrog rau qhov sib txawv ntawm 10.
Tau txais nqe lus hais rauASME SA387 Qib 11 Chav Kawm 2, Hu rau GNEE Steel
