ASTM A387|Qib 22 Chav 2|Chromium Molybdenum
ASTM A387 Qib 22 Chav Kawm 2
A387 Qib 22 Chav Kawm 2 yog qib ntawm chromium-molybdenum alloy yog tsim los siv cov fabricators hauv welded boilers thiab cov hlab ntsha siab uas tau tsim los siv rau hauv kev pabcuam kub.
Nrog rau kev ua haujlwm kub zoo thiab tiv thaiv corrosive / oxidation zoo, qib steel no zoo tagnrho rau siv hauv kev lag luam chemical, roj thiab roj.
Qhov sib npaug ntawm ASTM A387 Qib 22 Chav Kawm 2
| BS | EN | ASTM / ASME Cov | DIN |
|---|---|---|---|
| 622-515B | 10 CrMo910 | A/SA387-22-2 |
10 CrMo910 |
Chromium & Molybdenum cov ntsiab lus (raws li ASTM specification):
| Lub npe | Nominal Chromium Cov ntsiab lus (%) | Nominal Molybdenum Cov ntsiab lus (%) |
|---|---|---|
| A387 Qib 22 | 2.25% | 1.00% |
Tensile Requirements rau Chav Kawm 2 Phaj
| Lub npe | Kev xav tau | Qib 22 |
|---|---|---|
| A387 Qib 22 | Tensile zog, ksi [MPA] | 75 txog 100 [515 rau 690] |
| Yield zog, min, ksi [MPa] / (0.2% offset) | 45 [310] | |
| Elongation hauv 8 nti. [200mm], min % | ||
| Elongation hauv 2 nti [50mm], min, % | 18 | |
| Txo thaj tsam, min% | 45 ( ntsuas ntawm cov qauv puag ncig) 40 ( ntsuas ntawm cov qauv tiaj tus) |
ASTM A387 Qib 22 Chav Kawm 2
| Cov pa roj carbon (C) | % |
| Kev Ntsuas Kub: Product Analysis: |
0.05 - 0.15 0.04 - 0.15 |
| Manganese (Mn) | % |
| Kev Ntsuas Kub: Product Analysis: |
0.30 - 0.60 0.25 - 0.66 |
| 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 max 0.50 max |
| Chromium (Cr) | % |
| Kev Ntsuas Kub: Product Analysis: |
2.00 - 2.50 1.88 - 2.62 |
| Molybdenum (hli) | % |
| Kev Ntsuas Kub: Product Analysis: |
0.90 - 1.10 0.85 - 1.15 |
1. Qhov kev pheej hmoo tseem ceeb yog dab tsi thaum lub sij hawm Post-Weld Heat Treatment (PWHT) ntawm A387 Qib 22 Chav Kawm 2 cov khoom?
Cov lus nug no tsom mus rau qhov kev sib tw tseem ceeb ntawm kev siv PWHT uas yuav tsum tau ua rau ib qho khoom siv uas twb muaj lawm - tempered, qhov twg tshaj lub sij hawm tshwj xeeb - qhov kub thiab txias tsis tuaj yeem ua rau dhau - tempering thiab poob rau hauv yield zog hauv qab qhov tsawg kawg nkaus specification.
2. Vim li cas ib tug neeg tsim qauv yuav hais txog Chav Kawm 2 tsis yog Chav Kawm 1 rau Qib 22 reactor?
Cov lus nug no tshawb txog cov laj thawj tseem ceeb ntawm engineering, feem ntau hais txog qhov ua tsis tau zoo ntawm kev ua kom lub cub tawg tag nrho kev kho cua sov ntawm lub nkoj loj los yog ua tiav tiav, ua rau pre-tempered Class 2 phaj yog qhov tsim nyog xaiv.
3. Charpy cuam tshuam qhov tawv ntawm Chav Kawm 2 piv li cas tom qab vuam thiab PWHT hauv zos?
Cov lus nug no hais txog qhov kev txhawj xeeb tseem ceeb ntawm kev ua haujlwm, tshawb xyuas seb puas muaj cua sov hauv cheeb tsam los ntawm vuam thiab tom qab PWHT tuaj yeem ua rau qhov tsis zoo ntawm cov cua sov- thaj tsam cuam tshuam piv rau lub hauv paus hlau.
4. Tus nqi tseem ceeb thiab kev coj noj coj ua yog dab tsi - lub sij hawm cuam tshuam ntawm kev xaiv Qib 22 Chav Kawm 2 dhau Chav Kawm 1?
Lo lus nug no tshuaj xyuas qhov kev lag luam ua lag luam- tawm dhau qhov kev qhia tshwj xeeb, raws li Chav Kawm 2 phaj feem ntau hais kom tus nqi siab dua thiab tej zaum yuav muaj sij hawm xa khoom ntev dua vim nws cov kauj ruam kho cua sov ntxiv.
Tag nrho cov specification thiab cov ntsiab lus muaj nyob rau ntawm kev thov. Cov ntaub ntawv saum toj no yog muab rau kev taw qhia nkaus xwb. Rau kev tsim tshwj xeeb thov hu rau peb cov neeg ua haujlwm muag khoom.
