ASTM A387 Qib 12 Chav Kawm 2yog lub siab -kev ua tau 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.
Sib npaug
| BS | EN | ASTM / ASME Cov | DIN |
| 620 B | 13 ZPO 45 | A387-12-2 | 13 ZPO 44 |
Specifications rau ASTM A387 Qib 12 Alloy Steel Phaj
| Lub npe | Nominal Chromium Cov ntsiab lus (%) |
Nominal Molybdenum Cov ntsiab lus (%) |
| A387 Qib 12 | 1.00% | 0.50% |
Tensile Requirements rau ASTM A387 Qib 12 Alloy Steel Phaj Class 2 Phaj
| Lub npe: | Yuav tsum tau: | Qib 12 |
| A387 Qib 12 | Tensile zog, ksi [MPA] | 65 txog 85 [450 rau 585] |
| Yield zog, min, ksi [MPa] / (0.2% offset) | 40 [275] | |
| Elongation hauv 8 nti. [200mm], min % | 19 | |
| Elongation hauv 2 nti. [50mm], min, % | 22 | |
| Txo thaj tsam, min% | ––– |
Cov Khoom Siv Tshuaj Rau ASTM A387 Qib 12 Alloy Steel Phaj
| Element | Chemical Composition (%) | |
| ASTM A387 Qib 12 | ||
| Cov pa roj carbon: | Kev Ntsuas Kub: | 0.05 - 0.17 |
| Product Analysis: | 0.04 - 0.17 | |
| Manganese: | Kev Ntsuas Kub: | 0.40 - 0.65 |
| Product Analysis: | 0.35 - 0.73 | |
| Phosphorus: | Kev Ntsuas Kub: | 0.035 |
| Product Analysis: | 0.035 | |
| Sulfur (max): | Kev Ntsuas Kub: | 0.035 |
| Product Analysis: | 0.035 | |
| Silicon: | Kev Ntsuas Kub: | 0.15 - 0.40 |
| Product Analysis: | 0.13 - 0.45 | |
| Chromium: | Kev Ntsuas Kub: | 0.80 - 1.15 |
| Product Analysis: | 0.74 - 1.21 | |
| Molybdenum: | Kev Ntsuas Kub: | 0.45 - 0.60 |
| Product Analysis: | 0.40 - 0.65 |
Cov ntawv thov tseem ceeb
Cov khoom siv feem ntau yog siv nyob rau hauv kev lag luam uas cov cuab yeej raug rau siab sab hauv thiab siab kub.
Roj & Roj Refining:
Qhov zoo tshaj plaws rau "kev pabcuam qaub" vim nws tsis kam rau hydrogen sulfide (H2S). Cov cuab yeej tshwj xeeb suav nroghydrocrackers, cais, thiab siab -kub cia tanks.
Kev tsim hluav taws xob:
Siv dav hauv kev tsim kho ntawm cov boilers, superheaters, thiab chav kav dej uas yuav tsum muaj kev ruaj ntseg ntawm qhov kub txog li 575 degree.
Kev Siv Tshuaj:
Kev tsim kho ntawm cov reactors, kub exchangers, thiab cov hlab ntsha siab uas tuav cov xov xwm corrosive.
Tshwj xeeb Industrial:
Kev tsim cov pa oxygen cylinders, cov khoom siv hlau loj loj, thiab cov kav dej txhawb nqa rau kev thauj mus los kub.
| Qhov zoo | Kev piav qhia |
|---|---|
| Siab Tensile zog | Chav Kawm 2 muaj lub zog tensile ntau dua (450-585 MPa) dua li Chav Kawm 1, tso cai rau cov phaj nyias nyias tsim hauv siab - cov hlab ntsha siab. |
| Superior Kub Hloov | Piv rau Qib 11, Qib 12 muajzoo dua thermal conductivity, ua kom muaj txiaj ntsig zoo rau cov khoom siv hluav taws xob uas txo qis qhov ntsuas kub ntawm qhov ntsuas kub yog qhov tseem ceeb. |
| Corrosion Resistance | Cov chromium (1.00–1.50%) thiab molybdenum (0.45–0.60%) cov ntsiab lus muab kev tiv thaiv zoo rauoxidation, pitting, thiabchloride-induced stress corrosion cracking. |
| Nqi Efficiency | Muab tus nqi qis dua - lwm tus nqi rau Qib 22 rau cov ntawv thov uas xav tau siab thiab qhov kub thiab txias, muab qhov xav tau ruaj khov yam tsis muaj tus nqi siab dua ntawm cov hlau hnyav hnyav dua. |
| Weldability & Fabrication | Txawm tias nws lub zog siab, nws tuavzoo heev weldabilitythiab formability, uas yooj yim rau fabrication ntawm complex hlab ntsha Cheebtsam. |
| Durability hauv Sour Service | Tshwj xeeb engineered los tiv thaiv hnyav chemical ib puag ncig, ua kom lub neej ntev ntawm cov cuab yeej hauv petrochemical sector. |
Vim li cas thiaj xaiv peb:
Koj tuaj yeem tau txais cov khoom zoo meej raws li qhov koj xav tau ntawm tus nqi tsawg kawg nkaus.
Peb kuj muab Reworks, FOB, CFR, CIF, thiab qhov rooj rau qhov rooj tus nqi xa khoom. Peb xav kom koj ua deal rau shipping uas yuav zoo heev.
Cov ntaub ntawv uas peb muab yog muaj tseeb tiag, txoj cai los ntawm raw cov ntaub ntawv xeem daim ntawv pov thawj mus rau qhov kawg dimensional nqe lus.
Peb lav muab cov lus teb tsis pub dhau 24 teev (feem ntau hauv tib lub sijhawm)
Koj tuaj yeem tau txais cov khoom hloov pauv, zeb xa khoom nrog txo lub sijhawm tsim khoom.
Peb tau mob siab rau peb cov neeg siv khoom. Yog tias nws yuav tsis tuaj yeem ua tau raws li koj cov kev xav tau tom qab kuaj xyuas tag nrho cov kev xaiv, peb yuav tsis ntxias koj los ntawm kev cog lus tsis tseeb uas yuav tsim kev sib raug zoo rau cov neeg siv khoom.
Yog xav paub ntxiv txog GNEE cov khoom siv hlau, tiv tauj peb ntawm beam@gneesteelgroup.com. Peb tos ntsoov yuav ua haujlwm nrog koj.
Puas yog nws tsim nyog los ua cov hlab ntsha siab?
Yog lawm, nws yog dav siv rau cov hlab ntsha siab hauv cov nroj tsuag petrochemical, vim nws tuaj yeem tiv taus siab sab hauv thiab ruaj khov kub.
Dab tsi yog qhov nyuaj ntawm A387 Qib 12 Chav Kawm 2 tom qab kev kho cua sov?
Tom qab normalizing thiab tempering, nws Brinell hardness yog hais txog 187-229 HB, sib npaug hardness thiab toughness rau industrial daim ntaub ntawv.
Nws puas tuaj yeem txias - tsim?
Nws tuaj yeem ua kom txias - tsim nrog cov txheej txheem tsim nyog, tab sis yuav tsum tau preheating rau cov phaj tuab kom tiv thaiv kev tawg thiab ua kom zoo zoo.
Dab tsi yog lub luag haujlwm tseem ceeb ntawm molybdenum hauv cov hlau alloy no?
Molybdenum txhim kho nws qhov siab - kub lub zog, nkag siab thiab corrosion kuj, ua rau nws hloov mus rau qhov chaw ua haujlwm hnyav.
Nws puas muaj kev qaug zog zoo?
Yog lawm, nws muaj kev qaug zog zoo heev nyob rau hauv cov khoom siv cyclic, haum rau cov khoom siv uas ua haujlwm tsis tu ncua hauv kev hloov siab thiab kub.
Qhov kev xa khoom ntawm A387 Qib 12 Chav Kawm 2 yog dab tsi?
Nws yog feem ntau xa nyob rau hauv normalized thiab tempered mob, kom ruaj khov mechanical zog thiab ua tau raws li cov kev cai thov kev lag luam.
Nws puas tuaj yeem siv rau hauv cov chaw tsim hluav taws xob nuclear?
Nws tsis yog feem ntau siv rau hauv cov chaw tseem ceeb ntawm cov chaw tsim hluav taws xob nuclear tab sis tuaj yeem siv rau hauv kev pabcuam siab - kub thiab siab - cov kav dej thiab cov khoom siv.
Dab tsi yog qhov cuam tshuam toughness ntawm cov hlau no hauv chav tsev kub?
Nws Charpy V-qhov cuam tshuam qhov toughness siab dua 35 J ntawm chav tsev kub, ua kom muaj kev tiv thaiv zoo - cuam tshuam kev ua haujlwm hauv ib txwm ua haujlwm.
Yuav ua li cas khaws A387 Qib 12 Chav Kawm 2 kom tiv thaiv corrosion?
Nws yuav tsum tau muab cia rau hauv qhov chaw qhuav, qhov dej zoo- qhov cua, kom deb ntawm cov dej noo thiab corrosive media, thiab npog nrog daim ntaub tsis muaj dej yog tias tsim nyog.
Qhov siab tshaj plaws thickness ntawm A387 Qib 12 Chav Kawm 2 yog dab tsi?
Qhov siab tshaj plaws ntawm cov phaj lag luam tuaj yeem ncav cuag 200 hli, haum rau kev tsim cov tuab tuab - cov hlab ntsha siab thiab hnyav - cov khoom siv ua haujlwm.