Txheej txheem cej luam
1.0562yog tus qauv European (EN) cov khoom siv rau atsis yog- alloy zoo steelnpaj rau lub hom phiaj siab. Nws yog qib ntau thiab ntau yam siv dav rau cov raj boiler, cov raj superheater, thiab lwm yam siab- muaj cov khoom hauv ntau qhov kev lag luam.
Qhov tseem ceeb takeaway yog qhov ntawd1.0562 tsis yog tshuaj lom neeg muaj pes tsawg leegmas akhoom naj npawb. Nws cov khoom yog txhais los ntawm cov qauv khoom nws tau muab rau hauv, feem ntauTS EN 10216-2.
1. Cov ntsiab lus tseem ceeb thiab cov qauv
Cov txheej txheem tseem ceeb tshaj plaws rau cov kav dej thiab cov raj ua los ntawm 1.0562 yog:
TS EN 10216-2: Seamless steel raj rau lub hom phiaj siab - Kev xa tawm cov xwm txheej - Ntu 2: Cov hlau tsis muaj hlau thiab hlau alloy nrog cov khoom ntsuas kub siab.
Nyob rau hauv cov qauv no, 1.0562 sib raug rau covsteel qib P235GH.
"P"stands rau lub hom phiaj siab.
"235"qhia qhovYam tsawg kawg nkaus uas tau teev tseg lub zog (ReH) ntawm chav tsev kub yog 235 MPa.
"H"txhais tau hais tias cov khoom tau teev rau High temperatures.
"G"txhais tau hais tias phosphorus (P) thiab sulfur (S) cov ntsiab lus raug tswj kom zoo dua qub.
Cov qauv sib npaug los ntawm Lwm Cheeb Tsam:
| Thaj tsam | Txuj | Qib sib npaug | Nco tseg |
|---|---|---|---|
| Teb chaws Europe | TS EN 10216-2 | P235GH | Qhov ncaj, feem ntau specification. |
| Teb chaws USA | ASTM A / ASME SA-192 | SIB-192 | Ib qho sib npaug ze heev, feem ntau siv rau boiler raj. |
| Teb chaws USA | ASTM A / ASME SA-106 | Qib B | Ib qho sib npaug rau seamless carbon steel yeeb nkab. |
| Lub teb chaws Yelemees | TIAB SA 17175 | qib 35.8 | Tus qauv DIN qub, feem ntau hloov los ntawm EN 10216-2. |
| Nyiv | JIS G3461 | SWB 410 | Ib qho piv rau qib rau boiler thiab tshav kub exchanger raj. |
2. Tshuaj muaj pes tsawg leeg (raws li EN 10216-2 rau P235GH)
Cov muaj pes tsawg leeg yog sib npaug los muab cov weldability zoo, formability, thiab lub zog ntawm siab kub.
| Element | Kev sib xyaw (% los ntawm qhov hnyav, max tshwj tsis yog tau teev tseg) |
|---|---|
| Cov pa roj carbon (C) | 0.16 % |
| Manganese (Mn) | 0.40 - 1.20 % |
| Silicon (Si) | 0.40 % |
| Phosphorus (P) | 0.025 % |
| Sulfur (S) | 0.020 % |
| Nitrogen (N) | 0.012 % |
Lus Cim: Cov qib qis ntawm Phosphorus thiab Sulfur txhim khu weldability thiab tsis kam mus rau temper embrittlement.
3. Mechanical Properties
Cov khoom yog dab tsi ua rau cov hlau no haum rau siab -kev pabcuam kub.
Ntawm chav ntsuas kub (kwv yees . 20 degree):
Yield Strength (ReH min):235 MPa rau
Tensile zog (Rm):360 - 500 MPa
Elongation (A min):25% (ntawm qhov ntsuas qhov ntev ntawm 5.65√S₀)
Qhov kub thiab txias Properties:
Ib qho tseem ceeb ntawm P235GH / 1.0562 yog nws lub zog ruaj khov ntawm qhov kub thiab txias. Hauv qab no yog ib qho piv txwv ntawm nwsYam tsawg kawg nkaus tawm lub zog (Rp0.2 min)ntawm ntau yam kub:
| Kub | Yield zog (Min, MPa) |
|---|---|
| 50 degree | 235 |
| 100 degree | 215 |
| 150 degree | 195 |
| 200 degree | 175 |
| 250 degree | 155 |
| 300 degree | 135 |
Cov ntaub ntawv no qhia tau hais tias; cov neeg tsim qauv yuav tsum siv qhov tseem ceeb los ntawm cov qauv kev cai.
4. Cov yam ntxwv tseem ceeb
Zoo Weldability:Nws cov ntsiab lus carbon tsawg ua rau nws yooj yim weldable los ntawm txhua txoj hauv kev yam tsis muaj pre- cua sov (hauv feem ntau thicknesses) los yog tom qab-weld heat treatment, tab sis cov txheej txheem yuav tsum yeej ib txwm tsim nyog.
Formability zoo:Nws tuaj yeem khoov thiab flanged nrog tus txheeb ze yooj yim.
Siab -Tsub Muaj Zog:Tsim los tswj cov txheej txheem kev ncaj ncees nyob rau hauv siab ntawm qhov kub thiab txias mus txog ~ 450-500 degree.
Tus nqi -zoo:Raws li cov hlau tsis yog - alloy steel, nws yog kev lag luam ntau dua li cov hlau hlau xws li 1.7380 (P91) lossis stainless hlau.
Oxidation Resistance:Txwv tsis pub. Thaum qhov kub thiab txias (tshwj xeeb tshaj yog saum 450 degree), nws yuav tsim cov nplai (oxidize) sai heev tshwj tsis yog siv hauv qhov chaw tswj hwm (xws li hauv lub boiler nrog dej kho) los yog nrog cov txheej txheem sab nraud.
5. Kev siv ntau
1.0562/P235GH kav yog siv nyob qhov twg muaj qhov yuav tsum tau muaj lub siab, chav, los yog kub gases.
Boiler Tubes:Cov dej- raj thiab hluav taws- cov raj hauv chaw tsim khoom thiab chaw nres tsheb fais fab boilers.
Superheaters thiab Reheaters:Cov seem ntawm lub boiler uas ntxiv cov cua sov rau qhov kub siab dua.
Cov nkoj siab:Rau ntau yam kev lag luam.
Thaum tshav kub kub Exchangers:Plhaub thiab tube configurations.
Chav dej thiab cov kav dej kub:Nyob rau hauv lub hwj chim nroj tsuag thiab industrial chaw.
Industrial Piping Systems:Rau siab -kub kua.
Sib piv nrog lwm cov Boiler Steels
| Khoom | 1.0562 (P235GH) | 1.0425 (P265GH) | 1.7380 (X10CrMoVNb9-1 / P91) |
|---|---|---|---|
| Hom | Tsis yog{0}}Alloy Carbon Steel | Tsis yog{0}}Alloy Carbon Steel | Chromium{0}}Molybdenum Alloy Steel |
| Min Yield zog | 235 MPa rau | 265 MPa rau | 415 MPa rau |
| Max Service Temp | ~ 450 degree | ~ 450 degree | ~ 600 degree |
| Nqi | Tsawg | Tsawg | Siab |
| Ntsiab Feature | Lub hom phiaj dav dav, zoo weldability | me ntsis muaj zog dua P235GH | Siab zog & creep kuj nyob rau hauv high temps |
| Siv Case | General boiler raj, qis -temp siab cov hlab ntsha | Qhov twg yuav tsum muaj zog dua me ntsis | High-siab, siab-kub superheater headers & piping |
Cov ntsiab lus
1.0562 Carbon Steel Boiler Yeeb Nkab(cov ntaub ntawv naj npawb rauP235GHRaws li EN 10216-2) yog qhov tseem ceeb, txhim khu kev qha, thiab tus nqi- cov khoom siv tau zoo rau cov cuab yeej siv siab ua haujlwm ntawm qhov kub siab. Nws zoo heev tshuav nyiaj li cas ntawm lub zog, weldability, thiab manufacturability ua rau nws mus-rau kev xaiv rau ib tug ntau yam ntawm daim ntaub ntawv nyob rau hauv lub hwj chim tsim, petrochemical, thiab industrial cua sov tshuab.
Lus Cim Tseem Ceeb:Nco ntsoov xa mus rau qhov tshwj xeeb qhov project engineering specifications, tsim cov lej (xws li ASME BPVC lossis PED), thiab cov ntaub ntawv pov thawj thawj los ntawm cov chaw tsim khoom kom ntseeg tau tias cov khoom ua tau raws li txhua qhov yuav tsum tau ua rau koj daim ntawv thov.
