Cov ntsiab lus ceev
K41545yog ib qho khoom tsim los ntawm lubASTM A335 txuj, uas npogseamless ferritic alloy - steel yeeb nkab rau siab - qhov kev pab kub. Hauv cov ntsiab lus yooj yim, K41545 yeeb nkab yog ua los ntawmChrome-Moly alloy steelthiab yog tsim los tswj kev kub siab thiab kub kub, ua rau nws yog ib qho tseem ceeb hauv cov chaw tsim hluav taws xob thiab cov chaw petrochemical.
Qhov sib xws, zoo-paub lub npe rau cov khoom no yogP11.
1. Cov ntsiab lus tseem ceeb thiab tshuaj lom neeg muaj pes tsawg leeg
Txheem:ASTM A335 / A335M - Txheem Specification rau Seamless Ferritic Alloy-Steel Yeeb Nkab rau Siab- Kev Pabcuam Kub.
Qib:P11 (Lub "P" sawv cev rau "Kev Pabcuam Siab").
Chemical Composition (Qhov hnyav%):
| Element | Kev sib xyaw (%) |
|---|---|
| Cov pa roj carbon (C) | 0.05 - 0.15 |
| Manganese (Mn) | 0.30 - 0.60 |
| Phosphorus (P) | 0.025 max |
| Sulfur (S) | 0.025 max |
| Silicon (Si) | 0.50 - 1.00 |
| Chromium (Cr) | 1.00 - 1.50 |
| Molybdenum (hli) | 0.44 - 0.65 |
Cov ntsiab lus tseem ceeb ntawm alloying yogChromium (Cr)rau oxidation tsis kam thiabMolybdenum (hli)rau lub zog ntawm qhov kub thiab txias.
2. Mechanical Properties
Cov yeeb nkab yuav tsum ua tau raws li cov khoom siv hauv qab no tom qab kev kho cua sov (normalize thiab temper):
| Khoom | Tus nqi |
|---|---|
| Tensile zog | 415 MPa (60,000 psi) min |
| Yield zog | 205 MPa (30,000 psi) min |
| Elongation | Varies with wall thickness, but typically >30% |
3. Cov yam ntxwv tseem ceeb thiab qhov zoo
Siab -Tsub Muaj Zog:Khaws nws cov qauv kev ncaj ncees thiab lub zog ntawm qhov kub siab (feem ntau txog ~ 593℃/ 1100℃F rau kev pabcuam txuas ntxiv).
Creep Resistance:Resistant "ceep" - qeeb, mus tas li deformation uas tuaj yeem tshwm sim rau cov hlau hauv kev ntxhov siab ntawm qhov kub thiab txias ntev ntev. Qhov no yog nws cov khoom tseem ceeb tshaj plaws.
Oxidation & Corrosion Resistance:Cov ntsiab lus chromium muab kev ua haujlwm zoo rau kev ntsuas (oxidation) hauv chav thiab qee qhov chaw corrosive.
Weldability:Nws muaj qhov zoo weldability, txawm hais tias nws yuav tsum tau ua ntej - cua sov thiab tom qab -weld heat treatment (PWHT) los tiv thaiv kev tawg thiab kho cov khoom siv kho tshuab.
Seamless Kev Tsim Kho:Ua seamless txhais tau tias nws tsis muaj longitudinal weld seam, ua rau nws txhim khu kev qha rau siab - siab daim ntawv thov raws li nws yog inherently muaj zog thiab tsis tshua muaj kev tsis ua hauj lwm ntawm tej yam tsis muaj zog cov ntsiab lus.
4. Kev siv ntau
K41545 / P11 yeeb nkab yuav luag tsuas yog siv rau hauv kev xav tau kev lag luam:
Kev tsim hluav taws xob:Siab -kub kab kab, superheater thiab reheater raj, thiab cov kav dej loj hauv cov nroj tsuag fossil roj.
Petrochemical Kev Lag Luam:Refinery piping, rhaub tubing, thiab hloov kab rau cov roj kub thiab roj.
Roj & Roj:Hauv cov chaw ua haujlwm rau siab -siab, siab -kub (HPHT) kev pabcuam.
Pressure Vessel Cheebtsam:Rau qhov chaw uas ua haujlwm nyob rau hauv siab thiab kub.
5. Qib sib npaug
K41545 P11 paub los ntawm cov lej sib txawv hauv ntau cov qauv thoob ntiaj teb. Nov yog qhov sib npaug tshaj plaws:
| Txuj | Qib sib npaug |
|---|---|
| UNS | K11597 |
| DIN / EN | 13CrMo4-5 |
| BS | 620-360 |
6. Kev xav txog kev yuav khoom
Thaum xaj K41545 seamless yeeb nkab, koj yuav tsum qhia ntau tshaj li cov khoom siv qib. Daim ntawv xaj kom tiav yuav tsum suav nrog:
Txheem:ASTM A335 Cov Lus Qhia Tshwj Xeeb
Qib: P11 (K41545)
Loj:Sab nrauv (OD) thiab Phab Ntsa Thickness (WT) - feem ntau teev los ntawm ASME B36.10M lub sijhawm (xws li SCH 40, SCH 80, XXS).
Ntev:Random (16-22 ft), Ob Chav Random (34-45 ft), lossis txiav ntev.
Kev Xeem Xeem:Feem ntau, cov kev xav tau ntxiv xws liS1 (Skips)los yogS5 (Bend Test)tau teev tseg.
Ntawv pov thawj:Kev xav tau rau aMill Test Certificate (MTC)los yogMaterial Test Report (MTR)txheeb xyuas cov tshuaj thiab cov khoom siv kho tshuab.
Xaus
Hauv cov ntsiab lus,K41545 Seamless Steel Yeeb Nkab (ASTM A335 P11)yog ib qho kev ua haujlwm siab -kev ua tau zoo, chromium-molybdenum alloy yeeb nkab engineered rau qhov tseem ceeb heev - kub thiab siab - kev siv siab. Nws seamless xwm, ua ke nrog nws zoo heev creep zog thiab oxidation kuj, ua rau nws yog ib qho tseem ceeb cov ntaub ntawv nyob rau hauv lub zog thiab txheej txheem industries.
