TS EN 10297-1 Seamless Alloy Mechanical Tube yog dab tsi?
TS EN 10297-1 qhia txog seamless steel raj rau txhua yam thiab dav siv engineering lub hom phiaj, npog ob qho tib si tsis yog - alloy thiab alloy zoo steels. Cov qib alloy hauv tus qauv yog cov cua sov kho nruab nrab carbon, chromium-molybdenum thiab chromium-nickel-molybdenum steels. Kev kho cua sov ua rau lawv muaj ntau qhov sib txawv ntawm cov tawv nqaij thiab lub zog sib xyaw ua ke, yog li ib lub raj me me tuaj yeem muab xa mus rau softened rau machining los yog quenched thiab tempered rau siab zog kev pab cuam.
Cov tsev neeg hlau yog tus cwj pwm los ntawm kev ua haujlwm zoo ua ke nrog kev sib npaug ntawm lub zog, hnav tsis kam, toughness thiab ductility. Cov yam ntxwv muaj xws li cov ntawv teev lus qag, lub zog, lub zog siab compressor thiab turbine Cheebtsam, ua haujlwm ntawm cov khoom hnyav hauv av thiab cov khoom siv hauv av, thiab cov khoom siv ua liaj ua teb.
Size Range thiab Supply Condition
| Parameter | Ntau yam |
|---|---|
| Sab nraud txoj kab uas hla | 26.9 - 610 hli |
| Phab ntsa thickness | 2.3 - 100 hli |
| Ntev | 3000 - 12000 hli |
| Alloy qib | 41Cr4, 25CrMo4, 30CrMo4, 34CrMo4, 42CrMo4, 36CrNiMo4, 30CrNiMo4, 41NiCrMo7-3-2 |
| Kev xa khoom | Li qub rau cov qib E zoo, quenched thiab tempered rau Cr-Mo thiab Cr-Ni- qib Mo |
Cov raj raug txiav txim los ntawm sab nraud txoj kab uas hla, phab ntsa tuab thiab ntev, nrog rau kev zam los ntawm cov ntxhuav ntawm EN 10297-1. Vim hais tias tus txheej txheem hais txog txhua yam tubing es tsis yog kab yeeb nkab, concentricity, sab hauv huv si thiab deg tiav feem ntau pom zoo ntxiv rau qhov seem ntawm cov qauv.
Chemical Composition ntawm Alloy Qib
Cov lus hauv qab no muab lub ladle tsom xam txwv uas tswj hardenability thiab teb rau kev kho cua sov.
| Qib | C (%) | max (%) | Mn (%) | Cr (%) | Mo (%) | Tsis muaj (%) |
|---|---|---|---|---|---|---|
| 41cr 4 | 0.38 - 0.45 | 0.40 | 0.60 - 0.90 | 0.90 - 1.20 | - | - |
| 25 CrMo4 | 0.22 - 0.29 | 0.40 | 0.60 - 0.90 | 0.90 - 1.20 | 0.15 - 0.30 | - |
| 30 CrMo4 | 0.27 - 0.34 | 0.35 | 0.35 - 0.60 | 0.80 - 1.15 | 0.15 - 0.30 | - |
| 34 CrMo4 | 0.30 - 0.37 | 0.40 | 0.60 - 0.90 | 0.90 - 1.20 | 0.15 - 0.30 | - |
| 42CrMo4 | 0.38 - 0.45 | 0.40 | 0.60 - 0.90 | 0.90 - 1.20 | 0.15 - 0.30 | - |
| 36 CrNiMo4 | 0.32 - 0.40 | 0.40 | 0.50 - 0.80 | 0.90 - 1.20 | 0.15 - 0.30 | 0.90 - 1.20 |
| 30 CrNiMo4 | 0.26 - 0.34 | 0.40 | 0.30 min | 1.80 - 2.20 | 0.30 - 0.50 | 1.80 - 2.20 |
| 41 NiCrMo7-3-2 | 0.38 - 0.44 | 0.30 | 0.60 - 0.90 | 0.70 - 0.90 | 0.15 - 0.30 | 1.65 - 2.00 |
Phosphorus thiab sulfur yog tuav mus rau qhov siab tshaj plaws ntawm 0.035% nyob rau hauv feem ntau qib, thiab mus rau 0.025% rau 41NiCrMo7-3-2, uas txo qhov kev pheej hmoo ntawm kub shortness thaum kub ua hauj lwm thiab txhim kho tej yam toughness. Qhov twg cov ntsiab lus nitrogen twb tau kho los ntawm lwm cov ntsiab lus, qhov tsawg kawg nkaus aluminium yuav tsum tau siv rau kev kho cov nplej zoo. Qhov siab tshaj plaws ua ke niobium thiab vanadium cov ntsiab lus yog txwv rau 0.20% hauv cov qib micro-alloyed.
Mechanical Properties ntawm Fine Grain Quality Grade
Cov qib E sib xyaw ua ke nrog cov txheej txheem zoo lis microstructure thiab raug txiav txim nrog kev lees paub yam tsawg kawg nkaus lub zog ntawm rho tawm 20 degrees Celsius. Yield zog qhov tseem ceeb hauv qab no tau hais rau phab ntsa thickness txog 16 hli; tus qauv txo qhov tsawg kawg nkaus raws li phab ntsa thickness nce.
| Qib | Hwj chim min (MPa) | Rm (MPa) | Elongation min (%) | Charpy KV min ntawm -20 C |
|---|---|---|---|---|
| E275K2 | 275 | 410 | 22 | 40 J longitudinal, 27 J transverse |
| E355K2 | 355 | 490 | 20 | 40 J longitudinal, 27 J transverse |
| E420K2 | 420 | 600 | 19 | 27 J longitudinal, 20 J transverse |
| E460K2 | 460 | 550 | 19 | 40 J longitudinal, 27 J transverse |
| E590K2 | 590 | 700 | 16 | 40 J longitudinal, 27 J transverse |
| E730K2 | 730 | 790 | 15 | 40 J longitudinal, 27 J transverse |
Cov pa roj carbon tsawg kawg yog 0.20% hauv qib E275K2, E355K2, E460K2 thiab E730K2 thiab tuav ntawm 0.16% thiab 0.22% hauv E420K2 thiab E590K2. Manganese thaj tsam li ntawm 0.50 - 1.40% hauv E275K2 mus txog 1.40 - 1.70% hauv E730K2, thiab qhov zoo dua cov nplej refining ntxiv, qhov siab dua lub zog uas tuaj yeem ncav cuag qib carbon.
Mechanical Properties ntawm tshav kub kho Alloy qib
| Qib | Hwj chim min (MPa) | Rm (MPa) | Elongation min (%) |
|---|---|---|---|
| 41cr 4 | 800 | 1000 | 11 |
| 25 CrMo4 | 700 | 900 | 12 |
| 30 CrMo4 | 750 | 950 | 12 |
| 34 CrMo4 | 800 | 1000 | 11 |
| 42CrMo4 | 900 | 1100 | 10 |
| 36 CrNiMo4 | 900 | 1100 | 10 |
| 30 CrNiMo4 | 1050 | 1250 | 9 |
| 41 NiCrMo7-3-2 | 950 | 1150 | 9 |
Cov txiaj ntsig saum toj no siv rau qhov quenched thiab tempered mob rau phab ntsa thickness mus txog 8 hli, nrog longitudinal xeem daim. Yam tsawg kawg nkaus yield zog thiab elongation poob thaum phab ntsa thickness nce, thiab tus qauv muab cais txhua kab rau txhua thickness band. Transverse test qhov tseem ceeb yog qis dua qhov muaj nuj nqis longitudinal thiab raug cais cais.
Kev kho cua sov thiab Fabrication
Normalizing refines lub grain qauv ntawm cov qib E thiab tsim ib tug uniform ferrite -pearlite microstructure.
quenching thiab tempering tsim lub siab zog thiab toughness ua ke ntawm Cr-Mo thiab Cr-Ni-Mo qib.
Kev ntxhov siab tom qab machining txo cov kev ntxhov siab seem thiab qhov txav txav hauv cov khoom precision.
Machinability yog txhim kho los ntawm kev txiav txim ib qho softened los yog annealed mob rau qhov chaw uas yuav tsum tau nws kim heev tig.
Vuam ntawm cov qib alloy yuav tsum tau preheat thiab tom qab vuam kev kho cua sov sib phim rau cov pa roj carbon sib npaug ntawm qib.
Kev tshuaj xyuas thiab cim
Tubes tau muab nrog daim ntawv pov thawj kev xeem uas sau cov naj npawb ntawm cov cua sov, qib, qhov loj me, qhov kev xa khoom thiab cov txiaj ntsig ntawm cov kev xeem uas xav tau los ntawm kev txiav txim. Kev ntsuam xyuas hydrostatic, eddy tam sim no lossis kuaj ultrasonic, thiab kev soj ntsuam cov khoom sib nqus ntawm qhov chaw tuaj yeem raug teev rau kev nyab xeeb ntsig txog qhov chaw. Kev txheeb xyuas qhov ntev ntawm txoj kab uas hla, phab ntsa tuab, qhov ntev thiab qhov ncaj yog ua ua ntej cov raj raug cim, tiv thaiv thiab ntim rau kev thauj mus los.
Cov lus nug nquag
Q: EN 10297-1 npog dab tsi?
Nws npog seamless steel raj rau txhua yam thiab dav siv engineering lub hom phiaj, nrog rau cov uas tsis yog - alloy zoo steels thiab cov tshav kub kho tau alloy qib uas teev nyob rau hauv nws cov ntxhuav.
Q: Cov qib alloy twg yog cov qauv no?
Cov alloy ntau yam khiav los ntawm 41Cr4 txog 25CrMo4, 30CrMo4, 34CrMo4, 42CrMo4, 36CrNiMo4 thiab 30CrNiMo4 txog 41NiCrMo7-3-2, tag nrho cov khoom siv nrog kev tswj chemistry thiab kev kho cua sov.
Q: Qhov ntau thiab tsawg yog muaj?
Sab nraud txoj kab uas hla los ntawm 26.9 hli mus rau 610 hli, phab ntsa thickness ntawm 2.3 hli mus rau 100 hli thiab ntev los ntawm 3000 hli mus rau 12000 hli, raws li qhov tolerances ntawm tus qauv.
Q: Qhov txawv ntawm qib E thiab Cr-Mo qib yog dab tsi?
Cov qib E yog cov hlau zoo li qub uas tsim los rau kev ua haujlwm thiab kev ua haujlwm dav dav, thaum Cr-Mo thiab Cr-Ni- qib Mo yog quenched thiab tempered kom ncav cuag ntau dua yield zog rau lub zog, qag thiab shafts.
Q: Qhov ntsuas kub ntawm qhov ntsuas qhov cuam tshuam li cas?
K2 lub npe yuav tsum muaj qhov tsawg kawg nkaus qhov nruab nrab absorbed zog ntawm 40 J longitudinal lossis 27 J transverse ntawm rho tawm 20 degrees Celsius rau feem ntau qib, nrog rau cov nqi qis dua rau cov khoom muaj zog dua.
Q: Yuav ua li cas alloy mechanical raj raug txiav txim?
Tshaj tawm tus qauv, qib, tus me nyuam qhov xwm txheej, sab nraud txoj kab uas hla, phab ntsa thickness, ntev, kev xeem yuav tsum tau thiab daim ntawv pov thawj hom kom lub zeb yuav paub meej tias chemistry thiab cov khoom ua ntej dov.
