Qhov txawv ntawm S275JR thiab S275J2 yog dab tsi?
Qhov sib txawv ntawm S275JR thiab S275J2 yog ib qho piv txwv classic ntawm yuav ua li cas European steel naming system qhia cov ntaub ntawv tseem ceeb txog kev cuam tshuam rau kev nyuaj siab (ua haujlwm rau cov pob txha tawg) thiab cov txheej txheem deoxidation.
Ob qib sib piv qhov tsawg kawg nkaus tawm lub zog (275 MPa) thiab cov tshuaj muaj pes tsawg leeg zoo sib xws. Qhov sib txawv tseem ceeb yog nyob rau hauv lawv qhov kev ua tau zoo ntawm qhov kub thiab txias thiab lawv qhov zoo.
Cov khoom siv S275JR yog dab tsi?
S275JR yog cov qauv siv dav hauv European (EN 10025) tsis yog - alloy structural steel, paub txog nws lub zog nruab nrab, zoo weldability, thiab toughness, qhia los ntawm "S" (Structural), "275" (tsawg kawg yield zog ntawm 275 MPa), thiab "JR" nyob rau hauv nws lub tswv yim kev xeem, 20℃kev tsim kho, tshuab, txuas hniav, thiab kev tsim nkoj, feem ntau piv rau ASTM A36 hauv Asmeskas
Cov khoom siv S275J2 yog dab tsi?
S275J2 yog tus qauv nrov nyob sab Europe (EN 10025-2) tsis yog- alloy structural steel paub txog nws lub zog zoo, weldability, thiab zoo heev qis- kub toughness, nrog 'S' rau cov qauv, '275' rau nws qhov tsawg kawg nkaus yield zog (275 J2's ntawm lub zog, thiab ntsuas qhov tsawg kawg nkaus yield zog (275 MPa')℃(yam tsawg kawg 27 Joules). Nws yog dav siv nyob rau hauv kev tsim kho ( choj, vaj tse), cov tshuab hnyav, nkoj tsim, thiab cov kav dej, uas muaj cov ntsiab lus ntawm cov pa roj carbon tsawg rau kev vuam yooj yim thiab cov khoom txias txias.
Ntawm no yog ib qho kev qhia meej meej rau qhov sib txawv ntawm S275JR thiab S275J2
Cov lus piav qhia ntxaws txog cov Suffixes
1.S275=Yam tsawg kawg nkaus tawm lub zog ntawm 275 MPa (rau thickness Tsawg dua los yog sib npaug rau 16 hli).
2. Tsab ntawv thib ob: Deoxidation & Toughness Guarantee
R=Rimmed Steel (S275JR):
Txheej Txheem: Ua tsis tiav deoxidized. Qhov tshwm sim nyob rau hauv cov txheej txheem hlau tsis huv tab sis cov tub ntxhais tsis sib xws nrog ntau impurities (sib cais).
Yog vim li cas: Feem ntau pheej yig dua los tsim. Txawm li cas los xij, nws cov khoom siv kho tshuab, tshwj xeeb tshaj yog nyob rau hauv cov ntu tuab, tsis zoo ib yam. Nws tsis tau lees paub rau qis- kev pabcuam kub.
J2=Killed Steel nrog Specified Impact Value (S275J2):
Txheej Txheem: Ua tiav deoxidized siv cov khoom xws li silicon / aluminium. Qhov tshwm sim nyob rau hauv ib tug sib xws, homogeneous qauv thoob plaws hauv tus ntoo khaub lig-section.
Yog vim li cas: Superior internal soundness, zoo ib yam khoom (lub zog, ductility), thiab yuav tsum tau kuaj tej yam ntawm -20 degree. Qhov no ua rau nws ntseeg tau ntau dua rau cov ntawv thov tseem ceeb.
3.Tus nab npawb hauv 'J2'=Test Temperature
Lub '2' hauv J2 tshwj xeeb txhais tau tias Charpy V- ntsuas ntsuas kub hauv kaum degrees Celsius: 2=-20℃. (J0 yuav yog 0 degree, J3 yuav yog -30 degree, thiab lwm yam).
Yuav xaiv li cas: S275JR vs. S275J2
| XaivS275 JRyog: | XaivS275J2yog: |
|---|---|
| • Cov qauv yog nyob rau hauv ib qho kev nyab xeeb uas tsis muaj kev pheej hmoo ntawm kev pabcuam hauv qab 0℃. • Cov qauv yog loaded statically (tsis muaj kev cuam tshuam tseem ceeb lossis dynamic rog). • Qhov project no yog tus nqi siab heev -rhiab heev thiab qis-kub toughness tsis yog raws li txoj cai. • Koj tab tom tsim tej yam yooj yim, tsis yog -cov khoom tseem ceeb. |
• Cov qauv yog nyob rau hauv qhov chaw txias los yog raug rau lub caij ntuj no kub. • Cov qauv yuav raug rau kev thauj khoom tsis zoo, kev co, lossis muaj peev xwm cuam tshuam (xws li, kev txhawb nqa rau kev txav tshuab, crane khiav). • Tsim cov cai los yog cov cai tswj xyuas cov qib toughness (ib qho hauv cov txuas hniav, sab ntug dej hiav txwv, los yog cua-cov qauv raug pom). • Koj xav tau cov khoom zoo sib xws, tshwj xeeb tshaj yog nyob rau hauv cov ntu tuab. • Vuam yog qhov dav, raws li cov hlau tua feem ntau coj tus cwj pwm zoo dua thaum vuam. |
Cov ntsiab lus
Xav txog S275JR raws li tus qauv, qib kev lag luam rau kev siv dav hauv cov xwm txheej zoo.
Xav txog S275J2 raws li qib kev ntseeg tau zoo dua qub uas them tus nqi me me rau kev lees paub qhov hnyav hauv qhov txias thiab ntau hom khoom zoo ib yam.Rau cov qauv tseem ceeb, cov khoom siv welded, lossis qhov project hauv thaj chaw nrog lub caij ntuj no txias, S275J2 (lossis txawm tias hnyav dua S275J2+N qhov kev xaiv zoo dua qub.)
1. Lub ntsiab lus ntawm "J2" hauv S275J2 yog dab tsi?
Lub "J2" qhia tias cov hlau raug tua tag nrho (deoxidized) thiab muaj qhov tshwj xeeb cuam tshuam qhov hnyav ntawm tsawg kawg 27 joules thaum kuaj ntawm -20 degree. Lub "J" txhais tau hais tias tua cov hlau nrog lav qhov cuam tshuam tus nqi, thiab "2" qhia qhov ntsuas kub (-20 degree).
2. Lub zog tawm ntawm S275J2 yog dab tsi?
S275J2 muaj qhov tsawg kawg nkaus yield zog ntawm 275 MPa (rau cov khoom thickness Tsawg dua los yog sib npaug rau 16 hli). Tus nqi zog no txo qis me ntsis nrog nce thickness, raws li tau teev tseg hauv EN 10025-2.
3. S275J2 feem ntau siv nyob qhov twg?
Nws yog dav siv nyob rau hauv kev siv cov qauv siv xws li lub tsev thav duab, txuas hniav, thiab cov chaw lag luam uas muaj lub zog nruab nrab ua ke nrog cov tawv tawv zoo nyob rau hauv cov mob khaub thuas (txog -20 degree) yuav tsum tau.
4. S275J2 txawv ntawm S275JR li cas?
Qhov sib txawv tseem ceeb yog nyob rau hauv toughness thiab deoxidation: S275JR yog rimmed steel nrog tej yam kev sim tsuas yog nyob rau ntawm +20 degree, thaum S275J2 yog tua hlau nrog guaranteed cuam tshuam tus nqi ntawm -20 degree, ua rau nws haum rau txias txias.
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.