Txheej txheem cej luam
S355J2Hyog ib qho zoo -zoo,tsis yog - alloystructural steel qib txhais los ntawm European tus qauvTS EN 10210. Qhov "H" tshwj xeeb qhia tias nws tau muab los ua aNtug Hollow(cov yeeb nkab lossis cov yeeb nkab). Nws yog lub npe hu rau nws zoo heev ua ke ntawm lub zog, toughness, thiab weldability.
Kev tawg ntawm lub npe
Lub npe "S355J2H" tuaj yeem tawg kom nkag siab txog nws cov khoom:
S: Sawv rau"Structural Hlau".
355: Qhia covyam tsawg kawg nkaus yield zog(ReH) ntawm chav tsev kub rau thicknesses Tsawg dua los yog sib npaug li 16 hli. Tus nqi yog355 MPa rau(los yog 355 N / mm²). Qhov no yog qhov taw qhia tseem ceeb ntawm nws lub zog.
J2: Denotes lubcuam tshuam toughness(Charpy V-kev ntsuas ntsuas) ntawm -20℃.
J: txhais tau tias cov hlau raug kuaj.
2: Qhia qhov ntsuas kub ntawm -20℃thiab qhov tsawg kawg nkaus lub zog nqus ntawm27 jul.
H: Qhia tias cov khoom yog aNtug Hollow(piv txwv li, ncig, square, los yog cov kav dej / raj).
Cov yam ntxwv tseem ceeb & Mechanical Properties
Cov khoom yog teev nyob rau hauvTS EN 10210-1. Cov hauv qab no yog cov yam ntxwv yam tsawg kawg nkaus rau cov tuab tuab:
| Khoom | Tus nqi (rau thickness Tsawg dua lossis sib npaug li 16 hli) | Sau ntawv |
|---|---|---|
| Yam tsawg kawg Yield Strength (ReH) | 355 MPa rau | Qhov no yog qhov kev ntxhov siab uas cov khoom pib deform plastically. Nws yog qhov kev tsim qauv tseem ceeb rau cov khoom siv hauv tsev. |
| Tensile zog (Rm) | 470 - 630 MPa | Qhov siab tshaj plaws ntawm cov khoom siv tuaj yeem tiv taus thaum raug ncab. |
| Elongation ntawm Break | ~ 22% (nws txawv ntawm thickness) | Kev ntsuas ntawm ductility (ntau npaum li cas nws tuaj yeem ncab ua ntej tawg). |
| Impact Zog (KV) | Ntau dua lossis sib npaug li 27 J ntawm -20 degree | Qhov no ua kom zoo toughness rau siv nyob rau hauv txias los yog dynamic loading ib puag ncig. |
Nco tseg:Mechanical zog, tshwj xeeb tshaj yog tawm los thiab tensile lub zog, txo me ntsis raws li cov khoom thickness nce.
Tshuaj muaj pes tsawg leeg
Cov tshuaj muaj pes tsawg leeg (los ntawm qhov hnyav %) yog nruj tswj nyob rau hauvTS EN 10210-1. Ib qho piv txwv yog:
Cov pa roj carbon (C):Tsawg dua lossis sib npaug li 0.22% (Cov ntsiab lus qis carbon zoo txhim kho weldability)
Manganese (Mn):Tsawg dua lossis sib npaug li 1.60%
Silicon (Si):Tsawg dua lossis sib npaug li 0.55%
Phosphorus (P):Tsawg dua lossis sib npaug li 0.035% (Impurity, khaws cia qis)
Sulfur (S):Tsawg dua lossis sib npaug li 0.035% (Impurity, khaws cia qis)
Qhov sib npaug sib npaug no muab qhov xav tau lub zog thaum tuav cov weldability zoo thiab formability.
Sib piv nrog Cov Qib Zoo sib xws
Nws yog ib qho zoo sib piv S355J2H nrog rau lwm cov qauv hlau zoo sib xws:
vs S355J2H vs S355J2H:
S355J2Hyog raukub-ua tiav hollow seem(EN 10210).
S355J2Hyog rautxias- ua hollow seem(EN 10219). Cov tshuaj lom neeg muaj pes tsawg leeg thiab cov khoom siv kho tshuab zoo sib xws, tab sis cov txheej txheem tsim khoom sib txawv, uas tuaj yeem ua rau muaj kev hloov pauv me ntsis hauv kev ntxhov siab thiab qhov ntev ntev.
vs S355JR:
S355JR yog cov txheej txheem steel phaj / ntu qib. Nws cuam tshuam toughness yog kuaj ntawm+20 degree(chaw kub), ua rau nws tsis haum rau qis- daim ntawv thov kub qhov twg S355J2H (-20℃toughness) yuav tsum tau.
ASTM A500 Qib C:
A500 gr. Cyog ib hom American qauv rau cov qauv tubing. Nws cov lus qhia tsawg kawg nkaus lub zog yog 50 ksi (~ 345 MPa), uas yog ze heev rau S355J2H's 355 MPa. Lawv feem ntau xav txogqib pivrau ntau yam kev siv, txawm hais tias cov tshuaj lom neeg thiab toughness yuav tsum txawv.
Cov ntawv thov siv
S355J2H kav thiab hollow seem yog dav siv nyob rau hauv hnyav - cov ntaub ntawv cov qauv uas muaj zog thiab zoo toughness yog ib qho tseem ceeb:
Tsev thiab Kev Tsim Kho:Cov kab ke, kab teeb, thiab trusses nyob rau hauv cov tsev lag luam, industrial halls, thiab stadiums.
Cov choj:Raws li thawj load{0}}cov tswv cuab.
Khoom siv hnyav:Ncej thiab booms rau cranes, excavators, thiab lwm yam machinery.
Offshore thiab Marine Structures:Kev txhawb nqa thiab lub moj khaum uas yuav tsum tau ua haujlwm rau kev thauj khoom dynamic thiab txias txias.
General Mechanical Engineering:Rau thav duab, kev txhawb nqa, thiab chassis uas xav tau lub zog siab - rau - qhov hnyav piv.
Cov ntsiab lus
Hauv luv luv,S355J2H carbon steel yeeb nkabyog ib lub siab -lub zog, qis- alloy structural steel raj uas yog:
Yam tsawg kawg nkaus Yield Strength:355 MPa rau
Zoo Impact Toughness:27 J ntawm -20 degree
Weldability zoo heevthiab formability.
Primary Standard:TS EN 10210 (rau qhov kub-cov seem hollow tiav).
Nws yog qhov kev xaiv zoo tshaj plaws rau cov kws tsim khoom thiab cov neeg tsim qauv ua haujlwm ntawm cov qauv tseem ceeb uas yuav tsum tau tiv taus cov khoom hnyav thiab muaj peev xwm ua rau ib puag ncig qis.
