1. ST37-2 - Cov Khoom Siv Hauv Paus (Historical DIN Qib)
TSI 37-2yog qib steel txhais nyob rau hauv tam sim no loj supersededTIAB SA 17100txheem (thiab kuj pom nyob rau hauv cov lausTIAB SA 1629rau lub cev).
Kev txiav txim siab "ST37-2":
St:Sawv rau"Stahl"(German rau Hlau) siv rau kev tsim qauv.
37:Qhia qhovyam tsawg kawg nkaus tensile zogyog370 MPa rau(≈ 54 ksi).Qhov tseem ceeb, qhov no yogtensilezog, netawm loszog.Qhov tsawg kawg nkaus tawm lub zog (ReH) yog kwv yees li 235 MPa.
-2:Lub ntsiab lus no yog qhov tseem ceeb. Nws qhia txog qhovcuam tshuam lub zog (toughness) yuav tsum tau:
"2"txhais tau hais tias cov hlau raug kuaj rau kev cuam tshuam lub zog (Charpy V-notch) ntawm qhov kub ntawm+20 degree. A "1" txhais tau tias tsis muaj kev cuam tshuam, thiab "3" txhais tau tias kev sim ntawm -20℃.
Niaj hnub nimno sib npaug:Tus neeg ua tiav ncaj qha hauv European EN system yogS235J0(los yog S235J2 kom zoo dua toughness) los ntawmTS EN 10025-2.
S235J0muaj ibYam tsawg kawg nkaus tawm lub zog ntawm 235 MPathiab raug kuaj ntawm0 degree, ua rau nws me ntsis tougher thiab tswj niaj hnub sib npaug.
2. Longitudinally Submerged Arc Welded (L-SAW) Yeeb Nkab - Cov Txheej Txheem
Cov txheej txheem tseem zoo ib yam: siab -zoo longitudinal seam vuam ntawm submerged arc. Qhov kev xaiv ntawm ST37-2 txhais tau hais tias siv cov txheej txheem no los tsim cov yeeb nkab txhim khu kev qha los ntawm qhov yooj yim, weldable structural steel.
3. Kev Tswj Xyuas Cov Qauv Khoom
Cov yeeb nkab nws tus kheej yuav raug tsim los rau cov khoom lag luam. Rau ST37-2, qhov tseem ceeb tshaj plaws ntawm keeb kwm thiab cov qauv siv tseem yog:
Qauv TSIS MUAJ: DIN 2458 "Longitudinally welded steel hlab rau txhua yam thiab dav dav engineering lub hom phiaj."Cov qauv no qhia meej meej thiab tswj cov raj ua los ntawm cov qib steel zoo liSt 37-0, St 37-2, St 44-2, St 52-3.
Lwm yam ntsiab lus:ST37-2 kuj tau siv los ua cov khoom siv raj qib hauv qab qubTIAB SA 1629(seamless thiab welded raj).
Ua kom tiav Technical Specification (Legacy Format)
Ib qho kev qhia tshwj xeeb classic, tseem pom nyob rau hauv ntau cov ntaub ntawv kev tshaj lij thiab kev txiav txim, yuav zoo li no:
Longitudinally Submerged Arc Welded (L-SAW) Cov yeeb nkab steel
Product Standard: TIAB SA 2458
Steel Qib: DIN 17100 / DIN 1629 St 37-2
Qhov Loj:Ø 323.9 mm x 8.0 mm WT (los yog raws li DIN 2458 lub rooj loj)
Delivery condition:Feem ntauraws li welded(+U rauungluht, tsis paub). Rau cov khoom zoo dua,normalized(+N) tuaj yeem teev tau.
Kev kuaj:Raws li DIN 2458, feem ntau suav nrog:
Tensile xeem (Rm ≈ 370 MPa, ReH min. 235 MPa)
Khoov xeem ntawm lub weld seam(Yuav tsum tau ua pov thawj ntawm weld ductility).
Flattening xeemlos yognplhaib expansion test.
Tsis yog -kev kuaj kev puas tsuaj (piv txwv li, eddy tam sim no) tej zaum yuav raug teev tseg, tab sis Ultrasonic Testing (UT) yog qhov yuav tsum tau ua ntxiv.
Ntawv pov thawj: Daim Ntawv Pov Thawj Ua Haujlwm (Werkzeugnis)Ib qho qub DIN 50049, los yog nws niaj hnub EN 10204 sib npaug.
Kev sib piv tseem ceeb & Cov ntsiab lus niaj hnub
| Feature | ST37-2 (DIN 17100) | Niaj hnub nimno sib npaug S235J0 / J2 (EN 10025-2) | Nco tseg |
|---|---|---|---|
| Lub zog tseem ceeb | Tensile: 370 MPa Min | Tawm tswv yim: 235 MPa MinTensile: 360-510 MPa | ST37 muaj npe rau tensile; EN cov qhab nia muaj npe rau cov txiaj ntsig. |
| Yield zog | ~ 235 MPa (tau txais) | 235 MPa (ua haujlwm min.) | Yeej tseem zoo tib yam hauv kev xyaum. |
| Impact Test | +20 degree(rau "-2") | 0℃(J0) lossis -20℃(J2) | Cov qib niaj hnub no feem ntau muaj cov kev cai nruj dua. |
| Txuj | DIN 17100 (kwv yees) | TS EN 10025-2 (Tam sim no) | Txhua qhov haujlwm tshiab yuav tsum qhia qib EN. |
Tej kev siv
ST37-2 L-SAW kav yog siv nyob rau hauv kev siv cov qauv thiab txhua yam uas lub zog siab tsis yog qhov tseem ceeb, tab sis txhim khu kev qha weldability thiab formability yog:
Kev tsim kho dav dav:Fencing posts, handrails, lub teeb kev txhawb nqa.
Mechanical Engineering:Guards, thav duab, vaj tse rau industrial machinery.
Tsawg-Cov Khoom Siv Hluav Taws Xob:Cov kab dej, cov kav dej, tsis yog - cov txheej txheem tseem ceeb.
Piling thiab Foundation:Rau lub teeb rau nruab nrab loads.
Kev ceeb toom tseem ceeb rau cov phiaj xwm niaj hnub
Obsolete Specification:Thaum ST37-2 yeeb nkab tseem tsim thiab muaj, nws yog ib qhoobsolete npe. Rau kev tsim kho tshiab lossis cov haujlwm uas yuav tsum tau muaj ntawv pov thawj niaj hnub (CE cim, thiab lwm yam), lubEN 10219 (S235J2H)los yogEN 10217 (P235)Cov qauv nrog lawv cov qib EN 10025 steel yuav tsum tau teev tseg.
Kev txhais lus yog qhov tseem ceeb:Thaum koj pom "ST37-2," koj tuaj yeem ntseeg siab txhais nws rau"S235J0"rau cov khoom sib npaug, tab sis koj yuav tsum nrhiav qhov tseebniaj hnub khoom txheem(e.g., EN 10219 rau cov hlab ntsha).
Cov ntsiab lus
ST37-2 Longitudinally Submerged Arc Vuam Yeebhais txog:
Ib qho dav dav - lub hom phiaj cov yeeb nkab ua los ntawm cov pa roj carbon steel, longitudinally welded los ntawm cov txheej txheem SAW, ua raws li cov qauv qub qub hauv German xws li DIN 2458 thiab DIN 17100, nrog lub zog tensile yam tsawg kawg nkaus ntawm 370 MPa thiab cuam tshuam toughness kuaj ntawm chav tsev kub.
Txawm hais tias tseem yog cov khoom lag luam siv tau thiab nkag siab zoo, rau engineering, kev yuav khoom, thiab kev tsim kho hauv xyoo pua 21st, qhov kev qhia tshwj xeeb no yuav tsum yogHloov kho rau nws qhov sib npaug EN niaj hnub (xws li S235J2H rau EN 10219-2)los xyuas kom meej ua raws li cov cai tam sim no, cov ntaub ntawv traceability, thiab kev ua haujlwm lav.
