S355JR txhais li cas?
S355JR yog ibEuropean txheem structural steeldav siv nyob rau hauv kev tsim kho, choj tsev thiab machinery manufacturing. Lub npe yog decoded raws li nram no:Sqhia tias cov hlau yog cov qauv hlau rau cov qauv European;355qhia qhov tsawg kawg nkaus tawm lub zog ntawm 355 MPa;Jqhia txog kev xa khoom zoo; thiabRqhia tau hais tias qhov kev ntsuam xyuas cuam tshuam yog ua nyob rau hauv chav tsev kub, sib xws rau qhov tsawg kawg nkaus absorbed zog ntawm 27 J ntawm 20 degree. Cov qib muaj qhov sib npaug zoo ntawm lub zog thiab tawv, ua rau nws haum rau vuam thiab machining, thiab nws tau txais txiaj ntsig rau nws qhov kev ua tau zoo tag nrho.
Hardness ntawm S355JR
Lub hardness ntawm S355JR square tubing feem ntau yog los ntawm130-170 HB(Brinell hardness), uas ua rau nws haum rau vuam thiab machining. Hardness tsis yog ib qho kev lees paub hauv EN 10025-2 tus qauv khoom, tab sis tus nqi saum toj no qhia txog qhov nyuaj ntawm qhov sib thooj rau qib siab ntawm qib. Hardness tuaj yeem sib txawv nrog ntu tuab thiab ua keeb kwm: raws li qhov tuab nce, lub zog thiab kev cuam tshuam tsis zoo yuav txo qis, thiab thicknesses saum 80 hli, tshwj xeeb tshaj yog 100 hli thiab 120 hli, yog xav tau ntau dua nyob rau hauv cov nqe lus ntawm kev tsim cov txheej txheem tswj.
Tshuaj muaj pes tsawg leeg
Cov tshuaj muaj pes tsawg leeg ntawm S355JR yog tswj los muab lub zog xav tau nrog zoo weldability. Cov kev txwv hauv qab no yog raug rau cov tuab txog li 40 hli raws li EN 10025-2.
| Element | Txwv |
|---|---|
| Cov pa roj carbon (C) | 0.24% max |
| Silicon (Si) | 0.55% max |
| Manganese (Mn) | 1.60% max |
| Phosphorus (P) | 0.035% max |
| Sulfur (S) | 0.035% max |
| Nitrogen (N) | 0.012% max |
| Copper (Cu) | 0.55% max |
Mechanical Properties
Cov txheej txheem tseem ceeb ntawm S355JR yog lub zog tawm los thiab lub zog tensile. Rau thicknesses txog li 16 hli, qhov tsawg kawg nkaus yield zog yog 355 MPa, thiab lub tensile zog ntau yam yog 470 rau 630 MPa. Elongation yog qhov tsawg kawg nkaus ntawm 22% rau thicknesses txog 40 hli. Qib tseem ua tau raws li qhov yuav tsum tau muaj ntawm 27 J ntawm 20℃hauv Charpy V-qhov ntsuas ntsuas.
| Khoom | Tus nqi |
|---|---|
| Brinell hardness (zoo) | 130 - 170 HB |
| Yield zog, min (t Tsawg dua lossis sib npaug li 16 hli) | 355 MPa rau |
| Tensile zog | 470 - 630 MPa |
| Lub zog cuam tshuam (Charpy V-notch) | 27 J ntawm 20 degree |
| Thickness ntau | Txog li 250 mm |
S355JR hauv Square thiab Rectangular Hollow Sections
S355JR steel feem ntau yog tsim rau hauvsquare hollow seem (SHS)thiab lub voj voos hollow seem (RHS) los ntawm kev sib sau txias thiab vuam, nrog rau seem hollow sib npaug S355JRH raws li EN 10210. Lub kaw ntoo khaub lig- ntu ntawm SHS muab kev tiv thaiv zoo heev rau torsion thiab compression nrog lub zog siab - rau - hnyav piv 5JR, uas yog vim li cas SHS siv dav hauv kab 5. trusses, thav duab, txuas hniav thiab cov khoom siv kho tshuab.
Cov lus nug nquag
Lub hardness ntawm S355JR yog dab tsi?
S355JR feem ntau ntsuas txog 130-170 HB hauv Brinell hardness, sib xws rau nws qib zog. Hardness nws tus kheej tsis yog tus nqi lees paub hauv EN 10025-2.
Puas yog S355JR xav tau kev sim cuam tshuam?
Yog lawm. R nyob rau hauv lub npe txhais tau hais tias cov qib raug kuaj rau tej yam toughness nyob rau hauv chav tsev kub, nrog tsawg kawg yog 27 J ntawm 20 degree.
Qhov txawv ntawm S355JR thiab S355J2 yog dab tsi?
Lub ntsiab lus qhia txog qhov ntsuas qhov ntsuas kub: JR xav tau 27 J ntawm 20 degree, thaum J2 xav tau 27 J ntawm -20 degree, ua J2 haum rau qhov chaw txias dua.
S355JR puas tuaj yeem welded?
Yog lawm. S355JR muaj qhov zoo weldability nrog cov txheej txheem txheem xws li MIG, MAG thiab arc vuam, uas yog ib qho laj thawj uas nws tau siv dav hauv kev tsim khoom.
S355JR siv rau dab tsi?
Nws yog siv rau hauv kev tsim vaj tsev, txuas hniav, platforms, machinery thav duab, cranes thiab hollow seem cov tswv cuab xws li kab thiab trusses.