1. S275JR Steel yog dab tsi?
Teb:S275JR yog ib qho tsis yog - alloy structural steel qib raws li European tus qauv EN 10025-2. Lub "S" sawv cev rau "Structural Steel," "275" qhia qhov tsawg kawg nkaus lub zog ntawm 275 MPa ntawm thicknesses Tsawg dua los yog sib npaug rau 16 hli, thiab "JR" qhia txog lub zog ntawm 27 J ntawm chav tsev kub (+20℃).
2. Dab tsi yog cov khoom tseem ceeb ntawm S275JR steel yeeb nkab?
Teb:Cov khoom tseem ceeb ntawm cov khoom sib txawv nrog cov tuab. Rau seem Tsawg dua lossis sib npaug rau 16mm:
Yield zog (ReH):Tsawg tshaj . 275 MPa
Tensile zog (Rm):410 - 560 MPa
Yam tsawg kawg Elongation:Nws txawv, tab sis feem ntau nyob ib ncig ntawm 23% (nyob ntawm seb tus qauv thiab thickness).
3. Cov tshuaj muaj pes tsawg leeg ntawm S275JR yog dab tsi?
Teb:Cov muaj pes tsawg leeg yog capped los xyuas kom meej weldability thiab mechanical zog. Cov txiaj ntsig siab tshaj plaws rau tsis yog-alloyed zoo (los ntawm qhov hnyav %) feem ntau yog:
Cov pa roj carbon (C):Tsawg dua lossis sib npaug li 0.21%
Manganese (Mn):Tsawg dua lossis sib npaug li 1.50%
Silicon (Si):Tsawg dua lossis sib npaug li 0.55%
Phosphorus (P):Tsawg dua lossis sib npaug li 0.035%
Sulfur (S):Tsawg dua lossis sib npaug li 0.035%
4. Puas yog S275JR steel yeeb nkab weldable?
Teb:Yog lawm, S275JR feem ntau suav hais tias muaj qhov zoo weldability vim nws qhov sib npaug ntawm cov pa roj carbon tsawg (CEV). Cov txheej txheem vuam zoo li MMA (SMAW), MIG/MAG (GMAW), thiab TIG (GTAW) tuaj yeem siv yam tsis muaj ua ntej- cua sov rau feem ntau cov qauv tuab, txawm tias cov txheej txheem tshwj xeeb yuav tsum ua raws li ib txwm.
5. Dab tsi yog qhov sib npaug ntawm S275JR hauv lwm cov qauv?
Teb:Ib qho sib npaug thiab sib npaug heev yogASTM A36carbon hlau. Txawm li cas los xij, nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias thaum cov khoom siv kho tshuab zoo sib xws, cov tshuaj muaj pes tsawg leeg thiab cov kev xeem yuav txawv ntawm EN thiab ASTM cov qauv. Lwm qhov sib npaug ntxhib yog JIS G3101 SS400.
