Qhov sib npaug Suav ncaj qha ntawm S355J0 (EN 10025-2) yog Q355B raws li GB / T 1591-2018.
Txawm li cas los xij, qhov sib npaug no yuav tsum muaj kev qhia meej tseem ceeb txog qhovcuam tshuam toughness ntsuas kub, uas yog lub ntsiab lus tseem ceeb ntawm qhov sib txawv ntawm cov qauv.
1. Direct Qib sib npaug
| Qib European (EN) | Suav sib npaug (GB / T) | Txuj |
|---|---|---|
| S355J0 | Q355B | GB/T 1591-2018(High lub zog tsis tshua muaj alloy qauv steels) |
Kev txiav txim siab Suav Qib Q355B:
Q:"Qu" (屈) rau Yield Strength.
355:Yam tsawg kawg nkaus tawm lub zog hauv MPa (thickness Tsawg dua lossis sib npaug li 16 hli).
B:Qib Qib, qhia txog kev sim ntawm qhovchav tsev kub (20 degree).
2. Qhov txawv ntawm qhov tseem ceeb: Kev ntsuas qhov ntsuas kub
Qhov no yog qhovtseem ceeb tshaj kev tsis sib xwsnruab nrab ntawm ob qib "sib npaug".
S355J0 (EN): Yuav tsum tauCharpy V-ntiv tes ntsuas ntawm0 degree. Tsawg zog:27 J.
Q355B (GB): Yuav tsum tauCharpy V-ntiv tes ntsuas ntawm+20℃(Room Kub). Tsawg zog:Ntau dua lossis sib npaug li 34 Jrau thickness Tsawg dua los yog sib npaug li 40mm.
Qhov teeb meem:q355b yogtsis xav tau los ntawm tus qauvyuav tsum tau kuaj ntawm 0 degree. Yog li ntawd, thaum nws phim lub zog, nwstsis tuaj yeem lav qhov qis -kub (0 degree) toughnessua 355j0.
3. Yuav ua li cas qhia qhov tseeb "S355J0 sib npaug" hauv Suav teb
Txhawm rau kom tau txais cov khoom sib twob lub zog thiab 0℃cuam tshuam toughnessntawm S355J0, koj muaj ntau txoj kev xaiv:
Kev xaiv 1: Qhia Q355B nrog ntxiv 0℃cuam tshuam qhov xav tau
Qhov no yog txoj hauv kev zoo tshaj plaws thiab siv tau. Hauv daim ntawv xaj khoom, qhia:
Khoom siv: Q355B raws li GB / T 1591-2018.
Yuav tsum tau ua ntxiv: Charpy V- qhov ntsuas qhov cuam tshuam ntawm 0℃yuav tsum ua. Qhov nruab nrab cuam tshuam lub zog tsawg kawg nkaus yuav tsum yog 27 Joules (longitudinal).
Kev xaiv 2: Siv qib siab Suav Zoo
Q355C:Kuaj ntawm0 degree(Min. zog: Ntau dua lossis sib npaug rau 34 J).Qhov no yog qhov ze tshaj plawstxheemsib tw.Nws yeej muaj ib tugntau zog yuav tsum tau (34J vs 27J)ntawm 0 degree, ua rau nws technically superior.
Q355D:Kuaj ntawm-20 degree.
Q355E:Kuaj ntawm-40 degree.
Kev xaiv 3: Siv tus qauv qub GB (tseem lees paub)
Tus qauv qubGB/T 1591-2008muaj qibQ345B, uas tau sim ntawm+20 degree, thiabQ345C, uas tau sim ntawm0 degree. Ntau lub mills thiab fabricators tseem paub txog qhov no.
Q345C (GB/T 1591-2008)yog keeb kwm ncaj qha rau S355J0.
4. Cov lus sib piv kom pom tseeb
| Khoom | S355J0 (EN 10025-2) | Q355B (GB/T 1591-2018) | Q355C (GB/T 1591-2018) |
|---|---|---|---|
| Min. Yield Str. | 355 MPa (t Tsawg dua lossis sib npaug li 16mm) | 355 MPa (t Tsawg dua lossis sib npaug li 16mm) | 355 MPa (t Tsawg dua lossis sib npaug li 16mm) |
| Tensile Str. | 470-630 MPa | 470-630 MPa | 470-630 MPa |
| Impact Test Temp. | 0 degree | +20 degree | 0 degree |
| Min. Impact Zog | 27 J | Ntau dua lossis sib npaug li 34 J(ntawm +20 degree) | Ntau dua lossis sib npaug li 34 J(ntawm 0 degree) |
| Muaj tseeb Equivalence | Benchmark | Tsis sib npaug(tsis raug kuaj temp) | Superior sib npaug(tib temp, siab zog) |
5. Cov lus pom zoo rau kev yuav khoom
Txhawm rau zam qhov yuam kev thiab xyuas kom koj tau txais cov khoom raug:
Rau kos duab / specs hauv Suav teb:SivQ355CYog tias koj xav tau qhov lav 0℃toughness ntawm S355J0. Nws yog ib qho kev nyab xeeb, kev xaiv tus qauv.
Thaum sib txuas lus nrog ib tug Suav zeb/siv:Ib txwm hais meej meej:
* "Peb xav tau cov khoom sib npaug rau European qib S355J0, nrog Charpy cuam tshuam kev xeem ntawm 0℃yam tsawg kawg nkaus 27J. Thov muab Q355C ib GB / T 1591 lossis sib npaug nrog daim ntawv pov thawj zeb uas qhia txog 0℃cuam tshuam cov txiaj ntsig."*
Ib txwm xav tau daim ntawv pov thawj Mill Test (MTC):Txheeb xyuas nws teev cov tshuaj muaj pes tsawg leeg thiab cov khoom siv kho tshuab,suav nrog cov kev ntsuam xyuas cuam tshuam ntawm qhov ntsuas kub.
Cov ntsiab lus
CovNominal Suav sib npaug ntawm S355J0 yog Q355B, tab sis qhov no tsis tau lees tias qhov qis qis -kub toughness. Kom tau ibqhov tseeb technical sib npaug, koj yuav tsum qhiaQ355C(uas yog qhov nyuaj dua), lossis qhia meej ntxiv qhov ntxiv 0℃cuam tshuam kev xeem yuav tsum tau ua rau Q355B xaj. Ib txwm qhia meej txog qhov yuav tsum tau ua kom tsis txhob tau txais cov khoom siv uas tsuas yog tsim nyog rau kev siv qhov kub thiab txias.