S890QL1 (Cov Khoom Naj Npawb 1.8925) yog European tus qauv siab -lub zog, nplua-cov qauv steel hlau. Nws yog quenched thiab tempered (+ QT) alloyed tshwj xeeb hlau tswj los ntawm EN 10025-6 tus qauv.
Cov yam ntxwv tseem ceeb
Lub zog siab: Nws muaj qhov tsawg kawg nkaus tawm lub zog ntawm 890 MPa (rau cov tuab tsawg dua lossis sib npaug li 50mm).
Ntxiv Toughness: Cov lus "L1" qhia qhov tshwj xeeb qis -kub toughness, nrog lav qhov cuam tshuam tsawg kawg nkaus lub zog (feem ntau 30J-40J) ntawm qhov kub qis li -60℃(-76℃F).
Weldability: Txawm tias nws lub zog siab, nws yog tsim los rau weldability nyob rau hauv siab -load steel siv.
Technical Specifications
| Khoom | Tus nqi/qhov xwm txheej |
|---|---|
| Khoom Naj Npawb | 1.8925 |
| Txuj | TS EN 10025-6 |
| Min. Yield zog | 890 N / mm² (txog 50mm thickness) |
| Tensile zog | 940 - 1100 MPa |
| Min. Impact Temp. | -60 degree |
| Kev Xa Khoom | Quenched thiab Tempered (+ QT) |
Tej kev siv
S890QL1 feem ntau yog siv qhov kev txo qhov hnyav yog qhov tseem ceeb thiab kev ua haujlwm hnyav (qhov huab cua txias lossis kev ntxhov siab siab) xav tau:
Lifting Equipment: Mobile crane booms thiab hnyav-cov khoom nqa nqa.
Infrastructure: Choj Cheebtsam thiab kev loj kev tsim kho.
Mining & Earthmoving: Chassis, dumper lub cev, thiab lub ru tsev txhawb nqa.
Lub Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hwj Hnyav
Cov txheej txheem vuam dab tsi yuav tsum tau ua rau S890QL1?
Vuam S890QL1 yuav tsum tau nruj nruj thiab tswj cov txheej txheem los khaws nws lub zog ultra- siab zog (890 MPa tawm los) thiab lav qis- kub toughness (-60℃/ Ntau dua lossis sib npaug rau 40 J cuam tshuam lub zog). Cov txheej txheem yog tshwj xeeb heev thiab yuav tsum ua raws li cov txheej txheem vuam tsim nyog (WPS). Nov yog cov kev cai tseem ceeb:
1. Pre-Weld Essentials
Cov Txheej Txheem Tsim Nyog: WPS yuav tsum tsim nyog los ntawm kev sim (xws li EN ISO 15614-1), suav nrog kev sim tshuab (tensile, cuam tshuam ntawm -60 degree, hardness) thiab macro / micro kuaj.
Khoom siv & Consumable Certification: Txheeb xyuas cov hlau hauv qab (EN 10025-6 S890QL1) thiab cov khoom siv hlau ua tau raws li cov qauv. Siv cov khoom siv hluav taws xob tsawg-hydrogen nkaus xwb.
Kev Npaj Ua Ntej: Machined bevels nrog cov npoo du. Tshem tawm tag nrho cov kab mob (xeb, roj, noo noo) yam tsawg 30 hli ntawm qhov sib koom ua ke.
2. Filler Hlau Xaiv
Hom: Yuav tsum tau qis-hydrogen electrodes / hlau. Kev xaiv ntau:
SMAW: Basic-coated electrodes (piv txwv li, E 89 6 B 42 H5 per EN ISO 18275).
GMAW/FCAW: Hlau-cored lossis flux-cored xov hlau (piv txwv li, T 89 6 Ni2CrMoTi-B H5 per EN ISO 16834-A).
Strength Matching: Feem ntau undermatching muab tub lim hlau (piv txwv li, 770-820 MPa yield) raug xaiv los txhim kho weld hlau toughness thiab txo qhov kev pheej hmoo tawg, tshwj tsis yog tsim tshwj xeeb yuav tsum muaj zog sib xws.
3. Qhov tseem ceeb Vuam Parameters
Preheat & Interpass Kub:
Preheat: Feem ntau 150-200℃(siab dua rau cov ntu tuab lossis siab ceev). Yuav tsum tau siv uniformly.
Interpass Range: Khaws preheat raws li qhov tsawg kawg nkaus, tab sis tsis txhob tshaj 200-225℃kom tsis txhob HAZ softening ntau dhau.
Thaum tshav kub kub input: yuav tsum nruj tswj nyob rau hauv ib tug tsim nyog ntau yam (feem ntau 0.5-1.2 kJ / mm).
Tsawg dhau → txaus ntshai, nkig HAZ.
Siab dhau → ntau dhau ntawm cov qoob loo loj hlob thiab HAZ softening, degrading toughness.
Cov txheej txheem: Siv cov hlua khi hlua khi los yog nqaim weave. Tsis txhob ntev arcs. Xyuas kom tag nrho fusion, tshwj xeeb tshaj yog nyob rau ntawm phab ntsa.
4. Kev Kho Mob Tom Qab Weld
Post‑Weld Heat Treatment (PWHT): Often mandatory for thicknesses >20 mm los yog nruj heev pob qij txha. Kev coj ua zoo ib yam yog kev ntxhov siab ntawm 550-600℃kom txo qis kev ntxhov siab, npau taws rau HAZ, thiab rov ua kom tawv.
Slow Cooling: Insulate lub vuam tom qab vuam kom tso cai rau maj mam txias rau ambient kub, tiv thaiv hydrogen entrapment thiab tawg.
5. Kev Tshawb Fawb & Kev Ntsuas
Non-Destructive Testing (NDT): Ultrasonic testing (UT) los yog magnetic particle testing (MT) feem ntau yuav tsum tau rau txhua qhov tseem ceeb welds.
Hardness Survey: Txhawm rau txheeb xyuas HAZ hardness tseem nyob hauv qhov txwv (feem ntau Tsawg dua lossis sib npaug rau 380 HV10).
Charpy Impact Testing: Cov kev xeem tsim nyog yuav tsum muaj cov kev ntsuam xyuas cuam tshuam ntawm -60℃ntawm vuam hlau thiab HAZ.
1. S890QL1 steel yog dab tsi?
S890QL1 yog ib qho ultra- siab- lub zog quenched thiab tempered structural steel nrog qhov tsawg kawg nkaus yield zog ntawm 890 MPa, tau ntawv pov thawj rau tshwj xeeb tej yam toughness ntawm kub li tsawg li -60℃.
2. "QL1" txhais li cas hauv S890QL1?
"QL1" qhia tias cov hlau tsim nyog rau qis- qhov kev pabcuam kub mus rau -60 degree, nrog rau qhov tsawg kawg nkaus Charpy cuam tshuam lub zog ntawm 40 J ntawm qhov kub ntawd.
3. S890QL1 feem ntau siv nyob qhov twg?
Nws yog siv nyob rau hauv huab cua Arctic engineering, offshore platforms hauv cheeb tsam polar, cov khoom tseem ceeb ntawm cov dej khov-cov nkoj hauv chav kawm, thiab cov cuab yeej ua tub rog siab heev tsim los rau kev sib sib zog nqus- txias ua haujlwm.
4. S890QL1 txawv ntawm S890QL li cas?
S890QL1 tau lees tias muaj kev cuam tshuam ntau dua (Ntau dua lossis sib npaug ntawm 40 J) ntawm qhov kub qis (-60 degree), thaum S890QL feem ntau raug kuaj ntawm -40℃nrog Ntau dua lossis sib npaug rau 27 J qhov xav tau.
5. Cov txheej txheem vuam dab tsi yuav tsum tau ua rau S890QL1?
Vuam yuav tsum nruj preheating (150-200 degree), qis- hydrogen consumables, tswj cov cua sov input, thiab feem ntau tom qab vuam cua sov kho kom tsis txhob tawg thiab khaws toughness.
6. Puas yog S890QL1 corrosion resistant?
Tsis yog, S890QL1 tsis yog corrosion-tiv taus thiab yuav tsum muaj cov txheej txheem tiv thaiv (xws li, pleev xim, galvanizing) siv rau hauv qhov chaw corrosive lossis raug.
7. Cov qauv twg siv rau S890QL1 steel?
Nws tau txhais los ntawm European tus qauv EN 10025-6, nrog rau cov kev xav tau ntxiv rau kev ntsuas kev cuam tshuam ntawm -60℃thiab ntawv pov thawj rau EN 10204 Hom 3.1.
8. S890QL1 puas tuaj yeem ua tau yooj yim?
Tsis yog, machining S890QL1 yog qhov nyuaj heev vim nws cov hardness siab; nws yuav tsum muaj cov cuab yeej carbide uas muaj zog, siab -siab coolant, thiab optimized txiav tsis.
9. Tus nqi ntau ntawm S890QL1 steel phaj yog dab tsi?
S890QL1 yog kim heev, feem ntau yog li ntawm € 3,000 txog € 6, 000+ ib tuj, nyob ntawm seb thickness, ntau npaum li cas, thiab daim ntawv pov thawj yuav tsum tau.
Tag nrho cov specification thiab cov ntsiab lus muaj nyob rau ntawm kev thov. Cov ntaub ntawv saum toj no yog muab rau kev taw qhia nkaus xwb. Rau kev tsim tshwj xeeb thov hu rau peb cov neeg ua haujlwm muag khoom.
