S690Qyog lub siab - lub zog ntawm cov qauv hlau paub txog nws cov kev sib xyaw ua ke zoo heev ntawm cov tawv nqaij, weldability, thiab tag nrho cov qauv kev ua haujlwm. Nws yog ib feem ntawm tsev neeg ntawm quenched thiab tempered steels tsim los muab kev ntseeg siab lub zog nyob rau hauv kev thov cov ntaub ntawv uas hnyav loads thiab nyuaj ib puag ncig tej yam kev mob. Cov khoom ua tiav nws cov khoom los ntawm kev ua tib zoo tswj cov txheej txheem thermomechanical kho uas ua kom zoo dua microstructure thiab txhim kho ob lub zog thiab ductility. Nws qhov toughness tseem nyob ruaj khov txawm tias qhov kub thiab txias, ua rau nws tsim nyog rau kev siv hauv cov qauv uas yuav tsum tau tiv taus dynamic lossis hnyav loading. Cov hlau tau lees paub dav dav rau nws lub peev xwm los txhawb kev tsim kho ntawm cov khoom sib zog, cov qauv siv tau zoo dua yam tsis muaj kev cuam tshuam kev nyab xeeb lossis ua haujlwm ntev. Nws yog feem ntau teev nyob rau hauv tej yaam num uas yuav tsum tau high load- bearing muaj peev xwm, xws li cov cav tov loj, cov khoom hnyav, thiab cov khoom siv loj. Nws txoj kev weldability tso cai rau kev tsim cov khoom siv tau zoo, thaum nws qhov kev ua haujlwm zoo ib yam ua kom lub sijhawm ntev - kev ntseeg siab hauv kev pabcuam.
Cov tshuaj muaj pes tsawg leeg ntawm S690Q steel raws li EN 10025-6,%
|
С |
Si |
Mn |
P |
S |
N |
B |
Cr |
Cu |
Mo |
Nb |
Ni |
Ti |
V |
Zr |
|
0,20 |
0,80 |
1,70 |
0,025 |
0,015 |
0,015 |
0,005 |
1,50 |
0,50 |
0,70 |
0,06 |
2,0 |
0,05 |
0,12 |
0,15 |
Mechanical zog ntawm S690Q steel
|
Nominal ntsuas, mm |
Yam tsawg kawg nkaus tawm lub zog, ReH (MPa) |
Qhov kawg tensile zog, Rm (MPa) |
Qhov tsawg kawg nkaus elongation ratio σ,% |
Brinell hardness tooj, HB (MPa) |
|
>3 Tsawg dua lossis sib npaug li 50 |
690 |
770-940 |
14 |
228-278 |
|
>50 Tsawg dua los yog sib npaug rau 100 |
650 |
760-930 |
14 |
225-276 |
|
>100 Tsawg dua los yog sib npaug rau 150 |
630 |
710-900 |
14 |
210-266 |
Analogues rau S690Q steel
|
Lub teb chaws Yelemees (DIN) |
SWB 690V |
|
Fabkis (AFNOR) |
E690T |
daim ntawv thov
Heavy machinery thiab cov cuab yeej siv cov qauv uas xav tau lub zog siab thiab tsis kam ua rau lub zog muaj zog
Crane booms thiab high-capacity lifting systems
Mining thiab quarrying khoom Cheebtsam
Choj qauv, tshwj xeeb tshaj yog nyob rau hauv hnyav loaded los yog hnyav-sensitive seem
Offshore cov qauv raug cuam tshuam rau ib puag ncig hnyav
Siab-muaj cov khoom siv hauv kev thov kev lag luam
Cov khoom siv thauj khoom hnyav xws li cov tsheb thauj khoom tshwj xeeb thiab cov tsheb thauj khoom
Qhov hnyav-optimized structural qhov chaw uas lub zog thiab weldability tseem ceeb heev
ua
1. Cov txheej txheem tsim khoom tseem ceeb
Kev kho cua sov (Q + T): Cov txheej txheem txhais tau hais tias yuav tsum ua kom sov cov hlau rau nws qhov kub thiab txias (900-960 degree), ua raws li cov dej nrawm nrawm los tsim cov qauv nyuaj martensitic. Tom qab ntawd nws yog tempered (feem ntau nyob ib ncig ntawm 600 degree) los kho ductility thiab toughness.
Microstructure: Kev ua haujlwm yog tsim los ua kom tau raws li tempered martensite lossis qis dua bainite microstructure, uas muab cov khoom muaj peev xwm zoo dua - cov kabmob muaj peev xwm piv rau cov hlau tsis zoo.
2. Fabrication thiab Machining
Thermal Cutting: S690Q tuaj yeem ua tiav ntawm nplaim taws, ntshav, lossis laser txiav. Rau cov phaj siab tshaj 50mm, preheating rau kwv yees li 75℃yog pom zoo kom tiv thaiv cov ntug tawg.
Txias txoj kev: Cov khoom siv yog tsim rau khoov yog tias lub vojvoog yog tsawg kawg 3-4 npaug ntawm lub phaj thickness. Nco ntsoov tias nws yuav tsum tau kwv yees li peb zaug lub zog siv rau cov qauv carbon steel.
Kub txoj kev: feem ntau yuav tsum tau zam saum toj no 560-580 degree, raws li nws muaj peev xwm hloov tus thawj tempering thiab degrade mechanical zog.
3. Kev xav tau ntawm vuam
Preheating: Tsim nyog rau cov phaj tuab kom txo cov cua txias thiab tiv thaiv hydrogen-induced txias cracking.
Thaum tshav kub kub input: yuav tsum nruj me ntsis tswj (feem ntau ntawm 1.25–1.58 kJ / mm). Kev siv hluav taws xob ntau dhau tuaj yeem tsim kom muaj "mos thaj tsam" hauv tshav kub -Tebchaws cuam tshuam (HAZ), txo qhov sib koom ua ke lub zog tensile.
Consumables: Tsawg-hydrogen electrodes thiab MIG vuam yog ntau; cov ntaub ntawv muab tub lim yuav tsum sib phim lossis qis me ntsis hauv lub zog dua li cov hlau hauv paus txhawm rau txo qhov kev pheej hmoo tawg.
Thov ib tus kws tshaj lij hais lus rau S690Q los ntawm GNEE Steel.
Hom hlau twg yog S690Q?
S690Q yog lub siab - lub zog quenched thiab tempered structural steel. Nws boasts zoo heev toughness, weldability, thiab lub zog, refined los ntawm kev tswj thermomechanical kev kho mob rau kev thov.
Dab tsi cov khoom tseem ceeb ua rau S690Q tshwj xeeb?
Nws cov khoom tseem ceeb suav nrog lub zog siab, ruaj khov qis -kub toughness, zoo ductility, thiab weldability. Cov no yog los ntawm kev kho cua sov kom haum, haum rau qhov hnyav hnyav thiab hnyav ib puag ncig.
S690Q's microstructure tsim li cas?
Nws ua tib zoo tswj quenching thiab tempering. Cov txheej txheem no ua kom zoo dua microstructure, txhim kho ob qho tib si lub zog thiab ductility kom ua tau raws li siab -kev ua tau zoo ntawm cov qauv.
Puas yog S690Q haum rau qis- siv kub?
Yog, nws tuav ruaj khov toughness txawm nyob rau hauv qis kub. Qhov no ua rau nws zoo tagnrho rau cov qauv uas ua rau muaj kev kub ntxhov lossis kev thauj khoom hnyav hauv qhov chaw txias yam tsis muaj kev poob haujlwm.
S690Q lub ntsiab daim ntawv thov cheeb tsam yog dab tsi?
Nws yog dav siv hauv cov tshuab hnyav, nqa cov cuab yeej, txuas hniav, thiab cov qauv sab nrauv. Nws ua tau zoo nyob rau hauv tej yaam num xav tau siab load-cov kabmob muaj peev xwm thiab hnyav optimization.
S690Q puas tuaj yeem txuas tau yooj yim?
Yog, nws muaj weldability zoo. Cov txheej txheem vuam kom zoo ua kom cov pob qij txha muaj zog yam tsis muaj kev cuam tshuam nws cov khoom siv kho tshuab, ua kom muaj txiaj ntsig zoo ntawm cov khoom loj.
Cov xwm txheej twg yog S690Q tiv taus?
Nws tiv taus hnyav static loads, dynamic rog, thiab siab heev. Nws lub zog siab thiab toughness ua rau nws txhim khu kev qha rau cov qauv hauv qab nruam lossis nrawm nrawm.
Puas yog S690Q siv nyob rau hauv cov qauv sab nrauv?
Yog, nws tsim nyog rau cov qauv sab nrauv. Nws tiv taus qhov hnyav marine ib puag ncig, suav nrog kev pheej hmoo corrosion thiab kub hloov pauv, thaum tswj kev ua haujlwm zoo.