Dab tsi yog qhov cuam tshuam nyuaj ntawm A588 ntawm ntau qhov kub? -} kev paub

1. Tom qab no: A588 Qib Qib Sib Txawv

ASTM A588 piav txog ob qib thawj coj cov txheej txheem kev tsim kho, txhua tus nrog cov kev cuam tshuam sib txawv ua ntej ntsuas kub- kev ua tau zoo:

A588 Qib A: Optimized rau cov huab cua muaj huab cua; tsom rau kev tawv ntawm -20 degree.

A588 qib b: Tsim los rau cov cheeb tsam txias; Hloov qhov ntsuas kub rau -40℃(tab sis nrog qis zog yuav tsum tau).

Ob qho tag nrho siv covCharpy v - untch (cvn)Txoj kev xeem, thiab cov txiaj ntsig tau hnyav los ntawm phaj tuab (thicker daim hlau feem ntau muaj me ntsis qis dua txias thaum muaj ntau lawm thaum lub sijhawm tsim khoom).

2. Cov kev cuam tshuam tawv ntawm cov kub kub

2.1 tsawg kub (-40℃rau -20 degree): tseem ceeb rau huab cua txias

Tsawg kub yog qhov xav tau tshaj plaws rau kev nruj, thiab A588 qib kev sib cais yog feem ntau tshwm sim ntawm no:

Teem nqi	Qho so	ASTM yuav tsum muaj qhov tsawg kawg cvn zog	Kev lag luam kev lag luam zoo (tuab tsawg dua lossis sib npaug nrog 50 hli)	Cov ntawv tseem ceeb
A588 qib b	-40 Qib	Ntau dua los yog sib luag rau 18 j (13 ft - lb)	25–40 J	Tsuas yog qib phiaj -40 degree; Yam tsawg kawg nkaus lub zog nyob deb dua s355k2w kev xaiv tau 30 j at -40 degree.
A588 Qib A	-20 degree	Ntau dua los yog sib luag rau 27 j (20 ft - lb)	35–50 J	Qib Qib rau Nruab Nrab Txias; Cov txuj ci zoo tshaj qhov tsawg kawg nkaus tab sis tseem lags s355k2W's 60-90 J ntawm -20 degree.
A588 qib b	-20 degree	Tsis tau hais meej meej	40–55 J	Siab dua qib kawm ib ntawm -20 degree, tab sis tseem hauv qab s355k2w lub hauv paus.

Kev Txwv Tseem Ceeb: Rau qib a, kub hauv qab no {}}}}} 20℃(piv txwv li kev poob qis hauv lub zog-lub zog yuav plummet rau<20 J, pushing the steel into the brittle region. Grade B avoids this at -40°C but only with minimal energy, making it unsuitable for high-stress applications (e.g., seismic zones) in extreme cold.

2.2 Kev Kub (0 Qib Rau 20 degree): Kev nruj me ntsis txhim kho nrog cov cua sov

Ntawm cov tshuab hluav taws xob kub, A588's nruj zuj zus nce raws li kev ua tau zoo rov qab, tab sis kev ua tau zoo tseem nyob hauv feem ntau:

Ntawm 0 degree:

Qeb A: Raug CVN zog=50}}}} - 70 tus℃tsawg kawg, tab sis ~ 30% qis dua s355k j).

Qib B: Raug Cvn Zog=60}}}}}}- sov optimization, tab sis tseem hauv qab s355k2w).

Qhov no ntau yog txaus rau feem ntau me {{0 eg, peb cov chaw nyab xeeb me me rau kev siv hluav taws xob (piv txwv li, cua gusts) piv rau S355K2W.

Ntawm 20℃(chav sov):

Ob Qib Zej Mus Txog Peak Toughness: Qib A=70}} - 90 j; Qib B=80} - 100 Y.

Ntawm qhov kub thiab txias rau cov roj carbon Txawm li cas los xij, S35555K2W tseem Outperforms (100-150 J), muab ntau resilience tawm tsam kev cuam tshuam kev txom nyem (piv txwv li, kev siv tsheb sib tsoo).

2.3 Thickness cuam tshuam: Tawv poob qis hauv cov paib tuab

Rau cov phiaj thicker dua 50 hli (ib txwm muaj cov qauv hnyav zoo li Choj Gesss lossis cov nkoj siab txo qis dua li S355K2W's:

A588 Qib A (100mm tuab): Nyob rau ntawm -20 degree, lub zog loj zuj zus mus rau 22-25 J (hauv qab 27 nws yam tsawg kawg rau cov phiaj thinner). Qhov no yog vim coarser grain qauv los ntawm qeeb qeeb, uas tsis muaj zog tiv thaiv kom tawg.

A588 Qib B (100mm tuab): Ntawm -40 degree, lub zog poob mus rau 15-18 J (NW nyuam qhuav ntsib 18 tus J (tsis muaj kev nyab xeeb).

Hauv kev sib piv, S355K2W's 100mm - cov hlau tuab tseem tswj tau 45-55}

3. TSEEM CEEB TE RAU DAIM NTAWV THOV

Xaiv Qib A rau Cov Sawv Cev Muaj Qib(Qhov chaw kub tsis tshua muaj qis dua-20 degree): Nws ntsib cov kev xav tau yooj yim ntawm tus nqi qis tab sis zam kev siv nyob rau hauv huab cua txias.

Xaiv qib B rau cov cheeb tsam txias(To Sim rau - 40 kawg {}}}} kev siv ntxhov siab (piv txwv li cov kabmob sib tw).

Qhov teeb meem tuab: For plates >50 hli, kuaj xyuas cov ntawv ceeb toom rau A588 {{{}}} Ntau yam tsis muaj peev xwm ua tiav lossis hloov mus rau S355K2W.

info-427-365 info-210-208

Dab tsi yog qhov cuam tshuam nyuaj ntawm A588 ntawm ntau qhov kub?