A537 Chav Kawm 2 yog dab tsi?
ASTM A537 Qib 2yog cov cua sov-kho, carbon-manganese- silicon steel phaj, teev rau fusion-welded siab hlab ntsha thiab cov qauv zoo li tso tsheb hlau luam, muab cov txiaj ntsig siab dua thiab tensile lub zog dua Chav Kawm 1 vim quenching thiab tempering, ua rau nws tsim nyog rau kev thov hauv cov roj, roj, thiab tshuaj lom neeg kev lag luam ntawm qhov kub thiab txias. Nws muab zoo heev toughness thiab weldability (nrog rau cov txheej txheem tsim nyog) rau hnyav -lub luag hauj lwm kev pab cuam, nrog tsawg kawg nkaus yield zog ntawm 60 ksi (415 MPa) rau raug thicknesses.
Dimension Range
Nkaum / Qhia cov kab tshwj xeeb Kho kom raug
|
Thickness |
Dav |
Ntev |
|---|---|---|
|
0.375 - 2.00 |
96 - 120 |
240 - 588 |
Thickness:Nug rau thicknesses<0.375 in. and down to 0.197 in. and for thicknesses >2.00 mus rau 3.60.
Dav:Nug rau qhov dav<96 inches down to 60 inches and for widths >120 nti mus rau 131.9 nti.
Ntev:Nug rau qhov ntev<240 inches down to 73 inches.
Mechanical Properties
Kev ntsuas tensile yog ua nyob rau hauv txoj kev hloov pauv raws li ASTM A20 qhov yuav tsum tau ua. Mechanical zog yuav tsum tau tabulated hauv qab no:
Nkaum / Qhia cov kab tshwj xeeb Kho kom raug
|
Qib |
Yield zog |
Tensile zog |
Elongation hauv 2 " |
|---|---|---|---|
|
A537 Chav Kawm 2 |
60 |
80 - 100 |
22 |
Mechanical kuaj
Charpy V-Cov kev cai rau kev cuam tshuam Toughness yuav raug txiav txim raws li qhov yuav tsum tau ua ntxiv (S5). Qhov tsawg kawg nkaus Charpy V-qhov cuam tshuam rau lub zog muaj nuj nqis ntawm 30 ft-lbs [41 J] ntawm - 40℃F [-40 degree] nyob rau hauv cov qauv longitudinal yog ib qho kev cuam tshuam ntxiv rau qhov yuav tsum tau muaj zog. Thov nug rau daim ntawv thov uas yuav tsum tau hais txog qhov cuam tshuam tsawg kawg nkaus toughness.
Tshuaj muaj pes tsawg leeg
(Kev ntsuas kub, wt. %, qhov siab tshaj plaws tshwj tsis yog qhia)
Ua tau raws li cov cai ntawm ASTM A537 Class 2 / SA537 Class 2, raws li qhia hauv qab no. ASTM A20 txwv siv rau cov khoom tsis tau teev tseg.
Nkaum / Qhia cov kab tshwj xeeb Kho kom raug
|
C |
Mn 1) |
P 2) |
S 2) |
Si |
Cu |
Ni 1) |
Cr |
Mo |
|---|---|---|---|---|---|---|---|---|
|
0.24 |
1.60 |
0.020 |
0.010 |
0.50 |
0.35 |
0.25 |
0.25 |
0.080 |
1)Manganese tuaj yeem tshaj 1.35% ntawm kev ntsuas cua sov, mus txog qhov siab tshaj plaws ntawm 1.60%, thiab npib tsib xee tuaj yeem tshaj 0.25% ntawm kev ntsuas cua sov, txog li 0.50%, muab qhov ntsuas kub ntsuas carbon sib npaug (CEV) tsis tshaj 0.57%.
2)P thiab S muaj kev txwv ntau dua li A537 / SA537 cov cai. Txawm tias qis dua rau P thiab S muaj nyob rau ntawm kev nug.
Carbon sib npaug
Nkaum / Qhia cov kab tshwj xeeb Kho kom raug
|
Thickness (hauv) |
0.375 - 2.00 |
|---|---|
|
Yam CET (wt%) |
0.33 |
|
CEV (wt%) |
0.45 |
Muaj Chemistry: Carbon sib npaug (CEV) txwv rau weldability muaj raws li qhov yuav tsum tau ua ntxiv (S20). Thov nug txog kev txwv chemistry ntxiv.
Tolerances
Thickness, dav, thiab ntev kam rau ua rau A537 Chav Kawm 2 / SA537 Chav Kawm 2 yog raws li ASTM A20 cov cai. Kev ua siab ntev rau kev ua raws li - cov khoom siv yog ½ ASTM A20.
Kev Xa Khoom
ASTM A537 Chav Kawm 2 / SA537 Chav Kawm 2 yog nkag rau hauv qhov kub thiab txias.
Formability zog
A537 Chav Kawm 2 / SA537 Chav Kawm 2 nthuav tawm cov yam ntxwv txias txias zoo heev. Shear burrs thiab cua sov- cuam tshuam cov cheeb tsam ntawm thermal txiav npoo ntawm lossis ze ntawm qhov khoov axis nrog rau cov kaum ntse ntse ntawm cov npoo thiab ntawm cov roj txiav los yog xuas nrig ntaus qhov nyob ntawm lossis nyob ib sab ntawm qhov khoov axis yuav tsum raug tshem tawm los ntawm kev sib tsoo ua ntej txias txias. Cov nram qab no pom zoo yam tsawg kawg nkaus nyob rau hauv khoov vojvoog, R, thiab tuag dav qhib, W, raws li ib tug muaj nuj nqi ntawm khoov orientation yog muab:
Nkaum / Qhia cov kab tshwj xeeb Kho kom raug
|
Thickness (hauv. [mm]) |
Khoov Axis Perpendicular rau Rolling Direction Hauv Radius, R (min.) |
Khoov Axis Perpendicular rau Rolling Direction Die Width, W (min.) |
Khoov Axis Parallel rau Rolling Direction Hauv Radius, R (min.) |
Khoov Axis Parallel rau Rolling Direction Die Width, W (min.) |
|---|---|---|---|---|
|
0.375 – 1.00 [9.5 – 25.4] |
1.5t |
8t |
2.25t |
10t |
|
1.00 – 2.00 [25.4 – 50.1] |
2.0t |
8t |
3.0t |
10t |
Weldability
Vuam ntawm A537 Chav Kawm 2 / SA537 Chav Kawm 2 yuav tsum ua raws li txoj cai siv vuam siv. Nyob rau hauv tsis muaj ib tug tshwj xeeb welding code, cov nram qab no yam tsawg kawg nkaus preheat thiab interpass kub thiab vuam consumables yog muab. Cov khoom siv vuam tshwj xeeb thiab cov txheej txheem vuam yuav tsum tau ua kom tsis txhob muaj kev puas tsuaj rau cov khoom siv hluav taws xob ntawm lub hauv paus hlau. Tsawg hydrogen kev coj ua tau pom zoo.
Nkaum / Qhia cov kab tshwj xeeb Kho kom raug
|
Vuam txheej txheem |
Thickness (hauv. [mm]) |
Yam tsawg kawg nkaus Preheat thiab Interpass Kub (℃F [℃]) |
Cov khoom siv |
|---|---|---|---|
|
Shielded Hlau Arc (SMAW) |
Tsawg dua lossis sib npaug rau 3/4 [Less dua lossis sib npaug rau 19] |
50 [10] |
AWS E7015-X, E7016-X, E7018-X |
|
Shielded Hlau Arc (SMAW) |
>3/4 – 1.5 [19 – 38] |
50 [10] |
AWS E7015-X, E7016-X, E7018-X |
|
Shielded Hlau Arc (SMAW) |
>1.50 – 2.00 [>38 – 50] |
150 [65] |
AWS E7015-X, E7016-X, E7018-X |
|
Gas Metal Arc (GMAW) |
Tsawg dua lossis sib npaug rau 3/4 [Less dua lossis sib npaug rau 19] |
50 [10] |
AWS ER70S-X |
|
Gas Metal Arc (GMAW) |
>3/4 – 1.5 [19 – 38] |
50 [10] |
AWS ER70S-X |
|
Gas Metal Arc (GMAW) |
>1.50 – 2.00 [>38 – 50] |
150 [65] |
AWS ER70S-X |
|
Submerged Arc (SAW) |
Tsawg dua lossis sib npaug rau 3/4 [Less dua lossis sib npaug rau 19] |
50 [10] |
AWS F7XX-EXXX-XX |
|
Submerged Arc (SAW) |
>3/4 – 1.5 [19 – 38] |
50 [10] |
AWS F7XX-EXXX-XX |
|
Submerged Arc (SAW) |
>1.50 – 2.00 [>38 – 50] |
150 [65] |
AWS F7XX-EXXX-XX |
|
Flux Cored Arc (FCAW) |
Tsawg dua lossis sib npaug rau 3/4 [Less dua lossis sib npaug rau 19] |
50 [10] |
AWS E7XTX-X |
|
Flux Cored Arc (FCAW) |
>3/4 – 1.5 [19 – 38] |
50 [10] |
AWS E7XTX-X |
|
Flux Cored Arc (FCAW) |
>1.50 – 2.00 [>38 – 50] |
150 [65] |
AWS E7XTX-X |
1.Dab tsi yog A537 Class 2 steel?
A537 Chav Kawm 2 yog qhov siab - lub zog, cua sov- kho cov pa roj carbon -manganese- silicon steel phaj feem ntau yog siv rau welded siab hlab ntsha thiab kev siv cov txheej txheem uas yuav tsum tau ua kom zoo qis - kub toughness.
2.Dab tsi yog cov khoom siv tshuab ntawm A537 Chav Kawm 2?
Rau cov phaj siab txog 2.5 ntiv tes tuab, cov khoom muaj xws li lub zog tensile yam tsawg kawg nkaus ntawm 95-115 ksi (655-795 MPa) thiab qhov tsawg kawg nkaus lub zog ntawm 80 ksi (550 MPa), ua tiav los ntawm quenching thiab tempering.
3.Dab tsi yog cov tshuaj muaj pes tsawg leeg ntawm A537 Class 2?
Nws nta cov pa roj carbon -manganese- silicon muaj pes tsawg leeg, nrog qhov siab tshaj plaws nyob ib ncig ntawm 0.24% Carbon, 1.60% Manganese, thiab 0.15-0.50% Silicon, nrog rau kev tswj qib ntawm phosphorus thiab sulfur.
4.Dab tsi yog qhov txawv ntawm A537 Class 1 thiab Class 2?
Qhov sib txawv tseem ceeb yog kev kho cua sov thiab lub zog. Chav Kawm 2 yog quenched thiab tempered, muab lub zog ntau dua, thaum Chav Kawm 1 yog qhov qub lossis kev ntxhov siab-relived nrog qis zog qhov tseem ceeb.
5.Is A537 Class 2 yog carbon steel lossis hlau alloy?
Nws raug cais raws li qib siab -lub zog carbon steel (tshwj xeeb yog carbon-manganese-silicon steel), nrog rau nws cov khoom txhim kho tau los ntawm kev kho cua sov ntau dua li cov ntsiab lus siab alloy.
6.Dab tsi yog Charpy cuam tshuam yuav tsum tau rau A537 Chav Kawm 2?
Nws feem ntau yuav tsum tau Charpy V-Kev ntsuas qhov cuam tshuam ntawm -50℃F (-46 degree) nrog qhov tsawg kawg nkaus qhov nruab nrab lub zog nqus feem ntau teev raws li 40 ft-lbs (54 J) rau cov phaj tshaj cov thicknesses.
7.A537 Chav Kawm 2 puas tuaj yeem welded?
Yog, tab sis nws yuav tsum tau ceev faj cov txheej txheem vuam vim nws quenched thiab tempered microstructure. Kev siv qis- hydrogen electrodes, preheat kom raug, thiab kev tswj cov cua sov yog qhov tseem ceeb los tswj cov khoom.
8.Dab tsi yog cov ntawv thov rau A537 Class 2 steel?
Nws yog dav siv nyob rau hauv cov hlab ntsha siab, cov tso tsheb hlau luam, cov khoom siv sab nrauv, cov khoom siv mining, thiab lwm yam kev siv uas muaj lub zog siab thiab zoo qis - qhov kub thiab txias yuav tsum tau ua.
9.Dab tsi yog kev kho cua sov rau A537 Class 2 daim hlau?
A537 Chav Kawm 2 daim hlau tau muab rau hauv qhov quenched (ceev txias) thiab tempered (reheated) mob, uas muab lawv lub zog siab thiab toughness ua ke.
10. Puas yog A537 Chav Kawm 2 haum rau qis- kev pabcuam kub?
Yog lawm, vim nws cov quenched thiab tempered microstructure, A537 Chav Kawm 2 muaj qhov zoo tshaj plaws torque toughness thiab feem ntau tau teev tseg rau cov kev pabcuam kub mus rau -50℃F (-46 degree) thiab hauv qab no.
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.
