ASTM A517 Qib B, A517 gr . b, A517GRB Hlau Phaj
| A517 qib bchemical muaj pes tsawg | |||||
| Teem nqi | Lub caij max (%) | ||||
| C | Si | Mn | P | S | |
| A517 Qib B | 0.13-0.23 | 0.13-0.37 | 0.64-1.10 | 0.035 | 0.035 |
| Cr | Mo | B | Ti | V | |
| 0.36-0.69 | 0.12-0.28 | 0.0005-0.005 | 0.01-0.05 | 0.02-0.09 | |
Carbon sib npaug: CeQ=【C + MNE C + V) / {} (NI + CU) / 15】%
| Teem nqi | A517 qib B Txhua Yam Khoom Cov Khoom | |||
| Qhov tuab | Pub | Lub tensile | Elongation | |
| A517 Qib B | lub hli | Min MPa | MPa | Min% |
| 6-65 | 690 | 795-930 | 16% | |
| 65-150 | 620 | 725-930 | 14% | |
Q1:Tus thawj coj tshwj xeeb thiab cov yam ntxwv tseem ceeb ntawm A517 qib B?
Txheem:ASTM A517
Qeb Kev Kawm:Qib B
Cov Nta Tseem Ceeb:
Lub zog tensile:** ntau dua los yog sib npaug760 MPa (110 KSI)
Paib lub zog:** ntau dua los yog sib npaug690 MPa (100 ksi)
Thickness ntau:Feem ntau6-150 HLI 6(thicker ntu yuav tsum tau tswj nruj me ntsis)
Kev Kho Cua Sov: Quenched & tempered (q & t)Rau kev ua lub zog zoo-kev sib npaug sib npaug
Q2:Cov tshuaj lom neeg muaj pes tsawg leeg ntawm qib B txawv ntawm qib A?
Alloy hloov kho rau lub zog siab dua:
Cov pa roj carbon (c):0.12-0.21% (tswj hwm rau Weldability)
Manganese (MN): 0.70–1.00%
Chromium (CR): 0.40–0.65% (↑淬透性)
Molybdenum (MO):0 {. 20-0.30% (↑ Temiming Refillations vs. Qeb A)
Boron (b):0.001-0.003% (tseem ceeb rau cov tawv tawv)
Qhov tseem ceeb sib txawv vs . qib ib:
Siab duaMo cov ntsiab lustxhim kho lub zog ntawm kev nce kub .
Q3:Dab tsi vuam cov txheej txheem tseem ceeb heev rau A517 qib B?
Preheating: 175-230 degree(thickness-nyob, rau AWS D1.1)
Sib txha kub: Tsawg dua los yog sib npaug nrog 250 degree(los pab tiv thaiv kev ua kom tawg)
Cov tub lim hlau: AWS E 12018- g(txuam {110- ksi tensile lub zog)
Pwhal: Tseem ceeb(595-650℃rau 1-2 teev, raws li cov tuab)
NDT yuav tsum muaj:
100% UT / RTRau qhov tseem ceeb
Kev Kuaj Hardness:Tsawg dua los yog sib npaug325 HVHauv phoo kom tsis txhob muaj hydrogen cracking
Q4:Lub Charpy Feem Kev Yuav Tsum Tau Ua Dab Tsi Kev Txwv Qhov Kub Kub?
Cov Qauv Xav Tau:** ntau dua los yog sib npaug34 j ntawm -40 degree(rau thickness tsawg dua los yog sib npaug rau 50 hli)
Kev Tshuaj Ntsuam Ntxiv:
Kev ntsuas qhov hnyav (DWT)tej zaum yuav tsum muaj cov kab tuab
CTOOD Kev Tshuaj Ntsuamrau kev siv cov ntaub ntawv tseem ceeb-(e . g ., sab nrauv)
Nco tseg: Toughness decreases with thickness; extra alloy refinement is needed for >100 hli daim hlau .
Q5:Qib qeb B feem ntau teev, thiab lwm yam kev xaiv yog dab tsi?
Thawj cov ntawv thov:
Tsuas:High-hnav cov thoob duav thiab cov crushers
Defense:Ballistic Armor daim hlau
Zog:Siab Hlab Rau Cov Khoom Siv Roj Nroj Tsuag
Ntughore:Tension ceg tawv
Hloov chaw:
A517 Qib F:Muaj zog dua ntawm lub zog zoo sib xws
Hy -130:Naval steel nrog zoo corrosion tsis kam
ASTM A543:Rau cov ntawv thov nuclear nrog kev ua kom nruj
Cim npe nrov: A517 Qib B rau cov hlab ntsha siab rau lub siab siab Phaj, Tuam Tshoj A517 qib B rau lub siab ntsha siab phaj tsim, cov chaw muag khoom, Hoobkas
